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fileio.c
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fileio.c
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/*
* Copyright (c) 2016-present, 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.
*/
/* *************************************
* Compiler Options
***************************************/
#ifdef _MSC_VER /* Visual */
# pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
# pragma warning(disable : 4204) /* non-constant aggregate initializer */
#endif
#if defined(__MINGW32__) && !defined(_POSIX_SOURCE)
# define _POSIX_SOURCE 1 /* disable %llu warnings with MinGW on Windows */
#endif
#if defined(__linux__) || (defined(__APPLE__) && defined(__MACH__))
# define BACKTRACES_ENABLE 1
#endif
/*-*************************************
* Includes
***************************************/
#include "platform.h" /* Large Files support, SET_BINARY_MODE */
#include "util.h" /* UTIL_getFileSize, UTIL_isRegularFile */
#include <stdio.h> /* fprintf, fopen, fread, _fileno, stdin, stdout */
#include <stdlib.h> /* malloc, free */
#include <string.h> /* strcmp, strlen */
#include <errno.h> /* errno */
#include <signal.h>
#ifdef BACKTRACES_ENABLE
# include <execinfo.h> /* backtrace, backtrace_symbols */
#endif
#if defined (_MSC_VER)
# include <sys/stat.h>
# include <io.h>
#endif
#include "debug.h"
#include "mem.h"
#include "fileio.h"
#include "util.h"
#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_magicNumber, ZSTD_frameHeaderSize_max */
#include "zstd.h"
#include "zstd_errors.h" /* ZSTD_error_frameParameter_windowTooLarge */
#if defined(ZSTD_GZCOMPRESS) || defined(ZSTD_GZDECOMPRESS)
# include <zlib.h>
# if !defined(z_const)
# define z_const
# endif
#endif
#if defined(ZSTD_LZMACOMPRESS) || defined(ZSTD_LZMADECOMPRESS)
# include <lzma.h>
#endif
#define LZ4_MAGICNUMBER 0x184D2204
#if defined(ZSTD_LZ4COMPRESS) || defined(ZSTD_LZ4DECOMPRESS)
# define LZ4F_ENABLE_OBSOLETE_ENUMS
# include <lz4frame.h>
# include <lz4.h>
#endif
/*-*************************************
* Constants
***************************************/
#define KB *(1<<10)
#define MB *(1<<20)
#define GB *(1U<<30)
#define ADAPT_WINDOWLOG_DEFAULT 23 /* 8 MB */
#define DICTSIZE_MAX (32 MB) /* protection against large input (attack scenario) */
#define FNSPACE 30
/*-*************************************
* Macros
***************************************/
#define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
#define DISPLAYOUT(...) fprintf(stdout, __VA_ARGS__)
#define DISPLAYLEVEL(l, ...) { if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); } }
static int g_displayLevel = 2; /* 0 : no display; 1: errors; 2: + result + interaction + warnings; 3: + progression; 4: + information */
void FIO_setNotificationLevel(unsigned level) { g_displayLevel=level; }
static const U64 g_refreshRate = SEC_TO_MICRO / 6;
static UTIL_time_t g_displayClock = UTIL_TIME_INITIALIZER;
#define READY_FOR_UPDATE() (UTIL_clockSpanMicro(g_displayClock) > g_refreshRate)
#define DELAY_NEXT_UPDATE() { g_displayClock = UTIL_getTime(); }
#define DISPLAYUPDATE(l, ...) { \
if (g_displayLevel>=l) { \
if (READY_FOR_UPDATE() || (g_displayLevel>=4)) { \
DELAY_NEXT_UPDATE(); \
DISPLAY(__VA_ARGS__); \
if (g_displayLevel>=4) fflush(stderr); \
} } }
#undef MIN /* in case it would be already defined */
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define EXM_THROW(error, ...) \
{ \
DISPLAYLEVEL(1, "zstd: "); \
DEBUGLOG(1, "Error defined at %s, line %i : \n", __FILE__, __LINE__); \
DISPLAYLEVEL(1, "error %i : ", error); \
DISPLAYLEVEL(1, __VA_ARGS__); \
DISPLAYLEVEL(1, " \n"); \
exit(error); \
}
#define CHECK_V(v, f) \
v = f; \
if (ZSTD_isError(v)) { \
DEBUGLOG(1, "%s \n", #f); \
EXM_THROW(11, "%s", ZSTD_getErrorName(v)); \
}
#define CHECK(f) { size_t err; CHECK_V(err, f); }
/*-************************************
* Signal (Ctrl-C trapping)
**************************************/
static const char* g_artefact = NULL;
static void INThandler(int sig)
{
assert(sig==SIGINT); (void)sig;
#if !defined(_MSC_VER)
signal(sig, SIG_IGN); /* this invocation generates a buggy warning in Visual Studio */
#endif
if (g_artefact) {
assert(UTIL_isRegularFile(g_artefact));
