X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/3bda1a7061f2ebe20dbc9beb7b709f2a928b4229..cb6c404ed6a176ee440c09957a8fd9f34918a29b:/src/simix/smx_host.c

diff --git a/src/simix/smx_host.c b/src/simix/smx_host.c
index 57ea0d668f..815d947a5d 100644
--- a/src/simix/smx_host.c
+++ b/src/simix/smx_host.c
@@ -1,255 +1,407 @@
-/* 	$Id: smx_host.c 4895 2007-10-27 07:34:39Z mquinson $	 */
-
-/* Copyright (c) 2007 Arnaud Legrand, Bruno Donassolo.
-   All rights reserved.                                          */
+/* Copyright (c) 2007, 2008, 2009, 2010. 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 "private.h"
+#include "smx_private.h"
 #include "xbt/sysdep.h"
 #include "xbt/log.h"
 #include "xbt/dict.h"
+#include "mc/mc.h"
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_host, simix,
-				"Logging specific to SIMIX (hosts)");
+                                "Logging specific to SIMIX (hosts)");
+
+
+static void SIMIX_execution_finish(smx_action_t action);
 
-/********************************* Host **************************************/
-smx_host_t __SIMIX_host_create(const char *name,
-			       void *workstation, void *data)
+/**
+ * \brief Internal function to create a SIMIX host.
+ * \param name name of the host to create
+ * \param workstation the SURF workstation to encapsulate
+ * \param data some user data (may be NULL)
+ */
+smx_host_t SIMIX_host_create(const char *name,
+                               void *workstation, void *data)
 {
-  smx_simdata_host_t simdata = xbt_new0(s_smx_simdata_host_t, 1);
-  smx_host_t host = xbt_new0(s_smx_host_t, 1);
+  smx_host_t smx_host = xbt_new0(s_smx_host_t, 1);
   s_smx_process_t proc;
 
   /* Host structure */
-  host->name = xbt_strdup(name);
-  host->simdata = simdata;
-  host->data = data;
-
-  simdata->host = workstation;
-
-  simdata->process_list =
+  smx_host->name = xbt_strdup(name);
+  smx_host->data = data;
+  smx_host->host = workstation;
+  smx_host->process_list =
       xbt_swag_new(xbt_swag_offset(proc, host_proc_hookup));
-  /* Update global variables */
 
-  xbt_dict_set(simix_global->host,host->name, host,&__SIMIX_host_destroy);
+  /* Update global variables */
+  xbt_lib_set(host_lib,smx_host->name,SIMIX_HOST_LEVEL,smx_host);
 
-  return host;
+  return smx_host;
 }
 
-/** 
- * \brief Set the user data of a #smx_host_t.
- *
- * This functions checks whether some data has already been associated to \a host or not and attach \a data to \a host if it is possible.
- *	\param host SIMIX host
- *	\param data User data
+/**
+ * \brief Internal function to destroy a SIMIX host.
  *
+ * \param h the host to destroy (a smx_host_t)
  */
-void SIMIX_host_set_data(smx_host_t host, void *data)
+void SIMIX_host_destroy(void *h)
 {
-  xbt_assert0((host != NULL), "Invalid parameters");
-  xbt_assert0((host->data == NULL), "Data already set");
+  smx_host_t host = (smx_host_t) h;
 
-  /* Assign data */
-  host->data = data;
+  xbt_assert((host != NULL), "Invalid parameters");
+
+  /* Clean Simulator data */
+  if (xbt_swag_size(host->process_list) != 0) {
+    char *msg =
+        bprintf("Shutting down host %s, but it's not empty:", host->name);
+    char *tmp;
+    smx_process_t process = NULL;
+
+    xbt_swag_foreach(process, host->process_list) {
+      tmp = bprintf("%s\n\t%s", msg, process->name);
+      free(msg);
+      msg = tmp;
+    }
+    SIMIX_display_process_status();
+    THROWF(arg_error, 0, "%s", msg);
+  }
+
+  xbt_swag_free(host->process_list);
+
+  /* Clean host structure */
+  free(host->name);
+  free(host);
 
