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| author | Mihail Zenkov <promwad.mihail@restream.rt.ru> | 2018-09-20 00:13:34 +0300 |
|---|---|---|
| committer | Mihail Zenkov <promwad.mihail@restream.rt.ru> | 2018-09-20 00:13:34 +0300 |
| commit | 7214d60a1266d1ddd7ef2be6ae80a04a9a01ee03 (patch) | |
| tree | e96f63a7528cd59ff23039655c089be14b492040 /widget | |
| parent | 4b90811978c29d8dae05c8b4bc76d8616e8d73c4 (diff) | |
| download | uxp-7214d60a1266d1ddd7ef2be6ae80a04a9a01ee03.tar.gz | |
Fix timer overflow on converting from sec to msec in idleService
Diffstat (limited to 'widget')
| -rw-r--r-- | widget/nsIdleService.cpp | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/widget/nsIdleService.cpp b/widget/nsIdleService.cpp index a1a2566dfc..f9904d39c3 100644 --- a/widget/nsIdleService.cpp +++ b/widget/nsIdleService.cpp @@ -46,6 +46,10 @@ using namespace mozilla; // Number of seconds in a day. #define SECONDS_PER_DAY 86400 +// MAX_DELTA_SEC * 1000 should be less than UINT32_MAX to prevent overflow on +// converting from sec to msec +#define MAX_DELTA_SEC (SECONDS_PER_DAY * 10) + static PRLogModuleInfo *sLog = nullptr; #define LOG_TAG "GeckoIdleService" @@ -391,7 +395,7 @@ nsIdleService::GetInstance() nsIdleService::nsIdleService() : mCurrentlySetToTimeoutAt(TimeStamp()), mIdleObserverCount(0), - mDeltaToNextIdleSwitchInS(UINT32_MAX), + mDeltaToNextIdleSwitchInS(MAX_DELTA_SEC), mLastUserInteraction(TimeStamp::Now()) { if (sLog == nullptr) @@ -544,7 +548,7 @@ nsIdleService::ResetIdleTimeOut(uint32_t idleDeltaInMS) // Mark all idle services as non-idle, and calculate the next idle timeout. nsCOMArray<nsIObserver> notifyList; - mDeltaToNextIdleSwitchInS = UINT32_MAX; + mDeltaToNextIdleSwitchInS = MAX_DELTA_SEC; // Loop through all listeners, and find any that have detected idle. for (uint32_t i = 0; i < mArrayListeners.Length(); i++) { @@ -717,7 +721,7 @@ nsIdleService::IdleTimerCallback(void) } // We need to initialise the time to the next idle switch. - mDeltaToNextIdleSwitchInS = UINT32_MAX; + mDeltaToNextIdleSwitchInS = MAX_DELTA_SEC; // Create list of observers that should be notified. nsCOMArray<nsIObserver> notifyList; @@ -839,7 +843,7 @@ void nsIdleService::ReconfigureTimer(void) { // Check if either someone is idle, or someone will become idle. - if ((mIdleObserverCount == 0) && UINT32_MAX == mDeltaToNextIdleSwitchInS) { + if ((mIdleObserverCount == 0) && MAX_DELTA_SEC == mDeltaToNextIdleSwitchInS) { // If not, just let any existing timers run to completion // And bail out. MOZ_LOG(sLog, LogLevel::Debug, |