remove(g_artefact);
}
DISPLAY("\n");
exit(2);
}
static void addHandler(char const* dstFileName)
{
if (UTIL_isRegularFile(dstFileName)) {
g_artefact = dstFileName;
signal(SIGINT, INThandler);
} else {
g_artefact = NULL;
}
}
/* Idempotent */
static void clearHandler(void)
{
if (g_artefact) signal(SIGINT, SIG_DFL);
g_artefact = NULL;
}
/*-*********************************************************
* Termination signal trapping (Print debug stack trace)
***********************************************************/
#ifdef BACKTRACES_ENABLE
#define MAX_STACK_FRAMES 50
static void ABRThandler(int sig) {
const char* name;
void* addrlist[MAX_STACK_FRAMES];
char** symbollist;
U32 addrlen, i;
switch (sig) {
case SIGABRT: name = "SIGABRT"; break;
case SIGFPE: name = "SIGFPE"; break;
case SIGILL: name = "SIGILL"; break;
case SIGINT: name = "SIGINT"; break;
case SIGSEGV: name = "SIGSEGV"; break;
default: name = "UNKNOWN";
}
DISPLAY("Caught %s signal, printing stack:\n", name);
/* Retrieve current stack addresses. */
addrlen = backtrace(addrlist, MAX_STACK_FRAMES);
if (addrlen == 0) {
DISPLAY("\n");
return;
}
/* Create readable strings to each frame. */
symbollist = backtrace_symbols(addrlist, addrlen);
/* Print the stack trace, excluding calls handling the signal. */
for (i = ZSTD_START_SYMBOLLIST_FRAME; i < addrlen; i++) {
DISPLAY("%s\n", symbollist[i]);
}
free(symbollist);
/* Reset and raise the signal so default handler runs. */
signal(sig, SIG_DFL);
raise(sig);
}
#endif
void FIO_addAbortHandler()
{
#ifdef BACKTRACES_ENABLE
signal(SIGABRT, ABRThandler);
signal(SIGFPE, ABRThandler);
signal(SIGILL, ABRThandler);
signal(SIGSEGV, ABRThandler);
signal(SIGBUS, ABRThandler);
#endif
}
/*-************************************************************
* Avoid fseek()'s 2GiB barrier with MSVC, macOS, *BSD, MinGW
***************************************************************/
#if defined(_MSC_VER) && _MSC_VER >= 1400
# define LONG_SEEK _fseeki64
#elif !defined(__64BIT__) && (PLATFORM_POSIX_VERSION >= 200112L) /* No point defining Large file for 64 bit */
# define LONG_SEEK fseeko
#elif defined(__MINGW32__) && !defined(__STRICT_ANSI__) && !defined(__NO_MINGW_LFS) && defined(__MSVCRT__)
# define LONG_SEEK fseeko64
#elif defined(_WIN32) && !defined(__DJGPP__)
# include <windows.h>
static int LONG_SEEK(FILE* file, __int64 offset, int origin) {
LARGE_INTEGER off;
DWORD method;
off.QuadPart = offset;
if (origin == SEEK_END)
method = FILE_END;
else if (origin == SEEK_CUR)
method = FILE_CURRENT;
else
method = FILE_BEGIN;
if (SetFilePointerEx((HANDLE) _get_osfhandle(_fileno(file)), off, NULL, method))
return 0;
else
return -1;
}
#else
# define LONG_SEEK fseek
#endif
/*-*************************************
* Local Parameters - Not thread safe
***************************************/
static FIO_compressionType_t g_compressionType = FIO_zstdCompression;
void FIO_setCompressionType(FIO_compressionType_t compressionType) { g_compressionType = compressionType; }
static U32 g_overwrite = 0;
void FIO_overwriteMode(void) { g_overwrite=1; }
static U32 g_sparseFileSupport = 1; /* 0: no sparse allowed; 1: auto (file yes, stdout no); 2: force sparse */
void FIO_setSparseWrite(unsigned sparse) { g_sparseFileSupport=sparse; }
static U32 g_dictIDFlag = 1;
void FIO_setDictIDFlag(unsigned dictIDFlag) { g_dictIDFlag = dictIDFlag; }
static U32 g_checksumFlag = 1;
void FIO_setChecksumFlag(unsigned checksumFlag) { g_checksumFlag = checksumFlag; }
static U32 g_removeSrcFile = 0;
void FIO_setRemoveSrcFile(unsigned flag) { g_removeSrcFile = (flag>0); }
static U32 g_memLimit = 0;
void FIO_setMemLimit(unsigned memLimit) { g_memLimit = memLimit; }
static U32 g_nbWorkers = 1;
void FIO_setNbWorkers(unsigned nbWorkers) {
#ifndef ZSTD_MULTITHREAD
if (nbWorkers > 0) DISPLAYLEVEL(2, "Note : multi-threading is disabled \n");
#endif
g_nbWorkers = nbWorkers;
}
static U32 g_blockSize = 0;
void FIO_setBlockSize(unsigned blockSize) {
if (blockSize && g_nbWorkers==0)
DISPLAYLEVEL(2, "Setting block size is useless in single-thread mode \n");
g_blockSize = blockSize;
}
#define FIO_OVERLAP_LOG_NOTSET 9999
static U32 g_overlapLog = FIO_OVERLAP_LOG_NOTSET;
void FIO_setOverlapLog(unsigned overlapLog){
