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comparison: ipc/chromium/src/third_party/libevent/sample/event-test.c
ipc/chromium/src/third_party/libevent/sample/event-test.c
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| -1:000000000000 | 0:8abea17944de |
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| 1 /* | |
| 2 * XXX This sample code was once meant to show how to use the basic Libevent | |
| 3 * interfaces, but it never worked on non-Unix platforms, and some of the | |
| 4 * interfaces have changed since it was first written. It should probably | |
| 5 * be removed or replaced with something better. | |
| 6 * | |
| 7 * Compile with: | |
| 8 * cc -I/usr/local/include -o event-test event-test.c -L/usr/local/lib -levent | |
| 9 */ | |
| 10 | |
| 11 #include <event2/event-config.h> | |
| 12 | |
| 13 #include <sys/types.h> | |
| 14 #include <sys/stat.h> | |
| 15 #ifndef WIN32 | |
| 16 #include <sys/queue.h> | |
| 17 #include <unistd.h> | |
| 18 #include <sys/time.h> | |
| 19 #else | |
| 20 #include <winsock2.h> | |
| 21 #include <windows.h> | |
| 22 #endif | |
| 23 #include <fcntl.h> | |
| 24 #include <stdlib.h> | |
| 25 #include <stdio.h> | |
| 26 #include <string.h> | |
| 27 #include <errno.h> | |
| 28 | |
| 29 #include <event.h> | |
| 30 | |
| 31 static void | |
| 32 fifo_read(evutil_socket_t fd, short event, void *arg) | |
| 33 { | |
| 34 char buf[255]; | |
| 35 int len; | |
| 36 struct event *ev = arg; | |
| 37 #ifdef WIN32 | |
| 38 DWORD dwBytesRead; | |
| 39 #endif | |
| 40 | |
| 41 /* Reschedule this event */ | |
| 42 event_add(ev, NULL); | |
| 43 | |
| 44 fprintf(stderr, "fifo_read called with fd: %d, event: %d, arg: %p\n", | |
| 45 (int)fd, event, arg); | |
| 46 #ifdef WIN32 | |
| 47 len = ReadFile((HANDLE)fd, buf, sizeof(buf) - 1, &dwBytesRead, NULL); | |
| 48 | |
| 49 /* Check for end of file. */ | |
| 50 if (len && dwBytesRead == 0) { | |
| 51 fprintf(stderr, "End Of File"); | |
| 52 event_del(ev); | |
| 53 return; | |
| 54 } | |
| 55 | |
| 56 buf[dwBytesRead] = '\0'; | |
| 57 #else | |
| 58 len = read(fd, buf, sizeof(buf) - 1); | |
| 59 | |
| 60 if (len == -1) { | |
| 61 perror("read"); | |
| 62 return; | |
| 63 } else if (len == 0) { | |
| 64 fprintf(stderr, "Connection closed\n"); | |
| 65 return; | |
| 66 } | |
| 67 | |
| 68 buf[len] = '\0'; | |
| 69 #endif | |
| 70 fprintf(stdout, "Read: %s\n", buf); | |
| 71 } | |
| 72 | |
| 73 int | |
| 74 main(int argc, char **argv) | |
| 75 { | |
| 76 struct event evfifo; | |
| 77 #ifdef WIN32 | |
| 78 HANDLE socket; | |
| 79 /* Open a file. */ | |
| 80 socket = CreateFileA("test.txt", /* open File */ | |
| 81 GENERIC_READ, /* open for reading */ | |
| 82 0, /* do not share */ | |
| 83 NULL, /* no security */ | |
| 84 OPEN_EXISTING, /* existing file only */ | |
| 85 FILE_ATTRIBUTE_NORMAL, /* normal file */ | |
| 86 NULL); /* no attr. template */ | |
| 87 | |
| 88 if (socket == INVALID_HANDLE_VALUE) | |
| 89 return 1; | |
| 90 | |
| 91 #else | |
| 92 struct stat st; | |
| 93 const char *fifo = "event.fifo"; | |
| 94 int socket; | |
| 95 | |
| 96 if (lstat(fifo, &st) == 0) { | |
| 97 if ((st.st_mode & S_IFMT) == S_IFREG) { | |
| 98 errno = EEXIST; | |
| 99 perror("lstat"); | |
| 100 exit(1); | |
| 101 } | |
| 102 } | |
| 103 | |
| 104 unlink(fifo); | |
| 105 if (mkfifo(fifo, 0600) == -1) { | |
| 106 perror("mkfifo"); | |
| 107 exit(1); | |
| 108 } | |
| 109 | |
| 110 /* Linux pipes are broken, we need O_RDWR instead of O_RDONLY */ | |
| 111 #ifdef __linux | |
| 112 socket = open(fifo, O_RDWR | O_NONBLOCK, 0); | |
| 113 #else | |
| 114 socket = open(fifo, O_RDONLY | O_NONBLOCK, 0); | |
| 115 #endif | |
| 116 | |
| 117 if (socket == -1) { | |
| 118 perror("open"); | |
| 119 exit(1); | |
| 120 } | |
| 121 | |
| 122 fprintf(stderr, "Write data to %s\n", fifo); | |
| 123 #endif | |
| 124 /* Initalize the event library */ | |
| 125 event_init(); | |
| 126 | |
| 127 /* Initalize one event */ | |
| 128 #ifdef WIN32 | |
| 129 event_set(&evfifo, (evutil_socket_t)socket, EV_READ, fifo_read, &evfifo); | |
| 130 #else | |
| 131 event_set(&evfifo, socket, EV_READ, fifo_read, &evfifo); | |
| 132 #endif | |
| 133 | |
| 134 /* Add it to the active events, without a timeout */ | |
| 135 event_add(&evfifo, NULL); | |
| 136 | |
| 137 event_dispatch(); | |
| 138 #ifdef WIN32 | |
| 139 CloseHandle(socket); | |
| 140 #endif | |
| 141 return (0); | |
| 142 } | |
| 143 |
