ssize_t
syncsocket_read_absolute(SyncSocket* ssocket,
void* buf,
size_t size,
int64_t deadline)
{
int ret;
if (ssocket == NULL || ssocket->fd < 0 || ssocket->iolooper == NULL) {
errno = EINVAL;
return -1;
}
ret = iolooper_wait_absolute(ssocket->iolooper, deadline);
if (ret > 0) {
if (!iolooper_is_read(ssocket->iolooper, ssocket->fd)) {
D("%s: Internal error, iolooper_is_read() not set!", __FUNCTION__);
return -1;
}
do {
ret = read(ssocket->fd, buf, size);
} while( ret < 0 && errno == EINTR);
} else if (ret == 0) {
// Timed out
errno = ETIMEDOUT;
ret = -1;
}
return ret;
}
static int
glooper_run(Looper* ll, Duration loop_deadline_ms)
{
GLooper* looper = (GLooper*) ll;
IoLooper* iol = looper->iolooper;
looper->running = 1;
while (looper->running)
{
int ret;
/* Exit prematurely if we detect that we don't have any active timer
* and no active LoopIo
*/
if (looper->numActiveIos == 0 && looper->activeTimers == NULL)
return EWOULDBLOCK;
/* First, compute next deadline */
Duration deadline = DURATION_INFINITE;
if (looper->activeTimers != NULL)
deadline = looper->activeTimers->deadline;
if (deadline > loop_deadline_ms)
deadline = loop_deadline_ms;
ret = iolooper_wait_absolute(iol, deadline);
if (ret < 0) { /* error, force stop ! */
break;
}
if (ret > 0) {
unsigned ready;
GLoopIo* io;
/* Add io waiters to the pending list */
AREFSET_FOREACH(looper->ios, io, {
if (io->wanted == 0)
continue;
ready = 0;
if (iolooper_is_read(iol, io->fd))
ready |= LOOP_IO_READ;
if (iolooper_is_write(iol, io->fd))
ready |= LOOP_IO_WRITE;
io->ready = ready;
if (ready != 0) {
arefSet_add(looper->pendingIos, io);
}
});
}