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<span class="siteSubtitle">Run on Tue May 4 15:25:55 2010<br />Reported on Tue May 4 15:26:06 2010</span>
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<table>
<tr>
<td class="h" align="right">File</td>
<td align="left">/usr/local/lib/perl5/5.10.1/darwin-2level/DynaLoader.pm</td>
</tr>
<tr>
<td class="h" align="right">Statements Executed</td>
<td align="left">343</td>
</tr>
<tr>
<td class="h" align="right">Statement Execution Time</td>
<td align="left">23.9ms</td>
</tr>
</table>
<table id="subs_table" border="1" cellpadding="0" class="tablesorter">
<caption>Subroutines — ordered by exclusive time</caption>
<thead>
<tr>
<th>Calls</th>
<th><span title="Number of Places sub is called from">P</span></th>
<th><span title="Number of Files sub is called from">F</span></th>
<th>Exclusive<br />Time</th>
<th>Inclusive<br />Time</th>
<th>Subroutine</th>
</tr>
</thead>
<tbody>
<tr><td class="c3">8</td><td class="c3">1</td><td class="c3">2</td><td class="c0"><span title="1.9%">20.3ms</span></td><td class="c0"><span title="1.9%">20.3ms</span></td><td class="sub_name"><span style="display: none;">DynaLoader::::dl_load_file</span>DynaLoader::<a href="DynaLoader-pm-sub.html#DynaLoader__dl_load_file">dl_load_file</a> (xsub)</span></td></tr>
<tr><td class="c3">8</td><td class="c0">8</td><td class="c0">8</td><td class="c0"><span title="0.1%">817µs</span></td><td class="c0"><span title="2.1%">22.8ms</span></td><td class="sub_name"><span style="display: none;">DynaLoader::::bootstrap</span>DynaLoader::<a href="DynaLoader-pm-sub.html#116">bootstrap</a></span></td></tr>
<tr><td class="c0">16</td><td class="c1">2</td><td class="c3">2</td><td class="c0"><span title="0.0%">309µs</span></td><td class="c0"><span title="0.0%">309µs</span></td><td class="sub_name"><span style="display: none;">DynaLoader::::CORE:subst</span>DynaLoader::<a href="DynaLoader-pm-sub.html#DynaLoader__CORE_subst">CORE:subst</a> (opcode)</span></td></tr>
<tr><td class="c0">26</td><td class="c3">1</td><td class="c3">2</td><td class="c2"><span title="0.0%">139µs</span></td><td class="c2"><span title="0.0%">139µs</span></td><td class="sub_name"><span style="display: none;">DynaLoader::::CORE:ftdir</span>DynaLoader::<a href="DynaLoader-pm-sub.html#DynaLoader__CORE_ftdir">CORE:ftdir</a> (opcode)</span></td></tr>
<tr><td class="c3">8</td><td class="c3">1</td><td class="c3">2</td><td class="c3"><span title="0.0%">90µs</span></td><td class="c3"><span title="0.0%">90µs</span></td><td class="sub_name"><span style="display: none;">DynaLoader::::CORE:ftfile</span>DynaLoader::<a href="DynaLoader-pm-sub.html#DynaLoader__CORE_ftfile">CORE:ftfile</a> (opcode)</span></td></tr>
<tr><td class="c0">16</td><td class="c1">2</td><td class="c3">2</td><td class="c3"><span title="0.0%">83µs</span></td><td class="c3"><span title="0.0%">83µs</span></td><td class="sub_name"><span style="display: none;">DynaLoader::::dl_find_symbol</span>DynaLoader::<a href="DynaLoader-pm-sub.html#DynaLoader__dl_find_symbol">dl_find_symbol</a> (xsub)</span></td></tr>
<tr><td class="c3">8</td><td class="c3">1</td><td class="c3">2</td><td class="c3"><span title="0.0%">56µs</span></td><td class="c3"><span title="0.0%">56µs</span></td><td class="sub_name"><span style="display: none;">DynaLoader::::dl_install_xsub</span>DynaLoader::<a href="DynaLoader-pm-sub.html#DynaLoader__dl_install_xsub">dl_install_xsub</a> (xsub)</span></td></tr>
<tr><td class="c3">8</td><td class="c3">1</td><td class="c3">2</td><td class="c3"><span title="0.0%">54µs</span></td><td class="c3"><span title="0.0%">54µs</span></td><td class="sub_name"><span style="display: none;">DynaLoader::::CORE:ftsize</span>DynaLoader::<a href="DynaLoader-pm-sub.html#DynaLoader__CORE_ftsize">CORE:ftsize</a> (opcode)</span></td></tr>
<tr><td class="c3">8</td><td class="c3">1</td><td class="c3">2</td><td class="c3"><span title="0.0%">17µs</span></td><td class="c3"><span title="0.0%">17µs</span></td><td class="sub_name"><span style="display: none;">DynaLoader::::dl_undef_symbols</span>DynaLoader::<a href="DynaLoader-pm-sub.html#DynaLoader__dl_undef_symbols">dl_undef_symbols</a> (xsub)</span></td></tr>
<tr><td class="c3">8</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">15µs</span></td><td class="c3"><span title="0.0%">15µs</span></td><td class="sub_name"><span style="display: none;">DynaLoader::::dl_load_flags</span>DynaLoader::<a href="DynaLoader-pm-sub.html#41">dl_load_flags</a></span></td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">12µs</span></td><td class="c3"><span title="0.0%">28µs</span></td><td class="sub_name"><span style="display: none;">DynaLoader::::BEGIN@25</span>DynaLoader::<a href="DynaLoader-pm-sub.html#25">BEGIN@25</a></span></td></tr>
<tr><td class="c3">1</td><td class="c3">1</td><td class="c3">1</td><td class="c3"><span title="0.0%">9µs</span></td><td class="c3"><span title="0.0%">9µs</span></td><td class="sub_name"><span style="display: none;">DynaLoader::::BEGIN@18</span>DynaLoader::<a href="DynaLoader-pm-sub.html#18">BEGIN@18</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">DynaLoader::::bootstrap_inherit</span>DynaLoader::<a href="DynaLoader-pm-sub.html#105">bootstrap_inherit</a></span></td></tr>
<tr><td class="c3">0</td><td class="c3">0</td><td class="c3">0</td><td class="c3"><span title="0.0%">0s</span></td><td class="c3"><span title="0.0%">0s</span></td><td class="sub_name"><span style="display: none;">DynaLoader::::croak</span>DynaLoader::<a href="DynaLoader-pm-sub.html#103">croak</a></span></td></tr>
</tbody>
</table>
Call graph for these subroutines as a <a href="http://en.wikipedia.org/wiki/Graphviz">Graphviz</a> <a href="usr-local-lib-perl5-5-10-1-darwin-2level-DynaLoader-pm.dot">dot language file</a>.
<table border="1" cellpadding="0">
<thead>
<tr><th>Line</th>
<th><span title="Number of statements executed">State<br />ments</span></th>
<th><span title="Time spend executing statements on the line,
excluding time spent executing statements in any called subroutines">Time<br />on line</span></th>
<th><span title="Number of subroutines calls">Calls</span></th>
<th><span title="Time spent in subroutines called">Time<br />in subs</span></th>
<th class="left_indent_header">Code</th>
</tr>
</thead>
<tbody>
<tr><td class="h"><a name="1"></a>1</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="2"></a>2</td><td></td><td></td><td></td><td></td><td class="s"># Generated from DynaLoader_pm.PL</td></tr>
<tr><td class="h"><a name="3"></a>3</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="4"></a>4</td><td></td><td></td><td></td><td></td><td class="s">package DynaLoader;</td></tr>
<tr><td class="h"><a name="5"></a>5</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="6"></a>6</td><td></td><td></td><td></td><td></td><td class="s"># And Gandalf said: 'Many folk like to know beforehand what is to</td></tr>
<tr><td class="h"><a name="7"></a>7</td><td></td><td></td><td></td><td></td><td class="s"># be set on the table; but those who have laboured to prepare the</td></tr>
<tr><td class="h"><a name="8"></a>8</td><td></td><td></td><td></td><td></td><td class="s"># feast like to keep their secret; for wonder makes the words of</td></tr>
<tr><td class="h"><a name="9"></a>9</td><td></td><td></td><td></td><td></td><td class="s"># praise louder.'</td></tr>
<tr><td class="h"><a name="10"></a>10</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="11"></a>11</td><td></td><td></td><td></td><td></td><td class="s"># (Quote from Tolkien suggested by Anno Siegel.)</td></tr>
<tr><td class="h"><a name="12"></a>12</td><td></td><td></td><td></td><td></td><td class="s">#</td></tr>
<tr><td class="h"><a name="13"></a>13</td><td></td><td></td><td></td><td></td><td class="s"># See pod text at end of file for documentation.</td></tr>
<tr><td class="h"><a name="14"></a>14</td><td></td><td></td><td></td><td></td><td class="s"># See also ext/DynaLoader/README in source tree for other information.</td></tr>
<tr><td class="h"><a name="15"></a>15</td><td></td><td></td><td></td><td></td><td class="s">#</td></tr>
<tr><td class="h"><a name="16"></a>16</td><td></td><td></td><td></td><td></td><td class="s"># Tim.Bunce@ig.co.uk, August 1994</td></tr>
<tr><td class="h"><a name="17"></a>17</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="18"></a>18</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 9µs within DynaLoader::BEGIN@18 which was called
# once (9µs+0s) by base::import at <a href="DynaLoader-pm-sub.html#20">line 20</a></div></div>BEGIN {</td></tr>
<tr><td class="h"><a name="19"></a>19</td><td class="c3">1</td><td class="c2"><span title="Avg 5µs">5µs</span></td><td></td><td></td><td class="s"> $VERSION = '1.10';</td></tr>
<tr><td class="h"><a name="20"></a>20</td><td class="c3">1</td><td class="c0"><span title="Avg 44µs">44µs</span></td><td class="c3">1</td><td class="c0">9µs</td><td class="s">}<div class="calls"><div class="calls_out"># spent 9µs making 1 call to <a href="DynaLoader-pm-sub.html#18">DynaLoader::BEGIN@18</a></div></div></td></tr>
<tr><td class="h"><a name="21"></a>21</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="22"></a>22</td><td class="c3">1</td><td class="c0"><span title="Avg 75µs">75µs</span></td><td></td><td></td><td class="s">require AutoLoader;</td></tr>
<tr><td class="h"><a name="23"></a>23</td><td class="c3">1</td><td class="c3"><span title="Avg 2µs">2µs</span></td><td></td><td></td><td class="s">*AUTOLOAD = \&AutoLoader::AUTOLOAD;</td></tr>
<tr><td class="h"><a name="24"></a>24</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="25"></a>25</td><td class="c0">3</td><td class="c0"><span title="Avg 285µs">854µs</span></td><td class="c1">2</td><td class="c0">44µs</td><td class="s"><div class="calls"><div class="calls_in"># spent 28µs (12+16) within DynaLoader::BEGIN@25 which was called
# once (12µs+16µs) by base::import at <a href="DynaLoader-pm-sub.html#25">line 25</a></div></div>use Config;<div class="calls"><div class="calls_out"># spent 28µs making 1 call to <a href="DynaLoader-pm-sub.html#25">DynaLoader::BEGIN@25</a>
# spent 16µs making 1 call to <a href="Config-pm-sub.html#28">Config::import</a></div></div></td></tr>
<tr><td class="h"><a name="26"></a>26</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="27"></a>27</td><td></td><td></td><td></td><td></td><td class="s"># enable debug/trace messages from DynaLoader perl code</td></tr>
<tr><td class="h"><a name="28"></a>28</td><td class="c3">1</td><td class="c3"><span title="Avg 1µs">1µs</span></td><td></td><td></td><td class="s">$dl_debug = $ENV{PERL_DL_DEBUG} || 0 unless defined $dl_debug;</td></tr>
<tr><td class="h"><a name="29"></a>29</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="30"></a>30</td><td></td><td></td><td></td><td></td><td class="s">#</td></tr>
<tr><td class="h"><a name="31"></a>31</td><td></td><td></td><td></td><td></td><td class="s"># Flags to alter dl_load_file behaviour. Assigned bits:</td></tr>
<tr><td class="h"><a name="32"></a>32</td><td></td><td></td><td></td><td></td><td class="s"># 0x01 make symbols available for linking later dl_load_file's.</td></tr>
<tr><td class="h"><a name="33"></a>33</td><td></td><td></td><td></td><td></td><td class="s"># (only known to work on Solaris 2 using dlopen(RTLD_GLOBAL))</td></tr>
<tr><td class="h"><a name="34"></a>34</td><td></td><td></td><td></td><td></td><td class="s"># (ignored under VMS; effect is built-in to image linking)</td></tr>
<tr><td class="h"><a name="35"></a>35</td><td></td><td></td><td></td><td></td><td class="s">#</td></tr>
<tr><td class="h"><a name="36"></a>36</td><td></td><td></td><td></td><td></td><td class="s"># This is called as a class method $module->dl_load_flags. The</td></tr>
<tr><td class="h"><a name="37"></a>37</td><td></td><td></td><td></td><td></td><td class="s"># definition here will be inherited and result on "default" loading</td></tr>
<tr><td class="h"><a name="38"></a>38</td><td></td><td></td><td></td><td></td><td class="s"># behaviour unless a sub-class of DynaLoader defines its own version.</td></tr>
<tr><td class="h"><a name="39"></a>39</td><td></td><td></td><td></td><td></td><td class="s">#</td></tr>
<tr><td class="h"><a name="40"></a>40</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="41"></a>41</td><td class="c0">8</td><td class="c0"><span title="Avg 3µs">24µs</span></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 15µs within DynaLoader::dl_load_flags which was called 8 times, avg 2µs/call:
# 8 times (15µs+0s) by DynaLoader::bootstrap at <a href="DynaLoader-pm-sub.html#204">line 204</a>, avg 2µs/call</div></div>sub dl_load_flags { 0x00 }</td></tr>
<tr><td class="h"><a name="42"></a>42</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="43"></a>43</td><td class="c3">1</td><td class="c0"><span title="Avg 16µs">16µs</span></td><td class="c0">3</td><td class="c0">1.34ms</td><td class="s">($dl_dlext, $dl_so, $dlsrc) = @Config::Config{qw(dlext so dlsrc)};<div class="calls"><div class="calls_out"># spent 1.34ms making 3 calls to <a href="Config-pm-sub.html#55">Config::FETCH</a>, avg 448µs/call</div></div></td></tr>
<tr><td class="h"><a name="44"></a>44</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="45"></a>45</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="46"></a>46</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s">$do_expand = 0;</td></tr>
<tr><td class="h"><a name="47"></a>47</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="48"></a>48</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="49"></a>49</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="50"></a>50</td><td class="c3">1</td><td class="c3"><span title="Avg 1µs">1µs</span></td><td></td><td></td><td class="s">@dl_require_symbols = (); # names of symbols we need</td></tr>
<tr><td class="h"><a name="51"></a>51</td><td class="c3">1</td><td class="c3"><span title="Avg 200ns">200ns</span></td><td></td><td></td><td class="s">@dl_resolve_using = (); # names of files to link with</td></tr>