   return;
 }
 
 /**
- * \brief Return the user data of a #smx_host_t.
+ * \brief Returns a dict of all hosts.
  *
- * This functions checks whether \a host is a valid pointer or not and return the user data associated to \a host if it is possible.
- * \param host SIMIX host
+ * \return List of all hosts (as a #xbt_dict_t)
  */
-void *SIMIX_host_get_data(smx_host_t host)
+xbt_dict_t SIMIX_host_get_dict(void)
 {
-  xbt_assert0((host != NULL), "Invalid parameters");
+  xbt_dict_t host_dict = xbt_dict_new_homogeneous(NULL);
+  xbt_lib_cursor_t cursor = NULL;
+  char *name = NULL;
+  void **host = NULL;
+
+  xbt_lib_foreach(host_lib, cursor, name, host){
+    if(host[SIMIX_HOST_LEVEL])
+            xbt_dict_set(host_dict,name,host[SIMIX_HOST_LEVEL], NULL);
+  }
+  return host_dict;
+}
 
-  /* Return data */
-  return (host->data);
+smx_host_t SIMIX_host_get_by_name(const char *name)
+{
+  xbt_assert(((simix_global != NULL)
+               && (host_lib != NULL)),
+              "Environment not set yet");
+
+  return xbt_lib_get_or_null(host_lib, name, SIMIX_HOST_LEVEL);
 }
 
-/** 
- * \brief Return the name of the #smx_host_t.
- *
- * This functions checks whether \a host is a valid pointer or not and return its name.
- * \param host SIMIX host
- */
-const char *SIMIX_host_get_name(smx_host_t host)
+smx_host_t SIMIX_host_self(void)
 {
+  smx_process_t process = SIMIX_process_self();
+  return (process == NULL) ? NULL : SIMIX_process_get_host(process);
+}
 
-  xbt_assert0((host != NULL)
-	      && (host->simdata != NULL), "Invalid parameters");
+/* needs to be public and without simcall because it is called
+   by exceptions and logging events */
+const char* SIMIX_host_self_get_name(void)
+{
+  smx_host_t host = SIMIX_host_self();
+  if (host == NULL || SIMIX_process_self() == simix_global->maestro_process)
+    return "";
 
-  /* Return data */
-  return (host->name);
+  return SIMIX_host_get_name(host);
 }
 
-/** 
- * \brief Return the location on which the current process is executed.
- *
- * Return the host,  more details in #SIMIX_process_get_host
- * \return SIMIX host
- */
-smx_host_t SIMIX_host_self(void)
+const char* SIMIX_host_get_name(smx_host_t host)
 {
-  return SIMIX_process_get_host(SIMIX_process_self());
+  xbt_assert((host != NULL), "Invalid parameters");
+
+  return host->name;
 }
 
-/*
- * Real function for destroy a host.
- * MSG_host_destroy is just  a front_end that also removes it from 
- * msg_global->host
- */
-void __SIMIX_host_destroy(void* h)
+xbt_dict_t SIMIX_host_get_properties(smx_host_t host)
 {
-  smx_host_t host = (smx_host_t)h;
-  smx_simdata_host_t simdata = NULL;
+  xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 
-  xbt_assert0((host != NULL), "Invalid parameters");
+  return surf_workstation_model->extension.workstation.get_properties(host->host);
+}
 
+double SIMIX_host_get_speed(smx_host_t host)
+{
+  xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 
-  /* Clean Simulator data */
-  simdata = host->simdata;
+  return surf_workstation_model->extension.workstation.
+      get_speed(host->host, 1.0);
+}
 
