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Description
To be documented
Class definitions
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TEntryTimer = class(TObject)
constructor Create(ADriver:TFileSysDriver);
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destructor Destroy; override;
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protected
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FDriver:TFileSysDriver;
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FLock:TMutexHandle;
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FInterval:LongWord;
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FCheckTimer:TTimerHandle;
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FProcessTimer:TTimerHandle;
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FFirst:PEntryTimerItem;
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FLast:PEntryTimerItem;
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function AcquireLock:Boolean;
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function ReleaseLock:Boolean;
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function Dequeue:TDiskEntry;
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function FirstKey:Integer;
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function InsertKey(AEntry:TDiskEntry; AKey:Integer):Boolean;
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function DeleteKey(AEntry:TDiskEntry):Boolean;
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function DecrementKey:Integer;
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public
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function StartTimer(AInterval:LongWord):Boolean;
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function StopTimer:Boolean;
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function CheckTimer:Boolean;
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function ProcessTimer:Boolean;
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function ScheduleEntry(AEntry:TDiskEntry; ATimeout:LongWord):Boolean;
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function UnscheduleEntry(AEntry:TDiskEntry):Boolean;
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Function declarations
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constructor TEntryTimer.Create(ADriver:TFileSysDriver);
Description: To be documented
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destructor TEntryTimer.Destroy;
Description: To be documented
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function TEntryTimer.AcquireLock:Boolean;
Description: To be documented
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function TEntryTimer.ReleaseLock:Boolean;
Description: To be documented
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function TEntryTimer.Dequeue:TDiskEntry;
Description: Get and remove the first entry from the timer list
| Return
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Dequeued Entry or nil on failure
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function TEntryTimer.FirstKey:Integer;
Description: Get the first Key value from the timer list
| Return
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First Key value from timer list or ENTRY_TIMER_KEY_NONE on failure
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function TEntryTimer.InsertKey(AEntry:TDiskEntry; AKey:Integer):Boolean;
Description: Insert the supplied entry in the timer list in delta ascending order based on Key
| Entry
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The entry to be inserted
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| Key
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The key to order the insertion on
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| Return
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True if completed or False on failure
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function TEntryTimer.DeleteKey(AEntry:TDiskEntry):Boolean;
Description: Delete the supplied entry from the timer list
| Entry
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The Entry to be deleted
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| Return
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True if completed or False on failure
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function TEntryTimer.DecrementKey:Integer;
Description: Decrement the first Key value in the Timer list
| Return
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First Key value in timer list after decrement or ENTRY_TIMER_KEY_NONE on failure
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function TEntryTimer.StartTimer(AInterval:LongWord):Boolean;
Description: To be documented
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function TEntryTimer.StopTimer:Boolean;
Description: To be documented
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function TEntryTimer.CheckTimer:Boolean;
Description: To be documented
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function TEntryTimer.ProcessTimer:Boolean;
Description: To be documented
| Note
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Calls to ProcessTimer must be serialized so that multiple threads do not call simultaneously. This is done by creating the timer as non rescheduled and having this routine reenable the timer on completion.
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function TEntryTimer.ScheduleEntry(AEntry:TDiskEntry; ATimeout:LongWord):Boolean;
Description: To be documented
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function TEntryTimer.UnscheduleEntry(AEntry:TDiskEntry):Boolean;
Description: To be documented
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