#include <xbt/ex.hpp>
#include "msg_private.h"
-#include "xbt/sysdep.h"
-#include "xbt/synchro_core.h"
#include "xbt/log.h"
+#include "xbt/synchro.h"
+#include "xbt/sysdep.h"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_synchro, msg, "Logging specific to MSG (synchro)");
return simcall_sem_would_block(sem);
}
+/*-**** barrier related functions ****-*/
+typedef struct s_msg_bar {
+ xbt_mutex_t mutex;
+ xbt_cond_t cond;
+ unsigned int arrived_processes;
+ unsigned int expected_processes;
+} s_msg_bar_t;
+
/** @brief Initializes a barrier, with count elements */
msg_bar_t MSG_barrier_init(unsigned int count) {
- return (msg_bar_t)xbt_barrier_init(count);
+ msg_bar_t bar = xbt_new0(s_msg_bar, 1);
+ bar->expected_processes = count;
+ bar->arrived_processes = 0;
+ bar->mutex = xbt_mutex_init();
+ bar->cond = xbt_cond_init();
+ return bar;
}
/** @brief Initializes a barrier, with count elements */
void MSG_barrier_destroy(msg_bar_t bar) {
- xbt_barrier_destroy((xbt_bar_t)bar);
+ xbt_mutex_destroy(bar->mutex);
+ xbt_cond_destroy(bar->cond);
+ xbt_free(bar);
}
/** @brief Performs a barrier already initialized */
int MSG_barrier_wait(msg_bar_t bar) {
- if(xbt_barrier_wait((xbt_bar_t)bar) == XBT_BARRIER_SERIAL_PROCESS)
+ xbt_mutex_acquire(bar->mutex);
+ bar->arrived_processes++;
+ if (bar->arrived_processes == bar->expected_processes) {
+ xbt_cond_broadcast(bar->cond);
+ xbt_mutex_release(bar->mutex);
+ bar->arrived_processes = 0;
return MSG_BARRIER_SERIAL_PROCESS;
- else
- return 0;
+ }
+
+ xbt_cond_wait(bar->cond, bar->mutex);
+ xbt_mutex_release(bar->mutex);
+ return 0;
}
/**@}*/