134 lines
4.4 KiB
C
134 lines
4.4 KiB
C
/***************************************************************************************************
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Zyan Core Library (Zycore-C)
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Original Author : Florian Bernd
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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***************************************************************************************************/
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#include <Zycore/Allocator.h>
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#include <Zycore/LibC.h>
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/* ============================================================================================== */
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/* Internal functions */
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/* ============================================================================================== */
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/* ---------------------------------------------------------------------------------------------- */
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/* Default allocator */
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/* ---------------------------------------------------------------------------------------------- */
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#ifndef ZYAN_NO_LIBC
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static ZyanStatus ZyanAllocatorDefaultAllocate(ZyanAllocator* allocator, void** p,
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ZyanUSize element_size, ZyanUSize n)
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{
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ZYAN_ASSERT(allocator);
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ZYAN_ASSERT(p);
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ZYAN_ASSERT(element_size);
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ZYAN_ASSERT(n);
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ZYAN_UNUSED(allocator);
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*p = ZYAN_MALLOC(element_size * n);
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if (!*p)
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{
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return ZYAN_STATUS_NOT_ENOUGH_MEMORY;
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}
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return ZYAN_STATUS_SUCCESS;
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}
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static ZyanStatus ZyanAllocatorDefaultReallocate(ZyanAllocator* allocator, void** p,
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ZyanUSize element_size, ZyanUSize n)
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{
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ZYAN_ASSERT(allocator);
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ZYAN_ASSERT(p);
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ZYAN_ASSERT(element_size);
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ZYAN_ASSERT(n);
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ZYAN_UNUSED(allocator);
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void* const x = ZYAN_REALLOC(*p, element_size * n);
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if (!x)
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{
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return ZYAN_STATUS_NOT_ENOUGH_MEMORY;
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}
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*p = x;
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return ZYAN_STATUS_SUCCESS;
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}
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static ZyanStatus ZyanAllocatorDefaultDeallocate(ZyanAllocator* allocator, void* p,
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ZyanUSize element_size, ZyanUSize n)
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{
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ZYAN_ASSERT(allocator);
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ZYAN_ASSERT(p);
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ZYAN_ASSERT(element_size);
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ZYAN_ASSERT(n);
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ZYAN_UNUSED(allocator);
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ZYAN_UNUSED(element_size);
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ZYAN_UNUSED(n);
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ZYAN_FREE(p);
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return ZYAN_STATUS_SUCCESS;
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}
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#endif // ZYAN_NO_LIBC
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/* ---------------------------------------------------------------------------------------------- */
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/* ============================================================================================== */
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/* Exported functions */
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/* ============================================================================================== */
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ZyanStatus ZyanAllocatorInit(ZyanAllocator* allocator, ZyanAllocatorAllocate allocate,
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ZyanAllocatorAllocate reallocate, ZyanAllocatorDeallocate deallocate)
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{
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if (!allocator || !allocate || !reallocate || !deallocate)
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{
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return ZYAN_STATUS_INVALID_ARGUMENT;
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}
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allocator->allocate = allocate;
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allocator->reallocate = reallocate;
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allocator->deallocate = deallocate;
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return ZYAN_STATUS_SUCCESS;
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}
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#ifndef ZYAN_NO_LIBC
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ZyanAllocator* ZyanAllocatorDefault(void)
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{
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static ZyanAllocator allocator =
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{
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&ZyanAllocatorDefaultAllocate,
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&ZyanAllocatorDefaultReallocate,
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&ZyanAllocatorDefaultDeallocate
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};
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return &allocator;
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}
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#endif
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/* ============================================================================================== */
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