FreeRDP/libfreerdp/utils/stopwatch.c

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/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Stopwatch Utils
*
* Copyright 2011 Stephen Erisman
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
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#include <freerdp/utils/stopwatch.h>
#ifdef _WIN32
LARGE_INTEGER stopwatch_freq = { 0, 0 };
#else
#include <sys/time.h>
#endif
void stopwatch_set_time(UINT64* usecs)
{
#ifdef _WIN32
LARGE_INTEGER perfcount;
QueryPerformanceCounter(&perfcount);
*usecs = (perfcount.QuadPart * 1000000) / stopwatch_freq.QuadPart;
#else
struct timeval tv;
gettimeofday(&tv, NULL);
*usecs = tv.tv_sec * 1000000 + tv.tv_usec;
#endif
}
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STOPWATCH* stopwatch_create()
{
STOPWATCH* sw;
#ifdef _WIN32
if (stopwatch_freq.QuadPart == 0) {
QueryPerformanceFrequency(&stopwatch_freq);
}
#endif
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sw = (STOPWATCH*) malloc(sizeof(STOPWATCH));
if (!sw)
return NULL;
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stopwatch_reset(sw);
return sw;
}
void stopwatch_free(STOPWATCH* stopwatch)
{
free(stopwatch);
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}
void stopwatch_start(STOPWATCH* stopwatch)
{
stopwatch_set_time(&stopwatch->start);
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stopwatch->count++;
}
void stopwatch_stop(STOPWATCH* stopwatch)
{
stopwatch_set_time(&stopwatch->end);
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stopwatch->elapsed += (stopwatch->end - stopwatch->start);
}
void stopwatch_reset(STOPWATCH* stopwatch)
{
stopwatch->start = 0;
stopwatch->end = 0;
stopwatch->elapsed = 0;
stopwatch->count = 0;
}
double stopwatch_get_elapsed_time_in_seconds(STOPWATCH* stopwatch)
{
return (stopwatch->elapsed/1000000.0);
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}
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void stopwatch_get_elapsed_time_in_useconds(STOPWATCH* stopwatch, UINT32* sec, UINT32* usec)
{
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*sec = (UINT32) stopwatch->elapsed / 1000000;
*usec = (UINT32) stopwatch->elapsed % 1000000;
}