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GUACAMOLE-118: Migrate to poll() instead of select() for file descriptor guac_socket implementation.

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This commit is contained in:
Michael Jumper 2016-11-11 13:03:43 -08:00
parent a46ce4cc3b
commit 9d6d2aeba7
1 changed files with 11 additions and 18 deletions
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29
src/libguac/socket-fd.c
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@ -22,6 +22,7 @@
#include "error.h"
#include "socket.h"
#include <poll.h>
#include <pthread.h>
#include <stddef.h>
#include <stdio.h>
@ -30,12 +31,6 @@
#include <sys/time.h>
#include <unistd.h>
#ifdef __MINGW32__
#include <winsock2.h>
#else
#include <sys/select.h>
#endif
/**
* Data associated with an open socket which writes to a file descriptor.
*/
@ -337,24 +332,22 @@ static int guac_socket_fd_select_handler(guac_socket* socket,
guac_socket_fd_data* data = (guac_socket_fd_data*) socket->data;
fd_set fds;
struct timeval timeout;
int retval;
/* Initialize fd_set with single underlying file descriptor */
FD_ZERO(&fds);
FD_SET(data->fd, &fds);
/* Initialize with single underlying file descriptor */
struct pollfd fds[1] = {{
.fd = data->fd,
.events = POLLIN,
.revents = 0,
}};
/* No timeout if usec_timeout is negative */
if (usec_timeout < 0)
retval = select(data->fd + 1, &fds, NULL, NULL, NULL);
retval = poll(fds, 1, -1);
/* Handle timeout if specified */
else {
timeout.tv_sec = usec_timeout/1000000;
timeout.tv_usec = usec_timeout%1000000;
retval = select(data->fd + 1, &fds, NULL, NULL, &timeout);
}
/* Handle timeout if specified, rounding up to poll()'s granularity */
else
retval = poll(fds, 1, (usec_timeout + 999) / 1000);
/* Properly set guac_error */
if (retval < 0) {