1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/ipc/chromium/src/third_party/libevent/test/test-changelist.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,223 @@
1.4 +/*
1.5 + * Copyright (c) 2010-2012 Niels Provos and Nick Mathewson
1.6 + *
1.7 + * Redistribution and use in source and binary forms, with or without
1.8 + * modification, are permitted provided that the following conditions
1.9 + * are met:
1.10 + * 1. Redistributions of source code must retain the above copyright
1.11 + * notice, this list of conditions and the following disclaimer.
1.12 + * 2. Redistributions in binary form must reproduce the above copyright
1.13 + * notice, this list of conditions and the following disclaimer in the
1.14 + * documentation and/or other materials provided with the distribution.
1.15 + * 3. The name of the author may not be used to endorse or promote products
1.16 + * derived from this software without specific prior written permission.
1.17 + *
1.18 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
1.19 + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
1.20 + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
1.21 + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
1.22 + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
1.23 + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
1.24 + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
1.25 + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
1.26 + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
1.27 + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.28 + */
1.29 +
1.30 +#include "event2/event-config.h"
1.31 +
1.32 +#ifdef WIN32
1.33 +#include <winsock2.h>
1.34 +#include <windows.h>
1.35 +#else
1.36 +#include <unistd.h>
1.37 +#endif
1.38 +#include <sys/types.h>
1.39 +#include <sys/stat.h>
1.40 +#ifdef _EVENT_HAVE_SYS_TIME_H
1.41 +#include <sys/time.h>
1.42 +#endif
1.43 +
1.44 +#ifdef _EVENT_HAVE_SYS_SOCKET_H
1.45 +#include <sys/socket.h>
1.46 +#endif
1.47 +#include <fcntl.h>
1.48 +#include <stdlib.h>
1.49 +#include <stdio.h>
1.50 +#include <string.h>
1.51 +#include <errno.h>
1.52 +
1.53 +#include "event2/event.h"
1.54 +#include "event2/util.h"
1.55 +#include <time.h>
1.56 +
1.57 +struct cpu_usage_timer {
1.58 +#ifdef WIN32
1.59 + HANDLE thread;
1.60 + FILETIME usertimeBegin;
1.61 + FILETIME kerneltimeBegin;
1.62 +#else
1.63 + clock_t ticksBegin;
1.64 +#endif
1.65 + struct timeval timeBegin;
1.66 +};
1.67 +static void
1.68 +start_cpu_usage_timer(struct cpu_usage_timer *timer)
1.69 +{
1.70 +#ifdef WIN32
1.71 + int r;
1.72 + FILETIME createtime, exittime;
1.73 + timer->thread = GetCurrentThread();
1.74 + r = GetThreadTimes(timer->thread, &createtime, &exittime,
1.75 + &timer->usertimeBegin, &timer->kerneltimeBegin);
1.76 + if (r==0) printf("GetThreadTimes failed.");
1.77 +#else
1.78 + timer->ticksBegin = clock();
1.79 +#endif
1.80 +
1.81 + evutil_gettimeofday(&timer->timeBegin, NULL);
1.82 +}
1.83 +#ifdef WIN32
1.84 +static ev_int64_t
1.85 +filetime_to_100nsec(const FILETIME *ft)
1.86 +{
1.87 + /* Number of 100-nanosecond units */
1.88 + ev_int64_t n = ft->dwHighDateTime;
1.89 + n <<= 32;
1.90 + n += ft->dwLowDateTime;
1.91 + return n;
1.92 +}
1.93 +static double
1.94 +filetime_diff(const FILETIME *ftStart, const FILETIME *ftEnd)
1.95 +{
1.96 + ev_int64_t s, e, diff;
1.97 + double r;
1.98 + s = filetime_to_100nsec(ftStart);
1.99 + e = filetime_to_100nsec(ftEnd);
1.100 + diff = e - s;
1.101 + r = (double) diff;
1.102 + return r / 1.0e7;
1.103 +}
1.104 +#endif
1.105 +
1.106 +static void
1.107 +get_cpu_usage(struct cpu_usage_timer *timer, double *secElapsedOut,
1.108 + double *secUsedOut, double *usageOut)
