kc3-lang/libevent/test/test-changelist.c

• Show log

  Commit

• Hash : c0bf63ce
  Author :
  Date : 2010-12-02T14:13:33
  

  tests: Use relative includes ("") instead of system includes (<>)
  

Download

• test/test-changelist.c

• /*
   *  based on test-eof.c
   */
  
  #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;
  	int	err;
  
  	wVersionRequested = MAKEWORD(2, 2);
  
  	err = 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);
  
  	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;
  }
  
  

Download