diff options
Diffstat (limited to 'src/runtime/time.go')
| -rw-r--r-- | src/runtime/time.go | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/runtime/time.go b/src/runtime/time.go index 517a493a700..70e21d4482e 100644 --- a/src/runtime/time.go +++ b/src/runtime/time.go @@ -390,7 +390,11 @@ func dodeltimer(pp *p, i int) int { if i == 0 { updateTimer0When(pp) } - atomic.Xadd(&pp.numTimers, -1) + n := atomic.Xadd(&pp.numTimers, -1) + if n == 0 { + // If there are no timers, then clearly none are modified. + atomic.Store64(&pp.timerModifiedEarliest, 0) + } return smallestChanged } @@ -414,7 +418,11 @@ func dodeltimer0(pp *p) { siftdownTimer(pp.timers, 0) } updateTimer0When(pp) - atomic.Xadd(&pp.numTimers, -1) + n := atomic.Xadd(&pp.numTimers, -1) + if n == 0 { + // If there are no timers, then clearly none are modified. + atomic.Store64(&pp.timerModifiedEarliest, 0) + } } // modtimer modifies an existing timer. |