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trade some max call count for more accurate timing in full media situations, hint: use 30ms ptime for drastic reduction in resources 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@16081 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale 2009-12-29 23:21:20 +00:00
parent 1e1b011675
commit f80a9bd02a
5 changed files with 76 additions and 25 deletions
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2
configure.in
View File

@ -399,7 +399,7 @@ AC_FUNC_MALLOC
AC_TYPE_SIGNAL
AC_FUNC_STRFTIME
AC_CHECK_FUNCS([gethostname vasprintf mmap mlock mlockall usleep getifaddrs])
AC_CHECK_FUNCS([sched_setscheduler setpriority setrlimit setgroups initgroups])
AC_CHECK_FUNCS([sched_setscheduler sched_setaffinity setpriority setrlimit setgroups initgroups])
AC_CHECK_FUNCS([wcsncmp setgroups asprintf setenv pselect gettimeofday localtime_r gmtime_r strcasecmp stricmp _stricmp])
AC_CHECK_LIB(rt, clock_gettime, [AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [Define if you have clock_gettime()])])

1
src/include/switch_core.h
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@ -1941,6 +1941,7 @@ SWITCH_DECLARE(void) switch_load_network_lists(switch_bool_t reload);
SWITCH_DECLARE(switch_bool_t) switch_check_network_list_ip_token(const char *ip_str, const char *list_name, const char **token);
#define switch_check_network_list_ip(_ip_str, _list_name) switch_check_network_list_ip_token(_ip_str, _list_name, NULL)
SWITCH_DECLARE(void) switch_time_set_monotonic(switch_bool_t enable);
SWITCH_DECLARE(void) switch_time_set_nanosleep(switch_bool_t enable);
SWITCH_DECLARE(uint32_t) switch_core_min_dtmf_duration(uint32_t duration);
SWITCH_DECLARE(uint32_t) switch_core_max_dtmf_duration(uint32_t duration);
SWITCH_DECLARE(uint32_t) switch_core_default_dtmf_duration(uint32_t duration);

6
src/switch_core.c
View File

@ -1409,8 +1409,10 @@ static void switch_load_core_config(const char *file)
if (tmp > 0) {
switch_core_default_dtmf_duration((uint32_t) tmp);
}
} else if (!strcasecmp(var, "disable-monotonic-timing")) {
switch_time_set_monotonic(SWITCH_FALSE);
} else if (!strcasecmp(var, "enable-monotonic-timing")) {
switch_time_set_monotonic(switch_true(var));
} else if (!strcasecmp(var, "enable-clock-nanosleep")) {
switch_time_set_nanosleep(switch_true(var));
} else if (!strcasecmp(var, "max-sessions") && !zstr(val)) {
switch_core_session_limit(atoi(val));
} else if (!strcasecmp(var, "rtp-start-port") && !zstr(val)) {

4
src/switch_core_session.c
View File

@ -1281,13 +1281,13 @@ SWITCH_DECLARE(switch_core_session_t *) switch_core_session_request_uuid(switch_
switch_mutex_unlock(runtime.throttle_mutex);
if (sps <= 0) {
//switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Throttle Error!\n");
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Throttle Error! %d\n", session_manager.session_count);
UNPROTECT_INTERFACE(endpoint_interface);
return NULL;
}
if ((count + 1) > session_manager.session_limit) {
//switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Over Session Limit!\n");
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Over Session Limit! %d\n", session_manager.session_limit);
UNPROTECT_INTERFACE(endpoint_interface);
return NULL;
}