if (overlapLog && g_nbWorkers==0)
DISPLAYLEVEL(2, "Setting overlapLog is useless in single-thread mode \n");
g_overlapLog = overlapLog;
}
static U32 g_adaptiveMode = 0;
void FIO_setAdaptiveMode(unsigned adapt) {
if ((adapt>0) && (g_nbWorkers==0))
EXM_THROW(1, "Adaptive mode is not compatible with single thread mode \n");
g_adaptiveMode = adapt;
}
static int g_minAdaptLevel = -50; /* initializing this value requires a constant, so ZSTD_minCLevel() doesn't work */
void FIO_setAdaptMin(int minCLevel)
{
#ifndef ZSTD_NOCOMPRESS
assert(minCLevel >= ZSTD_minCLevel());
#endif
g_minAdaptLevel = minCLevel;
}
static int g_maxAdaptLevel = 22; /* initializing this value requires a constant, so ZSTD_maxCLevel() doesn't work */
void FIO_setAdaptMax(int maxCLevel)
{
g_maxAdaptLevel = maxCLevel;
}
static U32 g_ldmFlag = 0;
void FIO_setLdmFlag(unsigned ldmFlag) {
g_ldmFlag = (ldmFlag>0);
}
static U32 g_ldmHashLog = 0;
void FIO_setLdmHashLog(unsigned ldmHashLog) {
g_ldmHashLog = ldmHashLog;
}
static U32 g_ldmMinMatch = 0;
void FIO_setLdmMinMatch(unsigned ldmMinMatch) {
g_ldmMinMatch = ldmMinMatch;
}
#define FIO_LDM_PARAM_NOTSET 9999
static U32 g_ldmBucketSizeLog = FIO_LDM_PARAM_NOTSET;
void FIO_setLdmBucketSizeLog(unsigned ldmBucketSizeLog) {
g_ldmBucketSizeLog = ldmBucketSizeLog;
}
static U32 g_ldmHashEveryLog = FIO_LDM_PARAM_NOTSET;
void FIO_setLdmHashEveryLog(unsigned ldmHashEveryLog) {
g_ldmHashEveryLog = ldmHashEveryLog;
}
/*-*************************************
* Functions
***************************************/
/** FIO_remove() :
* @result : Unlink `fileName`, even if it's read-only */
static int FIO_remove(const char* path)
{
if (!UTIL_isRegularFile(path)) {
DISPLAYLEVEL(2, "zstd: Refusing to remove non-regular file %s\n", path);
return 0;
}
#if defined(_WIN32) || defined(WIN32)
/* windows doesn't allow remove read-only files,
* so try to make it writable first */
chmod(path, _S_IWRITE);
#endif
return remove(path);
}
/** FIO_openSrcFile() :
* condition : `srcFileName` must be non-NULL.
* @result : FILE* to `srcFileName`, or NULL if it fails */
static FILE* FIO_openSrcFile(const char* srcFileName)
{
assert(srcFileName != NULL);
if (!strcmp (srcFileName, stdinmark)) {
DISPLAYLEVEL(4,"Using stdin for input\n");
SET_BINARY_MODE(stdin);
return stdin;
}
if (!UTIL_isRegularFile(srcFileName)) {
DISPLAYLEVEL(1, "zstd: %s is not a regular file -- ignored \n",
srcFileName);
return NULL;
}
{ FILE* const f = fopen(srcFileName, "rb");
if (f == NULL)
DISPLAYLEVEL(1, "zstd: %s: %s \n", srcFileName, strerror(errno));
return f;
}
}
/** FIO_openDstFile() :
* condition : `dstFileName` must be non-NULL.
* @result : FILE* to `dstFileName`, or NULL if it fails */
static FILE* FIO_openDstFile(const char* dstFileName)
{
assert(dstFileName != NULL);
if (!strcmp (dstFileName, stdoutmark)) {
DISPLAYLEVEL(4,"Using stdout for output\n");
SET_BINARY_MODE(stdout);
if (g_sparseFileSupport==1) {
g_sparseFileSupport = 0;
DISPLAYLEVEL(4, "Sparse File Support is automatically disabled on stdout ; try --sparse \n");
}
return stdout;
}
if (g_sparseFileSupport == 1) {
g_sparseFileSupport = ZSTD_SPARSE_DEFAULT;
}
if (UTIL_isRegularFile(dstFileName)) {
FILE* fCheck;
if (!strcmp(dstFileName, nulmark)) {
EXM_THROW(40, "%s is unexpectedly a regular file", dstFileName);
}
/* Check if destination file already exists */
fCheck = fopen( dstFileName, "rb" );
if (fCheck != NULL) { /* dst file exists, authorization prompt */
fclose(fCheck);
if (!g_overwrite) {
if (g_displayLevel <= 1) {
/* No interaction possible */
DISPLAY("zstd: %s already exists; not overwritten \n",
dstFileName);
return NULL;
}
DISPLAY("zstd: %s already exists; overwrite (y/N) ? ",
dstFileName);
{ int ch = getchar();
if ((ch!='Y') && (ch!='y')) {
DISPLAY(" not overwritten \n");
return NULL;
}
/* flush rest of input line */
while ((ch!=EOF) && (ch!='\n')) ch = getchar();
} }
/* need to unlink */
FIO_remove(dstFileName);
} }
{ FILE* const f = fopen( dstFileName, "wb" );
if (f == NULL)
DISPLAYLEVEL(1, "zstd: %s: %s\n", dstFileName, strerror(errno));
return f;
}
}
/*! FIO_createDictBuffer() :
* creates a buffer, pointed by `*bufferPtr`,
* loads `filename` content into it, up to DICTSIZE_MAX bytes.
* @return : loaded size
* if fileName==NULL, returns 0 and a NULL pointer
*/
static size_t FIO_createDictBuffer(void** bufferPtr, const char* fileName)
{
FILE* fileHandle;
U64 fileSize;
assert(bufferPtr != NULL);
*bufferPtr = NULL;
if (fileName == NULL) return 0;
DISPLAYLEVEL(4,"Loading %s as dictionary \n", fileName);
fileHandle = fopen(fileName, "rb");
if (fileHandle==NULL) EXM_THROW(31, "%s: %s", fileName, strerror(errno));
fileSize = UTIL_getFileSize(fileName);
if (fileSize > DICTSIZE_MAX) {
EXM_THROW(32, "Dictionary file %s is too large (> %u MB)",
fileName, DICTSIZE_MAX >> 20); /* avoid extreme cases */
}
*bufferPtr = malloc((size_t)fileSize);
if (*bufferPtr==NULL) EXM_THROW(34, "%s", strerror(errno));
{ size_t const readSize = fread(*bufferPtr, 1, (size_t)fileSize, fileHandle);
if (readSize!=fileSize)
EXM_THROW(35, "Error reading dictionary file %s", fileName);
}
fclose(fileHandle);
return (size_t)fileSize;
}
#ifndef ZSTD_NOCOMPRESS
/* **********************************************************************
* Compression
************************************************************************/
typedef struct {
FILE* srcFile;
FILE* dstFile;
void* srcBuffer;
size_t srcBufferSize;
void* dstBuffer;
size_t dstBufferSize;
ZSTD_CStream* cctx;
} cRess_t;
static cRess_t FIO_createCResources(const char* dictFileName, int cLevel,
U64 srcSize,
ZSTD_compressionParameters comprParams) {
cRess_t ress;
memset(&ress, 0, sizeof(ress));
DISPLAYLEVEL(6, "FIO_createCResources \n");
ress.cctx = ZSTD_createCCtx();
if (ress.cctx == NULL)
EXM_THROW(30, "allocation error : can't create ZSTD_CCtx");
ress.srcBufferSize = ZSTD_CStreamInSize();
ress.srcBuffer = malloc(ress.srcBufferSize);
ress.dstBufferSize = ZSTD_CStreamOutSize();
ress.dstBuffer = malloc(ress.dstBufferSize);
if (!ress.srcBuffer || !ress.dstBuffer)
EXM_THROW(31, "allocation error : not enough memory");
/* Advanced parameters, including dictionary */
{ void* dictBuffer;
size_t const dictBuffSize = FIO_createDictBuffer(&dictBuffer, dictFileName); /* works with dictFileName==NULL */
if (dictFileName && (dictBuffer==NULL))
EXM_THROW(32, "allocation error : can't create dictBuffer");
if (g_adaptiveMode && !g_ldmFlag && !comprParams.windowLog)
comprParams.windowLog = ADAPT_WINDOWLOG_DEFAULT;
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_contentSizeFlag, 1) ); /* always enable content size when available (note: supposed to be default) */
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_dictIDFlag, g_dictIDFlag) );
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_checksumFlag, g_checksumFlag) );
/* compression level */
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_compressionLevel, (unsigned)cLevel) );
/* long distance matching */
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_enableLongDistanceMatching, g_ldmFlag) );
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_ldmHashLog, g_ldmHashLog) );
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_ldmMinMatch, g_ldmMinMatch) );
if (g_ldmBucketSizeLog != FIO_LDM_PARAM_NOTSET) {
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_ldmBucketSizeLog, g_ldmBucketSizeLog) );
}
if (g_ldmHashEveryLog != FIO_LDM_PARAM_NOTSET) {
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_ldmHashEveryLog, g_ldmHashEveryLog) );
}
/* compression parameters */
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_windowLog, comprParams.windowLog) );
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_chainLog, comprParams.chainLog) );
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_hashLog, comprParams.hashLog) );
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_searchLog, comprParams.searchLog) );
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_minMatch, comprParams.searchLength) );
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_targetLength, comprParams.targetLength) );
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_compressionStrategy, (U32)comprParams.strategy) );
/* multi-threading */
#ifdef ZSTD_MULTITHREAD
DISPLAYLEVEL(5,"set nb workers = %u \n", g_nbWorkers);
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_nbWorkers, g_nbWorkers) );