1.109 +{
1.110 +#ifdef WIN32
1.111 + double usertime_seconds, kerneltime_seconds;
1.112 + FILETIME createtime, exittime, usertimeEnd, kerneltimeEnd;
1.113 + int r;
1.114 +#else
1.115 + clock_t ticksEnd;
1.116 +#endif
1.117 + struct timeval timeEnd, timeDiff;
1.118 + double secondsPassed, secondsUsed;
1.119 +
1.120 +#ifdef WIN32
1.121 + r = GetThreadTimes(timer->thread, &createtime, &exittime,
1.122 + &usertimeEnd, &kerneltimeEnd);
1.123 + if (r==0) printf("GetThreadTimes failed.");
1.124 + usertime_seconds = filetime_diff(&timer->usertimeBegin, &usertimeEnd);
1.125 + kerneltime_seconds = filetime_diff(&timer->kerneltimeBegin, &kerneltimeEnd);
1.126 + secondsUsed = kerneltime_seconds + usertime_seconds;
1.127 +#else
1.128 + ticksEnd = clock();
1.129 + secondsUsed = (ticksEnd - timer->ticksBegin) / (double)CLOCKS_PER_SEC;
1.130 +#endif
1.131 + evutil_gettimeofday(&timeEnd, NULL);
1.132 + evutil_timersub(&timeEnd, &timer->timeBegin, &timeDiff);
1.133 + secondsPassed = timeDiff.tv_sec + (timeDiff.tv_usec / 1.0e6);
1.134 +
1.135 + *secElapsedOut = secondsPassed;
1.136 + *secUsedOut = secondsUsed;
1.137 + *usageOut = secondsUsed / secondsPassed;
1.138 +}
1.139 +
1.140 +static void
1.141 +write_cb(evutil_socket_t fd, short event, void *arg)
1.142 +{
1.143 + printf("write callback. should only see this once\n");
1.144 +
1.145 + /* got what we want remove the event */
1.146 + event_del(*(struct event**)arg);
1.147 +
1.148 + /* opps changed my mind add it back again */
1.149 + event_add(*(struct event**)arg,NULL);
1.150 +
1.151 + /* not a good day for decisiveness, I really didn't want it after all */
1.152 + event_del(*(struct event**)arg);
1.153 +
1.154 +}
1.155 +
1.156 +static void
1.157 +timeout_cb(evutil_socket_t fd, short event, void *arg)
1.158 +{
1.159 + printf("timeout fired, time to end test\n");
1.160 + event_del(*(struct event**)arg);
1.161 + return;
1.162 +}
1.163 +
1.164 +int
1.165 +main(int argc, char **argv)
1.166 +{
1.167 + struct event* ev;
1.168 + struct event* timeout;
1.169 + struct event_base* base;
1.170 +
1.171 + evutil_socket_t pair[2];
1.172 + struct timeval tv;
1.173 + struct cpu_usage_timer timer;
1.174 +
1.175 + double usage, secPassed, secUsed;
1.176 +
1.177 +#ifdef WIN32
1.178 + WORD wVersionRequested;
1.179 + WSADATA wsaData;
1.180 +
1.181 + wVersionRequested = MAKEWORD(2, 2);
1.182 +
1.183 + (void) WSAStartup(wVersionRequested, &wsaData);
1.184 +#endif
1.185 + if (evutil_socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == -1)
1.186 + return (1);
1.187 +
1.188 + /* Initalize the event library */
1.189 + base = event_base_new();
1.190 +
1.191 + /* Initalize a timeout to terminate the test */
1.192 + timeout = evtimer_new(base,timeout_cb,&timeout);
1.193 + /* and watch for writability on one end of the pipe */
1.194 + ev = event_new(base,pair[1],EV_WRITE | EV_PERSIST, write_cb, &ev);
1.195 +
1.196 + tv.tv_sec = 5;
1.197 + tv.tv_usec = 0;
1.198 +
1.199 + evtimer_add(timeout, &tv);
1.200 +
1.201 + event_add(ev, NULL);
1.202 +
1.203 + start_cpu_usage_timer(&timer);
1.204 +
1.205 + event_base_dispatch(base);
1.206 +
1.207 + event_free(ev);
1.208 + event_free(timeout);
1.209 + event_base_free(base);
1.210 +
1.211 + get_cpu_usage(&timer, &secPassed, &secUsed, &usage);
1.212 +
1.213 + /* attempt to calculate our cpu usage over the test should be
1.214 + virtually nil */
1.215 +
1.216 + printf("usec used=%d, usec passed=%d, cpu usage=%.2f%%\n",
1.217 + (int)(secUsed*1e6),
1.218 + (int)(secPassed*1e6),
1.219 + usage*100);
1.220 +
1.221 + if (usage > 50.0) /* way too high */
1.222 + return 1;
1.223 +
1.224 + return 0;
1.225 +}
1.226 +