<tr><td class="h"><a name="52"></a>52</td><td class="c3">1</td><td class="c3"><span title="Avg 100ns">100ns</span></td><td></td><td></td><td class="s">@dl_library_path = (); # path to look for files</td></tr>
<tr><td class="h"><a name="53"></a>53</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="54"></a>54</td><td></td><td></td><td></td><td></td><td class="s">#XSLoader.pm may have added elements before we were required</td></tr>
<tr><td class="h"><a name="55"></a>55</td><td></td><td></td><td></td><td></td><td class="s">#@dl_shared_objects = (); # shared objects for symbols we have </td></tr>
<tr><td class="h"><a name="56"></a>56</td><td></td><td></td><td></td><td></td><td class="s">#@dl_librefs = (); # things we have loaded</td></tr>
<tr><td class="h"><a name="57"></a>57</td><td></td><td></td><td></td><td></td><td class="s">#@dl_modules = (); # Modules we have loaded</td></tr>
<tr><td class="h"><a name="58"></a>58</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="59"></a>59</td><td></td><td></td><td></td><td></td><td class="s"># This is a fix to support DLD's unfortunate desire to relink -lc</td></tr>
<tr><td class="h"><a name="60"></a>60</td><td class="c3">1</td><td class="c3"><span title="Avg 100ns">100ns</span></td><td></td><td></td><td class="s">@dl_resolve_using = dl_findfile('-lc') if $dlsrc eq "dl_dld.xs";</td></tr>
<tr><td class="h"><a name="61"></a>61</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="62"></a>62</td><td></td><td></td><td></td><td></td><td class="s"># Initialise @dl_library_path with the 'standard' library path</td></tr>
<tr><td class="h"><a name="63"></a>63</td><td></td><td></td><td></td><td></td><td class="s"># for this platform as determined by Configure.</td></tr>
<tr><td class="h"><a name="64"></a>64</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="65"></a>65</td><td class="c3">1</td><td class="c1"><span title="Avg 6µs">6µs</span></td><td class="c3">1</td><td class="c3">2µs</td><td class="s">push(@dl_library_path, split(' ', $Config::Config{libpth}));<div class="calls"><div class="calls_out"># spent 2µs making 1 call to <a href="Config-pm-sub.html#55">Config::FETCH</a></div></div></td></tr>
<tr><td class="h"><a name="66"></a>66</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="67"></a>67</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="68"></a>68</td><td class="c3">1</td><td class="c3"><span title="Avg 3µs">3µs</span></td><td class="c3">1</td><td class="c3">2µs</td><td class="s">my $ldlibpthname = $Config::Config{ldlibpthname};<div class="calls"><div class="calls_out"># spent 2µs making 1 call to <a href="Config-pm-sub.html#55">Config::FETCH</a></div></div></td></tr>
<tr><td class="h"><a name="69"></a>69</td><td class="c3">1</td><td class="c3"><span title="Avg 3µs">3µs</span></td><td class="c3">1</td><td class="c3">1µs</td><td class="s">my $ldlibpthname_defined = defined $Config::Config{ldlibpthname};<div class="calls"><div class="calls_out"># spent 1µs making 1 call to <a href="Config-pm-sub.html#55">Config::FETCH</a></div></div></td></tr>
<tr><td class="h"><a name="70"></a>70</td><td class="c3">1</td><td class="c3"><span title="Avg 3µs">3µs</span></td><td class="c3">1</td><td class="c3">2µs</td><td class="s">my $pthsep = $Config::Config{path_sep};<div class="calls"><div class="calls_out"># spent 2µs making 1 call to <a href="Config-pm-sub.html#55">Config::FETCH</a></div></div></td></tr>
<tr><td class="h"><a name="71"></a>71</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="72"></a>72</td><td></td><td></td><td></td><td></td><td class="s"># Add to @dl_library_path any extra directories we can gather from environment</td></tr>
<tr><td class="h"><a name="73"></a>73</td><td></td><td></td><td></td><td></td><td class="s"># during runtime.</td></tr>
<tr><td class="h"><a name="74"></a>74</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="75"></a>75</td><td class="c3">1</td><td class="c3"><span title="Avg 1µs">1µs</span></td><td></td><td></td><td class="s">if ($ldlibpthname_defined &&</td></tr>
<tr><td class="h"><a name="76"></a>76</td><td></td><td></td><td></td><td></td><td class="s"> exists $ENV{$ldlibpthname}) {</td></tr>
<tr><td class="h"><a name="77"></a>77</td><td></td><td></td><td></td><td></td><td class="s"> push(@dl_library_path, split(/$pthsep/, $ENV{$ldlibpthname}));</td></tr>
<tr><td class="h"><a name="78"></a>78</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="79"></a>79</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="80"></a>80</td><td></td><td></td><td></td><td></td><td class="s"># E.g. HP-UX supports both its native SHLIB_PATH *and* LD_LIBRARY_PATH.</td></tr>
<tr><td class="h"><a name="81"></a>81</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="82"></a>82</td><td class="c3">1</td><td class="c3"><span title="Avg 600ns">600ns</span></td><td></td><td></td><td class="s">if ($ldlibpthname_defined &&</td></tr>
<tr><td class="h"><a name="83"></a>83</td><td></td><td></td><td></td><td></td><td class="s"> $ldlibpthname ne 'LD_LIBRARY_PATH' &&</td></tr>
<tr><td class="h"><a name="84"></a>84</td><td></td><td></td><td></td><td></td><td class="s"> exists $ENV{LD_LIBRARY_PATH}) {</td></tr>
<tr><td class="h"><a name="85"></a>85</td><td></td><td></td><td></td><td></td><td class="s"> push(@dl_library_path, split(/$pthsep/, $ENV{LD_LIBRARY_PATH}));</td></tr>
<tr><td class="h"><a name="86"></a>86</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="87"></a>87</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="88"></a>88</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="89"></a>89</td><td></td><td></td><td></td><td></td><td class="s"># No prizes for guessing why we don't say 'bootstrap DynaLoader;' here.</td></tr>
<tr><td class="h"><a name="90"></a>90</td><td></td><td></td><td></td><td></td><td class="s"># NOTE: All dl_*.xs (including dl_none.xs) define a dl_error() XSUB</td></tr>
<tr><td class="h"><a name="91"></a>91</td><td class="c3">1</td><td class="c3"><span title="Avg 700ns">700ns</span></td><td></td><td></td><td class="s">boot_DynaLoader('DynaLoader') if defined(&boot_DynaLoader) &&</td></tr>
<tr><td class="h"><a name="92"></a>92</td><td></td><td></td><td></td><td></td><td class="s"> !defined(&dl_error);</td></tr>
<tr><td class="h"><a name="93"></a>93</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="94"></a>94</td><td class="c3">1</td><td class="c3"><span title="Avg 100ns">100ns</span></td><td></td><td></td><td class="s">if ($dl_debug) {</td></tr>
<tr><td class="h"><a name="95"></a>95</td><td></td><td></td><td></td><td></td><td class="s"> print STDERR "DynaLoader.pm loaded (@INC, @dl_library_path)\n";</td></tr>
<tr><td class="h"><a name="96"></a>96</td><td></td><td></td><td></td><td></td><td class="s"> print STDERR "DynaLoader not linked into this perl\n"</td></tr>
<tr><td class="h"><a name="97"></a>97</td><td></td><td></td><td></td><td></td><td class="s"> unless defined(&boot_DynaLoader);</td></tr>
<tr><td class="h"><a name="98"></a>98</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="99"></a>99</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="100"></a>100</td><td class="c3">1</td><td class="c0"><span title="Avg 37µs">37µs</span></td><td></td><td></td><td class="s">1; # End of main code</td></tr>
<tr><td class="h"><a name="101"></a>101</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="102"></a>102</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="103"></a>103</td><td></td><td></td><td></td><td></td><td class="s">sub croak { require Carp; Carp::croak(@_) }</td></tr>
<tr><td class="h"><a name="104"></a>104</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="105"></a>105</td><td></td><td></td><td></td><td></td><td class="s">sub bootstrap_inherit {</td></tr>
<tr><td class="h"><a name="106"></a>106</td><td class="c0">4</td><td class="c0"><span title="Avg 5µs">20µs</span></td><td></td><td></td><td class="s"> my $module = $_[0];</td></tr>
<tr><td class="h"><a name="107"></a>107</td><td></td><td></td><td></td><td></td><td class="s"> local *isa = *{"$module\::ISA"};</td></tr>
<tr><td class="h"><a name="108"></a>108</td><td></td><td></td><td></td><td></td><td class="s"> local @isa = (@isa, 'DynaLoader');</td></tr>
<tr><td class="h"><a name="109"></a>109</td><td></td><td></td><td></td><td></td><td class="s"> # Cannot goto due to delocalization. Will report errors on a wrong line?</td></tr>
<tr><td class="h"><a name="110"></a>110</td><td></td><td></td><td></td><td></td><td class="s"> bootstrap(@_);<div class="calls"><div class="calls_out"> # spent 238µs making 1 call to <a href="DynaLoader-pm-sub.html#116">DynaLoader::bootstrap</a></div></div></td></tr>
<tr><td class="h"><a name="111"></a>111</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="112"></a>112</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="113"></a>113</td><td></td><td></td><td></td><td></td><td class="s"># The bootstrap function cannot be autoloaded (without complications)</td></tr>
<tr><td class="h"><a name="114"></a>114</td><td></td><td></td><td></td><td></td><td class="s"># so we define it here:</td></tr>
<tr><td class="h"><a name="115"></a>115</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="116"></a>116</td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 22.8ms (817µs+22.0) within DynaLoader::bootstrap which was called 8 times, avg 2.85ms/call:
# once (119µs+20.1ms) by SimpleDB::Client::BEGIN@48 at <a href="XML-Bare-pm-sub.html#18">line 18 of XML/Bare.pm</a>
# once (118µs+380µs) by Moose::Exporter::BEGIN@12 at <a href="List-MoreUtils-pm-sub.html#24">line 24 of List/MoreUtils.pm</a>
# once (153µs+344µs) by Data::OptList::BEGIN@7 at <a href="Params-Util-pm-sub.html#88">line 88 of Params/Util.pm</a>
# once (104µs+250µs) by SimpleDB::Client::BEGIN@47 at <a href="Digest-SHA-pm-sub.html#171">line 171 of Digest/SHA.pm</a>
# once (89µs+262µs) by SimpleDB::Client::BEGIN@51 at <a href="Time-HiRes-pm-sub.html#65">line 65 of Time/HiRes.pm</a>
# once (81µs+254µs) by LWP::UserAgent::BEGIN@10 at <a href="Storable-pm-sub.html#67">line 67 of Storable.pm</a>
# once (83µs+212µs) by Class::MOP::Mixin::HasMethods::BEGIN@12 at <a href="Sub-Name-pm-sub.html#55">line 55 of Sub/Name.pm</a>
# once (69µs+169µs) by Moose::BEGIN@14 at <a href="DynaLoader-pm-sub.html#110">line 110</a></div></div>sub bootstrap {</td></tr>
<tr><td class="h"><a name="117"></a>117</td><td></td><td></td><td></td><td></td><td class="s"> # use local vars to enable $module.bs script to edit values</td></tr>
<tr><td class="h"><a name="118"></a>118</td><td class="c0">308</td><td class="c0"><span title="Avg 74µs">22.8ms</span></td><td></td><td></td><td class="s"> local(@args) = @_;</td></tr>
<tr><td class="h"><a name="119"></a>119</td><td></td><td></td><td></td><td></td><td class="s"> local($module) = $args[0];</td></tr>
<tr><td class="h"><a name="120"></a>120</td><td></td><td></td><td></td><td></td><td class="s"> local(@dirs, $file);</td></tr>
<tr><td class="h"><a name="121"></a>121</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="122"></a>122</td><td></td><td></td><td></td><td></td><td class="s"> unless ($module) {</td></tr>
<tr><td class="h"><a name="123"></a>123</td><td></td><td></td><td></td><td></td><td class="s"> require Carp;</td></tr>
<tr><td class="h"><a name="124"></a>124</td><td></td><td></td><td></td><td></td><td class="s"> Carp::confess("Usage: DynaLoader::bootstrap(module)");</td></tr>
<tr><td class="h"><a name="125"></a>125</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="126"></a>126</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="127"></a>127</td><td></td><td></td><td></td><td></td><td class="s"> # A common error on platforms which don't support dynamic loading.</td></tr>
<tr><td class="h"><a name="128"></a>128</td><td></td><td></td><td></td><td></td><td class="s"> # Since it's fatal and potentially confusing we give a detailed message.</td></tr>
<tr><td class="h"><a name="129"></a>129</td><td></td><td></td><td></td><td></td><td class="s"> croak("Can't load module $module, dynamic loading not available in this perl.\n".</td></tr>
<tr><td class="h"><a name="130"></a>130</td><td></td><td></td><td></td><td></td><td class="s"> " (You may need to build a new perl executable which either supports\n".</td></tr>
<tr><td class="h"><a name="131"></a>131</td><td></td><td></td><td></td><td></td><td class="s"> " dynamic loading or has the $module module statically linked into it.)\n")</td></tr>
<tr><td class="h"><a name="132"></a>132</td><td></td><td></td><td></td><td></td><td class="s"> unless defined(&dl_load_file);</td></tr>
<tr><td class="h"><a name="133"></a>133</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="134"></a>134</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="135"></a>135</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="136"></a>136</td><td></td><td></td><td></td><td></td><td class="s"> my @modparts = split(/::/,$module);</td></tr>
<tr><td class="h"><a name="137"></a>137</td><td></td><td></td><td></td><td></td><td class="s"> my $modfname = $modparts[-1];</td></tr>
<tr><td class="h"><a name="138"></a>138</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="139"></a>139</td><td></td><td></td><td></td><td></td><td class="s"> # Some systems have restrictions on files names for DLL's etc.</td></tr>
<tr><td class="h"><a name="140"></a>140</td><td></td><td></td><td></td><td></td><td class="s"> # mod2fname returns appropriate file base name (typically truncated)</td></tr>
<tr><td class="h"><a name="141"></a>141</td><td></td><td></td><td></td><td></td><td class="s"> # It may also edit @modparts if required.</td></tr>
<tr><td class="h"><a name="142"></a>142</td><td></td><td></td><td></td><td></td><td class="s"> $modfname = &mod2fname(\@modparts) if defined &mod2fname;</td></tr>
