/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Libmemcached library
*
* Copyright (C) 2011 Data Differential, http://datadifferential.com/
* Copyright (C) 2006-2009 Brian Aker All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* * The names of its contributors may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <libmemcached/common.h>
void _libmemcached_free(const memcached_st*, void *mem, void*)
{
if (mem)
{
std::free(mem);
}
}
void *_libmemcached_malloc(const memcached_st *, size_t size, void *)
{
return std::malloc(size);
}
void *_libmemcached_realloc(const memcached_st*, void *mem, size_t size, void *)
{
return std::realloc(mem, size);
}
void *_libmemcached_calloc(const memcached_st *self, size_t nelem, size_t size, void *context)
{
if (self->allocators.malloc != _libmemcached_malloc)
{
void *ret= _libmemcached_malloc(self, nelem * size, context);
if (ret)
{
memset(ret, 0, nelem * size);
}
return ret;
}
return std::calloc(nelem, size);
}
struct memcached_allocator_t memcached_allocators_return_default(void)
{
static struct memcached_allocator_t global_default_allocator= { _libmemcached_calloc, _libmemcached_free, _libmemcached_malloc, _libmemcached_realloc, 0 };
return global_default_allocator;
}
memcached_return_t memcached_set_memory_allocators(memcached_st *shell,
memcached_malloc_fn mem_malloc,
memcached_free_fn mem_free,
memcached_realloc_fn mem_realloc,
memcached_calloc_fn mem_calloc,
void *context)
{
Memcached* self= memcached2Memcached(shell);
if (self == NULL)
{
return MEMCACHED_INVALID_ARGUMENTS;
}
/* All should be set, or none should be set */
if (mem_malloc == NULL and mem_free == NULL and mem_realloc == NULL and mem_calloc == NULL)
{
self->allocators= memcached_allocators_return_default();
}
else if (mem_malloc == NULL or mem_free == NULL or mem_realloc == NULL or mem_calloc == NULL)
{
return memcached_set_error(*self, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT, memcached_literal_param("NULL parameter provided for one or more allocators"));
}
else
{
self->allocators.malloc= mem_malloc;
self->allocators.free= mem_free;
self->allocators.realloc= mem_realloc;
self->allocators.calloc= mem_calloc;
self->allocators.context= context;
}
return MEMCACHED_SUCCESS;
}
void *memcached_get_memory_allocators_context(const memcached_st *shell)
{
const Memcached* self= memcached2Memcached(shell);
if (self)
{
return self->allocators.context;
}
return NULL;
}
void memcached_get_memory_allocators(const memcached_st *shell,
memcached_malloc_fn *mem_malloc,
memcached_free_fn *mem_free,
memcached_realloc_fn *mem_realloc,
memcached_calloc_fn *mem_calloc)
{
const Memcached* self= memcached2Memcached(shell);
if (self)
{
if (mem_malloc)
{
*mem_malloc= self->allocators.malloc;
}
if (mem_free)
{
*mem_free= self->allocators.free;
}
if (mem_realloc)
{
*mem_realloc= self->allocators.realloc;
}
if (mem_calloc)
{
*mem_calloc= self->allocators.calloc;
}
}
}