-  if (xbt_swag_size(simdata->process_list) != 0) {
-    char *msg =
-	bprintf("Shutting down host %s, but it's not empty:", host->name);
-    char *tmp;
-    smx_process_t process = NULL;
+double SIMIX_host_get_available_speed(smx_host_t host)
+{
+  xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 
-    xbt_swag_foreach(process, simdata->process_list) {
-      tmp = bprintf("%s\n\t%s", msg, process->name);
-      free(msg);
-      msg = tmp;
-    }
-    THROW1(arg_error, 0, "%s", msg);
-  }
+  return surf_workstation_model->extension.workstation.
+      get_available_speed(host->host);
+}
 
-  xbt_swag_free(simdata->process_list);
+int SIMIX_host_get_state(smx_host_t host)
+{
+  xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 
-  free(simdata);
+  return surf_workstation_model->extension.workstation.
+      get_state(host->host);
+}
 
-  /* Clean host structure */
-  free(host->name);
-  free(host);
+void* SIMIX_host_self_get_data(void)
+{
+  return SIMIX_host_get_data(SIMIX_host_self());
+}
 
-  return;
+void SIMIX_host_self_set_data(void *data)
+{
+  SIMIX_host_set_data(SIMIX_host_self(), data);
 }
 
-/**
- * \brief Return the current number of #smx_host_t.
- *
- * \return Number of hosts
- */
-int SIMIX_host_get_number(void)
+void* SIMIX_host_get_data(smx_host_t host)
+{
+  xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
+
+  return host->data;
+}
+
+void SIMIX_host_set_data(smx_host_t host, void *data)
 {
-  return (xbt_dict_size(simix_global->host));
+  xbt_assert((host != NULL), "Invalid parameters");
+  xbt_assert((host->data == NULL), "Data already set");
+
+  host->data = data;
 }
 
+smx_action_t SIMIX_host_execute(const char *name, smx_host_t host,
+                                double computation_amount,
+                                double priority)
+{
+  /* alloc structures and initialize */
+  smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
+  action->type = SIMIX_ACTION_EXECUTE;
+  action->name = xbt_strdup(name);
+  action->state = SIMIX_RUNNING;
+  action->execution.host = host;
+
+#ifdef HAVE_TRACING
+  action->category = NULL;
+#endif
+
+  /* set surf's action */
+  if (!MC_IS_ENABLED) {
+    action->execution.surf_exec =
+      surf_workstation_model->extension.workstation.execute(host->host,
+    computation_amount);
+    surf_workstation_model->action_data_set(action->execution.surf_exec, action);
+    surf_workstation_model->set_priority(action->execution.surf_exec, priority);
+  }
 
-/**
- * \brief Return an array of all the #smx_host_t.
- *
- * \return List of all hosts (in a newly allocated table)
- */
-smx_host_t* SIMIX_host_get_table(void) {
-   smx_host_t *res = xbt_new(smx_host_t,xbt_dict_size(simix_global->host));
-   smx_host_t h;
-   xbt_dict_cursor_t c;
-   char *name;
-   int i=0;
-   
-   xbt_dict_foreach(simix_global->host,c,name,h)
-     res[i++] = h;
-   
-   return res;
+  XBT_DEBUG("Create execute action %p", action);
+
+  return action;
 }
 
-/**
- * \brief Return a dict of all the #smx_host_t.
- *
- * \return List of all hosts (as a #xbt_dict_t)
- */
-xbt_dict_t SIMIX_host_get_dict(void) {
-   return simix_global->host;
+smx_action_t SIMIX_host_parallel_execute( const char *name,
+    int host_nb, smx_host_t *host_list,
+    double *computation_amount, double *communication_amount,
+    double amount, double rate)
+{
+  void **workstation_list = NULL;
+  int i;
+
+  /* alloc structures and initialize */
+  smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
+  action->type = SIMIX_ACTION_PARALLEL_EXECUTE;
+  action->name = xbt_strdup(name);
+  action->state = SIMIX_RUNNING;
+  action->execution.host = NULL; /* FIXME: do we need the list of hosts? */
+
+#ifdef HAVE_TRACING
+  action->category = NULL;
+#endif
+
+  /* set surf's action */
+  workstation_list = xbt_new0(void *, host_nb);
+  for (i = 0; i < host_nb; i++)
+    workstation_list[i] = host_list[i]->host;
+
+  /* set surf's action */
+  if (!MC_IS_ENABLED) {
+    action->execution.surf_exec =
+      surf_workstation_model->extension.workstation.
+      execute_parallel_task(host_nb, workstation_list, computation_amount,
+                      communication_amount, rate);
+
+    surf_workstation_model->action_data_set(action->execution.surf_exec, action);
+  }
+  XBT_DEBUG("Create parallel execute action %p", action);
+
+  return action;
 }
 
