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trunk/branch integration: Timer::skipped()

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This commit is contained in:
Marian Krivos 2011-08-22 16:30:47 +00:00
parent 090d93dc6e
commit 3b72c5d52e
1 changed files with 11 additions and 3 deletions
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14
Foundation/include/Poco/Timer.h
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@ -1,7 +1,7 @@
//
// Timer.h
//
// $Id: //poco/Main/Foundation/include/Poco/Timer.h#6 $
// $Id: //poco/1.4/Foundation/include/Poco/Timer.h#1 $
//
// Library: Foundation
// Package: Threading
@ -77,8 +77,10 @@ class Foundation_API Timer: protected Runnable
/// is 500 milliseconds, and the callback needs 400 milliseconds to
/// execute, the callback function is nevertheless called every 500
/// milliseconds. If the callback takes longer to execute than the
/// interval, the callback function will be immediately called again
/// once it returns.
/// interval, the callback function will not be called until the next
/// proper interval. The number of skipped invocations since the last
/// invocation will be recorded and can be obtained by the callback
/// by calling skipped().
///
/// The timer thread is taken from a thread pool, so
/// there is a limit to the number of available concurrent timers.
@ -151,6 +153,11 @@ public:
/// Sets the periodic interval. If the timer is already running
/// the new interval will be effective when the current interval
/// expires.
long skipped() const;
/// Returns the number of skipped invocations since the last invocation.
/// Skipped invocations happen if the timer callback function takes
/// longer to execute than the timer interval.
protected:
void run();
@ -160,6 +167,7 @@ private:
volatile long _periodicInterval;
Event _wakeUp;
Event _done;
long _skipped;
AbstractTimerCallback* _pCallback;
Timestamp _nextInvocation;
mutable FastMutex _mutex;