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@ -28,6 +28,11 @@
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#include <stdio.h>
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#include "srsapps/common/thread_pool.h"
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#define DEBUG 0
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#define debug_thread(fmt, ...) do { if(DEBUG) printf(fmt, __VA_ARGS__); } while(0)
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#define USE_QUEUE
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namespace srslte {
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@ -58,50 +63,38 @@ uint32_t thread_pool::worker::get_id()
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void thread_pool::worker::stop()
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{
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running = false;
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pthread_cond_signal(&my_parent->cvar[my_id]);
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wait_thread_finish();
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}
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void thread_pool::worker::wait_to_start()
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{
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pthread_mutex_lock(&my_parent->mutex_start);
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while(!my_parent->begin[my_id]) {
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pthread_cond_wait(&my_parent->cvar_start, &my_parent->mutex_start);
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}
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my_parent->begin[my_id] = false;
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pthread_mutex_unlock(&my_parent->mutex_start);
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}
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thread_pool::thread_pool(uint32_t nof_workers_) :
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workers(nof_workers_),
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status(nof_workers_),
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cvar(nof_workers_),
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mutex(nof_workers_)
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void thread_pool::worker::finished()
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{
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pthread_mutex_lock(&my_parent->mutex_stop);
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my_parent->available_workers.push(this);
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pthread_cond_signal(&my_parent->cvar_stop);
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pthread_mutex_unlock(&my_parent->mutex_stop);
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}
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thread_pool::thread_pool(uint32_t nof_workers_) : workers(nof_workers_), begin(nof_workers_) {
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nof_workers = nof_workers_;
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for (int i=0;i<nof_workers;i++) {
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workers[i] = NULL;
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status[i] = IDLE;
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pthread_mutex_init(&mutex[i], NULL);
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pthread_cond_init(&cvar[i], NULL);
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}
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pthread_mutex_init(&mutex_queue, NULL);
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pthread_cond_init(&cvar_queue, NULL);
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running = true;
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pthread_mutex_init(&mutex_start, NULL);
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pthread_mutex_init(&mutex_stop, NULL);
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pthread_cond_init(&cvar_start, NULL);
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pthread_cond_init(&cvar_stop, NULL);
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}
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void thread_pool::init_worker(uint32_t id, worker *obj, uint32_t prio)
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{
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if (id < nof_workers) {
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pthread_mutex_lock(&mutex_stop);
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begin[id] = false;
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pthread_mutex_lock(&mutex_queue);
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workers[id] = obj;
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available_workers.push(obj);
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printf("Added worker to available_workers, len=%lu\n", available_workers.size());
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obj->setup(id, this, prio);
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pthread_cond_signal(&cvar_stop);
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pthread_mutex_unlock(&mutex_stop);
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pthread_cond_signal(&cvar_queue);
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pthread_mutex_unlock(&mutex_queue);
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}
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}
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@ -109,9 +102,6 @@ void thread_pool::stop()
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{
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/* Stop any thread waiting for available worker */
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running = false;
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pthread_mutex_lock(&mutex_stop);
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pthread_cond_signal(&cvar_start);
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pthread_mutex_unlock(&mutex_stop);
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/* Now stop all workers */
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for (uint32_t i=0;i<nof_workers;i++) {
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@ -121,24 +111,120 @@ void thread_pool::stop()
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start_worker(i);
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workers[i]->wait_thread_finish();
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}
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pthread_cond_destroy(&cvar[i]);
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pthread_mutex_destroy(&mutex[i]);
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}
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pthread_cond_destroy(&cvar_queue);
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pthread_mutex_destroy(&mutex_queue);
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}
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void thread_pool::worker::release()
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{
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finished();
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}
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void thread_pool::worker::wait_to_start()
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{
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debug_thread("wait_to_start() id=%d, status=%d, enter\n", my_id, my_parent->status[my_id]);
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pthread_mutex_lock(&my_parent->mutex[my_id]);
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while(my_parent->status[my_id] != START_WORK && running) {
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pthread_cond_wait(&my_parent->cvar[my_id], &my_parent->mutex[my_id]);
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}
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my_parent->status[my_id] = WORKING;
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pthread_mutex_unlock(&my_parent->mutex[my_id]);
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debug_thread("wait_to_start() id=%d, status=%d, exit\n", my_id, my_parent->status[my_id]);
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}
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/* And destroy mutexes */
