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Introduce zstd into cosmopolitan (#843)

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Farid Zakaria 2023-07-01 20:30:38 -07:00 • committed by GitHub
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commit 5f1e129222
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56
third_party/zstd/lib/common/allocations.h vendored Normal file
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// clang-format off
/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
/* This file provides custom allocation primitives
*/
#define ZSTD_DEPS_NEED_MALLOC
#include "third_party/zstd/lib/common/zstd_deps.h" /* ZSTD_malloc, ZSTD_calloc, ZSTD_free, ZSTD_memset */
#include "third_party/zstd/lib/common/compiler.h" /* MEM_STATIC */
#define ZSTD_STATIC_LINKING_ONLY
#include "third_party/zstd/zstd.h" /* ZSTD_customMem */
#ifndef ZSTD_ALLOCATIONS_H
#define ZSTD_ALLOCATIONS_H
/* custom memory allocation functions */
MEM_STATIC void* ZSTD_customMalloc(size_t size, ZSTD_customMem customMem)
{
if (customMem.customAlloc)
return customMem.customAlloc(customMem.opaque, size);
return ZSTD_malloc(size);
}
MEM_STATIC void* ZSTD_customCalloc(size_t size, ZSTD_customMem customMem)
{
if (customMem.customAlloc) {
/* calloc implemented as malloc+memset;
* not as efficient as calloc, but next best guess for custom malloc */
void* const ptr = customMem.customAlloc(customMem.opaque, size);
ZSTD_memset(ptr, 0, size);
return ptr;
}
return ZSTD_calloc(1, size);
}
MEM_STATIC void ZSTD_customFree(void* ptr, ZSTD_customMem customMem)
{
if (ptr!=NULL) {
if (customMem.customFree)
customMem.customFree(customMem.opaque, ptr);
else
ZSTD_free(ptr);
}
}
#endif /* ZSTD_ALLOCATIONS_H */