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