if ( (g_overlapLog == FIO_OVERLAP_LOG_NOTSET)
&& (cLevel == ZSTD_maxCLevel()) )
g_overlapLog = 9; /* full overlap */
if (g_overlapLog != FIO_OVERLAP_LOG_NOTSET) {
DISPLAYLEVEL(3,"set overlapLog = %u \n", g_overlapLog);
CHECK( ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_overlapSizeLog, g_overlapLog) );
}
#endif
/* dictionary */
CHECK( ZSTD_CCtx_setPledgedSrcSize(ress.cctx, srcSize) ); /* set the value temporarily for dictionary loading, to adapt compression parameters */
CHECK( ZSTD_CCtx_loadDictionary(ress.cctx, dictBuffer, dictBuffSize) );
CHECK( ZSTD_CCtx_setPledgedSrcSize(ress.cctx, ZSTD_CONTENTSIZE_UNKNOWN) ); /* reset */
free(dictBuffer);
}
return ress;
}
static void FIO_freeCResources(cRess_t ress)
{
free(ress.srcBuffer);
free(ress.dstBuffer);
ZSTD_freeCStream(ress.cctx); /* never fails */
}
#ifdef ZSTD_GZCOMPRESS
static unsigned long long
FIO_compressGzFrame(cRess_t* ress,
const char* srcFileName, U64 const srcFileSize,
int compressionLevel, U64* readsize)
{
unsigned long long inFileSize = 0, outFileSize = 0;
z_stream strm;
int ret;
if (compressionLevel > Z_BEST_COMPRESSION)
compressionLevel = Z_BEST_COMPRESSION;
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
ret = deflateInit2(&strm, compressionLevel, Z_DEFLATED,
15 /* maxWindowLogSize */ + 16 /* gzip only */,
8, Z_DEFAULT_STRATEGY); /* see http://www.zlib.net/manual.html */
if (ret != Z_OK)
EXM_THROW(71, "zstd: %s: deflateInit2 error %d \n", srcFileName, ret);
strm.next_in = 0;
strm.avail_in = 0;
strm.next_out = (Bytef*)ress->dstBuffer;
strm.avail_out = (uInt)ress->dstBufferSize;
while (1) {
if (strm.avail_in == 0) {
size_t const inSize = fread(ress->srcBuffer, 1, ress->srcBufferSize, ress->srcFile);
if (inSize == 0) break;
inFileSize += inSize;
strm.next_in = (z_const unsigned char*)ress->srcBuffer;
strm.avail_in = (uInt)inSize;
}
ret = deflate(&strm, Z_NO_FLUSH);
if (ret != Z_OK)
EXM_THROW(72, "zstd: %s: deflate error %d \n", srcFileName, ret);
{ size_t const decompBytes = ress->dstBufferSize - strm.avail_out;
if (decompBytes) {
if (fwrite(ress->dstBuffer, 1, decompBytes, ress->dstFile) != decompBytes)
EXM_THROW(73, "Write error : cannot write to output file");
outFileSize += decompBytes;
strm.next_out = (Bytef*)ress->dstBuffer;
strm.avail_out = (uInt)ress->dstBufferSize;
}
}
if (srcFileSize == UTIL_FILESIZE_UNKNOWN)
DISPLAYUPDATE(2, "\rRead : %u MB ==> %.2f%%",
(U32)(inFileSize>>20),
(double)outFileSize/inFileSize*100)
else
DISPLAYUPDATE(2, "\rRead : %u / %u MB ==> %.2f%%",
(U32)(inFileSize>>20), (U32)(srcFileSize>>20),
(double)outFileSize/inFileSize*100);
}
while (1) {
ret = deflate(&strm, Z_FINISH);
{ size_t const decompBytes = ress->dstBufferSize - strm.avail_out;
if (decompBytes) {
if (fwrite(ress->dstBuffer, 1, decompBytes, ress->dstFile) != decompBytes)
EXM_THROW(75, "Write error : cannot write to output file");
outFileSize += decompBytes;
strm.next_out = (Bytef*)ress->dstBuffer;
strm.avail_out = (uInt)ress->dstBufferSize;
} }
if (ret == Z_STREAM_END) break;
if (ret != Z_BUF_ERROR)
EXM_THROW(77, "zstd: %s: deflate error %d \n", srcFileName, ret);
}
ret = deflateEnd(&strm);
if (ret != Z_OK)
EXM_THROW(79, "zstd: %s: deflateEnd error %d \n", srcFileName, ret);
*readsize = inFileSize;
return outFileSize;
}
#endif
#ifdef ZSTD_LZMACOMPRESS
static unsigned long long
FIO_compressLzmaFrame(cRess_t* ress,
const char* srcFileName, U64 const srcFileSize,
int compressionLevel, U64* readsize, int plain_lzma)
{
unsigned long long inFileSize = 0, outFileSize = 0;
lzma_stream strm = LZMA_STREAM_INIT;
lzma_action action = LZMA_RUN;
lzma_ret ret;
if (compressionLevel < 0) compressionLevel = 0;
if (compressionLevel > 9) compressionLevel = 9;
if (plain_lzma) {
lzma_options_lzma opt_lzma;
if (lzma_lzma_preset(&opt_lzma, compressionLevel))
EXM_THROW(71, "zstd: %s: lzma_lzma_preset error", srcFileName);
ret = lzma_alone_encoder(&strm, &opt_lzma); /* LZMA */
if (ret != LZMA_OK)
EXM_THROW(71, "zstd: %s: lzma_alone_encoder error %d", srcFileName, ret);
} else {
ret = lzma_easy_encoder(&strm, compressionLevel, LZMA_CHECK_CRC64); /* XZ */
if (ret != LZMA_OK)