<tr><td class="h"><a name="143"></a>143</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="144"></a>144</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="145"></a>145</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="146"></a>146</td><td></td><td></td><td></td><td></td><td class="s"> my $modpname = join('/',@modparts);</td></tr>
<tr><td class="h"><a name="147"></a>147</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="148"></a>148</td><td></td><td></td><td></td><td></td><td class="s"> print STDERR "DynaLoader::bootstrap for $module ",</td></tr>
<tr><td class="h"><a name="149"></a>149</td><td></td><td></td><td></td><td></td><td class="s"> "(auto/$modpname/$modfname.$dl_dlext)\n"</td></tr>
<tr><td class="h"><a name="150"></a>150</td><td></td><td></td><td></td><td></td><td class="s"> if $dl_debug;</td></tr>
<tr><td class="h"><a name="151"></a>151</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="152"></a>152</td><td></td><td></td><td></td><td></td><td class="s"> foreach (@INC) {</td></tr>
<tr><td class="h"><a name="153"></a>153</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="154"></a>154</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="155"></a>155</td><td></td><td></td><td></td><td></td><td class="s"> my $dir = "$_/auto/$modpname";</td></tr>
<tr><td class="h"><a name="156"></a>156</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="157"></a>157</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="158"></a>158</td><td></td><td></td><td></td><td></td><td class="s"> next unless -d $dir; # skip over uninteresting directories<div class="calls"><div class="calls_out"> # spent 139µs making 26 calls to <a href="DynaLoader-pm-sub.html#DynaLoader__CORE_ftdir">DynaLoader::CORE:ftdir</a>, avg 5µs/call</div></div></td></tr>
<tr><td class="h"><a name="159"></a>159</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="160"></a>160</td><td></td><td></td><td></td><td></td><td class="s"> # check for common cases to avoid autoload of dl_findfile</td></tr>
<tr><td class="h"><a name="161"></a>161</td><td></td><td></td><td></td><td></td><td class="s"> my $try = "$dir/$modfname.$dl_dlext";</td></tr>
<tr><td class="h"><a name="162"></a>162</td><td></td><td></td><td></td><td></td><td class="s"> last if $file = ($do_expand) ? dl_expandspec($try) : ((-f $try) && $try);<div class="calls"><div class="calls_out"> # spent 90µs making 8 calls to <a href="DynaLoader-pm-sub.html#DynaLoader__CORE_ftfile">DynaLoader::CORE:ftfile</a>, avg 11µs/call</div></div></td></tr>
<tr><td class="h"><a name="163"></a>163</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="164"></a>164</td><td></td><td></td><td></td><td></td><td class="s"> # no luck here, save dir for possible later dl_findfile search</td></tr>
<tr><td class="h"><a name="165"></a>165</td><td></td><td></td><td></td><td></td><td class="s"> push @dirs, $dir;</td></tr>
<tr><td class="h"><a name="166"></a>166</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="167"></a>167</td><td></td><td></td><td></td><td></td><td class="s"> # last resort, let dl_findfile have a go in all known locations</td></tr>
<tr><td class="h"><a name="168"></a>168</td><td></td><td></td><td></td><td></td><td class="s"> $file = dl_findfile(map("-L$_",@dirs,@INC), $modfname) unless $file;</td></tr>
<tr><td class="h"><a name="169"></a>169</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="170"></a>170</td><td></td><td></td><td></td><td></td><td class="s"> croak("Can't locate loadable object for module $module in \@INC (\@INC contains: @INC)")</td></tr>
<tr><td class="h"><a name="171"></a>171</td><td></td><td></td><td></td><td></td><td class="s"> unless $file; # wording similar to error from 'require'</td></tr>
<tr><td class="h"><a name="172"></a>172</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="173"></a>173</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="174"></a>174</td><td></td><td></td><td></td><td></td><td class="s"> my $bootname = "boot_$module";</td></tr>
<tr><td class="h"><a name="175"></a>175</td><td></td><td></td><td></td><td></td><td class="s"> $bootname =~ s/\W/_/g;<div class="calls"><div class="calls_out"> # spent 27µs making 8 calls to <a href="DynaLoader-pm-sub.html#DynaLoader__CORE_subst">DynaLoader::CORE:subst</a>, avg 3µs/call</div></div></td></tr>
<tr><td class="h"><a name="176"></a>176</td><td></td><td></td><td></td><td></td><td class="s"> @dl_require_symbols = ($bootname);</td></tr>
<tr><td class="h"><a name="177"></a>177</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="178"></a>178</td><td></td><td></td><td></td><td></td><td class="s"> # Execute optional '.bootstrap' perl script for this module.</td></tr>
<tr><td class="h"><a name="179"></a>179</td><td></td><td></td><td></td><td></td><td class="s"> # The .bs file can be used to configure @dl_resolve_using etc to</td></tr>
<tr><td class="h"><a name="180"></a>180</td><td></td><td></td><td></td><td></td><td class="s"> # match the needs of the individual module on this architecture.</td></tr>
<tr><td class="h"><a name="181"></a>181</td><td></td><td></td><td></td><td></td><td class="s"> my $bs = $file;</td></tr>
<tr><td class="h"><a name="182"></a>182</td><td></td><td></td><td></td><td></td><td class="s"> $bs =~ s/(\.\w+)?(;\d*)?$/\.bs/; # look for .bs 'beside' the library<div class="calls"><div class="calls_out"> # spent 282µs making 8 calls to <a href="DynaLoader-pm-sub.html#DynaLoader__CORE_subst">DynaLoader::CORE:subst</a>, avg 35µs/call</div></div></td></tr>
<tr><td class="h"><a name="183"></a>183</td><td></td><td></td><td></td><td></td><td class="s"> if (-s $bs) { # only read file if it's not empty<div class="calls"><div class="calls_out"> # spent 54µs making 8 calls to <a href="DynaLoader-pm-sub.html#DynaLoader__CORE_ftsize">DynaLoader::CORE:ftsize</a>, avg 7µs/call</div></div></td></tr>
<tr><td class="h"><a name="184"></a>184</td><td></td><td></td><td></td><td></td><td class="s"> print STDERR "BS: $bs ($^O, $dlsrc)\n" if $dl_debug;</td></tr>
<tr><td class="h"><a name="185"></a>185</td><td></td><td></td><td></td><td></td><td class="s"> eval { do $bs; };</td></tr>
<tr><td class="h"><a name="186"></a>186</td><td></td><td></td><td></td><td></td><td class="s"> warn "$bs: $@\n" if $@;</td></tr>
<tr><td class="h"><a name="187"></a>187</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="188"></a>188</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="189"></a>189</td><td></td><td></td><td></td><td></td><td class="s"> my $boot_symbol_ref;</td></tr>
<tr><td class="h"><a name="190"></a>190</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="191"></a>191</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="192"></a>192</td><td></td><td></td><td></td><td></td><td class="s"> if ($boot_symbol_ref = dl_find_symbol(0, $bootname)) {<div class="calls"><div class="calls_out"> # spent 62µs making 8 calls to <a href="DynaLoader-pm-sub.html#DynaLoader__dl_find_symbol">DynaLoader::dl_find_symbol</a>, avg 8µs/call</div></div></td></tr>
<tr><td class="h"><a name="193"></a>193</td><td></td><td></td><td></td><td></td><td class="s"> goto boot; #extension library has already been loaded, e.g. darwin</td></tr>
<tr><td class="h"><a name="194"></a>194</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="195"></a>195</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="196"></a>196</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="197"></a>197</td><td></td><td></td><td></td><td></td><td class="s"> # Many dynamic extension loading problems will appear to come from</td></tr>
<tr><td class="h"><a name="198"></a>198</td><td></td><td></td><td></td><td></td><td class="s"> # this section of code: XYZ failed at line 123 of DynaLoader.pm.</td></tr>
<tr><td class="h"><a name="199"></a>199</td><td></td><td></td><td></td><td></td><td class="s"> # Often these errors are actually occurring in the initialisation</td></tr>
<tr><td class="h"><a name="200"></a>200</td><td></td><td></td><td></td><td></td><td class="s"> # C code of the extension XS file. Perl reports the error as being</td></tr>
<tr><td class="h"><a name="201"></a>201</td><td></td><td></td><td></td><td></td><td class="s"> # in this perl code simply because this was the last perl code</td></tr>
<tr><td class="h"><a name="202"></a>202</td><td></td><td></td><td></td><td></td><td class="s"> # it executed.</td></tr>
<tr><td class="h"><a name="203"></a>203</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="204"></a>204</td><td></td><td></td><td></td><td></td><td class="s"> my $libref = dl_load_file($file, $module->dl_load_flags) or<div class="calls"><div class="calls_out"> # spent 20.3ms making 8 calls to <a href="DynaLoader-pm-sub.html#DynaLoader__dl_load_file">DynaLoader::dl_load_file</a>, avg 2.53ms/call
# spent 15µs making 8 calls to <a href="DynaLoader-pm-sub.html#41">DynaLoader::dl_load_flags</a>, avg 2µs/call</div></div></td></tr>
<tr><td class="h"><a name="205"></a>205</td><td></td><td></td><td></td><td></td><td class="s"> croak("Can't load '$file' for module $module: ".dl_error());</td></tr>
<tr><td class="h"><a name="206"></a>206</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="207"></a>207</td><td></td><td></td><td></td><td></td><td class="s"> push(@dl_librefs,$libref); # record loaded object</td></tr>
<tr><td class="h"><a name="208"></a>208</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="209"></a>209</td><td></td><td></td><td></td><td></td><td class="s"> my @unresolved = dl_undef_symbols();<div class="calls"><div class="calls_out"> # spent 17µs making 8 calls to <a href="DynaLoader-pm-sub.html#DynaLoader__dl_undef_symbols">DynaLoader::dl_undef_symbols</a>, avg 2µs/call</div></div></td></tr>
<tr><td class="h"><a name="210"></a>210</td><td></td><td></td><td></td><td></td><td class="s"> if (@unresolved) {</td></tr>
<tr><td class="h"><a name="211"></a>211</td><td></td><td></td><td></td><td></td><td class="s"> require Carp;</td></tr>
<tr><td class="h"><a name="212"></a>212</td><td></td><td></td><td></td><td></td><td class="s"> Carp::carp("Undefined symbols present after loading $file: @unresolved\n");</td></tr>
<tr><td class="h"><a name="213"></a>213</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="214"></a>214</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="215"></a>215</td><td></td><td></td><td></td><td></td><td class="s"> $boot_symbol_ref = dl_find_symbol($libref, $bootname) or<div class="calls"><div class="calls_out"> # spent 21µs making 8 calls to <a href="DynaLoader-pm-sub.html#DynaLoader__dl_find_symbol">DynaLoader::dl_find_symbol</a>, avg 3µs/call</div></div></td></tr>
<tr><td class="h"><a name="216"></a>216</td><td></td><td></td><td></td><td></td><td class="s"> croak("Can't find '$bootname' symbol in $file\n");</td></tr>
<tr><td class="h"><a name="217"></a>217</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="218"></a>218</td><td></td><td></td><td></td><td></td><td class="s"> push(@dl_modules, $module); # record loaded module</td></tr>
<tr><td class="h"><a name="219"></a>219</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="220"></a>220</td><td></td><td></td><td></td><td></td><td class="s"> boot:<div class="calls"><div class="calls_out"> # spent 56µs making 8 calls to <a href="DynaLoader-pm-sub.html#DynaLoader__dl_install_xsub">DynaLoader::dl_install_xsub</a>, avg 7µs/call</div></div></td></tr>
<tr><td class="h"><a name="221"></a>221</td><td></td><td></td><td></td><td></td><td class="s"> my $xs = dl_install_xsub("${module}::bootstrap", $boot_symbol_ref, $file);</td></tr>
<tr><td class="h"><a name="222"></a>222</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="223"></a>223</td><td></td><td></td><td></td><td></td><td class="s"> # See comment block above</td></tr>
<tr><td class="h"><a name="224"></a>224</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="225"></a>225</td><td></td><td></td><td></td><td></td><td class="s"> push(@dl_shared_objects, $file); # record files loaded</td></tr>
<tr><td class="h"><a name="226"></a>226</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="227"></a>227</td><td></td><td></td><td></td><td></td><td class="s"> &$xs(@args);<div class="calls"><div class="calls_out"> # spent 557µs making 1 call to <a href="XML-Bare-pm-sub.html#XML__Bare__bootstrap">XML::Bare::bootstrap</a>
# spent 97µs making 1 call to <a href="Digest-SHA-pm-sub.html#Digest__SHA__bootstrap">Digest::SHA::bootstrap</a>
# spent 94µs making 1 call to <a href="List-MoreUtils-pm-sub.html#List__MoreUtils__bootstrap">List::MoreUtils::bootstrap</a>
# spent 85µs making 1 call to <a href="Storable-pm-sub.html#Storable__bootstrap">Storable::bootstrap</a>
# spent 66µs making 1 call to <a href="Time-HiRes-pm-sub.html#Time__HiRes__bootstrap">Time::HiRes::bootstrap</a>
# spent 51µs making 1 call to <a href="Params-Util-pm-sub.html#Params__Util__bootstrap">Params::Util::bootstrap</a>
# spent 16µs making 1 call to <a href="Sub-Name-pm-sub.html#Sub__Name__bootstrap">Sub::Name::bootstrap</a>
# spent 15µs making 1 call to <a href="Moose-pm-sub.html#Moose__bootstrap">Moose::bootstrap</a></div></div></td></tr>
<tr><td class="h"><a name="228"></a>228</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="229"></a>229</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="230"></a>230</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="231"></a>231</td><td></td><td></td><td></td><td></td><td class="s">#sub _check_file { # private utility to handle dl_expandspec vs -f tests</td></tr>
<tr><td class="h"><a name="232"></a>232</td><td></td><td></td><td></td><td></td><td class="s"># my($file) = @_;</td></tr>
<tr><td class="h"><a name="233"></a>233</td><td></td><td></td><td></td><td></td><td class="s"># return $file if (!$do_expand && -f $file); # the common case</td></tr>
<tr><td class="h"><a name="234"></a>234</td><td></td><td></td><td></td><td></td><td class="s"># return $file if ( $do_expand && ($file=dl_expandspec($file)));</td></tr>
<tr><td class="h"><a name="235"></a>235</td><td></td><td></td><td></td><td></td><td class="s"># return undef;</td></tr>
<tr><td class="h"><a name="236"></a>236</td><td></td><td></td><td></td><td></td><td class="s">#}</td></tr>
