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make it easier to debug timing related problems

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This commit is contained in:
Lennart Poettering 2009-02-20 03:16:54 +01:00
parent fdca6edf20
commit ef189d50a7
1 changed files with 42 additions and 7 deletions
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49
src/pulsecore/rtpoll.c
View file

@ -50,29 +50,39 @@
#include <pulsecore/rtsig.h>
#include <pulsecore/flist.h>
#include <pulsecore/core-util.h>
#include <pulsecore/winsock.h>
#include <pulsecore/ratelimit.h>
#include "rtpoll.h"
/* #define DEBUG_TIMING */
struct pa_rtpoll {
struct pollfd *pollfd, *pollfd2;
unsigned n_pollfd_alloc, n_pollfd_used;
pa_bool_t timer_enabled;
struct timeval next_elapse;
pa_bool_t timer_enabled:1;
pa_bool_t scan_for_dead;
pa_bool_t running, installed, rebuild_needed, quit;
pa_bool_t scan_for_dead:1;
pa_bool_t running:1;
pa_bool_t installed:1;
pa_bool_t rebuild_needed:1;
pa_bool_t quit:1;
#ifdef HAVE_PPOLL
pa_bool_t timer_armed:1;
#ifdef __linux__
pa_bool_t dont_use_ppoll:1;
#endif
int rtsig;
sigset_t sigset_unblocked;
timer_t timer;
pa_bool_t timer_armed;
#ifdef __linux__
pa_bool_t dont_use_ppoll;
#endif
#ifdef DEBUG_TIMING
pa_usec_t timestamp;
pa_usec_t slept, awake;
#endif
PA_LLIST_HEAD(pa_rtpoll_item, items);
@ -149,6 +159,11 @@ pa_rtpoll *pa_rtpoll_new(void) {
PA_LLIST_HEAD_INIT(pa_rtpoll_item, p->items);
#ifdef DEBUG_TIMING
p->timestamp = pa_rtclock_usec();
p->slept = p->awake = 0;
#endif
return p;
}
@ -377,6 +392,14 @@ int pa_rtpoll_run(pa_rtpoll *p, pa_bool_t wait) {
pa_timeval_add(&timeout, pa_timeval_diff(&p->next_elapse, &now));
}
#ifdef DEBUG_TIMING
{
pa_usec_t now = pa_rtclock_usec();
p->awake = now - p->timestamp;
p->timestamp = now;
}
#endif
/* OK, now let's sleep */
#ifdef HAVE_PPOLL
@ -396,6 +419,18 @@ int pa_rtpoll_run(pa_rtpoll *p, pa_bool_t wait) {
#endif
r = poll(p->pollfd, p->n_pollfd_used, (!wait || p->quit || p->timer_enabled) ? (int) ((timeout.tv_sec*1000) + (timeout.tv_usec / 1000)) : -1);
#ifdef DEBUG_TIMING
{
pa_usec_t now = pa_rtclock_usec();
p->slept = now - p->timestamp;
p->timestamp = now;
pa_log("Process time %llu ms; sleep time %llu ms",
(unsigned long long) (p->awake / PA_USEC_PER_MSEC),
(unsigned long long) (p->slept / PA_USEC_PER_MSEC));
}
#endif
if (r < 0) {
if (errno == EAGAIN || errno == EINTR)
r = 0;