-/* xbt_synchro -- advanced multithreaded features */
-/* Working on top of real threads in RL and of simulated processes in SG */
-
-/* Copyright (c) 2009, 2010. The SimGrid Team.
- * All rights reserved. */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-#include "xbt/sysdep.h"
-#include "xbt/dynar.h"
-#include "xbt/synchro.h"
-#include "xbt/xbt_os_thread.h"
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(xbt_sync);
-
-typedef struct {
- xbt_dynar_t data;
- int rank;
- void_f_int_pvoid_t function;
- xbt_os_thread_t worker;
-} s_worker_data_t, *worker_data_t;
-
-static void worker_wait_n_free(void *w)
-{
- worker_data_t worker = *(worker_data_t *) w;
- xbt_os_thread_join(worker->worker, NULL);
- xbt_free(worker);
-}
-
-static void *worker_wrapper(void *w)
-{
- worker_data_t me = (worker_data_t) w;
- me->function(me->rank, xbt_dynar_get_ptr(me->data, me->rank));
- return NULL;
-}
-
-void xbt_dynar_dopar(xbt_dynar_t datas, void_f_int_pvoid_t function)
-{
- xbt_dynar_t workers =
- xbt_dynar_new(sizeof(worker_data_t), worker_wait_n_free);
- unsigned int cursor;
- void *data;
- if (xbt_dynar_is_empty(datas))
- return; /* nothing to do */
- if (xbt_dynar_length(datas) == 1) {
- /* don't start any new thread, do it directly */
- function(0, xbt_dynar_get_ptr(datas, 0));
- return;
- }
- /* Start all workers */
- XBT_DEBUG("Dopar for %lu elements", xbt_dynar_length(datas));
- xbt_dynar_foreach(datas, cursor, data) {
- worker_data_t w = xbt_new0(s_worker_data_t, 1);
- w->data = datas;
- w->function = function;
- w->rank = cursor;
- xbt_dynar_push(workers, &w);
- w->worker =
- xbt_os_thread_create("dopar worker", worker_wrapper, w, NULL);
- }
- /* wait them all */
- xbt_dynar_free(&workers);
-}
-
-#ifdef SIMGRID_TEST
-#define NB_ELEM 50
-#include "xbt/synchro.h"
-
-XBT_TEST_SUITE("synchro", "Advanced synchronization mecanisms");
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(xbt_dyn);
-
-static void add100(int rank, void *data)
-{
- //XBT_INFO("Thread%d: Add 100 to %d",rank,*(int*)data);
- *(int *) data += 100;
-}
-
-XBT_TEST_UNIT("dopar", test_dynar_dopar, "do parallel on dynars of integers")
-{
- xbt_dynar_t d;
- int i, cpt;
- unsigned int cursor;
-
- xbt_test_add
- ("==== Push %d int, add 100 to each of them in parallel and check the results",
- NB_ELEM);
- d = xbt_dynar_new(sizeof(int), NULL);
- for (cpt = 0; cpt < NB_ELEM; cpt++) {
- xbt_dynar_push_as(d, int, cpt); /* This is faster (and possible only with scalars) */
- xbt_test_log("Push %d, length=%lu", cpt, xbt_dynar_length(d));
- }
- xbt_dynar_dopar(d, add100);
- cpt = 100;
- xbt_dynar_foreach(d, cursor, i) {
- xbt_test_assert(i == cpt,
- "The retrieved value is not the expected one (%d!=%d)",
- i, cpt);
- cpt++;
- }
- xbt_dynar_free(&d);
-}
-
-#endif /* SIMGRID_TEST */
