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/***************************** LICENSE START ***********************************
Copyright 2012 ECMWF and INPE. This software is distributed under the terms
of the Apache License version 2.0. In applying this license, ECMWF does not
waive the privileges and immunities granted to it by virtue of its status as
an Intergovernmental Organization or submit itself to any jurisdiction.
***************************** LICENSE END *************************************/
#include "Task.h"
#ifdef PM_USE_THREADS
#include "Mutex.hpp"
#endif
// -- Lists for holding tasks
// pendingTaskList: holds the tasks to be processed first
// cleanupTaskList: holds the taks to be processed in the end
PendingTaskList TaskBase::pendingTaskList_;
PendingTaskList TaskBase::cleanupTaskList_;
TaskBase::TaskBase()
{
// Empty
}
TaskBase::~TaskBase()
{
// Empty
}
void
TaskBase::RegisterTask ( TaskBase* task )
{
#ifdef PM_USE_THREADS
glMutex.Lock();
#endif
pendingTaskList_.push_back ( task );
#ifdef PM_USE_THREADS
glMutex.Unlock();
#endif
}
// Register a task on the cleanup list
void
TaskBase::RegisterCleanUpTask ( TaskBase* task )
{
cleanupTaskList_.push_back ( task );
}
void*
TaskBase::Run(void *)
{
PendingTaskList:: iterator t;
for ( t = pendingTaskList_.begin();
t != pendingTaskList_.end(); ++t )
{
// Execute the tasks
(*t)->Execute();
// delete the task element
TaskBase *pt = *t;
delete pt;
// make the element of the list point to zero
(*t) = 0;
}
return 0;
}
void
TaskBase::Flush()
{
TaskBase::FlushPending();
TaskBase::FlushCleanUp();
}
// -- Flush Pending
// execute all pending tasks (called first)
void
TaskBase::FlushPending()
{
#ifdef PM_USE_THREADS
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
pthread_t thread;
pthread_create(&thread,&attr,TaskBase::Run,0);
pthread_attr_destroy(&attr);
#else
PendingTaskList:: iterator t;
for ( t = pendingTaskList_.begin();
t != pendingTaskList_.end(); ++t )
{
// Execute the tasks
(*t)->Execute();
// delete the task element
TaskBase *pt = *t;
delete pt;
// make the element of the list point to zero
(*t) = 0;
}
pendingTaskList_.clear();
#endif
}
// -- Flush CleanUp
//
// Execute all clean up tasks (called in the end)
void
TaskBase::FlushCleanUp()
{
PendingTaskList::iterator t;
for ( t = cleanupTaskList_.begin();
t != cleanupTaskList_.end(); ++t )
{
// Execute the tasks
(*t)->Execute();
// delete the task element
TaskBase *pt = *t;
delete pt;
// make the element of the list point to zero
(*t) = 0;
}
cleanupTaskList_.clear();
}
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