Compare file prefix only.

[simgrid.git] / src / msg / msg_synchro.cpp

diff --git a/src/msg/msg_synchro.cpp b/src/msg/msg_synchro.cpp
index d88e01f..5cf06a0 100644 (file)
--- a/src/msg/msg_synchro.cpp
+++ b/src/msg/msg_synchro.cpp
@@ -1,13 +1,14 @@
-/* Copyright (c) 2013-2014. The SimGrid Team.
+/* Copyright (c) 2013-2017. 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/ex.hpp"
+
 #include "msg_private.h"
-#include "xbt/sysdep.h"
-#include "xbt/synchro_core.h"
-#include "xbt/log.h"
+#include "src/simix/smx_private.h"
+#include "xbt/synchro.h"
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_synchro, msg, "Logging specific to MSG (synchro)");
 
@@ -18,7 +19,7 @@ XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_synchro, msg, "Logging specific to MSG (sync
 
 /** @brief creates a semaphore object of the given initial capacity */
 msg_sem_t MSG_sem_init(int initial_value) {
-  return simcall_sem_init(initial_value);
+  return simgrid::simix::kernelImmediate([initial_value] { return SIMIX_sem_init(initial_value); });
 }
 
 /** @brief locks on a semaphore object */
@@ -28,28 +29,24 @@ void MSG_sem_acquire(msg_sem_t sem) {
 
 /** @brief locks on a semaphore object up until the provided timeout expires */
 msg_error_t MSG_sem_acquire_timeout(msg_sem_t sem, double timeout) {
-  xbt_ex_t e;
   msg_error_t res = MSG_OK;
-  TRY {
+  try {
     simcall_sem_acquire_timeout(sem,timeout);
-  } CATCH(e) {
-    if (e.category == timeout_error) {
-      res = MSG_TIMEOUT;
-      xbt_ex_free(e);
-    } else {
-      RETHROW;
-    }
+  } catch(xbt_ex& e) {
+    if (e.category == timeout_error)
+      return MSG_TIMEOUT;
+    throw;
   }
   return res;
 }
 
 /** @brief releases the semaphore object */
 void MSG_sem_release(msg_sem_t sem) {
-  simcall_sem_release(sem);
+  simgrid::simix::kernelImmediate([sem] { SIMIX_sem_release(sem); });
 }
 
-void MSG_sem_get_capacity(msg_sem_t sem) {
-  simcall_sem_get_capacity(sem);
+int MSG_sem_get_capacity(msg_sem_t sem) {
+  return simgrid::simix::kernelImmediate([sem] { return SIMIX_sem_get_capacity(sem); });
 }
 
 void MSG_sem_destroy(msg_sem_t sem) {
@@ -62,24 +59,48 @@ void MSG_sem_destroy(msg_sem_t sem) {
  * But that's a classical semaphore issue, and SimGrid's semaphore are not different to usual ones here.
  */
 int MSG_sem_would_block(msg_sem_t sem) {
-  return simcall_sem_would_block(sem);
+  return simgrid::simix::kernelImmediate([sem] { return SIMIX_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++;
+  XBT_DEBUG("waiting %p %u/%u", bar, bar->arrived_processes, bar->expected_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;
 }
 /**@}*/