/**

 * FreeRDP: A Remote Desktop Protocol Implementation

 * 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>

#include <freerdp/utils/stopwatch.h>

#ifdef _WIN32

LARGE_INTEGER stopwatch_freq = { 0, 0 };

#else

#include <sys/time.h>

#endif

static 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

}

STOPWATCH* stopwatch_create(void)

{

	STOPWATCH* sw;

#ifdef _WIN32

	if (stopwatch_freq.QuadPart == 0)

	{

		QueryPerformanceFrequency(&stopwatch_freq);

	}

#endif

	sw = (STOPWATCH*)malloc(sizeof(STOPWATCH));

	if (!sw)

		return NULL;

	stopwatch_reset(sw);

	return sw;

}

void stopwatch_free(STOPWATCH* stopwatch)

{

	free(stopwatch);

}

void stopwatch_start(STOPWATCH* stopwatch)

{

	stopwatch_set_time(&stopwatch->start);

	stopwatch->count++;

}

void stopwatch_stop(STOPWATCH* stopwatch)

{

	stopwatch_set_time(&stopwatch->end);

	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);

}

void stopwatch_get_elapsed_time_in_useconds(STOPWATCH* stopwatch, UINT32* sec, UINT32* usec)

{

	*sec = (UINT32)stopwatch->elapsed / 1000000;

	*usec = (UINT32)stopwatch->elapsed % 1000000;

}