zstd_common.c

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/*
 * Copyright (c) 2016-2020, Yann Collet, Facebook, Inc.
 * 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.
 */
 
 
 
/*-*************************************
*  Dependencies
***************************************/
#include <stdlib.h>      /* malloc, calloc, free */
#include <string.h>      /* memset */
#include "error_private.h"
#include "zstd_internal.h"
 
 
/*-****************************************
*  Version
******************************************/
unsigned ZSTD_versionNumber(void) { return ZSTD_VERSION_NUMBER; }
 
const char* ZSTD_versionString(void) { return ZSTD_VERSION_STRING; }
 
 
/*-****************************************
*  ZSTD Error Management
******************************************/
#undef ZSTD_isError   /* defined within zstd_internal.h */
unsigned ZSTD_isError(size_t code) { return ERR_isError(code); }
 
const char* ZSTD_getErrorName(size_t code) { return ERR_getErrorName(code); }
 
ZSTD_ErrorCode ZSTD_getErrorCode(size_t code) { return ERR_getErrorCode(code); }
 
const char* ZSTD_getErrorString(ZSTD_ErrorCode code) { return ERR_getErrorString(code); }
 
 
 
/*=**************************************************************
*  Custom allocator
****************************************************************/
void* ZSTD_malloc(size_t size, ZSTD_customMem customMem)
{
    return customMem.customAlloc(customMem.opaque, size);
}
 
void* ZSTD_calloc(size_t size, ZSTD_customMem customMem)
{
    /* 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);
    memset(ptr, 0, size);
    return ptr;
}
 
void ZSTD_free(void* ptr, ZSTD_customMem customMem)
{
    if (ptr!=NULL)
        customMem.customFree(customMem.opaque, ptr);
}