<tr><td class="h"><a name="237"></a>237</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="238"></a>238</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="239"></a>239</td><td></td><td></td><td></td><td></td><td class="s"># Let autosplit and the autoloader deal with these functions:</td></tr>
<tr><td class="h"><a name="240"></a>240</td><td></td><td></td><td></td><td></td><td class="s">__END__</td></tr>
<tr><td class="h"><a name="241"></a>241</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="242"></a>242</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="243"></a>243</td><td></td><td></td><td></td><td></td><td class="s">sub dl_findfile {</td></tr>
<tr><td class="h"><a name="244"></a>244</td><td></td><td></td><td></td><td></td><td class="s"> # Read ext/DynaLoader/DynaLoader.doc for detailed information.</td></tr>
<tr><td class="h"><a name="245"></a>245</td><td></td><td></td><td></td><td></td><td class="s"> # This function does not automatically consider the architecture</td></tr>
<tr><td class="h"><a name="246"></a>246</td><td></td><td></td><td></td><td></td><td class="s"> # or the perl library auto directories.</td></tr>
<tr><td class="h"><a name="247"></a>247</td><td></td><td></td><td></td><td></td><td class="s"> my (@args) = @_;</td></tr>
<tr><td class="h"><a name="248"></a>248</td><td></td><td></td><td></td><td></td><td class="s"> my (@dirs, $dir); # which directories to search</td></tr>
<tr><td class="h"><a name="249"></a>249</td><td></td><td></td><td></td><td></td><td class="s"> my (@found); # full paths to real files we have found</td></tr>
<tr><td class="h"><a name="250"></a>250</td><td></td><td></td><td></td><td></td><td class="s"> #my $dl_ext= 'bundle'; # $Config::Config{'dlext'} suffix for perl extensions</td></tr>
<tr><td class="h"><a name="251"></a>251</td><td></td><td></td><td></td><td></td><td class="s"> #my $dl_so = 'dylib'; # $Config::Config{'so'} suffix for shared libraries</td></tr>
<tr><td class="h"><a name="252"></a>252</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="253"></a>253</td><td></td><td></td><td></td><td></td><td class="s"> print STDERR "dl_findfile(@args)\n" if $dl_debug;</td></tr>
<tr><td class="h"><a name="254"></a>254</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="255"></a>255</td><td></td><td></td><td></td><td></td><td class="s"> # accumulate directories but process files as they appear</td></tr>
<tr><td class="h"><a name="256"></a>256</td><td></td><td></td><td></td><td></td><td class="s"> arg: foreach(@args) {</td></tr>
<tr><td class="h"><a name="257"></a>257</td><td></td><td></td><td></td><td></td><td class="s"> # Special fast case: full filepath requires no search</td></tr>
<tr><td class="h"><a name="258"></a>258</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="259"></a>259</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="260"></a>260</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="261"></a>261</td><td></td><td></td><td></td><td></td><td class="s"> if (m:/: && -f $_) {</td></tr>
<tr><td class="h"><a name="262"></a>262</td><td></td><td></td><td></td><td></td><td class="s"> push(@found,$_);</td></tr>
<tr><td class="h"><a name="263"></a>263</td><td></td><td></td><td></td><td></td><td class="s"> last arg unless wantarray;</td></tr>
<tr><td class="h"><a name="264"></a>264</td><td></td><td></td><td></td><td></td><td class="s"> next;</td></tr>
<tr><td class="h"><a name="265"></a>265</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="266"></a>266</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="267"></a>267</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="268"></a>268</td><td></td><td></td><td></td><td></td><td class="s"> # Deal with directories first:</td></tr>
<tr><td class="h"><a name="269"></a>269</td><td></td><td></td><td></td><td></td><td class="s"> # Using a -L prefix is the preferred option (faster and more robust)</td></tr>
<tr><td class="h"><a name="270"></a>270</td><td></td><td></td><td></td><td></td><td class="s"> if (m:^-L:) { s/^-L//; push(@dirs, $_); next; }</td></tr>
<tr><td class="h"><a name="271"></a>271</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="272"></a>272</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="273"></a>273</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="274"></a>274</td><td></td><td></td><td></td><td></td><td class="s"> # Otherwise we try to try to spot directories by a heuristic</td></tr>
<tr><td class="h"><a name="275"></a>275</td><td></td><td></td><td></td><td></td><td class="s"> # (this is a more complicated issue than it first appears)</td></tr>
<tr><td class="h"><a name="276"></a>276</td><td></td><td></td><td></td><td></td><td class="s"> if (m:/: && -d $_) { push(@dirs, $_); next; }</td></tr>
<tr><td class="h"><a name="277"></a>277</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="278"></a>278</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="279"></a>279</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="280"></a>280</td><td></td><td></td><td></td><td></td><td class="s"> # Only files should get this far...</td></tr>
<tr><td class="h"><a name="281"></a>281</td><td></td><td></td><td></td><td></td><td class="s"> my(@names, $name); # what filenames to look for</td></tr>
<tr><td class="h"><a name="282"></a>282</td><td></td><td></td><td></td><td></td><td class="s"> if (m:-l: ) { # convert -lname to appropriate library name</td></tr>
<tr><td class="h"><a name="283"></a>283</td><td></td><td></td><td></td><td></td><td class="s"> s/-l//;</td></tr>
<tr><td class="h"><a name="284"></a>284</td><td></td><td></td><td></td><td></td><td class="s"> push(@names,"lib$_.$dl_so");</td></tr>
<tr><td class="h"><a name="285"></a>285</td><td></td><td></td><td></td><td></td><td class="s"> push(@names,"lib$_.a");</td></tr>
<tr><td class="h"><a name="286"></a>286</td><td></td><td></td><td></td><td></td><td class="s"> } else { # Umm, a bare name. Try various alternatives:</td></tr>
<tr><td class="h"><a name="287"></a>287</td><td></td><td></td><td></td><td></td><td class="s"> # these should be ordered with the most likely first</td></tr>
<tr><td class="h"><a name="288"></a>288</td><td></td><td></td><td></td><td></td><td class="s"> push(@names,"$_.$dl_dlext") unless m/\.$dl_dlext$/o;</td></tr>
<tr><td class="h"><a name="289"></a>289</td><td></td><td></td><td></td><td></td><td class="s"> push(@names,"$_.$dl_so") unless m/\.$dl_so$/o;</td></tr>
<tr><td class="h"><a name="290"></a>290</td><td></td><td></td><td></td><td></td><td class="s"> push(@names,"lib$_.$dl_so") unless m:/:;</td></tr>
<tr><td class="h"><a name="291"></a>291</td><td></td><td></td><td></td><td></td><td class="s"> push(@names,"$_.a") if !m/\.a$/ and $dlsrc eq "dl_dld.xs";</td></tr>
<tr><td class="h"><a name="292"></a>292</td><td></td><td></td><td></td><td></td><td class="s"> push(@names, $_);</td></tr>
<tr><td class="h"><a name="293"></a>293</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="294"></a>294</td><td></td><td></td><td></td><td></td><td class="s"> my $dirsep = '/';</td></tr>
<tr><td class="h"><a name="295"></a>295</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="296"></a>296</td><td></td><td></td><td></td><td></td><td class="s"> foreach $dir (@dirs, @dl_library_path) {</td></tr>
<tr><td class="h"><a name="297"></a>297</td><td></td><td></td><td></td><td></td><td class="s"> next unless -d $dir;</td></tr>
<tr><td class="h"><a name="298"></a>298</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="299"></a>299</td><td></td><td></td><td></td><td></td><td class="s"> foreach $name (@names) {</td></tr>
<tr><td class="h"><a name="300"></a>300</td><td></td><td></td><td></td><td></td><td class="s"> my($file) = "$dir$dirsep$name";</td></tr>
<tr><td class="h"><a name="301"></a>301</td><td></td><td></td><td></td><td></td><td class="s"> print STDERR " checking in $dir for $name\n" if $dl_debug;</td></tr>
<tr><td class="h"><a name="302"></a>302</td><td></td><td></td><td></td><td></td><td class="s"> $file = ($do_expand) ? dl_expandspec($file) : (-f $file && $file);</td></tr>
<tr><td class="h"><a name="303"></a>303</td><td></td><td></td><td></td><td></td><td class="s"> #$file = _check_file($file);</td></tr>
<tr><td class="h"><a name="304"></a>304</td><td></td><td></td><td></td><td></td><td class="s"> if ($file) {</td></tr>
<tr><td class="h"><a name="305"></a>305</td><td></td><td></td><td></td><td></td><td class="s"> push(@found, $file);</td></tr>
<tr><td class="h"><a name="306"></a>306</td><td></td><td></td><td></td><td></td><td class="s"> next arg; # no need to look any further</td></tr>
<tr><td class="h"><a name="307"></a>307</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="308"></a>308</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="309"></a>309</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="310"></a>310</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="311"></a>311</td><td></td><td></td><td></td><td></td><td class="s"> if ($dl_debug) {</td></tr>
<tr><td class="h"><a name="312"></a>312</td><td></td><td></td><td></td><td></td><td class="s"> foreach(@dirs) {</td></tr>
<tr><td class="h"><a name="313"></a>313</td><td></td><td></td><td></td><td></td><td class="s"> print STDERR " dl_findfile ignored non-existent directory: $_\n" unless -d $_;</td></tr>
<tr><td class="h"><a name="314"></a>314</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="315"></a>315</td><td></td><td></td><td></td><td></td><td class="s"> print STDERR "dl_findfile found: @found\n";</td></tr>
<tr><td class="h"><a name="316"></a>316</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="317"></a>317</td><td></td><td></td><td></td><td></td><td class="s"> return $found[0] unless wantarray;</td></tr>
<tr><td class="h"><a name="318"></a>318</td><td></td><td></td><td></td><td></td><td class="s"> @found;</td></tr>
<tr><td class="h"><a name="319"></a>319</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="320"></a>320</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="321"></a>321</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="322"></a>322</td><td></td><td></td><td></td><td></td><td class="s">sub dl_expandspec {</td></tr>
<tr><td class="h"><a name="323"></a>323</td><td></td><td></td><td></td><td></td><td class="s"> my($spec) = @_;</td></tr>
<tr><td class="h"><a name="324"></a>324</td><td></td><td></td><td></td><td></td><td class="s"> # Optional function invoked if DynaLoader.pm sets $do_expand.</td></tr>
<tr><td class="h"><a name="325"></a>325</td><td></td><td></td><td></td><td></td><td class="s"> # Most systems do not require or use this function.</td></tr>
<tr><td class="h"><a name="326"></a>326</td><td></td><td></td><td></td><td></td><td class="s"> # Some systems may implement it in the dl_*.xs file in which case</td></tr>
<tr><td class="h"><a name="327"></a>327</td><td></td><td></td><td></td><td></td><td class="s"> # this autoload version will not be called but is harmless.</td></tr>
<tr><td class="h"><a name="328"></a>328</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="329"></a>329</td><td></td><td></td><td></td><td></td><td class="s"> # This function is designed to deal with systems which treat some</td></tr>
<tr><td class="h"><a name="330"></a>330</td><td></td><td></td><td></td><td></td><td class="s"> # 'filenames' in a special way. For example VMS 'Logical Names'</td></tr>
<tr><td class="h"><a name="331"></a>331</td><td></td><td></td><td></td><td></td><td class="s"> # (something like unix environment variables - but different).</td></tr>
<tr><td class="h"><a name="332"></a>332</td><td></td><td></td><td></td><td></td><td class="s"> # This function should recognise such names and expand them into</td></tr>
<tr><td class="h"><a name="333"></a>333</td><td></td><td></td><td></td><td></td><td class="s"> # full file paths.</td></tr>
<tr><td class="h"><a name="334"></a>334</td><td></td><td></td><td></td><td></td><td class="s"> # Must return undef if $spec is invalid or file does not exist.</td></tr>
<tr><td class="h"><a name="335"></a>335</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="336"></a>336</td><td></td><td></td><td></td><td></td><td class="s"> my $file = $spec; # default output to input</td></tr>
<tr><td class="h"><a name="337"></a>337</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="338"></a>338</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="339"></a>339</td><td></td><td></td><td></td><td></td><td class="s"> return undef unless -f $file;</td></tr>
<tr><td class="h"><a name="340"></a>340</td><td></td><td></td><td></td><td></td><td class="s"> </td></tr>
<tr><td class="h"><a name="341"></a>341</td><td></td><td></td><td></td><td></td><td class="s"> print STDERR "dl_expandspec($spec) => $file\n" if $dl_debug;</td></tr>
<tr><td class="h"><a name="342"></a>342</td><td></td><td></td><td></td><td></td><td class="s"> $file;</td></tr>
<tr><td class="h"><a name="343"></a>343</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="344"></a>344</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="345"></a>345</td><td></td><td></td><td></td><td></td><td class="s">sub dl_find_symbol_anywhere</td></tr>
<tr><td class="h"><a name="346"></a>346</td><td></td><td></td><td></td><td></td><td class="s">{</td></tr>
<tr><td class="h"><a name="347"></a>347</td><td></td><td></td><td></td><td></td><td class="s"> my $sym = shift;</td></tr>
<tr><td class="h"><a name="348"></a>348</td><td></td><td></td><td></td><td></td><td class="s"> my $libref;</td></tr>
<tr><td class="h"><a name="349"></a>349</td><td></td><td></td><td></td><td></td><td class="s"> foreach $libref (@dl_librefs) {</td></tr>
<tr><td class="h"><a name="350"></a>350</td><td></td><td></td><td></td><td></td><td class="s"> my $symref = dl_find_symbol($libref,$sym);</td></tr>
<tr><td class="h"><a name="351"></a>351</td><td></td><td></td><td></td><td></td><td class="s"> return $symref if $symref;</td></tr>
