1 /* xbt_synchro -- advanced multithreaded features */
2 /* Working on top of real threads in RL and of simulated processes in SG */
4 /* Copyright (c) 2009, 2010. The SimGrid Team.
5 * All rights reserved. */
7 /* This program is free software; you can redistribute it and/or modify it
8 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #include "xbt/sysdep.h"
11 #include "xbt/dynar.h"
12 #include "xbt/synchro.h"
13 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(xbt_sync);
18 void_f_int_pvoid_t function;
20 } s_worker_data_t,*worker_data_t;
22 static void worker_wait_n_free(void*w) {
23 worker_data_t worker=*(worker_data_t*)w;
24 xbt_thread_join(worker->worker);
27 static void worker_wrapper(void *w) {
28 worker_data_t me=(worker_data_t)w;
29 (*me->function)(me->rank,xbt_dynar_get_ptr(me->data,me->rank));
32 void xbt_dynar_dopar(xbt_dynar_t datas, void_f_int_pvoid_t function) {
33 xbt_dynar_t workers = xbt_dynar_new(sizeof(worker_data_t),worker_wait_n_free);
36 if (xbt_dynar_length(datas)==0)
37 return; /* nothing to do */
38 if (xbt_dynar_length(datas)==1) {
39 /* don't start any new thread, do it directly */
40 (*function)(0,xbt_dynar_get_ptr(datas,0));
43 /* Start all workers */
44 INFO1("Dopar for %ld elements",xbt_dynar_length(datas));
45 xbt_dynar_foreach(datas,cursor,data){
46 worker_data_t w = xbt_new0(s_worker_data_t,1);
48 w->function = function;
50 xbt_dynar_push(workers,&w);
51 w->worker = xbt_thread_create("dopar worker",worker_wrapper,w,1/*joinable*/);
54 xbt_dynar_free(&workers);
59 #include "xbt/synchro.h"
61 XBT_TEST_SUITE("synchro", "Advanced synchronization mecanisms");
62 XBT_LOG_EXTERNAL_CATEGORY(xbt_dyn);
63 XBT_LOG_DEFAULT_CATEGORY(xbt_dyn);
65 static void add100(int rank,void *data) {
66 //INFO2("Thread%d: Add 100 to %d",rank,*(int*)data);
70 XBT_TEST_UNIT("dopar", test_dynar_dopar, "do parallel on dynars of integers")
76 xbt_test_add1("==== Push %d int, add 100 to each of them in parallel and check the results", NB_ELEM);
77 d = xbt_dynar_new(sizeof(int), NULL);
78 for (cpt = 0; cpt < NB_ELEM; cpt++) {
79 xbt_dynar_push_as(d, int, cpt); /* This is faster (and possible only with scalars) */
80 xbt_test_log2("Push %d, length=%lu", cpt, xbt_dynar_length(d));
82 xbt_dynar_dopar(d,add100);
84 xbt_dynar_foreach(d, cursor, i) {
85 xbt_test_assert2(i == cpt,
86 "The retrieved value is not the expected one (%d!=%d)",
93 #endif /* SIMGRID_TEST */