| James Robinson | 646469d | 2014-10-03 15:33:28 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Compile with: |
| 3 | * cc -I/usr/local/include -o event-test event-test.c -L/usr/local/lib -levent |
| 4 | */ |
| 5 | |
| 6 | #ifdef HAVE_CONFIG_H |
| 7 | #include "config.h" |
| 8 | #endif |
| 9 | |
| 10 | #include <sys/types.h> |
| 11 | #include <sys/stat.h> |
| 12 | #ifndef WIN32 |
| 13 | #include <sys/queue.h> |
| 14 | #include <unistd.h> |
| 15 | #include <sys/time.h> |
| 16 | #else |
| 17 | #include <windows.h> |
| 18 | #endif |
| 19 | #include <fcntl.h> |
| 20 | #include <stdlib.h> |
| 21 | #include <stdio.h> |
| 22 | #include <string.h> |
| 23 | #include <errno.h> |
| 24 | |
| 25 | #include <event.h> |
| 26 | |
| 27 | static void |
| 28 | fifo_read(int fd, short event, void *arg) |
| 29 | { |
| 30 | char buf[255]; |
| 31 | int len; |
| 32 | struct event *ev = arg; |
| 33 | #ifdef WIN32 |
| 34 | DWORD dwBytesRead; |
| 35 | #endif |
| 36 | |
| 37 | /* Reschedule this event */ |
| 38 | event_add(ev, NULL); |
| 39 | |
| 40 | fprintf(stderr, "fifo_read called with fd: %d, event: %d, arg: %p\n", |
| 41 | fd, event, arg); |
| 42 | #ifdef WIN32 |
| 43 | len = ReadFile((HANDLE)fd, buf, sizeof(buf) - 1, &dwBytesRead, NULL); |
| 44 | |
| 45 | // Check for end of file. |
| 46 | if(len && dwBytesRead == 0) { |
| 47 | fprintf(stderr, "End Of File"); |
| 48 | event_del(ev); |
| 49 | return; |
| 50 | } |
| 51 | |
| 52 | buf[dwBytesRead] = '\0'; |
| 53 | #else |
| 54 | len = read(fd, buf, sizeof(buf) - 1); |
| 55 | |
| 56 | if (len == -1) { |
| 57 | perror("read"); |
| 58 | return; |
| 59 | } else if (len == 0) { |
| 60 | fprintf(stderr, "Connection closed\n"); |
| 61 | return; |
| 62 | } |
| 63 | |
| 64 | buf[len] = '\0'; |
| 65 | #endif |
| 66 | fprintf(stdout, "Read: %s\n", buf); |
| 67 | } |
| 68 | |
| 69 | int |
| 70 | main (int argc, char **argv) |
| 71 | { |
| 72 | struct event evfifo; |
| 73 | #ifdef WIN32 |
| 74 | HANDLE socket; |
| 75 | // Open a file. |
| 76 | socket = CreateFile("test.txt", // open File |
| 77 | GENERIC_READ, // open for reading |
| 78 | 0, // do not share |
| 79 | NULL, // no security |
| 80 | OPEN_EXISTING, // existing file only |
| 81 | FILE_ATTRIBUTE_NORMAL, // normal file |
| 82 | NULL); // no attr. template |
| 83 | |
| 84 | if(socket == INVALID_HANDLE_VALUE) |
| 85 | return 1; |
| 86 | |
| 87 | #else |
| 88 | struct stat st; |
| 89 | const char *fifo = "event.fifo"; |
| 90 | int socket; |
| 91 | |
| 92 | if (lstat (fifo, &st) == 0) { |
| 93 | if ((st.st_mode & S_IFMT) == S_IFREG) { |
| 94 | errno = EEXIST; |
| 95 | perror("lstat"); |
| 96 | exit (1); |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | unlink (fifo); |
| 101 | if (mkfifo (fifo, 0600) == -1) { |
| 102 | perror("mkfifo"); |
| 103 | exit (1); |
| 104 | } |
| 105 | |
| 106 | /* Linux pipes are broken, we need O_RDWR instead of O_RDONLY */ |
| 107 | #ifdef __linux |
| 108 | socket = open (fifo, O_RDWR | O_NONBLOCK, 0); |
| 109 | #else |
| 110 | socket = open (fifo, O_RDONLY | O_NONBLOCK, 0); |
| 111 | #endif |
| 112 | |
| 113 | if (socket == -1) { |
| 114 | perror("open"); |
| 115 | exit (1); |
| 116 | } |
| 117 | |
| 118 | fprintf(stderr, "Write data to %s\n", fifo); |
| 119 | #endif |
| 120 | /* Initalize the event library */ |
| 121 | event_init(); |
| 122 | |
| 123 | /* Initalize one event */ |
| 124 | #ifdef WIN32 |
| 125 | event_set(&evfifo, (int)socket, EV_READ, fifo_read, &evfifo); |
| 126 | #else |
| 127 | event_set(&evfifo, socket, EV_READ, fifo_read, &evfifo); |
| 128 | #endif |
| 129 | |
| 130 | /* Add it to the active events, without a timeout */ |
| 131 | event_add(&evfifo, NULL); |
| 132 | |
| 133 | event_dispatch(); |
| 134 | #ifdef WIN32 |
| 135 | CloseHandle(socket); |
| 136 | #endif |
| 137 | return (0); |
| 138 | } |
| 139 | |
