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Public Member Functions | Protected Member Functions | Static Protected Member Functions | Private Attributes | Friends | List of all members
Task Class Referenceabstract

#include <task.hxx>

Inheritance diagram for Task:
Collaboration diagram for Task:

Public Member Functions

 Task (const char *pDebugName)
 Task (const Task &rTask)
Taskoperator= (const Task &rTask)
void SetPriority (TaskPriority ePriority)
TaskPriority GetPriority () const
const char * GetDebugName () const
virtual void Invoke ()=0
virtual void Start (bool bStartTimer=true)
 Schedules the task for execution. More...
void Stop ()
bool IsActive () const
void SetStatic ()
 This function must be called for static tasks, so the Task destructor ignores the scheduler mutex, as it may not be available anymore. More...
bool IsStatic () const

Protected Member Functions

const ImplSchedulerDataGetSchedulerData () const
virtual void SetDeletionFlags ()
virtual sal_uInt64 UpdateMinPeriod (sal_uInt64 nTimeNow) const =0
 How long (in MS) until the Task is ready to be dispatched? More...

Static Protected Member Functions

static void StartTimer (sal_uInt64 nMS)

Private Attributes

 Pointer to the element in scheduler list. More...
const char * mpDebugName
 Useful for debugging. More...
TaskPriority mePriority
 Task priority. More...
bool mbActive
 Currently in the scheduler. More...
bool mbStatic
 Is a static object. More...


class Scheduler
struct ImplSchedulerData

Detailed Description

Definition at line 42 of file task.hxx.

Constructor & Destructor Documentation

Task::Task ( const char *  pDebugName)

Definition at line 624 of file scheduler.cxx.

References DEFAULT, false, mbActive, and mpDebugName.

Task::Task ( const Task rTask)

Definition at line 634 of file scheduler.cxx.

References false, IsActive(), mbActive, mpDebugName, and Start().

Task::~Task ( )

Member Function Documentation

const char* Task::GetDebugName ( ) const
TaskPriority Task::GetPriority ( ) const

Definition at line 80 of file task.hxx.

References ImplSchedulerData::mePriority.

Referenced by AppendSchedulerData(), and Idle::Start().

const ImplSchedulerData* Task::GetSchedulerData ( ) const

Definition at line 56 of file task.hxx.

Referenced by Timer::UpdateMinPeriod().

virtual void Task::Invoke ( )
pure virtual
bool Task::IsActive ( ) const
bool Task::IsStatic ( ) const

Definition at line 110 of file task.hxx.

Referenced by ~Task().

Task & Task::operator= ( const Task rTask)

Definition at line 607 of file scheduler.cxx.

References IsActive(), mbActive, mePriority, Start(), and Stop().

Referenced by Timer::operator=().

void Task::SetDeletionFlags ( )

Reimplemented in Timer.

Definition at line 540 of file scheduler.cxx.

References mbActive.

Referenced by Scheduler::CallbackTaskScheduling(), and Timer::SetDeletionFlags().

void Task::SetPriority ( TaskPriority  ePriority)
void Task::SetStatic ( )

This function must be called for static tasks, so the Task destructor ignores the scheduler mutex, as it may not be available anymore.

The cleanup is still correct, as it has already happened in DeInitScheduler call well before the static destructor calls.

Definition at line 109 of file task.hxx.

Referenced by Scheduler::ImplDeInitScheduler().

void Task::Start ( bool  bStartTimer = true)

Schedules the task for execution.

If the timer is already active, it's reset! Check with Task::IsActive() to prevent reset.

If you unset bStartTimer, the Task must call Task::StartTimer(...) to be correctly scheduled! Otherwise it might just be picked up when the Scheduler runs the next time.

bStartTimerif false, don't schedule the Task by calling Task::StartTimer(0).

Reimplemented in Timer, and Idle.

Definition at line 545 of file scheduler.cxx.

References AppendSchedulerData(), tools::Time::GetSystemTicks(), ImplGetSVData(), ImplSchedulerData, ImplSVData::maSchedCtx, mbActive, ImplSchedulerContext::mbActive, ImplSchedulerData::mbInScheduler, ImplSchedulerData::mePriority, mePriority, ImplSchedulerData::mnUpdateTime, mpSchedulerData, ImplSchedulerData::mpTask, SAL_INFO, and StartTimer().

Referenced by operator=(), Idle::Start(), Timer::Start(), and Task().

void Task::StartTimer ( sal_uInt64  nMS)
void Task::Stop ( )
virtual sal_uInt64 Task::UpdateMinPeriod ( sal_uInt64  nTimeNow) const
protectedpure virtual

How long (in MS) until the Task is ready to be dispatched?

Simply return Scheduler::ImmediateTimeoutMs if you're ready, like an Idle. If you have to return Scheduler::InfiniteTimeoutMs, you probably need another mechanism to wake up the Scheduler or rely on other Tasks to be scheduled, or simply use a polling Timer.

nTimeNowthe current time
the sleep time of the Task to become ready

Implemented in Idle, and Timer.

Referenced by Scheduler::CallbackTaskScheduling().

Friends And Related Function Documentation

friend struct ImplSchedulerData

Definition at line 45 of file task.hxx.

Referenced by Start().

friend class Scheduler

Definition at line 44 of file task.hxx.

Member Data Documentation

bool Task::mbActive

Currently in the scheduler.

Definition at line 50 of file task.hxx.

Referenced by Scheduler::ImplDeInitScheduler(), operator=(), SetDeletionFlags(), SetPriority(), Start(), and Stop().

bool Task::mbStatic

Is a static object.

Definition at line 51 of file task.hxx.

TaskPriority Task::mePriority

Task priority.

Definition at line 49 of file task.hxx.

Referenced by operator=(), SetPriority(), and Start().

const char* Task::mpDebugName

Useful for debugging.

Definition at line 48 of file task.hxx.

Referenced by Task().

ImplSchedulerData* Task::mpSchedulerData

Pointer to the element in scheduler list.

Definition at line 47 of file task.hxx.

Referenced by Scheduler::CallbackTaskScheduling(), Scheduler::ImplDeInitScheduler(), SetPriority(), Start(), Stop(), and ~Task().

The documentation for this class was generated from the following files: