This source file includes following definitions.
- read_cb
- run_once
- main
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28 #include "event2/event-config.h"
29
30 #include <sys/types.h>
31 #include <sys/stat.h>
32 #ifdef _EVENT_HAVE_SYS_TIME_H
33 #include <sys/time.h>
34 #endif
35 #ifdef WIN32
36 #define WIN32_LEAN_AND_MEAN
37 #include <windows.h>
38 #else
39 #include <sys/socket.h>
40 #include <sys/resource.h>
41 #endif
42 #include <signal.h>
43 #include <fcntl.h>
44 #include <stdlib.h>
45 #include <stdio.h>
46 #include <string.h>
47 #ifdef _EVENT_HAVE_UNISTD_H
48 #include <unistd.h>
49 #endif
50 #include <errno.h>
51
52 #include <event.h>
53 #include <evutil.h>
54
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61
62 static int fired;
63 static evutil_socket_t *pipes;
64 static struct event *events;
65
66 static void
67 read_cb(evutil_socket_t fd, short which, void *arg)
68 {
69 char ch;
70 evutil_socket_t sock = (evutil_socket_t)(ev_intptr_t)arg;
71
72 recv(fd, &ch, sizeof(ch), 0);
73 if (sock >= 0) {
74 if (send(sock, "e", 1, 0) < 0)
75 perror("send");
76 }
77 fired++;
78 }
79
80 static struct timeval *
81 run_once(int num_pipes)
82 {
83 int i;
84 evutil_socket_t *cp;
85 static struct timeval ts, te, tv_timeout;
86
87 events = calloc(num_pipes, sizeof(struct event));
88 pipes = calloc(num_pipes * 2, sizeof(evutil_socket_t));
89
90 if (events == NULL || pipes == NULL) {
91 perror("malloc");
92 exit(1);
93 }
94
95 for (cp = pipes, i = 0; i < num_pipes; i++, cp += 2) {
96 if (evutil_socketpair(AF_UNIX, SOCK_STREAM, 0, cp) == -1) {
97 perror("socketpair");
98 exit(1);
99 }
100 }
101
102
103 evutil_gettimeofday(&ts, NULL);
104
105
106 evutil_timerclear(&tv_timeout);
107 tv_timeout.tv_sec = 60;
108
109 for (cp = pipes, i = 0; i < num_pipes; i++, cp += 2) {
110 evutil_socket_t fd = i < num_pipes - 1 ? cp[3] : -1;
111 event_set(&events[i], cp[0], EV_READ, read_cb,
112 (void *)(ev_intptr_t)fd);
113 event_add(&events[i], &tv_timeout);
114 }
115
116 fired = 0;
117
118
119 if (send(pipes[1], "e", 1, 0) < 0)
120 perror("send");
121
122 event_dispatch();
123
124 evutil_gettimeofday(&te, NULL);
125 evutil_timersub(&te, &ts, &te);
126
127 for (cp = pipes, i = 0; i < num_pipes; i++, cp += 2) {
128 event_del(&events[i]);
129 close(cp[0]);
130 close(cp[1]);
131 }
132
133 free(pipes);
134 free(events);
135
136 return (&te);
137 }
138
139 int
140 main(int argc, char **argv)
141 {
142 #ifndef WIN32
143 struct rlimit rl;
144 #endif
145 int i, c;
146 struct timeval *tv;
147
148 int num_pipes = 100;
149 while ((c = getopt(argc, argv, "n:")) != -1) {
150 switch (c) {
151 case 'n':
152 num_pipes = atoi(optarg);
153 break;
154 default:
155 fprintf(stderr, "Illegal argument \"%c\"\n", c);
156 exit(1);
157 }
158 }
159
160 #ifndef WIN32
161 rl.rlim_cur = rl.rlim_max = num_pipes * 2 + 50;
162 if (setrlimit(RLIMIT_NOFILE, &rl) == -1) {
163 perror("setrlimit");
164 exit(1);
165 }
166 #endif
167
168 event_init();
169
170 for (i = 0; i < 25; i++) {
171 tv = run_once(num_pipes);
172 if (tv == NULL)
173 exit(1);
174 fprintf(stdout, "%ld\n",
175 tv->tv_sec * 1000000L + tv->tv_usec);
176 }
177
178 exit(0);
179 }