-/**
- * \brief Return the speed of the processor.
- *
- * Return the speed (in Mflop/s), regardless of the current load on the machine.
- * \param host SIMIX host
- * \return Speed
- */
-double SIMIX_host_get_speed(smx_host_t host)
+void SIMIX_host_execution_destroy(smx_action_t action)
 {
-  xbt_assert0((host != NULL), "Invalid parameters");
+  int destroyed=0;
+  XBT_DEBUG("Destroy action %p", action);
+
+
+  if (action->execution.surf_exec) {
+    destroyed = surf_workstation_model->action_unref(action->execution.surf_exec);
+    action->execution.surf_exec = NULL;
+  }
 
-  return (surf_workstation_model->
-	  extension_public->get_speed(host->simdata->host, 1.0));
+  if (destroyed) {
+    xbt_free(action->name);
+    xbt_mallocator_release(simix_global->action_mallocator, action);
+  }
 }
 
-/**
- * \brief Return the available speed of the processor.
- *
- * Return the available speed (in Mflop/s).
- * \return Speed
- */
-double SIMIX_host_get_available_speed(smx_host_t host)
+void SIMIX_host_execution_cancel(smx_action_t action)
 {
-  xbt_assert0((host != NULL), "Invalid parameters");
+  XBT_DEBUG("Cancel action %p", action);
 
-  return (surf_workstation_model->
-	  extension_public->get_available_speed(host->simdata->host));
+  if (action->execution.surf_exec)
+    surf_workstation_model->action_cancel(action->execution.surf_exec);
 }
 
-/**
- * \brief Return the host by its name
- *
- * Finds a smx_host_t using its name.
- * \param name The name of an host.
- * \return The corresponding host
- */
-smx_host_t SIMIX_host_get_by_name(const char *name)
+double SIMIX_host_execution_get_remains(smx_action_t action)
 {
-  xbt_assert0(((simix_global != NULL)
-	       && (simix_global->host != NULL)),
-	      "Environment not set yet");
+  double result = 0.0;
+
+  if (action->state == SIMIX_RUNNING)
+    result = surf_workstation_model->get_remains(action->execution.surf_exec);
 
-  return xbt_dict_get_or_null(simix_global->host, name);
+  return result;
 }
 
-/**
- * \brief Returns a xbt_dynar_t consisting of the list of properties assigned to this host
- *
- * \param host a host
- * \return the dynamic array consisting of property names
- */
-xbt_dict_t SIMIX_host_get_properties(smx_host_t host)
+e_smx_state_t SIMIX_host_execution_get_state(smx_action_t action)
 {
-  xbt_assert0((host != NULL), "Invalid parameters");
+  return action->state;
+}
+
+void SIMIX_host_execution_set_priority(smx_action_t action, double priority)
+{
+  if(action->execution.surf_exec)
+    surf_workstation_model->set_priority(action->execution.surf_exec, priority);
+}
+
+void SIMIX_pre_host_execution_wait(smx_simcall_t simcall)
+{
+  smx_action_t action = simcall->host_execution_wait.execution;
+
+  XBT_DEBUG("Wait for execution of action %p, state %d", action, (int)action->state);
+
+  /* Associate this simcall to the action */
+  xbt_fifo_push(action->simcalls, simcall);
+  simcall->issuer->waiting_action = action;
+
+  /* set surf's action */
+  if (MC_IS_ENABLED) {
+    action->state = SIMIX_DONE;
+    SIMIX_execution_finish(action);
+    return;
+  }
 