88
src/switch_time.c
View File

@ -70,6 +70,7 @@ SWITCH_MODULE_DEFINITION(CORE_SOFTTIMER_MODULE, softtimer_load, softtimer_shutdo
#define IDLE_SPEED 100
#define STEP_MS 1
#define STEP_MIC 1000
#define TICK_PER_SEC 1000
struct timer_private {
switch_size_t reference;
@ -85,6 +86,7 @@ struct timer_matrix {
uint32_t roll;
switch_mutex_t *mutex;
switch_thread_cond_t *cond;
switch_thread_rwlock_t *rwlock;
};
typedef struct timer_matrix timer_matrix_t;
@ -92,23 +94,39 @@ static timer_matrix_t TIMER_MATRIX[MAX_ELEMENTS + 1];
static void do_sleep(switch_interval_time_t t)
{
#if defined(HAVE_CLOCK_NANOSLEEP) || defined(DARWIN)
struct timespec ts;
#endif
#if defined(WIN32)
if (t < 1000) {
t = 1000;
}
#endif
#if defined(DARWIN)
struct timespec ts;
#if !defined(DARWIN)
if (t > 100000) {
apr_sleep(t);
}
#endif
#if defined(HAVE_CLOCK_NANOSLEEP)
ts.tv_sec = t / APR_USEC_PER_SEC;
ts.tv_nsec = ((t % APR_USEC_PER_SEC) * 1000) - 1000000;
clock_nanosleep(CLOCK_MONOTONIC, 0, &ts, NULL);
#elif defined(DARWIN)
ts.tv_sec = t / APR_USEC_PER_SEC;
ts.tv_nsec = (t % APR_USEC_PER_SEC) * 1000;
nanosleep(&ts, NULL);
sched_yield();
#else
apr_sleep(t);
#endif
#if defined(DARWIN)
sched_yield();
#endif
}
SWITCH_DECLARE(switch_time_t) switch_micro_time_now(void)
@ -132,6 +150,12 @@ static int MONO = 1;
static int MONO = 0;
#endif
#if defined(HAVE_CLOCK_NANOSLEEP)
static int NANO = 1;
#else
static int NANO = 0;
#endif
SWITCH_DECLARE(void) switch_time_set_monotonic(switch_bool_t enable)
{
@ -139,6 +163,11 @@ SWITCH_DECLARE(void) switch_time_set_monotonic(switch_bool_t enable)
switch_time_sync();
}
SWITCH_DECLARE(void) switch_time_set_nanosleep(switch_bool_t enable)
{
NANO = enable ? 1 : 0;
}
static switch_time_t time_now(int64_t offset)
{
switch_time_t now;
@ -334,17 +363,26 @@ static switch_status_t timer_next(switch_timer_t *timer)
while (globals.RUNNING == 1 && private_info->ready && TIMER_MATRIX[timer->interval].tick < private_info->reference) {
check_roll();
if (NANO) {
do_sleep(1000 * timer->interval);
continue;
}
if (globals.use_cond_yield == 1) {
switch_mutex_lock(TIMER_MATRIX[cond_index].mutex);
if (TIMER_MATRIX[timer->interval].tick < private_info->reference) {
switch_thread_cond_wait(TIMER_MATRIX[cond_index].cond, TIMER_MATRIX[cond_index].mutex);
if (switch_mutex_lock(TIMER_MATRIX[cond_index].mutex) == SWITCH_STATUS_SUCCESS) {
if (TIMER_MATRIX[timer->interval].tick < private_info->reference) {
switch_thread_cond_wait(TIMER_MATRIX[cond_index].cond, TIMER_MATRIX[cond_index].mutex);
}
switch_mutex_unlock(TIMER_MATRIX[cond_index].mutex);
} else {
do_sleep(1000);
}
switch_mutex_unlock(TIMER_MATRIX[cond_index].mutex);
} else {
do_sleep(1000);
}
}
if (globals.RUNNING == 1) {
return SWITCH_STATUS_SUCCESS;
}
@ -406,6 +444,13 @@ SWITCH_MODULE_RUNTIME_FUNCTION(softtimer_runtime)
switch_time_t ts = 0, last = 0;
int fwd_errs = 0, rev_errs = 0;
#ifdef HAVE_SCHED_SETAFFINITY
cpu_set_t set;
CPU_ZERO(&set);
CPU_SET(0, &set);
sched_setaffinity(0, sizeof(set), &set);
#endif
switch_time_sync();
globals.STARTED = globals.RUNNING = 1;
@ -421,6 +466,7 @@ SWITCH_MODULE_RUNTIME_FUNCTION(softtimer_runtime)
if (ts == last) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Broken MONOTONIC Clock Detected!, Support Disabled.\n");
MONO = 0;
NANO = 0;
runtime.reference = switch_time_now();
runtime.initiated = runtime.reference;
break;
@ -435,15 +481,16 @@ SWITCH_MODULE_RUNTIME_FUNCTION(softtimer_runtime)
fwd_errs = rev_errs = 0;
#ifndef DISABLE_1MS_COND
switch_mutex_init(&TIMER_MATRIX[1].mutex, SWITCH_MUTEX_NESTED, module_pool);
switch_thread_cond_create(&TIMER_MATRIX[1].cond, module_pool);
if (!NANO) {
switch_mutex_init(&TIMER_MATRIX[1].mutex, SWITCH_MUTEX_NESTED, module_pool);
switch_thread_cond_create(&TIMER_MATRIX[1].cond, module_pool);
}
#endif
globals.use_cond_yield = globals.RUNNING == 1;
globals.use_cond_yield = globals.RUNNING = 1;
while (globals.RUNNING == 1) {
runtime.reference += STEP_MIC;
while ((ts = time_now(runtime.offset)) < runtime.reference) {
if (ts < last) {
if (MONO) {
@ -461,11 +508,10 @@ SWITCH_MODULE_RUNTIME_FUNCTION(softtimer_runtime)
} else {
rev_errs = 0;
}
do_sleep(STEP_MIC);
do_sleep(STEP_MIC);
last = ts;
}
if (ts > (runtime.reference + too_late)) {
if (MONO) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Virtual Migration Detected! Syncing Clock\n");
@ -495,7 +541,7 @@ SWITCH_MODULE_RUNTIME_FUNCTION(softtimer_runtime)
current_ms += STEP_MS;
tick += STEP_MS;
if (tick >= 1000) {
if (tick >= TICK_PER_SEC) {
if (runtime.sps <= 0) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Over Session Rate of %d!\n", runtime.sps_total);
}
@ -525,9 +571,11 @@ SWITCH_MODULE_RUNTIME_FUNCTION(softtimer_runtime)
if (TIMER_MATRIX[x].count) {
TIMER_MATRIX[x].tick++;
#ifdef DISABLE_1MS_COND
if (TIMER_MATRIX[x].mutex && switch_mutex_trylock(TIMER_MATRIX[x].mutex) == SWITCH_STATUS_SUCCESS) {
switch_thread_cond_broadcast(TIMER_MATRIX[x].cond);
switch_mutex_unlock(TIMER_MATRIX[x].mutex);
if (!NANO) {
if (TIMER_MATRIX[x].mutex && switch_mutex_trylock(TIMER_MATRIX[x].mutex) == SWITCH_STATUS_SUCCESS) {
switch_thread_cond_broadcast(TIMER_MATRIX[x].cond);
switch_mutex_unlock(TIMER_MATRIX[x].mutex);
}
}
#endif
if (TIMER_MATRIX[x].tick == MAX_TICK) {