73 lines
1.5 KiB
C++
73 lines
1.5 KiB
C++
// KDiskDeviceJobQueue.h
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#ifndef _K_DISK_DEVICE_JOB_QUEUE_H
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#define _K_DISK_DEVICE_JOB_QUEUE_H
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#include <OS.h>
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#include "disk_device_manager.h"
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namespace BPrivate {
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namespace DiskDevice {
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class KDiskDevice;
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class KDiskDeviceJob;
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class KDiskDeviceJobQueue {
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public:
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KDiskDeviceJobQueue(KDiskDevice *device = NULL);
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~KDiskDeviceJobQueue();
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status_t InitCheck() const;
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void SetDevice(KDiskDevice *device);
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KDiskDevice *Device() const;
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int32 ActiveJobIndex() const;
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KDiskDeviceJob *ActiveJob() const;
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// list of scheduled jobs
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bool AddJob(KDiskDeviceJob *job);
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KDiskDeviceJob *RemoveJob(int32 index);
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bool RemoveJob(KDiskDeviceJob *job);
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// Adding/removing is only possible before the queues is added to the
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// manager.
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KDiskDeviceJob *JobAt(int32 index) const;
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int32 CountJobs() const;
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status_t Execute();
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// Called by the manager, when the queue is added to it.
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// manager must be locked
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status_t Cancel(bool reverse);
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status_t Pause();
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status_t Continue();
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sem_id ReadyToPause();
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// called only by the queue's thread from within a module hook
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bool IsExecuting() const;
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bool IsCanceled() const;
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bool ShallReverse() const;
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bool IsPaused() const;
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bool IsPauseRequested() const;
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private:
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struct JobQueue;
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int32 _ThreadLoop();
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static int32 _ThreadEntry(void *data);
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KDiskDevice *fDevice;
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int32 fActiveJob;
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JobQueue *fJobs;
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uint32 fFlags;
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thread_id fThread;
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sem_id fSyncSemaphore;
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};
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} // namespace DiskDevice
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} // namespace BPrivate
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using BPrivate::DiskDevice::KDiskDeviceJobQueue;
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#endif // _K_DISK_DEVICE_JOB_QUEUE_H
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