EXM_THROW(71, "zstd: %s: lzma_easy_encoder error %d", srcFileName, ret);
}
strm.next_in = 0;
strm.avail_in = 0;
strm.next_out = (BYTE*)ress->dstBuffer;
strm.avail_out = ress->dstBufferSize;
while (1) {
if (strm.avail_in == 0) {
size_t const inSize = fread(ress->srcBuffer, 1, ress->srcBufferSize, ress->srcFile);
if (inSize == 0) action = LZMA_FINISH;
inFileSize += inSize;
strm.next_in = (BYTE const*)ress->srcBuffer;
strm.avail_in = inSize;
}
ret = lzma_code(&strm, action);
if (ret != LZMA_OK && ret != LZMA_STREAM_END)
EXM_THROW(72, "zstd: %s: lzma_code encoding error %d", srcFileName, ret);
{ size_t const compBytes = ress->dstBufferSize - strm.avail_out;
if (compBytes) {
if (fwrite(ress->dstBuffer, 1, compBytes, ress->dstFile) != compBytes)
EXM_THROW(73, "Write error : cannot write to output file");
outFileSize += compBytes;
strm.next_out = (BYTE*)ress->dstBuffer;
strm.avail_out = ress->dstBufferSize;
} }
if (srcFileSize == UTIL_FILESIZE_UNKNOWN)
DISPLAYUPDATE(2, "\rRead : %u MB ==> %.2f%%",
(U32)(inFileSize>>20),
(double)outFileSize/inFileSize*100)
else
DISPLAYUPDATE(2, "\rRead : %u / %u MB ==> %.2f%%",
(U32)(inFileSize>>20), (U32)(srcFileSize>>20),
(double)outFileSize/inFileSize*100);
if (ret == LZMA_STREAM_END) break;
}
lzma_end(&strm);
*readsize = inFileSize;
return outFileSize;
}
#endif
#ifdef ZSTD_LZ4COMPRESS
#if LZ4_VERSION_NUMBER <= 10600
#define LZ4F_blockLinked blockLinked
#define LZ4F_max64KB max64KB
#endif
static int FIO_LZ4_GetBlockSize_FromBlockId (int id) { return (1 << (8 + (2 * id))); }
static unsigned long long
FIO_compressLz4Frame(cRess_t* ress,
const char* srcFileName, U64 const srcFileSize,
int compressionLevel, U64* readsize)
{
const size_t blockSize = FIO_LZ4_GetBlockSize_FromBlockId(LZ4F_max64KB);
unsigned long long inFileSize = 0, outFileSize = 0;
LZ4F_preferences_t prefs;
LZ4F_compressionContext_t ctx;
LZ4F_errorCode_t const errorCode = LZ4F_createCompressionContext(&ctx, LZ4F_VERSION);
if (LZ4F_isError(errorCode))
EXM_THROW(31, "zstd: failed to create lz4 compression context");
memset(&prefs, 0, sizeof(prefs));
assert(blockSize <= ress->srcBufferSize);
prefs.autoFlush = 1;
prefs.compressionLevel = compressionLevel;
prefs.frameInfo.blockMode = LZ4F_blockLinked;
prefs.frameInfo.blockSizeID = LZ4F_max64KB;
prefs.frameInfo.contentChecksumFlag = (contentChecksum_t)g_checksumFlag;
#if LZ4_VERSION_NUMBER >= 10600
prefs.frameInfo.contentSize = (srcFileSize==UTIL_FILESIZE_UNKNOWN) ? 0 : srcFileSize;
#endif
assert(LZ4F_compressBound(blockSize, &prefs) <= ress->dstBufferSize);
{
size_t readSize;
size_t headerSize = LZ4F_compressBegin(ctx, ress->dstBuffer, ress->dstBufferSize, &prefs);
if (LZ4F_isError(headerSize))
EXM_THROW(33, "File header generation failed : %s",
LZ4F_getErrorName(headerSize));
if (fwrite(ress->dstBuffer, 1, headerSize, ress->dstFile) != headerSize)
EXM_THROW(34, "Write error : cannot write header");
outFileSize += headerSize;
/* Read first block */
readSize = fread(ress->srcBuffer, (size_t)1, (size_t)blockSize, ress->srcFile);
inFileSize += readSize;
/* Main Loop */
while (readSize>0) {
size_t outSize;
/* Compress Block */
outSize = LZ4F_compressUpdate(ctx, ress->dstBuffer, ress->dstBufferSize, ress->srcBuffer, readSize, NULL);
if (LZ4F_isError(outSize))
EXM_THROW(35, "zstd: %s: lz4 compression failed : %s",
srcFileName, LZ4F_getErrorName(outSize));
outFileSize += outSize;
if (srcFileSize == UTIL_FILESIZE_UNKNOWN)
DISPLAYUPDATE(2, "\rRead : %u MB ==> %.2f%%",
(U32)(inFileSize>>20),
(double)outFileSize/inFileSize*100)
else
DISPLAYUPDATE(2, "\rRead : %u / %u MB ==> %.2f%%",
(U32)(inFileSize>>20), (U32)(srcFileSize>>20),
(double)outFileSize/inFileSize*100);
/* Write Block */
{ size_t const sizeCheck = fwrite(ress->dstBuffer, 1, outSize, ress->dstFile);
if (sizeCheck!=outSize) EXM_THROW(36, "Write error : cannot write compressed block"); }
/* Read next block */
readSize = fread(ress->srcBuffer, (size_t)1, (size_t)blockSize, ress->srcFile);
inFileSize += readSize;
}
if (ferror(ress->srcFile)) EXM_THROW(37, "Error reading %s ", srcFileName);
/* End of Stream mark */
headerSize = LZ4F_compressEnd(ctx, ress->dstBuffer, ress->dstBufferSize, NULL);
