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sndio
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If there are no descriptors to poll, just sleep until SIGALRM 

is posted and then update all timers restart the event loop.
Fixes throtteling while midi inputs are drained.
This commit is contained in:
Alexandre Ratchov 2011-06-02 18:08:58 +02:00
parent c7037f95a6
commit 0602f18759
1 changed files with 18 additions and 12 deletions
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30
aucat/file.c
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@ -297,7 +297,8 @@ file_poll(void)
struct file *f, *fnext;
struct aproc *p;
struct timespec ts;
long delta_nsec;
long long delta_nsec;
int res;
if (LIST_EMPTY(&file_list)) {
#ifdef DEBUG
@ -346,20 +347,25 @@ file_poll(void)
dbg_puts("\n");
}
#endif
if (nfds > 0) {
if (poll(pfds, nfds, -1) < 0) {
if (errno == EINTR)
return 1;
err(1, "file_poll: poll failed");
}
clock_gettime(CLOCK_MONOTONIC, &ts);
delta_nsec = 1000000000L * (ts.tv_sec - file_ts.tv_sec);
delta_nsec += ts.tv_nsec - file_ts.tv_nsec;
if (delta_nsec > 0) {
file_ts = ts;
res = poll(pfds, nfds, -1);
if (res < 0 && errno != EINTR)
err(1, "poll");
clock_gettime(CLOCK_MONOTONIC, &ts);
delta_nsec = 1000000000LL * (ts.tv_sec - file_ts.tv_sec);
delta_nsec += ts.tv_nsec - file_ts.tv_nsec;
if (delta_nsec > 0) {
file_ts = ts;
if (delta_nsec < 1000000000LL)
timo_update(delta_nsec / 1000);
else {
#ifdef DEBUG
dbg_puts("ignored huge clock delta\n");
#endif
}
}
if (res <= 0)
return 1;
f = LIST_FIRST(&file_list);
while (f != NULL) {
if (f->pfd == NULL) {