The Tor Browser: ipc/chromium/src/third_party/libevent/test/test-changelist.c@6474c204b198 (annotated)

ipc/chromium/src/third_party/libevent/test/test-changelist.c@6474c204b198 (annotated)

ipc/chromium/src/third_party/libevent/test/test-changelist.c

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
  * Copyright (c) 2010-2012 Niels Provos and Nick Mathewson
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. The name of the author may not be used to endorse or promote products
  *    derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 #include "event2/event-config.h"
 #ifdef WIN32
 #include <winsock2.h>
 #include <windows.h>
 #else
 #include <unistd.h>
 #endif
 #include <sys/types.h>
 #include <sys/stat.h>
 #ifdef _EVENT_HAVE_SYS_TIME_H
 #include <sys/time.h>
 #endif
 #ifdef _EVENT_HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
 #endif
 #include <fcntl.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
 #include "event2/event.h"
 #include "event2/util.h"
 #include <time.h>
 struct cpu_usage_timer {
 #ifdef WIN32
 	HANDLE thread;
 	FILETIME usertimeBegin;
 	FILETIME kerneltimeBegin;
 #else
 	clock_t ticksBegin;
 #endif
 	struct timeval timeBegin;
 };
 static void
 start_cpu_usage_timer(struct cpu_usage_timer *timer)
 {
 #ifdef WIN32
 	int r;
 	FILETIME createtime, exittime;
 	timer->thread = GetCurrentThread();
 	r = GetThreadTimes(timer->thread, &createtime, &exittime,
 	    &timer->usertimeBegin, &timer->kerneltimeBegin);
 	if (r==0) printf("GetThreadTimes failed.");
 #else
 	timer->ticksBegin = clock();
 #endif
 	evutil_gettimeofday(&timer->timeBegin, NULL);
 }
 #ifdef WIN32
 static ev_int64_t
 filetime_to_100nsec(const FILETIME *ft)
 {
 	/* Number of 100-nanosecond units */
 	ev_int64_t n = ft->dwHighDateTime;
 	n <<= 32;
 	n += ft->dwLowDateTime;
 	return n;
 }
 static double
 filetime_diff(const FILETIME *ftStart, const FILETIME *ftEnd)
 {
 	ev_int64_t s, e, diff;
 	double r;
 	s = filetime_to_100nsec(ftStart);
 	e = filetime_to_100nsec(ftEnd);
 	diff = e - s;
 	r = (double) diff;
 	return r / 1.0e7;
 }
 #endif
 static void
 get_cpu_usage(struct cpu_usage_timer *timer, double *secElapsedOut,
     double *secUsedOut, double *usageOut)
 {
 #ifdef WIN32
 	double usertime_seconds, kerneltime_seconds;
 	FILETIME createtime, exittime, usertimeEnd, kerneltimeEnd;
 	int r;
 #else
 	clock_t ticksEnd;
 #endif
 	struct timeval timeEnd, timeDiff;
 	double secondsPassed, secondsUsed;
 #ifdef WIN32
 	r = GetThreadTimes(timer->thread, &createtime, &exittime,
 	    &usertimeEnd, &kerneltimeEnd);
 	if (r==0) printf("GetThreadTimes failed.");
 	usertime_seconds = filetime_diff(&timer->usertimeBegin, &usertimeEnd);
 	kerneltime_seconds = filetime_diff(&timer->kerneltimeBegin, &kerneltimeEnd);
 	secondsUsed = kerneltime_seconds + usertime_seconds;
 #else
 	ticksEnd = clock();
 	secondsUsed = (ticksEnd - timer->ticksBegin) / (double)CLOCKS_PER_SEC;
 #endif
 	evutil_gettimeofday(&timeEnd, NULL);
 	evutil_timersub(&timeEnd, &timer->timeBegin, &timeDiff);
 	secondsPassed = timeDiff.tv_sec + (timeDiff.tv_usec / 1.0e6);
 	*secElapsedOut = secondsPassed;
 	*secUsedOut = secondsUsed;
 	*usageOut = secondsUsed / secondsPassed;
 }
 static void
 write_cb(evutil_socket_t fd, short event, void *arg)
 {
 	printf("write callback. should only see this once\n");
 	/* got what we want remove the event */
 	event_del(*(struct event**)arg);
 	/* opps changed my mind add it back again */
 	event_add(*(struct event**)arg,NULL);
 	/* not a good day for decisiveness, I really didn't want it after all */
 	event_del(*(struct event**)arg);
 }
 static void
 timeout_cb(evutil_socket_t fd, short event, void *arg)
 {
 	printf("timeout fired, time to end test\n");
 	event_del(*(struct event**)arg);
 	return;
 }
 int
 main(int argc, char **argv)
 {
 	struct event* ev;
 	struct event* timeout;
 	struct event_base* base;
 	evutil_socket_t pair[2];
 	struct timeval tv;
 	struct cpu_usage_timer timer;
 	double usage, secPassed, secUsed;
 #ifdef WIN32
 	WORD wVersionRequested;
 	WSADATA wsaData;
 	wVersionRequested = MAKEWORD(2, 2);
 	(void) WSAStartup(wVersionRequested, &wsaData);
 #endif
 	if (evutil_socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == -1)
 		return (1);
 	/* Initalize the event library */
 	base = event_base_new();
 	/* Initalize a timeout to terminate the test */
 	timeout = evtimer_new(base,timeout_cb,&timeout);
 	/* and watch for writability on one end of the pipe */
 	ev = event_new(base,pair[1],EV_WRITE | EV_PERSIST, write_cb, &ev);
 	tv.tv_sec  = 5;
 	tv.tv_usec = 0;
 	evtimer_add(timeout, &tv);
 	event_add(ev, NULL);
 	start_cpu_usage_timer(&timer);
 	event_base_dispatch(base);
 	event_free(ev);
 	event_free(timeout);
 	event_base_free(base);
 	get_cpu_usage(&timer, &secPassed, &secUsed, &usage);
 	/* attempt to calculate our cpu usage over the test should be
 	   virtually nil */
 	printf("usec used=%d, usec passed=%d, cpu usage=%.2f%%\n",
 	    (int)(secUsed*1e6),
 	    (int)(secPassed*1e6),
 	    usage*100);
 	if (usage > 50.0) /* way too high */
 	  return 1;
 	return 0;
 }

The Tor Browser / annotate

ipc/chromium/src/third_party/libevent/test/test-changelist.c@6474c204b198 (annotated)

ipc/chromium/src/third_party/libevent/test/test-changelist.c