<tr><td class="h"><a name="352"></a>352</td><td></td><td></td><td></td><td></td><td class="s"> }</td></tr>
<tr><td class="h"><a name="353"></a>353</td><td></td><td></td><td></td><td></td><td class="s"> return undef;</td></tr>
<tr><td class="h"><a name="354"></a>354</td><td></td><td></td><td></td><td></td><td class="s">}</td></tr>
<tr><td class="h"><a name="355"></a>355</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="356"></a>356</td><td></td><td></td><td></td><td></td><td class="s">=head1 NAME</td></tr>
<tr><td class="h"><a name="357"></a>357</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="358"></a>358</td><td></td><td></td><td></td><td></td><td class="s">DynaLoader - Dynamically load C libraries into Perl code</td></tr>
<tr><td class="h"><a name="359"></a>359</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="360"></a>360</td><td></td><td></td><td></td><td></td><td class="s">=head1 SYNOPSIS</td></tr>
<tr><td class="h"><a name="361"></a>361</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="362"></a>362</td><td></td><td></td><td></td><td></td><td class="s"> package YourPackage;</td></tr>
<tr><td class="h"><a name="363"></a>363</td><td></td><td></td><td></td><td></td><td class="s"> require DynaLoader;</td></tr>
<tr><td class="h"><a name="364"></a>364</td><td></td><td></td><td></td><td></td><td class="s"> @ISA = qw(... DynaLoader ...);</td></tr>
<tr><td class="h"><a name="365"></a>365</td><td></td><td></td><td></td><td></td><td class="s"> bootstrap YourPackage;</td></tr>
<tr><td class="h"><a name="366"></a>366</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="367"></a>367</td><td></td><td></td><td></td><td></td><td class="s"> # optional method for 'global' loading</td></tr>
<tr><td class="h"><a name="368"></a>368</td><td></td><td></td><td></td><td></td><td class="s"> sub dl_load_flags { 0x01 } </td></tr>
<tr><td class="h"><a name="369"></a>369</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="370"></a>370</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="371"></a>371</td><td></td><td></td><td></td><td></td><td class="s">=head1 DESCRIPTION</td></tr>
<tr><td class="h"><a name="372"></a>372</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="373"></a>373</td><td></td><td></td><td></td><td></td><td class="s">This document defines a standard generic interface to the dynamic</td></tr>
<tr><td class="h"><a name="374"></a>374</td><td></td><td></td><td></td><td></td><td class="s">linking mechanisms available on many platforms. Its primary purpose is</td></tr>
<tr><td class="h"><a name="375"></a>375</td><td></td><td></td><td></td><td></td><td class="s">to implement automatic dynamic loading of Perl modules.</td></tr>
<tr><td class="h"><a name="376"></a>376</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="377"></a>377</td><td></td><td></td><td></td><td></td><td class="s">This document serves as both a specification for anyone wishing to</td></tr>
<tr><td class="h"><a name="378"></a>378</td><td></td><td></td><td></td><td></td><td class="s">implement the DynaLoader for a new platform and as a guide for</td></tr>
<tr><td class="h"><a name="379"></a>379</td><td></td><td></td><td></td><td></td><td class="s">anyone wishing to use the DynaLoader directly in an application.</td></tr>
<tr><td class="h"><a name="380"></a>380</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="381"></a>381</td><td></td><td></td><td></td><td></td><td class="s">The DynaLoader is designed to be a very simple high-level</td></tr>
<tr><td class="h"><a name="382"></a>382</td><td></td><td></td><td></td><td></td><td class="s">interface that is sufficiently general to cover the requirements</td></tr>
<tr><td class="h"><a name="383"></a>383</td><td></td><td></td><td></td><td></td><td class="s">of SunOS, HP-UX, NeXT, Linux, VMS and other platforms.</td></tr>
<tr><td class="h"><a name="384"></a>384</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="385"></a>385</td><td></td><td></td><td></td><td></td><td class="s">It is also hoped that the interface will cover the needs of OS/2, NT</td></tr>
<tr><td class="h"><a name="386"></a>386</td><td></td><td></td><td></td><td></td><td class="s">etc and also allow pseudo-dynamic linking (using C<ld -A> at runtime).</td></tr>
<tr><td class="h"><a name="387"></a>387</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="388"></a>388</td><td></td><td></td><td></td><td></td><td class="s">It must be stressed that the DynaLoader, by itself, is practically</td></tr>
<tr><td class="h"><a name="389"></a>389</td><td></td><td></td><td></td><td></td><td class="s">useless for accessing non-Perl libraries because it provides almost no</td></tr>
<tr><td class="h"><a name="390"></a>390</td><td></td><td></td><td></td><td></td><td class="s">Perl-to-C 'glue'. There is, for example, no mechanism for calling a C</td></tr>
<tr><td class="h"><a name="391"></a>391</td><td></td><td></td><td></td><td></td><td class="s">library function or supplying arguments. A C::DynaLib module</td></tr>
<tr><td class="h"><a name="392"></a>392</td><td></td><td></td><td></td><td></td><td class="s">is available from CPAN sites which performs that function for some</td></tr>
<tr><td class="h"><a name="393"></a>393</td><td></td><td></td><td></td><td></td><td class="s">common system types. And since the year 2000, there's also Inline::C,</td></tr>
<tr><td class="h"><a name="394"></a>394</td><td></td><td></td><td></td><td></td><td class="s">a module that allows you to write Perl subroutines in C. Also available</td></tr>
<tr><td class="h"><a name="395"></a>395</td><td></td><td></td><td></td><td></td><td class="s">from your local CPAN site.</td></tr>
<tr><td class="h"><a name="396"></a>396</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="397"></a>397</td><td></td><td></td><td></td><td></td><td class="s">DynaLoader Interface Summary</td></tr>
<tr><td class="h"><a name="398"></a>398</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="399"></a>399</td><td></td><td></td><td></td><td></td><td class="s"> @dl_library_path</td></tr>
<tr><td class="h"><a name="400"></a>400</td><td></td><td></td><td></td><td></td><td class="s"> @dl_resolve_using</td></tr>
<tr><td class="h"><a name="401"></a>401</td><td></td><td></td><td></td><td></td><td class="s"> @dl_require_symbols</td></tr>
<tr><td class="h"><a name="402"></a>402</td><td></td><td></td><td></td><td></td><td class="s"> $dl_debug</td></tr>
<tr><td class="h"><a name="403"></a>403</td><td></td><td></td><td></td><td></td><td class="s"> @dl_librefs</td></tr>
<tr><td class="h"><a name="404"></a>404</td><td></td><td></td><td></td><td></td><td class="s"> @dl_modules</td></tr>
<tr><td class="h"><a name="405"></a>405</td><td></td><td></td><td></td><td></td><td class="s"> @dl_shared_objects</td></tr>
<tr><td class="h"><a name="406"></a>406</td><td></td><td></td><td></td><td></td><td class="s"> Implemented in:</td></tr>
<tr><td class="h"><a name="407"></a>407</td><td></td><td></td><td></td><td></td><td class="s"> bootstrap($modulename) Perl</td></tr>
<tr><td class="h"><a name="408"></a>408</td><td></td><td></td><td></td><td></td><td class="s"> @filepaths = dl_findfile(@names) Perl</td></tr>
<tr><td class="h"><a name="409"></a>409</td><td></td><td></td><td></td><td></td><td class="s"> $flags = $modulename->dl_load_flags Perl</td></tr>
<tr><td class="h"><a name="410"></a>410</td><td></td><td></td><td></td><td></td><td class="s"> $symref = dl_find_symbol_anywhere($symbol) Perl</td></tr>
<tr><td class="h"><a name="411"></a>411</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="412"></a>412</td><td></td><td></td><td></td><td></td><td class="s"> $libref = dl_load_file($filename, $flags) C</td></tr>
<tr><td class="h"><a name="413"></a>413</td><td></td><td></td><td></td><td></td><td class="s"> $status = dl_unload_file($libref) C</td></tr>
<tr><td class="h"><a name="414"></a>414</td><td></td><td></td><td></td><td></td><td class="s"> $symref = dl_find_symbol($libref, $symbol) C</td></tr>
<tr><td class="h"><a name="415"></a>415</td><td></td><td></td><td></td><td></td><td class="s"> @symbols = dl_undef_symbols() C</td></tr>
<tr><td class="h"><a name="416"></a>416</td><td></td><td></td><td></td><td></td><td class="s"> dl_install_xsub($name, $symref [, $filename]) C</td></tr>
<tr><td class="h"><a name="417"></a>417</td><td></td><td></td><td></td><td></td><td class="s"> $message = dl_error C</td></tr>
<tr><td class="h"><a name="418"></a>418</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="419"></a>419</td><td></td><td></td><td></td><td></td><td class="s">=over 4</td></tr>
<tr><td class="h"><a name="420"></a>420</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="421"></a>421</td><td></td><td></td><td></td><td></td><td class="s">=item @dl_library_path</td></tr>
<tr><td class="h"><a name="422"></a>422</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="423"></a>423</td><td></td><td></td><td></td><td></td><td class="s">The standard/default list of directories in which dl_findfile() will</td></tr>
<tr><td class="h"><a name="424"></a>424</td><td></td><td></td><td></td><td></td><td class="s">search for libraries etc. Directories are searched in order:</td></tr>
<tr><td class="h"><a name="425"></a>425</td><td></td><td></td><td></td><td></td><td class="s">$dl_library_path[0], [1], ... etc</td></tr>
<tr><td class="h"><a name="426"></a>426</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="427"></a>427</td><td></td><td></td><td></td><td></td><td class="s">@dl_library_path is initialised to hold the list of 'normal' directories</td></tr>
<tr><td class="h"><a name="428"></a>428</td><td></td><td></td><td></td><td></td><td class="s">(F</usr/lib>, etc) determined by B<Configure> (C<$Config{'libpth'}>). This should</td></tr>
<tr><td class="h"><a name="429"></a>429</td><td></td><td></td><td></td><td></td><td class="s">ensure portability across a wide range of platforms.</td></tr>
<tr><td class="h"><a name="430"></a>430</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="431"></a>431</td><td></td><td></td><td></td><td></td><td class="s">@dl_library_path should also be initialised with any other directories</td></tr>
<tr><td class="h"><a name="432"></a>432</td><td></td><td></td><td></td><td></td><td class="s">that can be determined from the environment at runtime (such as</td></tr>
<tr><td class="h"><a name="433"></a>433</td><td></td><td></td><td></td><td></td><td class="s">LD_LIBRARY_PATH for SunOS).</td></tr>
<tr><td class="h"><a name="434"></a>434</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="435"></a>435</td><td></td><td></td><td></td><td></td><td class="s">After initialisation @dl_library_path can be manipulated by an</td></tr>
<tr><td class="h"><a name="436"></a>436</td><td></td><td></td><td></td><td></td><td class="s">application using push and unshift before calling dl_findfile().</td></tr>
<tr><td class="h"><a name="437"></a>437</td><td></td><td></td><td></td><td></td><td class="s">Unshift can be used to add directories to the front of the search order</td></tr>
<tr><td class="h"><a name="438"></a>438</td><td></td><td></td><td></td><td></td><td class="s">either to save search time or to override libraries with the same name</td></tr>
<tr><td class="h"><a name="439"></a>439</td><td></td><td></td><td></td><td></td><td class="s">in the 'normal' directories.</td></tr>
<tr><td class="h"><a name="440"></a>440</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="441"></a>441</td><td></td><td></td><td></td><td></td><td class="s">The load function that dl_load_file() calls may require an absolute</td></tr>
<tr><td class="h"><a name="442"></a>442</td><td></td><td></td><td></td><td></td><td class="s">pathname. The dl_findfile() function and @dl_library_path can be</td></tr>
<tr><td class="h"><a name="443"></a>443</td><td></td><td></td><td></td><td></td><td class="s">used to search for and return the absolute pathname for the</td></tr>
<tr><td class="h"><a name="444"></a>444</td><td></td><td></td><td></td><td></td><td class="s">library/object that you wish to load.</td></tr>
<tr><td class="h"><a name="445"></a>445</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="446"></a>446</td><td></td><td></td><td></td><td></td><td class="s">=item @dl_resolve_using</td></tr>
<tr><td class="h"><a name="447"></a>447</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="448"></a>448</td><td></td><td></td><td></td><td></td><td class="s">A list of additional libraries or other shared objects which can be</td></tr>
<tr><td class="h"><a name="449"></a>449</td><td></td><td></td><td></td><td></td><td class="s">used to resolve any undefined symbols that might be generated by a</td></tr>
<tr><td class="h"><a name="450"></a>450</td><td></td><td></td><td></td><td></td><td class="s">later call to load_file().</td></tr>
<tr><td class="h"><a name="451"></a>451</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="452"></a>452</td><td></td><td></td><td></td><td></td><td class="s">This is only required on some platforms which do not handle dependent</td></tr>
<tr><td class="h"><a name="453"></a>453</td><td></td><td></td><td></td><td></td><td class="s">libraries automatically. For example the Socket Perl extension</td></tr>
<tr><td class="h"><a name="454"></a>454</td><td></td><td></td><td></td><td></td><td class="s">library (F<auto/Socket/Socket.so>) contains references to many socket</td></tr>
<tr><td class="h"><a name="455"></a>455</td><td></td><td></td><td></td><td></td><td class="s">functions which need to be resolved when it's loaded. Most platforms</td></tr>
<tr><td class="h"><a name="456"></a>456</td><td></td><td></td><td></td><td></td><td class="s">will automatically know where to find the 'dependent' library (e.g.,</td></tr>
<tr><td class="h"><a name="457"></a>457</td><td></td><td></td><td></td><td></td><td class="s">F</usr/lib/libsocket.so>). A few platforms need to be told the</td></tr>
<tr><td class="h"><a name="458"></a>458</td><td></td><td></td><td></td><td></td><td class="s">location of the dependent library explicitly. Use @dl_resolve_using</td></tr>
