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changing type of offset parameter in file_seek from sg_size_t to the
[simgrid.git]
/
src
/
xbt
/
xbt_sg_synchro.c
diff --git
a/src/xbt/xbt_sg_synchro.c
b/src/xbt/xbt_sg_synchro.c
index
4907e6f
..
724755b
100644
(file)
--- a/
src/xbt/xbt_sg_synchro.c
+++ b/
src/xbt/xbt_sg_synchro.c
@@
-184,3
+184,47
@@
void xbt_cond_destroy(xbt_cond_t cond)
{
simcall_cond_destroy((smx_cond_t) cond);
}
+
+/***** barrier related functions *****/
+typedef struct s_xbt_bar_ {
+ xbt_mutex_t mutex;
+ xbt_cond_t cond;
+ unsigned int arrived_processes;
+ unsigned int expected_processes;
+} s_xbt_bar_;
+
+xbt_bar_t xbt_barrier_init(unsigned int count)
+{
+ xbt_bar_t bar = xbt_new0(s_xbt_bar_, 1);
+ bar->expected_processes = count;
+ bar->arrived_processes = 0;
+ bar->mutex = xbt_mutex_init();
+ bar->cond = xbt_cond_init();
+ return bar;
+}
+
+
+int xbt_barrier_wait(xbt_bar_t bar)
+{
+ int ret=0;
+ xbt_mutex_acquire(bar->mutex);
+ if (++bar->arrived_processes == bar->expected_processes) {
+ xbt_cond_broadcast(bar->cond);
+ xbt_mutex_release(bar->mutex);
+ ret=XBT_BARRIER_SERIAL_PROCESS;
+ bar->arrived_processes = 0;
+ } else {
+ xbt_cond_wait(bar->cond, bar->mutex);
+ xbt_mutex_release(bar->mutex);
+ }
+
+ return ret;
+}
+
+void xbt_barrier_destroy(xbt_bar_t bar)
+{
+ xbt_mutex_destroy(bar->mutex);
+ xbt_cond_destroy(bar->cond);
+ xbt_free(bar);
+}
+