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pthread_mutex_destroy(&mutex_start);
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pthread_mutex_destroy(&mutex_stop);
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pthread_cond_destroy(&cvar_start);
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pthread_cond_destroy(&cvar_stop);
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void thread_pool::worker::finished()
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{
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#ifdef USE_QUEUE
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//my_parent->available_workers.push(this);
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pthread_mutex_lock(&my_parent->mutex[my_id]);
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my_parent->status[my_id] = IDLE;
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pthread_mutex_unlock(&my_parent->mutex[my_id]);
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pthread_mutex_lock(&my_parent->mutex_queue);
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pthread_cond_signal(&my_parent->cvar_queue);
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pthread_mutex_unlock(&my_parent->mutex_queue);
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#else
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pthread_mutex_lock(&my_parent->mutex[my_id]);
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my_parent->status[my_id] = IDLE;
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pthread_cond_signal(&my_parent->cvar[my_id]);
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pthread_mutex_unlock(&my_parent->mutex[my_id]);
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#endif
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}
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thread_pool::worker* thread_pool::wait_worker()
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{
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wait_worker(0);
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}
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bool thread_pool::find_finished_worker(uint32_t tti, uint32_t *id) {
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for(int i=0;i<nof_workers;i++) {
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if (status[i] == IDLE) {
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*id = i;
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return true;
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}
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}
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return false;
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}
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thread_pool::worker* thread_pool::wait_worker(uint32_t tti)
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{
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thread_pool::worker *x;
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#ifdef USE_QUEUE
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debug_thread("wait_worker() - enter - tti=%d, state0=%d, state1=%d\n", tti, status[0], status[1]);
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pthread_mutex_lock(&mutex_queue);
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uint32_t id = 0;
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while(!find_finished_worker(tti, &id) && running) {
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pthread_cond_wait(&cvar_queue, &mutex_queue);
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}
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pthread_mutex_unlock(&mutex_queue);
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if (running) {
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x = workers[id];
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pthread_mutex_lock(&mutex[id]);
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status[id] = WORKER_READY;
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pthread_mutex_unlock(&mutex[id]);
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} else {
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x = NULL;
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}
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debug_thread("wait_worker() - exit - id=%d, x=0x%x\n", id, x);
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#else
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uint32_t id = tti%nof_workers;
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pthread_mutex_lock(&mutex[id]);
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while(status[id] != IDLE && running) {
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pthread_cond_wait(&cvar[id], &mutex[id]);
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}
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if (running) {
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x = (worker*) workers[id];
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status[id] = WORKER_READY;
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} else {
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x = NULL;
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}
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pthread_mutex_unlock(&mutex[id]);
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#endif
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return x;
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}
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void thread_pool::start_worker(uint32_t id) {
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if (workers[id]) {
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pthread_mutex_lock(&mutex_start);
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begin[id%nof_workers] = true;
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pthread_cond_signal(&cvar_start);
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pthread_mutex_unlock(&mutex_start);
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if (id < nof_workers) {
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pthread_mutex_lock(&mutex[id]);
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status[id] = START_WORK;
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pthread_cond_signal(&cvar[id]);
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pthread_mutex_unlock(&mutex[id]);
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debug_thread("start_worker() id=%d, status=%d\n", id, status[id]);
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}
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}
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void thread_pool::start_worker(worker* x)
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{
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for (uint32_t i=0;i<nof_workers;i++) {
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@ -161,23 +247,6 @@ uint32_t thread_pool::get_nof_workers()
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return nof_workers;
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}
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thread_pool::worker* thread_pool::wait_worker()
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{
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thread_pool::worker *x;
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pthread_mutex_lock(&mutex_stop);
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while(available_workers.empty() && running) {
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pthread_cond_wait(&cvar_stop, &mutex_stop);
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}
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if (running) {
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x = (worker*) available_workers.top();
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available_workers.pop();
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} else {
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x = NULL;
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}
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pthread_mutex_unlock(&mutex_stop);
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return x;
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}
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}
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ismagom
9 years ago