new tracing mask TRACE_VOLUME to trace the msg tasks communication size and group...

[simgrid.git] / src / simix / smx_process.c

diff --git a/src/simix/smx_process.c b/src/simix/smx_process.c
index 0e92bfc..2370388 100644 (file)
--- a/src/simix/smx_process.c
+++ b/src/simix/smx_process.c
@@ -129,7 +129,6 @@ smx_process_t SIMIX_process_create(const char *name,
   xbt_swag_insert(process, host->process_list);
 
   DEBUG1("Start context '%s'", process->name);
-  SIMIX_context_start(process->context);
 
   /* Now insert it in the global process list and in the process to run list */
   xbt_swag_insert(process, simix_global->process_list);
@@ -164,13 +163,28 @@ void SIMIX_process_kill(smx_process_t process)
       SIMIX_unregister_action_to_condition(process->waiting_action, process->cond);
       SIMIX_action_destroy(process->waiting_action);
     }
+
+    if (process->sem) {
+      xbt_swag_remove(process, process->sem->sleeping);
+
+      if (process->waiting_action) {
+        SIMIX_unregister_action_to_semaphore(process->waiting_action, process->sem);
+        SIMIX_action_destroy(process->waiting_action);
+      }
+    }
+
     SIMIX_context_stop(process->context);
+
   } else {
-    DEBUG2("%p here! killing %p", simix_global->current_process, process);
-    SIMIX_process_schedule(process);
-    /* Cleanup if we were waiting for something */
-    if (process->mutex)
+    DEBUG4("%s(%p) here! killing %s(%p)",
+        simix_global->current_process->name,simix_global->current_process,
+        process->name,process);
+
+    /* Cleanup if it were waiting for something */
+    if (process->mutex) {
       xbt_swag_remove(process, process->mutex->sleeping);
+      process->mutex = NULL;
+    }
 
     if (process->cond) {
       xbt_swag_remove(process, process->cond->sleeping);
@@ -179,6 +193,7 @@ void SIMIX_process_kill(smx_process_t process)
         SIMIX_unregister_action_to_condition(process->waiting_action, process->cond);
         SIMIX_action_destroy(process->waiting_action);
       }
+      process->cond = NULL;
     }
 
     if (process->sem) {
@@ -188,7 +203,13 @@ void SIMIX_process_kill(smx_process_t process)
        SIMIX_unregister_action_to_semaphore(process->waiting_action, process->sem);
        SIMIX_action_destroy(process->waiting_action);
       }
+      process->sem = NULL;
     }
+
+    /* make sure that the process gets awake soon enough, now that we've set its iwannadie to 1 */
+    process->blocked = 0;
+    process->suspended = 0;
+    xbt_swag_insert(process, simix_global->process_to_run);
   }
 }
 
@@ -295,7 +316,7 @@ void SIMIX_process_suspend(smx_process_t process)
   if (process != SIMIX_process_self()) {
 
     if (process->mutex) {
-      /* process blocked on a mutex, only set suspend=1 */
+      /* process blocked on a mutex or sem, only set suspend=1 */
       process->suspended = 1;
     } else if (process->cond) {
       /* process blocked cond, suspend all actions */
@@ -308,7 +329,17 @@ void SIMIX_process_suspend(smx_process_t process)
       process->suspended = 1;
       c = process->cond;
       xbt_fifo_foreach(c->actions, i, act, smx_action_t) {
-        surf_workstation_model->suspend(act->surf_action);
+        SIMIX_action_suspend(act);
+      }
+    } else if (process->sem) {
+      smx_sem_t s;
+      xbt_fifo_item_t i;
+      smx_action_t act;
+
+      process->suspended = 1;
+      s = process->sem;
+      xbt_fifo_foreach(s->actions, i, act, smx_action_t) {
+        SIMIX_action_suspend(act);
       }
     } else {
       process->suspended = 1;
@@ -323,7 +354,7 @@ void SIMIX_process_suspend(smx_process_t process)
     cond = SIMIX_cond_init();
     dummy = SIMIX_action_execute(SIMIX_process_get_host(process), name, 0);
     SIMIX_process_self()->waiting_action = dummy;
-    surf_workstation_model->suspend(dummy->surf_action);
+    SIMIX_action_suspend(dummy);
     SIMIX_register_action_to_condition(dummy, cond);
     __SIMIX_cond_wait(cond);
     SIMIX_process_self()->waiting_action = NULL;
@@ -349,7 +380,7 @@ void SIMIX_process_resume(smx_process_t process)
     return;
 
   if (process->mutex) {
-    DEBUG0("Resume process blocked on a mutex");
+    DEBUG0("Resume process blocked on a mutex or semaphore");
     process->suspended = 0;     /* It'll wake up by itself when mutex releases */
     return;
   } else if (process->cond) {
@@ -361,10 +392,22 @@ void SIMIX_process_resume(smx_process_t process)
     process->suspended = 0;
     c = process->cond;
     xbt_fifo_foreach(c->actions, i, act, smx_action_t) {
-      surf_workstation_model->resume(act->surf_action);
+      SIMIX_action_resume(act);
     }
     SIMIX_cond_signal(c);
     return;
+  } else if (process->sem) {
+    /* temporaries variables */
+    smx_sem_t s;
+    xbt_fifo_item_t i;
+    smx_action_t act;
+    DEBUG0("Resume process blocked on a semaphore");
+    process->suspended = 0;
+    s = process->sem;
+    xbt_fifo_foreach(s->actions, i, act, smx_action_t) {
+      SIMIX_action_resume(act);
+    }
+    return;
   } else {
     process->suspended = 0;
     xbt_swag_insert(process, simix_global->process_to_run);
@@ -426,7 +469,10 @@ void SIMIX_process_yield(void)
                simix_global->maestro_process),
               "You are not supposed to run this function in maestro context!");
 
+
+  /* Go into sleep and return control to maestro */
   SIMIX_context_suspend(simix_global->current_process->context);
+  /* Ok, maestro returned control to us */
 
   if (simix_global->current_process->iwannadie)
     SIMIX_context_stop(simix_global->current_process->context);
@@ -434,20 +480,19 @@ void SIMIX_process_yield(void)
 
 void SIMIX_process_schedule(smx_process_t new_process)
 {
+  xbt_assert0(simix_global->current_process == simix_global->maestro_process,
+      "This function can only be called from maestro context");
   DEBUG1("Scheduling context: '%s'", new_process->name);
 
-  /* save the current process */
-  smx_process_t old_process = simix_global->current_process;
-
   /* update the current process */
   simix_global->current_process = new_process;
 
   /* schedule the context */
-  SIMIX_context_resume(old_process->context, new_process->context);
+  SIMIX_context_resume(new_process->context);
   DEBUG1("Resumed from scheduling context: '%s'", new_process->name);
 
   /* restore the current process to the previously saved process */
-  simix_global->current_process = old_process;
+  simix_global->current_process = simix_global->maestro_process;
 }
 
 /* callback: context fetching */