| 1 | /* |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This source code is licensed under both the BSD-style license (found in the |
| 6 | * LICENSE file in the root directory of this source tree) and the GPLv2 (found |
| 7 | * in the COPYING file in the root directory of this source tree). |
| 8 | * You may select, at your option, one of the above-listed licenses. |
| 9 | */ |
| 10 | |
| 11 | /* This file provides custom allocation primitives |
| 12 | */ |
| 13 | |
| 14 | #define ZSTD_DEPS_NEED_MALLOC |
| 15 | #include "zstd_deps.h" /* ZSTD_malloc, ZSTD_calloc, ZSTD_free, ZSTD_memset */ |
| 16 | |
| 17 | #include "mem.h" /* MEM_STATIC */ |
| 18 | #define ZSTD_STATIC_LINKING_ONLY |
| 19 | #include "../zstd.h" /* ZSTD_customMem */ |
| 20 | |
| 21 | #ifndef ZSTD_ALLOCATIONS_H |
| 22 | #define ZSTD_ALLOCATIONS_H |
| 23 | |
| 24 | /* custom memory allocation functions */ |
| 25 | |
| 26 | MEM_STATIC void* ZSTD_customMalloc(size_t size, ZSTD_customMem customMem) |
| 27 | { |
| 28 | if (customMem.customAlloc) |
| 29 | return customMem.customAlloc(customMem.opaque, size); |
| 30 | return ZSTD_malloc(size); |
| 31 | } |
| 32 | |
| 33 | MEM_STATIC void* ZSTD_customCalloc(size_t size, ZSTD_customMem customMem) |
| 34 | { |
| 35 | if (customMem.customAlloc) { |
| 36 | /* calloc implemented as malloc+memset; |
| 37 | * not as efficient as calloc, but next best guess for custom malloc */ |
| 38 | void* const ptr = customMem.customAlloc(customMem.opaque, size); |
| 39 | ZSTD_memset(ptr, 0, size); |
| 40 | return ptr; |
| 41 | } |
| 42 | return ZSTD_calloc(1, size); |
| 43 | } |
| 44 | |
| 45 | MEM_STATIC void ZSTD_customFree(void* ptr, ZSTD_customMem customMem) |
| 46 | { |
| 47 | if (ptr!=NULL) { |
| 48 | if (customMem.customFree) |
| 49 | customMem.customFree(customMem.opaque, ptr); |
| 50 | else |
| 51 | ZSTD_free(ptr); |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | #endif /* ZSTD_ALLOCATIONS_H */ |