cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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zstd_common.c (2717B)

      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 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#define ZSTD_DEPS_NEED_MALLOC
     17#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*  Version
     24******************************************/
     25unsigned ZSTD_versionNumber(void) { return ZSTD_VERSION_NUMBER; }
     26
     27const char* ZSTD_versionString(void) { return ZSTD_VERSION_STRING; }
     28
     29
     30/*-****************************************
     31*  ZSTD Error Management
     32******************************************/
     33#undef ZSTD_isError   /* defined within zstd_internal.h */
     34/*! ZSTD_isError() :
     35 *  tells if a return value is an error code
     36 *  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 allocator
     55****************************************************************/
     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        else
     81            ZSTD_free(ptr);
     82    }
     83}