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Fix for timer jitter problem.

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This commit is contained in:
Adam Ierymenko 2015-09-23 14:01:41 -07:00
parent 367ffde00c
commit 2a527ea82e
1 changed files with 6 additions and 2 deletions
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8
node/Node.cpp
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@ -233,7 +233,9 @@ ZT1_ResultCode Node::processBackgroundTasks(uint64_t now,volatile uint64_t *next
_now = now;
Mutex::Lock bl(_backgroundTasksLock);
if ((now - _lastPingCheck) >= ZT_PING_CHECK_INVERVAL) {
unsigned long timeUntilNextPingCheck = ZT_PING_CHECK_INVERVAL;
const uint64_t timeSinceLastPingCheck = now - _lastPingCheck;
if (timeSinceLastPingCheck >= ZT_PING_CHECK_INVERVAL) {
try {
_lastPingCheck = now;
@ -278,6 +280,8 @@ ZT1_ResultCode Node::processBackgroundTasks(uint64_t now,volatile uint64_t *next
} catch ( ... ) {
return ZT1_RESULT_FATAL_ERROR_INTERNAL;
}
} else {
timeUntilNextPingCheck -= (unsigned long)timeSinceLastPingCheck;
}
if ((now - _lastHousekeepingRun) >= ZT_HOUSEKEEPING_PERIOD) {
@ -292,7 +296,7 @@ ZT1_ResultCode Node::processBackgroundTasks(uint64_t now,volatile uint64_t *next
}
try {
*nextBackgroundTaskDeadline = now + (uint64_t)std::max(std::min((unsigned long)ZT_PING_CHECK_INVERVAL,RR->sw->doTimerTasks(now)),(unsigned long)ZT_CORE_TIMER_TASK_GRANULARITY);
*nextBackgroundTaskDeadline = now + (uint64_t)std::max(std::min(timeUntilNextPingCheck,RR->sw->doTimerTasks(now)),(unsigned long)ZT_CORE_TIMER_TASK_GRANULARITY);
} catch ( ... ) {
return ZT1_RESULT_FATAL_ERROR_INTERNAL;
}