-  return (surf_workstation_model->
-	  common_public->get_properties(host->simdata->host));
+  /* If the action is already finished then perform the error handling */
+  if (action->state != SIMIX_RUNNING)
+    SIMIX_execution_finish(action);
+}
 
+void SIMIX_host_execution_suspend(smx_action_t action)
+{
+  if(action->execution.surf_exec)
+    surf_workstation_model->suspend(action->execution.surf_exec);
 }
 
+void SIMIX_host_execution_resume(smx_action_t action)
+{
+  if(action->execution.surf_exec)
+    surf_workstation_model->resume(action->execution.surf_exec);
+}
 
-/**
- * \brief Return the state of a workstation
- *
- * Return the state of a workstation. Two states are possible, 1 if the host is active or 0 if it has crashed.
- * \param host The SIMIX host
- * \return 1 if host is available or 0 if not.
- */
-int SIMIX_host_get_state(smx_host_t host)
+void SIMIX_execution_finish(smx_action_t action)
 {
-  xbt_assert0((host != NULL), "Invalid parameters");
+  xbt_fifo_item_t item;
+  smx_simcall_t simcall;
+
+  xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
+
+    switch (action->state) {
 
-  return (surf_workstation_model->
-	  extension_public->get_state(host->simdata->host));
+      case SIMIX_DONE:
+        /* do nothing, action done */
+  XBT_DEBUG("SIMIX_execution_finished: execution successful");
+        break;
 
+      case SIMIX_FAILED:
+        XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", simcall->issuer->smx_host->name);
+        SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
+        break;
+
+      case SIMIX_CANCELED:
+        XBT_DEBUG("SIMIX_execution_finished: execution canceled");
+        SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
+        break;
+
+      default:
+        xbt_die("Internal error in SIMIX_execution_finish: unexpected action state %d",
+            (int)action->state);
+    }
+    simcall->issuer->waiting_action = NULL;
+    simcall->host_execution_wait.result = action->state;
+    SIMIX_simcall_answer(simcall);
+  }
+
+  /* We no longer need it */
+  SIMIX_host_execution_destroy(action);
 }
+
+void SIMIX_post_host_execute(smx_action_t action)
+{
+  if (surf_workstation_model->extension.workstation.get_state(action->execution.host->host)==SURF_RESOURCE_OFF) {
+    /* if the host running the action failed, notice it so that the asking process can be killed if it runs on that host itself */
+    action->state = SIMIX_FAILED;
+  } else if (surf_workstation_model->action_state_get(action->execution.surf_exec) == SURF_ACTION_FAILED) {
+    /* If the host running the action didn't fail, then the action was canceled */
+     action->state = SIMIX_CANCELED;
+  } else {
+     action->state = SIMIX_DONE;
+  }
+
+  if (action->execution.surf_exec) {
+    surf_workstation_model->action_unref(action->execution.surf_exec);
+    action->execution.surf_exec = NULL;
+  }
+
+  /* If there are simcalls associated with the action, then answer them */
+  if (xbt_fifo_size(action->simcalls)) {
+    SIMIX_execution_finish(action);
+  }
+}
+
+
+#ifdef HAVE_TRACING
+void SIMIX_set_category(smx_action_t action, const char *category)
+{
+  if (action->state != SIMIX_RUNNING) return;
+  if (action->type == SIMIX_ACTION_EXECUTE){
+    surf_workstation_model->set_category(action->execution.surf_exec, category);
+  }else if (action->type == SIMIX_ACTION_COMMUNICATE){
+    surf_workstation_model->set_category(action->comm.surf_comm, category);
+  }
+}
+#endif
+