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/*
* Copyright (c) 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.
*/
#include "zstdcli_trace.h"
#include <stdio.h>
#include <stdlib.h>
#include "timefn.h"
#include "util.h"
#define ZSTD_STATIC_LINKING_ONLY
#include "../lib/zstd.h"
/* We depend on the trace header to avoid duplicating the ZSTD_trace struct.
* But, we check the version so it is compatible with dynamic linking.
*/
#include "../lib/common/zstd_trace.h"
/* We only use macros from threading.h so it is compatible with dynamic linking */
#include "../lib/common/threading.h"
#if ZSTD_TRACE
static FILE* g_traceFile = NULL;
static int g_mutexInit = 0;
static ZSTD_pthread_mutex_t g_mutex;
static UTIL_time_t g_enableTime = UTIL_TIME_INITIALIZER;
void TRACE_enable(char const* filename)
{
int const writeHeader = !UTIL_isRegularFile(filename);
if (g_traceFile)
fclose(g_traceFile);
g_traceFile = fopen(filename, "a");
if (g_traceFile && writeHeader) {
/* Fields:
* algorithm
* version
* method
* streaming
* level
* workers
* dictionary size
* uncompressed size
* compressed size
* duration nanos
* compression ratio
* speed MB/s
*/
fprintf(g_traceFile, "Algorithm, Version, Method, Mode, Level, Workers, Dictionary Size, Uncompressed Size, Compressed Size, Duration Nanos, Compression Ratio, Speed MB/s\n");
}
g_enableTime = UTIL_getTime();
if (!g_mutexInit) {
if (!ZSTD_pthread_mutex_init(&g_mutex, NULL)) {
g_mutexInit = 1;
} else {
TRACE_finish();
}
}
}
void TRACE_finish(void)
{
if (g_traceFile) {
fclose(g_traceFile);
}
g_traceFile = NULL;
if (g_mutexInit) {
ZSTD_pthread_mutex_destroy(&g_mutex);
g_mutexInit = 0;
}
}
static void TRACE_log(char const* method, PTime duration, ZSTD_Trace const* trace)
{
int level = 0;
int workers = 0;
double const ratio = (double)trace->uncompressedSize / (double)trace->compressedSize;
double const speed = ((double)trace->uncompressedSize * 1000) / (double)duration;
if (trace->params) {
ZSTD_CCtxParams_getParameter(trace->params, ZSTD_c_compressionLevel, &level);
ZSTD_CCtxParams_getParameter(trace->params, ZSTD_c_nbWorkers, &workers);
}
assert(g_traceFile != NULL);
ZSTD_pthread_mutex_lock(&g_mutex);
/* Fields:
* algorithm
* version
* method
* streaming
* level
* workers
* dictionary size
* uncompressed size
* compressed size
* duration nanos
* compression ratio
* speed MB/s
*/
fprintf(g_traceFile,
"zstd, %u, %s, %s, %d, %d, %llu, %llu, %llu, %llu, %.2f, %.2f\n",
trace->version,
method,
trace->streaming ? "streaming" : "single-pass",
level,
workers,
(unsigned long long)trace->dictionarySize,
(unsigned long long)trace->uncompressedSize,
(unsigned long long)trace->compressedSize,
(unsigned long long)duration,
ratio,
speed);
ZSTD_pthread_mutex_unlock(&g_mutex);
}
/**
* These symbols override the weak symbols provided by the library.
*/
ZSTD_TraceCtx ZSTD_trace_compress_begin(ZSTD_CCtx const* cctx)
{
(void)cctx;
if (g_traceFile == NULL)
return 0;
return (ZSTD_TraceCtx)UTIL_clockSpanNano(g_enableTime);
}
void ZSTD_trace_compress_end(ZSTD_TraceCtx ctx, ZSTD_Trace const* trace)
{
PTime const beginNanos = (PTime)ctx;
PTime const endNanos = UTIL_clockSpanNano(g_enableTime);
PTime const durationNanos = endNanos > beginNanos ? endNanos - beginNanos : 0;
assert(g_traceFile != NULL);
assert(trace->version == ZSTD_VERSION_NUMBER); /* CLI version must match. */
TRACE_log("compress", durationNanos, trace);
}
ZSTD_TraceCtx ZSTD_trace_decompress_begin(ZSTD_DCtx const* dctx)
{
(void)dctx;
if (g_traceFile == NULL)
return 0;
return (ZSTD_TraceCtx)UTIL_clockSpanNano(g_enableTime);
}
void ZSTD_trace_decompress_end(ZSTD_TraceCtx ctx, ZSTD_Trace const* trace)
{
PTime const beginNanos = (PTime)ctx;
PTime const endNanos = UTIL_clockSpanNano(g_enableTime);
PTime const durationNanos = endNanos > beginNanos ? endNanos - beginNanos : 0;
assert(g_traceFile != NULL);
assert(trace->version == ZSTD_VERSION_NUMBER); /* CLI version must match. */
TRACE_log("decompress", durationNanos, trace);
}
#else /* ZSTD_TRACE */
void TRACE_enable(char const* filename)
{
(void)filename;
}
void TRACE_finish(void) {}
#endif /* ZSTD_TRACE */
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