Scott Baker | 2d89798 | 2019-09-24 11:50:08 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016-present, Yann Collet, Facebook, Inc. |
| 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 | |
| 12 | |
| 13 | /*-************************************* |
| 14 | * Dependencies |
| 15 | ***************************************/ |
| 16 | #include <stdlib.h> /* malloc, calloc, free */ |
| 17 | #include <string.h> /* memset */ |
| 18 | #include "error_private.h" |
| 19 | #include "zstd_internal.h" |
| 20 | |
| 21 | |
| 22 | /*-**************************************** |
| 23 | * Version |
| 24 | ******************************************/ |
| 25 | unsigned ZSTD_versionNumber(void) { return ZSTD_VERSION_NUMBER; } |
| 26 | |
| 27 | const char* ZSTD_versionString(void) { return ZSTD_VERSION_STRING; } |
| 28 | |
| 29 | |
| 30 | /*-**************************************** |
| 31 | * ZSTD Error Management |
| 32 | ******************************************/ |
Scott Baker | 8487c5d | 2019-10-18 12:49:46 -0700 | [diff] [blame^] | 33 | #undef ZSTD_isError /* defined within zstd_internal.h */ |
Scott Baker | 2d89798 | 2019-09-24 11:50:08 -0700 | [diff] [blame] | 34 | /*! ZSTD_isError() : |
Scott Baker | 8487c5d | 2019-10-18 12:49:46 -0700 | [diff] [blame^] | 35 | * tells if a return value is an error code |
| 36 | * symbol is required for external callers */ |
Scott Baker | 2d89798 | 2019-09-24 11:50:08 -0700 | [diff] [blame] | 37 | unsigned ZSTD_isError(size_t code) { return ERR_isError(code); } |
| 38 | |
| 39 | /*! ZSTD_getErrorName() : |
| 40 | * provides error code string from function result (useful for debugging) */ |
| 41 | const char* ZSTD_getErrorName(size_t code) { return ERR_getErrorName(code); } |
| 42 | |
| 43 | /*! ZSTD_getError() : |
| 44 | * convert a `size_t` function result into a proper ZSTD_errorCode enum */ |
| 45 | ZSTD_ErrorCode ZSTD_getErrorCode(size_t code) { return ERR_getErrorCode(code); } |
| 46 | |
| 47 | /*! ZSTD_getErrorString() : |
| 48 | * provides error code string from enum */ |
| 49 | const char* ZSTD_getErrorString(ZSTD_ErrorCode code) { return ERR_getErrorString(code); } |
| 50 | |
Scott Baker | 2d89798 | 2019-09-24 11:50:08 -0700 | [diff] [blame] | 51 | |
| 52 | |
| 53 | /*=************************************************************** |
| 54 | * Custom allocator |
| 55 | ****************************************************************/ |
| 56 | void* ZSTD_malloc(size_t size, ZSTD_customMem customMem) |
| 57 | { |
| 58 | if (customMem.customAlloc) |
| 59 | return customMem.customAlloc(customMem.opaque, size); |
| 60 | return malloc(size); |
| 61 | } |
| 62 | |
| 63 | void* ZSTD_calloc(size_t size, ZSTD_customMem customMem) |
| 64 | { |
| 65 | if (customMem.customAlloc) { |
| 66 | /* calloc implemented as malloc+memset; |
| 67 | * not as efficient as calloc, but next best guess for custom malloc */ |
| 68 | void* const ptr = customMem.customAlloc(customMem.opaque, size); |
| 69 | memset(ptr, 0, size); |
| 70 | return ptr; |
| 71 | } |
| 72 | return calloc(1, size); |
| 73 | } |
| 74 | |
| 75 | void ZSTD_free(void* ptr, ZSTD_customMem customMem) |
| 76 | { |
| 77 | if (ptr!=NULL) { |
| 78 | if (customMem.customFree) |
| 79 | customMem.customFree(customMem.opaque, ptr); |
| 80 | else |
| 81 | free(ptr); |
| 82 | } |
| 83 | } |