if (LZ4F_isError(headerSize))
EXM_THROW(38, "zstd: %s: lz4 end of file generation failed : %s",
srcFileName, LZ4F_getErrorName(headerSize));
{ size_t const sizeCheck = fwrite(ress->dstBuffer, 1, headerSize, ress->dstFile);
if (sizeCheck!=headerSize) EXM_THROW(39, "Write error : cannot write end of stream"); }
outFileSize += headerSize;
}
*readsize = inFileSize;
LZ4F_freeCompressionContext(ctx);
return outFileSize;
}
#endif
static unsigned long long
FIO_compressZstdFrame(const cRess_t* ressPtr,
const char* srcFileName, U64 fileSize,
int compressionLevel, U64* readsize)
{
cRess_t const ress = *ressPtr;
FILE* const srcFile = ress.srcFile;
FILE* const dstFile = ress.dstFile;
U64 compressedfilesize = 0;
ZSTD_EndDirective directive = ZSTD_e_continue;
/* stats */
ZSTD_frameProgression previous_zfp_update = { 0, 0, 0, 0, 0, 0 };
ZSTD_frameProgression previous_zfp_correction = { 0, 0, 0, 0, 0, 0 };
typedef enum { noChange, slower, faster } speedChange_e;
speedChange_e speedChange = noChange;
unsigned flushWaiting = 0;
unsigned inputPresented = 0;
unsigned inputBlocked = 0;
unsigned lastJobID = 0;
DISPLAYLEVEL(6, "compression using zstd format \n");
/* init */
if (fileSize != UTIL_FILESIZE_UNKNOWN) {
CHECK(ZSTD_CCtx_setPledgedSrcSize(ress.cctx, fileSize));
}
(void)srcFileName;
/* Main compression loop */
do {
size_t stillToFlush;
/* Fill input Buffer */
size_t const inSize = fread(ress.srcBuffer, (size_t)1, ress.srcBufferSize, srcFile);
ZSTD_inBuffer inBuff = { ress.srcBuffer, inSize, 0 };
DISPLAYLEVEL(6, "fread %u bytes from source \n", (U32)inSize);
*readsize += inSize;
if ((inSize == 0) || (*readsize == fileSize))
directive = ZSTD_e_end;
stillToFlush = 1;
while ((inBuff.pos != inBuff.size) /* input buffer must be entirely ingested */
|| (directive == ZSTD_e_end && stillToFlush != 0) ) {
size_t const oldIPos = inBuff.pos;
ZSTD_outBuffer outBuff = { ress.dstBuffer, ress.dstBufferSize, 0 };
size_t const toFlushNow = ZSTD_toFlushNow(ress.cctx);
CHECK_V(stillToFlush, ZSTD_compress_generic(ress.cctx, &outBuff, &inBuff, directive));
/* count stats */
inputPresented++;
if (oldIPos == inBuff.pos) inputBlocked++; /* input buffer is full and can't take any more : input speed is faster than consumption rate */
if (!toFlushNow) flushWaiting = 1;
/* Write compressed stream */
DISPLAYLEVEL(6, "ZSTD_compress_generic(end:%u) => input pos(%u)<=(%u)size ; output generated %u bytes \n",
(U32)directive, (U32)inBuff.pos, (U32)inBuff.size, (U32)outBuff.pos);
if (outBuff.pos) {
size_t const sizeCheck = fwrite(ress.dstBuffer, 1, outBuff.pos, dstFile);
if (sizeCheck != outBuff.pos)
EXM_THROW(25, "Write error : cannot write compressed block");
compressedfilesize += outBuff.pos;
}
/* display notification; and adapt compression level */
if (READY_FOR_UPDATE()) {
ZSTD_frameProgression const zfp = ZSTD_getFrameProgression(ress.cctx);
double const cShare = (double)zfp.produced / (zfp.consumed + !zfp.consumed/*avoid div0*/) * 100;
/* display progress notifications */
if (g_displayLevel >= 3) {
DISPLAYUPDATE(3, "\r(L%i) Buffered :%4u MB - Consumed :%4u MB - Compressed :%4u MB => %.2f%% ",
compressionLevel,
(U32)((zfp.ingested - zfp.consumed) >> 20),
(U32)(zfp.consumed >> 20),
(U32)(zfp.produced >> 20),
cShare );
} else { /* summarized notifications if == 2; */
DISPLAYLEVEL(2, "\rRead : %u ", (U32)(zfp.consumed >> 20));
if (fileSize != UTIL_FILESIZE_UNKNOWN)
DISPLAYLEVEL(2, "/ %u ", (U32)(fileSize >> 20));
DISPLAYLEVEL(2, "MB ==> %2.f%% ", cShare);
DELAY_NEXT_UPDATE();
}
/* adaptive mode : statistics measurement and speed correction */
if (g_adaptiveMode) {
/* check output speed */
if (zfp.currentJobID > 1) { /* only possible if nbWorkers >= 1 */
unsigned long long newlyProduced = zfp.produced - previous_zfp_update.produced;
unsigned long long newlyFlushed = zfp.flushed - previous_zfp_update.flushed;
assert(zfp.produced >= previous_zfp_update.produced);
assert(g_nbWorkers >= 1);
/* test if compression is blocked
* either because output is slow and all buffers are full
* or because input is slow and no job can start while waiting for at least one buffer to be filled.
