145 строки
2.8 KiB
C
145 строки
2.8 KiB
C
|
/*
|
||
|
|
* Compile with:
|
||
|
|
* cc -I/usr/local/include -o event-test event-test.c -L/usr/local/lib -levent
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef HAVE_SYS_TYPES_H
|
||
|
|
#include <sys/types.h>
|
||
|
|
#endif
|
||
|
|
#include <sys/stat.h>
|
||
|
|
#ifndef WIN32
|
||
|
|
#ifdef HAVE_SYS_QUEUE_H
|
||
|
|
#include <sys/queue.h>
|
||
|
|
#endif
|
||
|
|
#ifdef HAVE_UNISTD_H
|
||
|
|
#include <unistd.h>
|
||
|
|
#endif
|
||
|
|
#ifdef HAVE_SYS_TIME_H
|
||
|
|
#include <sys/time.h>
|
||
|
|
#endif
|
||
|
|
#else
|
||
|
|
#include <windows.h>
|
||
|
|
#endif
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <errno.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
|
||
|
|
#include <opal/event/event.h>
|
||
|
|
|
||
|
|
static void
|
||
|
|
fifo_read(int fd, short event, void *arg)
|
||
|
|
{
|
||
|
|
char buf[255];
|
||
|
|
int len;
|
||
|
|
struct opal_event *ev = arg;
|
||
|
|
#ifdef WIN32
|
||
|
|
DWORD dwBytesRead;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Reschedule this event */
|
||
|
|
opal_event_add(ev, NULL);
|
||
|
|
|
||
|
|
fprintf(stderr, "fifo_read called with fd: %d, event: %d, arg: %p\n",
|
||
|
|
fd, event, arg);
|
||
|
|
#ifdef WIN32
|
||
|
|
len = ReadFile((HANDLE)fd, buf, sizeof(buf) - 1, &dwBytesRead, NULL);
|
||
|
|
|
||
|
|
/* Check for end of file. */
|
||
|
|
if(len && dwBytesRead == 0) {
|
||
|
|
fprintf(stderr, "End Of File");
|
||
|
|
opal_event_del(ev);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
buf[dwBytesRead + 1] = '\0';
|
||
|
|
#else
|
||
|
|
len = read(fd, buf, sizeof(buf) - 1);
|
||
|
|
|
||
|
|
if (len == -1) {
|
||
|
|
perror("read");
|
||
|
|
return;
|
||
|
|
} else if (len == 0) {
|
||
|
|
fprintf(stderr, "Connection closed\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
buf[len] = '\0';
|
||
|
|
#endif
|
||
|
|
fprintf(stdout, "Read: %s\n", buf);
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
main (int argc, char **argv)
|
||
|
|
{
|
||
|
|
struct opal_event evfifo;
|
||
|
|
#ifdef WIN32
|
||
|
|
HANDLE socket;
|
||
|
|
// Open a file.
|
||
|
|
socket = CreateFile("test.txt", // open File
|
||
|
|
GENERIC_READ, // open for reading
|
||
|
|
0, // do not share
|
||
|
|
NULL, // no security
|
||
|
|
OPEN_EXISTING, // existing file only
|
||
|
|
FILE_ATTRIBUTE_NORMAL, // normal file
|
||
|
|
NULL); // no attr. template
|
||
|
|
|
||
|
|
if(socket == INVALID_HANDLE_VALUE)
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
#else
|
||
|
|
struct stat st;
|
||
|
|
char *fifo = "event.fifo";
|
||
|
|
int socket;
|
||
|
|
|
||
|
|
if (lstat (fifo, &st) == 0) {
|
||
|
|
if ((st.st_mode & S_IFMT) == S_IFREG) {
|
||
|
|
errno = EEXIST;
|
||
|
|
perror("lstat");
|
||
|
|
exit (1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
unlink (fifo);
|
||
|
|
if (mkfifo (fifo, 0600) == -1) {
|
||
|
|
perror("mkfifo");
|
||
|
|
exit (1);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Linux pipes are broken, we need O_RDWR instead of O_RDONLY */
|
||
|
|
#ifdef __linux
|
||
|
|
socket = open (fifo, O_RDWR | O_NONBLOCK, 0);
|
||
|
|
#else
|
||
|
|
socket = open (fifo, O_RDONLY | O_NONBLOCK, 0);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (socket == -1) {
|
||
|
|
perror("open");
|
||
|
|
exit (1);
|
||
|
|
}
|
||
|
|
|
||
|
|
fprintf(stderr, "Write data to %s\n", fifo);
|
||
|
|
#endif
|
||
|
|
/* Initalize the event library */
|
||
|
|
opal_event_init();
|
||
|
|
|
||
|
|
/* Initalize one event */
|
||
|
|
#ifdef WIN32
|
||
|
|
opal_event_set(&evfifo, (int)socket, OPAL_EV_READ, fifo_read, &evfifo);
|
||
|
|
#else
|
||
|
|
opal_event_set(&evfifo, socket, OPAL_EV_READ, fifo_read, &evfifo);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Add it to the active events, without a timeout */
|
||
|
|
opal_event_add(&evfifo, NULL);
|
||
|
|
|
||
|
|
opal_event_dispatch();
|
||
|
|
#ifdef WIN32
|
||
|
|
CloseHandle(socket);
|
||
|
|
#endif
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|