71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
//------------------------------------------------------------------------------
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// Copyright (c) 2001-2002, OpenBeOS
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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// File Name: EventQueue.h
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// Author: Ingo Weinhold (bonefish@users.sf.net)
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// YellowBites (http://www.yellowbites.com)
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// Description: A class providing a mechanism for executing events at
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// specified times.
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//------------------------------------------------------------------------------
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#ifndef EVENT_QUEUE_H
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#define EVENT_QUEUE_H
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#include <List.h>
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#include <Locker.h>
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#include <OS.h>
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class Event;
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class EventQueue : public BLocker {
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public:
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EventQueue(const char *name = NULL);
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virtual ~EventQueue();
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status_t InitCheck();
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void Die();
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bool AddEvent(Event *event);
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bool RemoveEvent(Event *event);
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void ModifyEvent(Event *event, bigtime_t newTime);
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private:
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bool _AddEvent(Event *event);
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bool _RemoveEvent(Event *event);
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Event *_EventAt(int32 index) const;
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int32 _IndexOfEvent(Event *event) const;
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int32 _FindInsertionIndex(bigtime_t time) const;
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static int32 _EventLooperEntry(void *data);
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int32 _EventLooper();
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void _Reschedule();
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BList fEvents;
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thread_id fEventLooper;
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sem_id fLooperControl;
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volatile bigtime_t fNextEventTime;
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status_t fStatus;
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volatile bool fTerminating;
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};
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#endif // EVENT_QUEUE_H
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