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/*
* Task.cpp
*
* Created on: Apr 6, 2012
* Author: Simon
*/
#include <unistd.h>
#include "Task.h"
#include "TaskListener.h"
void Task::AddTaskListener(TaskListener * listener)
{
this->listener = listener;
}
void Task::Start()
{
thDone = false;
done = false;
progress = 0;
status = "";
taskMutex = PTHREAD_MUTEX_INITIALIZER;
before();
pthread_mutex_init (&taskMutex, NULL);
pthread_create(&doWorkThread, 0, &Task::doWork_helper, this);
}
int Task::GetProgress()
{
return progress;
}
std::string Task::GetStatus()
{
return status;
}
std::string Task::GetError()
{
return error;
}
bool Task::GetDone()
{
return done;
}
void Task::Poll()
{
if(!done)
{
int newProgress;
bool newDone = false;
std::string newStatus;
std::string newError;
pthread_mutex_lock(&taskMutex);
newProgress = thProgress;
newDone = thDone;
newStatus = std::string(thStatus);
newError = std::string(thError);
pthread_mutex_unlock(&taskMutex);
if(newProgress!=progress) {
progress = newProgress;
if(listener)
listener->NotifyProgress(this);
}
if(newError!=error) {
error = std::string(newError);
if(listener)
listener->NotifyError(this);
}
if(newStatus!=status) {
status = std::string(newStatus);
if(listener)
listener->NotifyStatus(this);
}
if(done)
{
pthread_join(doWorkThread, NULL);
pthread_mutex_destroy(&taskMutex);
after();
}
if(newDone!=done)
{
done = newDone;
if(listener)
listener->NotifyDone(this);
}
}
}
Task::~Task()
{
}
void Task::before()
{
}
void Task::doWork()
{
notifyStatus("Fake progress");
for(int i = 0; i < 100; i++)
{
notifyProgress(i);
usleep((100)*1000);
}
}
void Task::after()
{
}
void * Task::doWork_helper(void * ref)
{
((Task*)ref)->doWork();
((Task*)ref)->notifyDone();
return NULL;
}
void Task::notifyProgress(int progress)
{
pthread_mutex_lock(&taskMutex);
thProgress = progress;
pthread_mutex_unlock(&taskMutex);
}
void Task::notifyStatus(std::string status)
{
pthread_mutex_lock(&taskMutex);
thStatus = std::string(status);
pthread_mutex_unlock(&taskMutex);
}
void Task::notifyDone()
{
pthread_mutex_lock(&taskMutex);
thDone = true;
pthread_mutex_unlock(&taskMutex);
}
void Task::notifyError(std::string error)
{
pthread_mutex_lock(&taskMutex);
thError = std::string(error);
pthread_mutex_unlock(&taskMutex);
}
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