<tr><td class="h"><a name="459"></a>459</td><td></td><td></td><td></td><td></td><td class="s">for this.</td></tr>
<tr><td class="h"><a name="460"></a>460</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="461"></a>461</td><td></td><td></td><td></td><td></td><td class="s">Example usage:</td></tr>
<tr><td class="h"><a name="462"></a>462</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="463"></a>463</td><td></td><td></td><td></td><td></td><td class="s"> @dl_resolve_using = dl_findfile('-lsocket');</td></tr>
<tr><td class="h"><a name="464"></a>464</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="465"></a>465</td><td></td><td></td><td></td><td></td><td class="s">=item @dl_require_symbols</td></tr>
<tr><td class="h"><a name="466"></a>466</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="467"></a>467</td><td></td><td></td><td></td><td></td><td class="s">A list of one or more symbol names that are in the library/object file</td></tr>
<tr><td class="h"><a name="468"></a>468</td><td></td><td></td><td></td><td></td><td class="s">to be dynamically loaded. This is only required on some platforms.</td></tr>
<tr><td class="h"><a name="469"></a>469</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="470"></a>470</td><td></td><td></td><td></td><td></td><td class="s">=item @dl_librefs</td></tr>
<tr><td class="h"><a name="471"></a>471</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="472"></a>472</td><td></td><td></td><td></td><td></td><td class="s">An array of the handles returned by successful calls to dl_load_file(),</td></tr>
<tr><td class="h"><a name="473"></a>473</td><td></td><td></td><td></td><td></td><td class="s">made by bootstrap, in the order in which they were loaded.</td></tr>
<tr><td class="h"><a name="474"></a>474</td><td></td><td></td><td></td><td></td><td class="s">Can be used with dl_find_symbol() to look for a symbol in any of</td></tr>
<tr><td class="h"><a name="475"></a>475</td><td></td><td></td><td></td><td></td><td class="s">the loaded files.</td></tr>
<tr><td class="h"><a name="476"></a>476</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="477"></a>477</td><td></td><td></td><td></td><td></td><td class="s">=item @dl_modules</td></tr>
<tr><td class="h"><a name="478"></a>478</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="479"></a>479</td><td></td><td></td><td></td><td></td><td class="s">An array of module (package) names that have been bootstrap'ed.</td></tr>
<tr><td class="h"><a name="480"></a>480</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="481"></a>481</td><td></td><td></td><td></td><td></td><td class="s">=item @dl_shared_objects</td></tr>
<tr><td class="h"><a name="482"></a>482</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="483"></a>483</td><td></td><td></td><td></td><td></td><td class="s">An array of file names for the shared objects that were loaded.</td></tr>
<tr><td class="h"><a name="484"></a>484</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="485"></a>485</td><td></td><td></td><td></td><td></td><td class="s">=item dl_error()</td></tr>
<tr><td class="h"><a name="486"></a>486</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="487"></a>487</td><td></td><td></td><td></td><td></td><td class="s">Syntax:</td></tr>
<tr><td class="h"><a name="488"></a>488</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="489"></a>489</td><td></td><td></td><td></td><td></td><td class="s"> $message = dl_error();</td></tr>
<tr><td class="h"><a name="490"></a>490</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="491"></a>491</td><td></td><td></td><td></td><td></td><td class="s">Error message text from the last failed DynaLoader function. Note</td></tr>
<tr><td class="h"><a name="492"></a>492</td><td></td><td></td><td></td><td></td><td class="s">that, similar to errno in unix, a successful function call does not</td></tr>
<tr><td class="h"><a name="493"></a>493</td><td></td><td></td><td></td><td></td><td class="s">reset this message.</td></tr>
<tr><td class="h"><a name="494"></a>494</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="495"></a>495</td><td></td><td></td><td></td><td></td><td class="s">Implementations should detect the error as soon as it occurs in any of</td></tr>
<tr><td class="h"><a name="496"></a>496</td><td></td><td></td><td></td><td></td><td class="s">the other functions and save the corresponding message for later</td></tr>
<tr><td class="h"><a name="497"></a>497</td><td></td><td></td><td></td><td></td><td class="s">retrieval. This will avoid problems on some platforms (such as SunOS)</td></tr>
<tr><td class="h"><a name="498"></a>498</td><td></td><td></td><td></td><td></td><td class="s">where the error message is very temporary (e.g., dlerror()).</td></tr>
<tr><td class="h"><a name="499"></a>499</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="500"></a>500</td><td></td><td></td><td></td><td></td><td class="s">=item $dl_debug</td></tr>
<tr><td class="h"><a name="501"></a>501</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="502"></a>502</td><td></td><td></td><td></td><td></td><td class="s">Internal debugging messages are enabled when $dl_debug is set true.</td></tr>
<tr><td class="h"><a name="503"></a>503</td><td></td><td></td><td></td><td></td><td class="s">Currently setting $dl_debug only affects the Perl side of the</td></tr>
<tr><td class="h"><a name="504"></a>504</td><td></td><td></td><td></td><td></td><td class="s">DynaLoader. These messages should help an application developer to</td></tr>
<tr><td class="h"><a name="505"></a>505</td><td></td><td></td><td></td><td></td><td class="s">resolve any DynaLoader usage problems.</td></tr>
<tr><td class="h"><a name="506"></a>506</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="507"></a>507</td><td></td><td></td><td></td><td></td><td class="s">$dl_debug is set to C<$ENV{'PERL_DL_DEBUG'}> if defined.</td></tr>
<tr><td class="h"><a name="508"></a>508</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="509"></a>509</td><td></td><td></td><td></td><td></td><td class="s">For the DynaLoader developer/porter there is a similar debugging</td></tr>
<tr><td class="h"><a name="510"></a>510</td><td></td><td></td><td></td><td></td><td class="s">variable added to the C code (see dlutils.c) and enabled if Perl was</td></tr>
<tr><td class="h"><a name="511"></a>511</td><td></td><td></td><td></td><td></td><td class="s">built with the B<-DDEBUGGING> flag. This can also be set via the</td></tr>
<tr><td class="h"><a name="512"></a>512</td><td></td><td></td><td></td><td></td><td class="s">PERL_DL_DEBUG environment variable. Set to 1 for minimal information or</td></tr>
<tr><td class="h"><a name="513"></a>513</td><td></td><td></td><td></td><td></td><td class="s">higher for more.</td></tr>
<tr><td class="h"><a name="514"></a>514</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="515"></a>515</td><td></td><td></td><td></td><td></td><td class="s">=item dl_findfile()</td></tr>
<tr><td class="h"><a name="516"></a>516</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="517"></a>517</td><td></td><td></td><td></td><td></td><td class="s">Syntax:</td></tr>
<tr><td class="h"><a name="518"></a>518</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="519"></a>519</td><td></td><td></td><td></td><td></td><td class="s"> @filepaths = dl_findfile(@names)</td></tr>
<tr><td class="h"><a name="520"></a>520</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="521"></a>521</td><td></td><td></td><td></td><td></td><td class="s">Determine the full paths (including file suffix) of one or more</td></tr>
<tr><td class="h"><a name="522"></a>522</td><td></td><td></td><td></td><td></td><td class="s">loadable files given their generic names and optionally one or more</td></tr>
<tr><td class="h"><a name="523"></a>523</td><td></td><td></td><td></td><td></td><td class="s">directories. Searches directories in @dl_library_path by default and</td></tr>
<tr><td class="h"><a name="524"></a>524</td><td></td><td></td><td></td><td></td><td class="s">returns an empty list if no files were found.</td></tr>
<tr><td class="h"><a name="525"></a>525</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="526"></a>526</td><td></td><td></td><td></td><td></td><td class="s">Names can be specified in a variety of platform independent forms. Any</td></tr>
<tr><td class="h"><a name="527"></a>527</td><td></td><td></td><td></td><td></td><td class="s">names in the form B<-lname> are converted into F<libname.*>, where F<.*> is</td></tr>
<tr><td class="h"><a name="528"></a>528</td><td></td><td></td><td></td><td></td><td class="s">an appropriate suffix for the platform.</td></tr>
<tr><td class="h"><a name="529"></a>529</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="530"></a>530</td><td></td><td></td><td></td><td></td><td class="s">If a name does not already have a suitable prefix and/or suffix then</td></tr>
<tr><td class="h"><a name="531"></a>531</td><td></td><td></td><td></td><td></td><td class="s">the corresponding file will be searched for by trying combinations of</td></tr>
<tr><td class="h"><a name="532"></a>532</td><td></td><td></td><td></td><td></td><td class="s">prefix and suffix appropriate to the platform: "$name.o", "lib$name.*"</td></tr>
<tr><td class="h"><a name="533"></a>533</td><td></td><td></td><td></td><td></td><td class="s">and "$name".</td></tr>
<tr><td class="h"><a name="534"></a>534</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="535"></a>535</td><td></td><td></td><td></td><td></td><td class="s">If any directories are included in @names they are searched before</td></tr>
<tr><td class="h"><a name="536"></a>536</td><td></td><td></td><td></td><td></td><td class="s">@dl_library_path. Directories may be specified as B<-Ldir>. Any other</td></tr>
<tr><td class="h"><a name="537"></a>537</td><td></td><td></td><td></td><td></td><td class="s">names are treated as filenames to be searched for.</td></tr>
<tr><td class="h"><a name="538"></a>538</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="539"></a>539</td><td></td><td></td><td></td><td></td><td class="s">Using arguments of the form C<-Ldir> and C<-lname> is recommended.</td></tr>
<tr><td class="h"><a name="540"></a>540</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="541"></a>541</td><td></td><td></td><td></td><td></td><td class="s">Example: </td></tr>
<tr><td class="h"><a name="542"></a>542</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="543"></a>543</td><td></td><td></td><td></td><td></td><td class="s"> @dl_resolve_using = dl_findfile(qw(-L/usr/5lib -lposix));</td></tr>
<tr><td class="h"><a name="544"></a>544</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="545"></a>545</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="546"></a>546</td><td></td><td></td><td></td><td></td><td class="s">=item dl_expandspec()</td></tr>
<tr><td class="h"><a name="547"></a>547</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="548"></a>548</td><td></td><td></td><td></td><td></td><td class="s">Syntax:</td></tr>
<tr><td class="h"><a name="549"></a>549</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="550"></a>550</td><td></td><td></td><td></td><td></td><td class="s"> $filepath = dl_expandspec($spec)</td></tr>
<tr><td class="h"><a name="551"></a>551</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="552"></a>552</td><td></td><td></td><td></td><td></td><td class="s">Some unusual systems, such as VMS, require special filename handling in</td></tr>
<tr><td class="h"><a name="553"></a>553</td><td></td><td></td><td></td><td></td><td class="s">order to deal with symbolic names for files (i.e., VMS's Logical Names).</td></tr>
<tr><td class="h"><a name="554"></a>554</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="555"></a>555</td><td></td><td></td><td></td><td></td><td class="s">To support these systems a dl_expandspec() function can be implemented</td></tr>
<tr><td class="h"><a name="556"></a>556</td><td></td><td></td><td></td><td></td><td class="s">either in the F<dl_*.xs> file or code can be added to the autoloadable</td></tr>
<tr><td class="h"><a name="557"></a>557</td><td></td><td></td><td></td><td></td><td class="s">dl_expandspec() function in F<DynaLoader.pm>. See F<DynaLoader.pm> for</td></tr>
<tr><td class="h"><a name="558"></a>558</td><td></td><td></td><td></td><td></td><td class="s">more information.</td></tr>
<tr><td class="h"><a name="559"></a>559</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="560"></a>560</td><td></td><td></td><td></td><td></td><td class="s">=item dl_load_file()</td></tr>
<tr><td class="h"><a name="561"></a>561</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="562"></a>562</td><td></td><td></td><td></td><td></td><td class="s">Syntax:</td></tr>
<tr><td class="h"><a name="563"></a>563</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="564"></a>564</td><td></td><td></td><td></td><td></td><td class="s"> $libref = dl_load_file($filename, $flags)</td></tr>
<tr><td class="h"><a name="565"></a>565</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="566"></a>566</td><td></td><td></td><td></td><td></td><td class="s">Dynamically load $filename, which must be the path to a shared object</td></tr>
<tr><td class="h"><a name="567"></a>567</td><td></td><td></td><td></td><td></td><td class="s">or library. An opaque 'library reference' is returned as a handle for</td></tr>
<tr><td class="h"><a name="568"></a>568</td><td></td><td></td><td></td><td></td><td class="s">the loaded object. Returns undef on error.</td></tr>
<tr><td class="h"><a name="569"></a>569</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="570"></a>570</td><td></td><td></td><td></td><td></td><td class="s">The $flags argument to alters dl_load_file behaviour. </td></tr>
<tr><td class="h"><a name="571"></a>571</td><td></td><td></td><td></td><td></td><td class="s">Assigned bits:</td></tr>
