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thread_pool.cpp
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thread_pool.cpp
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/**************************************************************************
Lightspark, a free flash player implementation
Copyright (C) 2009 Alessandro Pignotti (a.pignotti@sssup.it)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
**************************************************************************/
#include "thread_pool.h"
#include "compat.h"
using namespace lightspark;
extern TLSDATA SystemState* sys;
ThreadPool::ThreadPool(SystemState* s)
{
m_sys=s;
sem_init(&mutex,0,1);
sem_init(&num_jobs,0,0);
for(int i=0;i<NUM_THREADS;i++)
pthread_create(&threads[i],NULL,job_worker,this);
}
void* ThreadPool::job_worker(void* t)
{
ThreadPool* th=static_cast<ThreadPool*>(t);
sys=th->m_sys;
while(1)
{
sem_wait(&th->num_jobs);
sem_wait(&th->mutex);
IThreadJob* myJob=th->jobs.front();
th->jobs.pop_front();
sem_post(&th->mutex);
myJob->execute();
}
}
void ThreadPool::addJob(IThreadJob* j)
{
sem_wait(&mutex);
jobs.push_back(j);
sem_post(&mutex);
sem_post(&num_jobs);
}