diff options
Diffstat (limited to 'man2/poll.2')
| -rw-r--r-- | man2/poll.2 | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/man2/poll.2 b/man2/poll.2 index 4e26e62d4..0b834306a 100644 --- a/man2/poll.2 +++ b/man2/poll.2 @@ -264,7 +264,7 @@ executing the following calls: .EX sigset_t origmask; int timeout; - +\& timeout = (tmo_p == NULL) ? \-1 : (tmo_p\->tv_sec * 1000 + tmo_p\->tv_nsec / 1000000); pthread_sigmask(SIG_SETMASK, &sigmask, &origmask); @@ -506,7 +506,7 @@ About to poll() Ready: 1 fd=3; events: POLLIN POLLHUP read 6 bytes: ccccc - +\& About to poll() Ready: 1 fd=3; events: POLLHUP @@ -548,7 +548,7 @@ at which point the file descriptor was closed and the program terminated. .\" SRC BEGIN (poll_input.c) .EX /* poll_input.c - +\& Licensed under GNU General Public License v2 or later. */ #include <fcntl.h> @@ -556,10 +556,10 @@ at which point the file descriptor was closed and the program terminated. #include <stdio.h> #include <stdlib.h> #include <unistd.h> - +\& #define errExit(msg) do { perror(msg); exit(EXIT_FAILURE); \e } while (0) - +\& int main(int argc, char *argv[]) { @@ -568,49 +568,49 @@ main(int argc, char *argv[]) nfds_t num_open_fds, nfds; ssize_t s; struct pollfd *pfds; - +\& if (argc < 2) { fprintf(stderr, "Usage: %s file...\en", argv[0]); exit(EXIT_FAILURE); } - +\& num_open_fds = nfds = argc \- 1; pfds = calloc(nfds, sizeof(struct pollfd)); if (pfds == NULL) errExit("malloc"); - +\& /* Open each file on command line, and add it to \[aq]pfds\[aq] array. */ - +\& for (nfds_t j = 0; j < nfds; j++) { pfds[j].fd = open(argv[j + 1], O_RDONLY); if (pfds[j].fd == \-1) errExit("open"); - +\& printf("Opened \e"%s\e" on fd %d\en", argv[j + 1], pfds[j].fd); - +\& pfds[j].events = POLLIN; } - +\& /* Keep calling poll() as long as at least one file descriptor is open. */ - +\& while (num_open_fds > 0) { printf("About to poll()\en"); ready = poll(pfds, nfds, \-1); if (ready == \-1) errExit("poll"); - +\& printf("Ready: %d\en", ready); - +\& /* Deal with array returned by poll(). */ - +\& for (nfds_t j = 0; j < nfds; j++) { if (pfds[j].revents != 0) { printf(" fd=%d; events: %s%s%s\en", pfds[j].fd, (pfds[j].revents & POLLIN) ? "POLLIN " : "", (pfds[j].revents & POLLHUP) ? "POLLHUP " : "", (pfds[j].revents & POLLERR) ? "POLLERR " : ""); - +\& if (pfds[j].revents & POLLIN) { s = read(pfds[j].fd, buf, sizeof(buf)); if (s == \-1) @@ -626,7 +626,7 @@ main(int argc, char *argv[]) } } } - +\& printf("All file descriptors closed; bye\en"); exit(EXIT_SUCCESS); } |