<tr><td class="h"><a name="572"></a>572</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="573"></a>573</td><td></td><td></td><td></td><td></td><td class="s"> 0x01 make symbols available for linking later dl_load_file's.</td></tr>
<tr><td class="h"><a name="574"></a>574</td><td></td><td></td><td></td><td></td><td class="s"> (only known to work on Solaris 2 using dlopen(RTLD_GLOBAL))</td></tr>
<tr><td class="h"><a name="575"></a>575</td><td></td><td></td><td></td><td></td><td class="s"> (ignored under VMS; this is a normal part of image linking)</td></tr>
<tr><td class="h"><a name="576"></a>576</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="577"></a>577</td><td></td><td></td><td></td><td></td><td class="s">(On systems that provide a handle for the loaded object such as SunOS</td></tr>
<tr><td class="h"><a name="578"></a>578</td><td></td><td></td><td></td><td></td><td class="s">and HPUX, $libref will be that handle. On other systems $libref will</td></tr>
<tr><td class="h"><a name="579"></a>579</td><td></td><td></td><td></td><td></td><td class="s">typically be $filename or a pointer to a buffer containing $filename.</td></tr>
<tr><td class="h"><a name="580"></a>580</td><td></td><td></td><td></td><td></td><td class="s">The application should not examine or alter $libref in any way.)</td></tr>
<tr><td class="h"><a name="581"></a>581</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="582"></a>582</td><td></td><td></td><td></td><td></td><td class="s">This is the function that does the real work. It should use the</td></tr>
<tr><td class="h"><a name="583"></a>583</td><td></td><td></td><td></td><td></td><td class="s">current values of @dl_require_symbols and @dl_resolve_using if required.</td></tr>
<tr><td class="h"><a name="584"></a>584</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="585"></a>585</td><td></td><td></td><td></td><td></td><td class="s"> SunOS: dlopen($filename)</td></tr>
<tr><td class="h"><a name="586"></a>586</td><td></td><td></td><td></td><td></td><td class="s"> HP-UX: shl_load($filename)</td></tr>
<tr><td class="h"><a name="587"></a>587</td><td></td><td></td><td></td><td></td><td class="s"> Linux: dld_create_reference(@dl_require_symbols); dld_link($filename)</td></tr>
<tr><td class="h"><a name="588"></a>588</td><td></td><td></td><td></td><td></td><td class="s"> NeXT: rld_load($filename, @dl_resolve_using)</td></tr>
<tr><td class="h"><a name="589"></a>589</td><td></td><td></td><td></td><td></td><td class="s"> VMS: lib$find_image_symbol($filename,$dl_require_symbols[0])</td></tr>
<tr><td class="h"><a name="590"></a>590</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="591"></a>591</td><td></td><td></td><td></td><td></td><td class="s">(The dlopen() function is also used by Solaris and some versions of</td></tr>
<tr><td class="h"><a name="592"></a>592</td><td></td><td></td><td></td><td></td><td class="s">Linux, and is a common choice when providing a "wrapper" on other</td></tr>
<tr><td class="h"><a name="593"></a>593</td><td></td><td></td><td></td><td></td><td class="s">mechanisms as is done in the OS/2 port.)</td></tr>
<tr><td class="h"><a name="594"></a>594</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="595"></a>595</td><td></td><td></td><td></td><td></td><td class="s">=item dl_unload_file()</td></tr>
<tr><td class="h"><a name="596"></a>596</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="597"></a>597</td><td></td><td></td><td></td><td></td><td class="s">Syntax:</td></tr>
<tr><td class="h"><a name="598"></a>598</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="599"></a>599</td><td></td><td></td><td></td><td></td><td class="s"> $status = dl_unload_file($libref)</td></tr>
<tr><td class="h"><a name="600"></a>600</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="601"></a>601</td><td></td><td></td><td></td><td></td><td class="s">Dynamically unload $libref, which must be an opaque 'library reference' as</td></tr>
<tr><td class="h"><a name="602"></a>602</td><td></td><td></td><td></td><td></td><td class="s">returned from dl_load_file. Returns one on success and zero on failure.</td></tr>
<tr><td class="h"><a name="603"></a>603</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="604"></a>604</td><td></td><td></td><td></td><td></td><td class="s">This function is optional and may not necessarily be provided on all platforms.</td></tr>
<tr><td class="h"><a name="605"></a>605</td><td></td><td></td><td></td><td></td><td class="s">If it is defined, it is called automatically when the interpreter exits for</td></tr>
<tr><td class="h"><a name="606"></a>606</td><td></td><td></td><td></td><td></td><td class="s">every shared object or library loaded by DynaLoader::bootstrap. All such</td></tr>
<tr><td class="h"><a name="607"></a>607</td><td></td><td></td><td></td><td></td><td class="s">library references are stored in @dl_librefs by DynaLoader::Bootstrap as it</td></tr>
<tr><td class="h"><a name="608"></a>608</td><td></td><td></td><td></td><td></td><td class="s">loads the libraries. The files are unloaded in last-in, first-out order.</td></tr>
<tr><td class="h"><a name="609"></a>609</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="610"></a>610</td><td></td><td></td><td></td><td></td><td class="s">This unloading is usually necessary when embedding a shared-object perl (e.g.</td></tr>
<tr><td class="h"><a name="611"></a>611</td><td></td><td></td><td></td><td></td><td class="s">one configured with -Duseshrplib) within a larger application, and the perl</td></tr>
<tr><td class="h"><a name="612"></a>612</td><td></td><td></td><td></td><td></td><td class="s">interpreter is created and destroyed several times within the lifetime of the</td></tr>
<tr><td class="h"><a name="613"></a>613</td><td></td><td></td><td></td><td></td><td class="s">application. In this case it is possible that the system dynamic linker will</td></tr>
<tr><td class="h"><a name="614"></a>614</td><td></td><td></td><td></td><td></td><td class="s">unload and then subsequently reload the shared libperl without relocating any</td></tr>
<tr><td class="h"><a name="615"></a>615</td><td></td><td></td><td></td><td></td><td class="s">references to it from any files DynaLoaded by the previous incarnation of the</td></tr>
<tr><td class="h"><a name="616"></a>616</td><td></td><td></td><td></td><td></td><td class="s">interpreter. As a result, any shared objects opened by DynaLoader may point to</td></tr>
<tr><td class="h"><a name="617"></a>617</td><td></td><td></td><td></td><td></td><td class="s">a now invalid 'ghost' of the libperl shared object, causing apparently random</td></tr>
<tr><td class="h"><a name="618"></a>618</td><td></td><td></td><td></td><td></td><td class="s">memory corruption and crashes. This behaviour is most commonly seen when using</td></tr>
<tr><td class="h"><a name="619"></a>619</td><td></td><td></td><td></td><td></td><td class="s">Apache and mod_perl built with the APXS mechanism.</td></tr>
<tr><td class="h"><a name="620"></a>620</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="621"></a>621</td><td></td><td></td><td></td><td></td><td class="s"> SunOS: dlclose($libref)</td></tr>
<tr><td class="h"><a name="622"></a>622</td><td></td><td></td><td></td><td></td><td class="s"> HP-UX: ???</td></tr>
<tr><td class="h"><a name="623"></a>623</td><td></td><td></td><td></td><td></td><td class="s"> Linux: ???</td></tr>
<tr><td class="h"><a name="624"></a>624</td><td></td><td></td><td></td><td></td><td class="s"> NeXT: ???</td></tr>
<tr><td class="h"><a name="625"></a>625</td><td></td><td></td><td></td><td></td><td class="s"> VMS: ???</td></tr>
<tr><td class="h"><a name="626"></a>626</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="627"></a>627</td><td></td><td></td><td></td><td></td><td class="s">(The dlclose() function is also used by Solaris and some versions of</td></tr>
<tr><td class="h"><a name="628"></a>628</td><td></td><td></td><td></td><td></td><td class="s">Linux, and is a common choice when providing a "wrapper" on other</td></tr>
<tr><td class="h"><a name="629"></a>629</td><td></td><td></td><td></td><td></td><td class="s">mechanisms as is done in the OS/2 port.)</td></tr>
<tr><td class="h"><a name="630"></a>630</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="631"></a>631</td><td></td><td></td><td></td><td></td><td class="s">=item dl_load_flags()</td></tr>
<tr><td class="h"><a name="632"></a>632</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="633"></a>633</td><td></td><td></td><td></td><td></td><td class="s">Syntax:</td></tr>
<tr><td class="h"><a name="634"></a>634</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="635"></a>635</td><td></td><td></td><td></td><td></td><td class="s"> $flags = dl_load_flags $modulename;</td></tr>
<tr><td class="h"><a name="636"></a>636</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="637"></a>637</td><td></td><td></td><td></td><td></td><td class="s">Designed to be a method call, and to be overridden by a derived class</td></tr>
<tr><td class="h"><a name="638"></a>638</td><td></td><td></td><td></td><td></td><td class="s">(i.e. a class which has DynaLoader in its @ISA). The definition in</td></tr>
<tr><td class="h"><a name="639"></a>639</td><td></td><td></td><td></td><td></td><td class="s">DynaLoader itself returns 0, which produces standard behavior from</td></tr>
<tr><td class="h"><a name="640"></a>640</td><td></td><td></td><td></td><td></td><td class="s">dl_load_file().</td></tr>
<tr><td class="h"><a name="641"></a>641</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="642"></a>642</td><td></td><td></td><td></td><td></td><td class="s">=item dl_find_symbol()</td></tr>
<tr><td class="h"><a name="643"></a>643</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="644"></a>644</td><td></td><td></td><td></td><td></td><td class="s">Syntax:</td></tr>
<tr><td class="h"><a name="645"></a>645</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="646"></a>646</td><td></td><td></td><td></td><td></td><td class="s"> $symref = dl_find_symbol($libref, $symbol)</td></tr>
<tr><td class="h"><a name="647"></a>647</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="648"></a>648</td><td></td><td></td><td></td><td></td><td class="s">Return the address of the symbol $symbol or C<undef> if not found. If the</td></tr>
<tr><td class="h"><a name="649"></a>649</td><td></td><td></td><td></td><td></td><td class="s">target system has separate functions to search for symbols of different</td></tr>
<tr><td class="h"><a name="650"></a>650</td><td></td><td></td><td></td><td></td><td class="s">types then dl_find_symbol() should search for function symbols first and</td></tr>
<tr><td class="h"><a name="651"></a>651</td><td></td><td></td><td></td><td></td><td class="s">then other types.</td></tr>
<tr><td class="h"><a name="652"></a>652</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="653"></a>653</td><td></td><td></td><td></td><td></td><td class="s">The exact manner in which the address is returned in $symref is not</td></tr>
<tr><td class="h"><a name="654"></a>654</td><td></td><td></td><td></td><td></td><td class="s">currently defined. The only initial requirement is that $symref can</td></tr>
<tr><td class="h"><a name="655"></a>655</td><td></td><td></td><td></td><td></td><td class="s">be passed to, and understood by, dl_install_xsub().</td></tr>
<tr><td class="h"><a name="656"></a>656</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="657"></a>657</td><td></td><td></td><td></td><td></td><td class="s"> SunOS: dlsym($libref, $symbol)</td></tr>
<tr><td class="h"><a name="658"></a>658</td><td></td><td></td><td></td><td></td><td class="s"> HP-UX: shl_findsym($libref, $symbol)</td></tr>
<tr><td class="h"><a name="659"></a>659</td><td></td><td></td><td></td><td></td><td class="s"> Linux: dld_get_func($symbol) and/or dld_get_symbol($symbol)</td></tr>
<tr><td class="h"><a name="660"></a>660</td><td></td><td></td><td></td><td></td><td class="s"> NeXT: rld_lookup("_$symbol")</td></tr>
<tr><td class="h"><a name="661"></a>661</td><td></td><td></td><td></td><td></td><td class="s"> VMS: lib$find_image_symbol($libref,$symbol)</td></tr>
<tr><td class="h"><a name="662"></a>662</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="663"></a>663</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="664"></a>664</td><td></td><td></td><td></td><td></td><td class="s">=item dl_find_symbol_anywhere()</td></tr>
<tr><td class="h"><a name="665"></a>665</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="666"></a>666</td><td></td><td></td><td></td><td></td><td class="s">Syntax:</td></tr>
<tr><td class="h"><a name="667"></a>667</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="668"></a>668</td><td></td><td></td><td></td><td></td><td class="s"> $symref = dl_find_symbol_anywhere($symbol)</td></tr>
<tr><td class="h"><a name="669"></a>669</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="670"></a>670</td><td></td><td></td><td></td><td></td><td class="s">Applies dl_find_symbol() to the members of @dl_librefs and returns</td></tr>
<tr><td class="h"><a name="671"></a>671</td><td></td><td></td><td></td><td></td><td class="s">the first match found.</td></tr>
<tr><td class="h"><a name="672"></a>672</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="673"></a>673</td><td></td><td></td><td></td><td></td><td class="s">=item dl_undef_symbols()</td></tr>
<tr><td class="h"><a name="674"></a>674</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="675"></a>675</td><td></td><td></td><td></td><td></td><td class="s">Example</td></tr>
<tr><td class="h"><a name="676"></a>676</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="677"></a>677</td><td></td><td></td><td></td><td></td><td class="s"> @symbols = dl_undef_symbols()</td></tr>
<tr><td class="h"><a name="678"></a>678</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="679"></a>679</td><td></td><td></td><td></td><td></td><td class="s">Return a list of symbol names which remain undefined after load_file().</td></tr>
