static void xbt_parmap_busy_master_signal(xbt_parmap_t parmap);
static void xbt_parmap_busy_worker_wait(xbt_parmap_t parmap, unsigned round);
-#if HAVE_MC
-static void xbt_parmap_mc_work(xbt_parmap_t parmap, int worker_id);
-static void *xbt_parmap_mc_worker_main(void *arg);
-#endif
-
/**
* \brief Parallel map structure
*/
xbt_dynar_t data; /**< parameters to pass to fun in parallel */
std::atomic<unsigned int> index; /**< index of the next element of data to pick */
-#if HAVE_MC
- int finish;
- void* ref_snapshot;
- int_f_pvoid_pvoid_t snapshot_compare;
- unsigned int length;
- void* mc_data;
-#endif
-
/* posix only */
xbt_os_cond_t ready_cond;
xbt_os_mutex_t ready_mutex;
return parmap;
}
-#if HAVE_MC
-/**
- * \brief Creates a parallel map object
- * \param num_workers number of worker threads to create
- * \param mode how to synchronize the worker threads
- * \return the parmap created
- */
-xbt_parmap_t xbt_parmap_mc_new(unsigned int num_workers, e_xbt_parmap_mode_t mode)
-{
- unsigned int i;
-
- XBT_DEBUG("Create new parmap (%u workers)", num_workers);
-
- /* Initialize the thread pool data structure */
- xbt_parmap_t parmap = new s_xbt_parmap_t();
- parmap->workers = xbt_new(xbt_os_thread_t, num_workers);
-
- parmap->num_workers = num_workers;
- parmap->status = XBT_PARMAP_WORK;
- xbt_parmap_set_mode(parmap, mode);
-
- /* Create the pool of worker threads */
- xbt_parmap_thread_data_t data;
- parmap->workers[0] = NULL;
- for (i = 1; i < num_workers; i++) {
- data = xbt_new0(s_xbt_parmap_thread_data_t, 1);
- data->parmap = parmap;
- data->worker_id = i;
- parmap->workers[i] = xbt_os_thread_create(NULL, xbt_parmap_mc_worker_main, data, NULL);
- }
- return parmap;
-}
-#endif
-
/**
* \brief Destroys a parmap
* \param parmap the parmap to destroy
}
}
-#if HAVE_MC
-/**
- * \brief Applies a list of tasks in parallel.
- * \param parmap a parallel map object
- * \param fun the function to call in parallel
- * \param data each element of this dynar will be passed as an argument to fun
- */
-int xbt_parmap_mc_apply(xbt_parmap_t parmap, int_f_pvoid_pvoid_t fun, void* data, unsigned int length,
- void* ref_snapshot)
-{
- /* Assign resources to worker threads */
- parmap->snapshot_compare = fun;
- parmap->mc_data = data;
- parmap->index = 0;
- parmap->finish = -1;
- parmap->length = length;
- parmap->ref_snapshot = ref_snapshot;
- parmap->master_signal_f(parmap);
- xbt_parmap_mc_work(parmap, 0);
- parmap->master_wait_f(parmap);
- XBT_DEBUG("Job done");
- return parmap->finish;
-}
-
-static void xbt_parmap_mc_work(xbt_parmap_t parmap, int worker_id)
-{
- unsigned int data_size = (parmap->length / parmap->num_workers) + ((parmap->length % parmap->num_workers) ? 1 :0);
- void* start = (char*)parmap->mc_data + (data_size*worker_id*sizeof(void*));
- void* end = MIN((char *)start + data_size* sizeof(void*), (char*)parmap->mc_data + parmap->length*sizeof(void*));
-
- //XBT_CRITICAL("Worker %d : %p -> %p (%d)", worker_id, start, end, data_size);
-
- while ( start < end && parmap->finish == -1) {
- //XBT_CRITICAL("Starting with %p", start);
- int res = parmap->snapshot_compare(*(void**)start, parmap->ref_snapshot);
- start = (char *)start + sizeof(start);
- if (!res){
- parmap->finish = ((char*)start - (char*)parmap->mc_data) / sizeof(void*);
- //XBT_CRITICAL("Find good one %p (%p)", start, parmap->mc_data);
- break;
- }
- }
-}
-
-/**
- * \brief Main function of a worker thread.
- * \param arg the parmap
- */
-static void *xbt_parmap_mc_worker_main(void *arg)
-{
- xbt_parmap_thread_data_t data = (xbt_parmap_thread_data_t) arg;
- xbt_parmap_t parmap = data->parmap;
- unsigned round = 0;
- /* smx_context_t context = SIMIX_context_new(NULL, 0, NULL, NULL, NULL); */
- /* SIMIX_context_set_current(context); */
-
- XBT_DEBUG("New worker thread created");
-
- /* Worker's main loop */
- while (1) {
- parmap->worker_wait_f(parmap, ++round);
- if (parmap->status == XBT_PARMAP_WORK) {
- XBT_DEBUG("Worker %d got a job", data->worker_id);
-
- xbt_parmap_mc_work(parmap, data->worker_id);
- parmap->worker_signal_f(parmap);
-
- XBT_DEBUG("Worker %d has finished", data->worker_id);
- /* We are destroying the parmap */
- } else {
- xbt_free(data);
- return NULL;
- }
- }
-}
-#endif
-
#if HAVE_FUTEX_H
static void futex_wait(unsigned *uaddr, unsigned val)
{
