#include "tevent.h"
#include "tevent_internal.h"
#include "tevent_util.h"
+#ifdef HAVE_EVENTFD
+#include <sys/eventfd.h>
+#endif
static void tevent_abort(struct tevent_context *ev, const char *reason);
#elif defined(HAVE_SOLARIS_PORTS)
tevent_port_init();
#endif
-
+#ifdef HAVE_KQUEUE
+ tevent_kqueue_init();
+#endif
tevent_standard_init();
}
ev->ops = ops;
ev->additional_data = additional_data;
+ /* FD and TIMER events are always supported */
+ ev->features |= TEVENT_FEATURE_FD_SUPPORT;
+ ev->features |= TEVENT_FEATURE_TIMER_SUPPORT;
+
ret = ev->ops->context_init(ev);
if (ret != 0) {
talloc_free(ev);
bool tevent_common_have_events(struct tevent_context *ev)
{
if (ev->fd_events != NULL) {
- if (ev->fd_events != ev->pipe_fde) {
+ if (ev->fd_events != ev->wakeup_fde) {
return true;
}
if (ev->fd_events->next != NULL) {
{
ssize_t ret;
- char c[16];
- /* its non-blocking, doesn't matter if we read too much */
do {
- ret = read(fde->fd, c, sizeof(c));
+ /*
+ * This is the boilerplate for eventfd, but it works
+ * for pipes too. And as we don't care about the data
+ * we read, we're fine.
+ */
+ uint64_t val;
+ ret = read(fde->fd, &val, sizeof(val));
} while (ret == -1 && errno == EINTR);
}
{
int ret;
- if (ev->pipe_fde != NULL) {
+ if (ev->wakeup_fde != NULL) {
return 0;
}
- ret = pipe(ev->pipe_fds);
+#ifdef HAVE_EVENTFD
+ ret = eventfd(0, EFD_NONBLOCK);
if (ret == -1) {
return errno;
}
- ev_set_blocking(ev->pipe_fds[0], false);
- ev_set_blocking(ev->pipe_fds[1], false);
+ ev->wakeup_fd = ret;
+#else
+ {
+ int pipe_fds[2];
+ ret = pipe(pipe_fds);
+ if (ret == -1) {
+ return errno;
+ }
+ ev->wakeup_fd = pipe_fds[0];
+ ev->wakeup_write_fd = pipe_fds[1];
- ev->pipe_fde = tevent_add_fd(ev, ev, ev->pipe_fds[0],
+ ev_set_blocking(ev->wakeup_fd, false);
+ ev_set_blocking(ev->wakeup_write_fd, false);
+ }
+#endif
+
+ ev->wakeup_fde = tevent_add_fd(ev, ev, ev->wakeup_fd,
TEVENT_FD_READ,
wakeup_pipe_handler, NULL);
- if (ev->pipe_fde == NULL) {
- close(ev->pipe_fds[0]);
- close(ev->pipe_fds[1]);
+ if (ev->wakeup_fde == NULL) {
+ close(ev->wakeup_fd);
+#ifndef HAVE_EVENTFD
+ close(ev->wakeup_write_fd);
+#endif
return ENOMEM;
}
{
ssize_t ret;
- if (ev->pipe_fds[1] == -1) {
+ if (ev->wakeup_fde == NULL) {
return ENOTCONN;
}
do {
+#ifdef HAVE_EVENTFD
+ uint64_t val = 1;
+ ret = write(ev->wakeup_fd, &val, sizeof(val));
+#else
char c = '\0';
- ret = write(ev->pipe_fds[1], &c, 1);
+ ret = write(ev->wakeup_write_fd, &c, 1);
+#endif
} while ((ret == -1) && (errno == EINTR));
return 0;
static void tevent_common_wakeup_fini(struct tevent_context *ev)
{
- if (ev->pipe_fde == NULL) {
+ if (ev->wakeup_fde == NULL) {
return;
}
- TALLOC_FREE(ev->pipe_fde);
+ TALLOC_FREE(ev->wakeup_fde);
- close(ev->pipe_fds[0]);
- close(ev->pipe_fds[1]);
+ close(ev->wakeup_fd);
+#ifndef HAVE_EVENTFD
+ close(ev->wakeup_write_fd);
+#endif
}