<tr><td class="h"><a name="680"></a>680</td><td></td><td></td><td></td><td></td><td class="s">Returns C<()> if not known. Don't worry if your platform does not provide</td></tr>
<tr><td class="h"><a name="681"></a>681</td><td></td><td></td><td></td><td></td><td class="s">a mechanism for this. Most do not need it and hence do not provide it,</td></tr>
<tr><td class="h"><a name="682"></a>682</td><td></td><td></td><td></td><td></td><td class="s">they just return an empty list.</td></tr>
<tr><td class="h"><a name="683"></a>683</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="684"></a>684</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="685"></a>685</td><td></td><td></td><td></td><td></td><td class="s">=item dl_install_xsub()</td></tr>
<tr><td class="h"><a name="686"></a>686</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="687"></a>687</td><td></td><td></td><td></td><td></td><td class="s">Syntax:</td></tr>
<tr><td class="h"><a name="688"></a>688</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="689"></a>689</td><td></td><td></td><td></td><td></td><td class="s"> dl_install_xsub($perl_name, $symref [, $filename])</td></tr>
<tr><td class="h"><a name="690"></a>690</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="691"></a>691</td><td></td><td></td><td></td><td></td><td class="s">Create a new Perl external subroutine named $perl_name using $symref as</td></tr>
<tr><td class="h"><a name="692"></a>692</td><td></td><td></td><td></td><td></td><td class="s">a pointer to the function which implements the routine. This is simply</td></tr>
<tr><td class="h"><a name="693"></a>693</td><td></td><td></td><td></td><td></td><td class="s">a direct call to newXSUB(). Returns a reference to the installed</td></tr>
<tr><td class="h"><a name="694"></a>694</td><td></td><td></td><td></td><td></td><td class="s">function.</td></tr>
<tr><td class="h"><a name="695"></a>695</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="696"></a>696</td><td></td><td></td><td></td><td></td><td class="s">The $filename parameter is used by Perl to identify the source file for</td></tr>
<tr><td class="h"><a name="697"></a>697</td><td></td><td></td><td></td><td></td><td class="s">the function if required by die(), caller() or the debugger. If</td></tr>
<tr><td class="h"><a name="698"></a>698</td><td></td><td></td><td></td><td></td><td class="s">$filename is not defined then "DynaLoader" will be used.</td></tr>
<tr><td class="h"><a name="699"></a>699</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="700"></a>700</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="701"></a>701</td><td></td><td></td><td></td><td></td><td class="s">=item bootstrap()</td></tr>
<tr><td class="h"><a name="702"></a>702</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="703"></a>703</td><td></td><td></td><td></td><td></td><td class="s">Syntax:</td></tr>
<tr><td class="h"><a name="704"></a>704</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="705"></a>705</td><td></td><td></td><td></td><td></td><td class="s">bootstrap($module)</td></tr>
<tr><td class="h"><a name="706"></a>706</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="707"></a>707</td><td></td><td></td><td></td><td></td><td class="s">This is the normal entry point for automatic dynamic loading in Perl.</td></tr>
<tr><td class="h"><a name="708"></a>708</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="709"></a>709</td><td></td><td></td><td></td><td></td><td class="s">It performs the following actions:</td></tr>
<tr><td class="h"><a name="710"></a>710</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="711"></a>711</td><td></td><td></td><td></td><td></td><td class="s">=over 8</td></tr>
<tr><td class="h"><a name="712"></a>712</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="713"></a>713</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
<tr><td class="h"><a name="714"></a>714</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="715"></a>715</td><td></td><td></td><td></td><td></td><td class="s">locates an auto/$module directory by searching @INC</td></tr>
<tr><td class="h"><a name="716"></a>716</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="717"></a>717</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
<tr><td class="h"><a name="718"></a>718</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="719"></a>719</td><td></td><td></td><td></td><td></td><td class="s">uses dl_findfile() to determine the filename to load</td></tr>
<tr><td class="h"><a name="720"></a>720</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="721"></a>721</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
<tr><td class="h"><a name="722"></a>722</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="723"></a>723</td><td></td><td></td><td></td><td></td><td class="s">sets @dl_require_symbols to C<("boot_$module")></td></tr>
<tr><td class="h"><a name="724"></a>724</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="725"></a>725</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
<tr><td class="h"><a name="726"></a>726</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="727"></a>727</td><td></td><td></td><td></td><td></td><td class="s">executes an F<auto/$module/$module.bs> file if it exists</td></tr>
<tr><td class="h"><a name="728"></a>728</td><td></td><td></td><td></td><td></td><td class="s">(typically used to add to @dl_resolve_using any files which</td></tr>
<tr><td class="h"><a name="729"></a>729</td><td></td><td></td><td></td><td></td><td class="s">are required to load the module on the current platform)</td></tr>
<tr><td class="h"><a name="730"></a>730</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="731"></a>731</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
<tr><td class="h"><a name="732"></a>732</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="733"></a>733</td><td></td><td></td><td></td><td></td><td class="s">calls dl_load_flags() to determine how to load the file.</td></tr>
<tr><td class="h"><a name="734"></a>734</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="735"></a>735</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
<tr><td class="h"><a name="736"></a>736</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="737"></a>737</td><td></td><td></td><td></td><td></td><td class="s">calls dl_load_file() to load the file</td></tr>
<tr><td class="h"><a name="738"></a>738</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="739"></a>739</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
<tr><td class="h"><a name="740"></a>740</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="741"></a>741</td><td></td><td></td><td></td><td></td><td class="s">calls dl_undef_symbols() and warns if any symbols are undefined</td></tr>
<tr><td class="h"><a name="742"></a>742</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="743"></a>743</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
<tr><td class="h"><a name="744"></a>744</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="745"></a>745</td><td></td><td></td><td></td><td></td><td class="s">calls dl_find_symbol() for "boot_$module"</td></tr>
<tr><td class="h"><a name="746"></a>746</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="747"></a>747</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
<tr><td class="h"><a name="748"></a>748</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="749"></a>749</td><td></td><td></td><td></td><td></td><td class="s">calls dl_install_xsub() to install it as "${module}::bootstrap"</td></tr>
<tr><td class="h"><a name="750"></a>750</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="751"></a>751</td><td></td><td></td><td></td><td></td><td class="s">=item *</td></tr>
<tr><td class="h"><a name="752"></a>752</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="753"></a>753</td><td></td><td></td><td></td><td></td><td class="s">calls &{"${module}::bootstrap"} to bootstrap the module (actually</td></tr>
<tr><td class="h"><a name="754"></a>754</td><td></td><td></td><td></td><td></td><td class="s">it uses the function reference returned by dl_install_xsub for speed)</td></tr>
<tr><td class="h"><a name="755"></a>755</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="756"></a>756</td><td></td><td></td><td></td><td></td><td class="s">=back</td></tr>
<tr><td class="h"><a name="757"></a>757</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="758"></a>758</td><td></td><td></td><td></td><td></td><td class="s">=back</td></tr>
<tr><td class="h"><a name="759"></a>759</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="760"></a>760</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="761"></a>761</td><td></td><td></td><td></td><td></td><td class="s">=head1 AUTHOR</td></tr>
<tr><td class="h"><a name="762"></a>762</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="763"></a>763</td><td></td><td></td><td></td><td></td><td class="s">Tim Bunce, 11 August 1994.</td></tr>
<tr><td class="h"><a name="764"></a>764</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="765"></a>765</td><td></td><td></td><td></td><td></td><td class="s">This interface is based on the work and comments of (in no particular</td></tr>
<tr><td class="h"><a name="766"></a>766</td><td></td><td></td><td></td><td></td><td class="s">order): Larry Wall, Robert Sanders, Dean Roehrich, Jeff Okamoto, Anno</td></tr>
<tr><td class="h"><a name="767"></a>767</td><td></td><td></td><td></td><td></td><td class="s">Siegel, Thomas Neumann, Paul Marquess, Charles Bailey, myself and others.</td></tr>
<tr><td class="h"><a name="768"></a>768</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="769"></a>769</td><td></td><td></td><td></td><td></td><td class="s">Larry Wall designed the elegant inherited bootstrap mechanism and</td></tr>
<tr><td class="h"><a name="770"></a>770</td><td></td><td></td><td></td><td></td><td class="s">implemented the first Perl 5 dynamic loader using it.</td></tr>
<tr><td class="h"><a name="771"></a>771</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="772"></a>772</td><td></td><td></td><td></td><td></td><td class="s">Solaris global loading added by Nick Ing-Simmons with design/coding</td></tr>
<tr><td class="h"><a name="773"></a>773</td><td></td><td></td><td></td><td></td><td class="s">assistance from Tim Bunce, January 1996.</td></tr>
<tr><td class="h"><a name="774"></a>774</td><td></td><td></td><td></td><td></td><td class="s"></td></tr>
<tr><td class="h"><a name="775"></a>775</td><td></td><td></td><td></td><td></td><td class="s">=cut</td></tr>
<tr><td class="h"><a name="DynaLoader__CORE_ftdir"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 139µs within DynaLoader::CORE:ftdir which was called 26 times, avg 5µs/call:
# 26 times (139µs+0s) by DynaLoader::bootstrap at <a href="DynaLoader-pm-sub.html#158">line 158 of DynaLoader.pm</a>, avg 5µs/call</div></div>sub DynaLoader::CORE:ftdir; # xsub<br /> </td></tr>
<tr><td class="h"><a name="DynaLoader__CORE_ftfile"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 90µs within DynaLoader::CORE:ftfile which was called 8 times, avg 11µs/call:
# 8 times (90µs+0s) by DynaLoader::bootstrap at <a href="DynaLoader-pm-sub.html#162">line 162 of DynaLoader.pm</a>, avg 11µs/call</div></div>sub DynaLoader::CORE:ftfile; # xsub<br /> </td></tr>
<tr><td class="h"><a name="DynaLoader__CORE_ftsize"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 54µs within DynaLoader::CORE:ftsize which was called 8 times, avg 7µs/call:
# 8 times (54µs+0s) by DynaLoader::bootstrap at <a href="DynaLoader-pm-sub.html#183">line 183 of DynaLoader.pm</a>, avg 7µs/call</div></div>sub DynaLoader::CORE:ftsize; # xsub<br /> </td></tr>
<tr><td class="h"><a name="DynaLoader__CORE_subst"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 309µs within DynaLoader::CORE:subst which was called 16 times, avg 19µs/call:
# 8 times (282µs+0s) by DynaLoader::bootstrap at <a href="DynaLoader-pm-sub.html#182">line 182 of DynaLoader.pm</a>, avg 35µs/call
# 8 times (27µs+0s) by DynaLoader::bootstrap at <a href="DynaLoader-pm-sub.html#175">line 175 of DynaLoader.pm</a>, avg 3µs/call</div></div>sub DynaLoader::CORE:subst; # xsub<br /> </td></tr>
<tr><td class="h"><a name="DynaLoader__dl_find_symbol"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 83µs within DynaLoader::dl_find_symbol which was called 16 times, avg 5µs/call:
# 8 times (62µs+0s) by DynaLoader::bootstrap at <a href="DynaLoader-pm-sub.html#192">line 192 of DynaLoader.pm</a>, avg 8µs/call
# 8 times (21µs+0s) by DynaLoader::bootstrap at <a href="DynaLoader-pm-sub.html#215">line 215 of DynaLoader.pm</a>, avg 3µs/call</div></div>sub DynaLoader::dl_find_symbol; # xsub<br /> </td></tr>
<tr><td class="h"><a name="DynaLoader__dl_install_xsub"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 56µs within DynaLoader::dl_install_xsub which was called 8 times, avg 7µs/call:
# 8 times (56µs+0s) by DynaLoader::bootstrap at <a href="DynaLoader-pm-sub.html#220">line 220 of DynaLoader.pm</a>, avg 7µs/call</div></div>sub DynaLoader::dl_install_xsub; # xsub<br /> </td></tr>
<tr><td class="h"><a name="DynaLoader__dl_load_file"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 20.3ms within DynaLoader::dl_load_file which was called 8 times, avg 2.53ms/call:
# 8 times (20.3ms+0s) by DynaLoader::bootstrap at <a href="DynaLoader-pm-sub.html#204">line 204 of DynaLoader.pm</a>, avg 2.53ms/call</div></div>sub DynaLoader::dl_load_file; # xsub<br /> </td></tr>
<tr><td class="h"><a name="DynaLoader__dl_undef_symbols"></a></td><td></td><td></td><td></td><td></td><td class="s"><div class="calls"><div class="calls_in"># spent 17µs within DynaLoader::dl_undef_symbols which was called 8 times, avg 2µs/call:
# 8 times (17µs+0s) by DynaLoader::bootstrap at <a href="DynaLoader-pm-sub.html#209">line 209 of DynaLoader.pm</a>, avg 2µs/call</div></div>sub DynaLoader::dl_undef_symbols; # xsub<br /> </td></tr>
</tbody></table></div>
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