* note : excluse starting part, since currentJobID > 1 */
if ( (zfp.consumed == previous_zfp_update.consumed) /* no data compressed : no data available, or no more buffer to compress to, OR compression is really slow (compression of a single block is slower than update rate)*/
&& (zfp.nbActiveWorkers == 0) /* confirmed : no compression ongoing */
) {
DISPLAYLEVEL(6, "all buffers full : compression stopped => slow down \n")
speedChange = slower;
}
previous_zfp_update = zfp;
if ( (newlyProduced > (newlyFlushed * 9 / 8)) /* compression produces more data than output can flush (though production can be spiky, due to work unit : (N==4)*block sizes) */
&& (flushWaiting == 0) /* flush speed was never slowed by lack of production, so it's operating at max capacity */
) {
DISPLAYLEVEL(6, "compression faster than flush (%llu > %llu), and flushed was never slowed down by lack of production => slow down \n", newlyProduced, newlyFlushed);
speedChange = slower;
}
flushWaiting = 0;
}
/* course correct only if there is at least one new job completed */
if (zfp.currentJobID > lastJobID) {
DISPLAYLEVEL(6, "compression level adaptation check \n")
/* check input speed */
if (zfp.currentJobID > g_nbWorkers+1) { /* warm up period, to fill all workers */
if (inputBlocked <= 0) {
DISPLAYLEVEL(6, "input is never blocked => input is slower than ingestion \n");
speedChange = slower;
} else if (speedChange == noChange) {
unsigned long long newlyIngested = zfp.ingested - previous_zfp_correction.ingested;
unsigned long long newlyConsumed = zfp.consumed - previous_zfp_correction.consumed;
unsigned long long newlyProduced = zfp.produced - previous_zfp_correction.produced;
unsigned long long newlyFlushed = zfp.flushed - previous_zfp_correction.flushed;
previous_zfp_correction = zfp;
assert(inputPresented > 0);
DISPLAYLEVEL(6, "input blocked %u/%u(%.2f) - ingested:%u vs %u:consumed - flushed:%u vs %u:produced \n",
inputBlocked, inputPresented, (double)inputBlocked/inputPresented*100,
(U32)newlyIngested, (U32)newlyConsumed,
(U32)newlyFlushed, (U32)newlyProduced);
if ( (inputBlocked > inputPresented / 8) /* input is waiting often, because input buffers is full : compression or output too slow */
&& (newlyFlushed * 33 / 32 > newlyProduced) /* flush everything that is produced */
&& (newlyIngested * 33 / 32 > newlyConsumed) /* input speed as fast or faster than compression speed */
) {
DISPLAYLEVEL(6, "recommend faster as in(%llu) >= (%llu)comp(%llu) <= out(%llu) \n",
newlyIngested, newlyConsumed, newlyProduced, newlyFlushed);
speedChange = faster;
}
}
inputBlocked = 0;
inputPresented = 0;
}
if (speedChange == slower) {
DISPLAYLEVEL(6, "slower speed , higher compression \n")
compressionLevel ++;
if (compressionLevel > ZSTD_maxCLevel()) compressionLevel = ZSTD_maxCLevel();
if (compressionLevel > g_maxAdaptLevel) compressionLevel = g_maxAdaptLevel;
compressionLevel += (compressionLevel == 0); /* skip 0 */
ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_compressionLevel, (unsigned)compressionLevel);
}
if (speedChange == faster) {
DISPLAYLEVEL(6, "faster speed , lighter compression \n")
compressionLevel --;
if (compressionLevel < g_minAdaptLevel) compressionLevel = g_minAdaptLevel;
compressionLevel -= (compressionLevel == 0); /* skip 0 */
ZSTD_CCtx_setParameter(ress.cctx, ZSTD_p_compressionLevel, (unsigned)compressionLevel);
}
speedChange = noChange;
lastJobID = zfp.currentJobID;
} /* if (zfp.currentJobID > lastJobID) */
} /* if (g_adaptiveMode) */
} /* if (READY_FOR_UPDATE()) */
} /* while ((inBuff.pos != inBuff.size) */
} while (directive != ZSTD_e_end);
if (ferror(srcFile)) {
EXM_THROW(26, "Read error : I/O error");
}
if (fileSize != UTIL_FILESIZE_UNKNOWN && *readsize != fileSize) {
EXM_THROW(27, "Read error : Incomplete read : %llu / %llu B",
(unsigned long long)*readsize, (unsigned long long)fileSize);
}
return compressedfilesize;