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1/*2 * Copyright (c) Yann Collet, Facebook, Inc.3 * All rights reserved.4 *5 * This source code is licensed under both the BSD-style license (found in the6 * LICENSE file in the root directory of this source tree) and the GPLv2 (found7 * 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* Dependencies15***************************************/16#define ZSTD_DEPS_NEED_MALLOC17#include "zstd_deps.h" /* ZSTD_malloc, ZSTD_calloc, ZSTD_free, ZSTD_memset */18#include "error_private.h"19#include "zstd_internal.h"20 21 22/*-****************************************23* Version24******************************************/25unsigned ZSTD_versionNumber(void) { return ZSTD_VERSION_NUMBER; }26 27const char* ZSTD_versionString(void) { return ZSTD_VERSION_STRING; }28 29 30/*-****************************************31* ZSTD Error Management32******************************************/33#undef ZSTD_isError /* defined within zstd_internal.h */34/*! ZSTD_isError() :35 * tells if a return value is an error code36 * symbol is required for external callers */37unsigned ZSTD_isError(size_t code) { return ERR_isError(code); }38 39/*! ZSTD_getErrorName() :40 * provides error code string from function result (useful for debugging) */41const 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 */45ZSTD_ErrorCode ZSTD_getErrorCode(size_t code) { return ERR_getErrorCode(code); }46 47/*! ZSTD_getErrorString() :48 * provides error code string from enum */49const char* ZSTD_getErrorString(ZSTD_ErrorCode code) { return ERR_getErrorString(code); }50 51 52 53/*=**************************************************************54* Custom allocator55****************************************************************/56void* ZSTD_customMalloc(size_t size, ZSTD_customMem customMem)57{58 if (customMem.customAlloc)59 return customMem.customAlloc(customMem.opaque, size);60 return ZSTD_malloc(size);61}62 63void* ZSTD_customCalloc(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 ZSTD_memset(ptr, 0, size);70 return ptr;71 }72 return ZSTD_calloc(1, size);73}74 75void ZSTD_customFree(void* ptr, ZSTD_customMem customMem)76{77 if (ptr!=NULL) {78 if (customMem.customFree)79 customMem.customFree(customMem.opaque, ptr);80 else81 ZSTD_free(ptr);82 }83}84