/* 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"xbt/sysdep.h"
-#include "xbt/error.h"
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(m_process, msg,
+#include "private.h"
+#include "xbt/sysdep.h"
+#include "xbt/log.h"
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_process, msg,
"Logging specific to MSG (process)");
+/** \defgroup m_process_management Management Functions of Agents
+ * \brief This section describes the agent structure of MSG
+ * (#m_process_t) and the functions for managing it.
+ * \htmlonly <!-- DOXYGEN_NAVBAR_LABEL="Agents" --> \endhtmlonly
+ *
+ * We need to simulate many independent scheduling decisions, so
+ * the concept of <em>process</em> is at the heart of the
+ * simulator. A process may be defined as a <em>code</em>, with
+ * some <em>private data</em>, executing in a <em>location</em>.
+ * \see m_process_t
+ */
+
/******************************** Process ************************************/
+/** \ingroup m_process_management
+ * \brief Creates and runs a new #m_process_t.
+ *
+ * Does exactly the same as #MSG_process_create_with_arguments but without
+ providing standard arguments (\a argc, \a argv, \a start_time, \a kill_time).
+ * \sa MSG_process_create_with_arguments
+ */
+m_process_t MSG_process_create(const char *name,
+ m_process_code_t code, void *data,
+ m_host_t host)
+{
+ return MSG_process_create_with_arguments(name, code, data, host, -1, NULL);
+}
+
+static void MSG_process_cleanup(void *arg)
+{
+
+ while(((m_process_t)arg)->simdata->paje_state) {
+ PAJE_PROCESS_POP_STATE((m_process_t)arg);
+ }
+
+ PAJE_PROCESS_FREE(arg);
+
+ xbt_fifo_remove(msg_global->process_list, arg);
+ xbt_fifo_remove(msg_global->process_to_run, arg);
+ xbt_fifo_remove(((m_process_t) arg)->simdata->host->simdata->process_list, arg);
+ free(((m_process_t) arg)->name);
+ ((m_process_t) arg)->name = NULL;
+ free(((m_process_t) arg)->simdata);
+ ((m_process_t) arg)->simdata = NULL;
+ free(arg);
+}
+
/** \ingroup m_process_management
* \brief Creates and runs a new #m_process_t.
name contains the word get), in \ref m_task_management (to create
or destroy some #m_task_t for example) and in \ref
msg_gos_functions (to handle file transfers and task processing).
- * \param data a pointer to any data may want to attach to the new
+ * \param data a pointer to any data one may want to attach to the new
object. It is for user-level information and can be NULL. It can
be retrieved with the function \ref MSG_process_get_data.
* \param host the location where the new agent is executed.
+ * \param argc first argument passed to \a code
+ * \param argv second argument passed to \a code
* \see m_process_t
* \return The new corresponding object.
*/
-m_process_t MSG_process_create(const char *name,
- m_process_code_t code, void *data,
- m_host_t host)
-{
- return MSG_process_create_with_arguments(name, code, data, host, -1, NULL);
-}
-
-static void MSG_process_cleanup(void *arg)
-{
- xbt_fifo_remove(msg_global->process_list, arg);
- xbt_fifo_remove(msg_global->process_to_run, arg);
- xbt_fifo_remove(((m_process_t) arg)->simdata->host->simdata->process_list, arg);
- xbt_free(((m_process_t) arg)->name);
- xbt_free(((m_process_t) arg)->simdata);
- xbt_free(arg);
-}
-
m_process_t MSG_process_create_with_arguments(const char *name,
m_process_code_t code, void *data,
m_host_t host, int argc, char **argv)
simdata_process_t simdata = xbt_new0(s_simdata_process_t,1);
m_process_t process = xbt_new0(s_m_process_t,1);
m_process_t self = NULL;
- static int PID = 1;
xbt_assert0(((code != NULL) && (host != NULL)), "Invalid parameters");
/* Simulator Data */
- simdata->PID = PID++;
+ simdata->PID = msg_global->PID++;
simdata->host = host;
simdata->waiting_task = NULL;
simdata->argc = argc;
process->simdata = simdata;
process->data = data;
- xbt_fifo_push(host->simdata->process_list, process);
+ xbt_fifo_unshift(host->simdata->process_list, process);
- /* /////////////// FIX du current_process !!! ////////////// */
+ /* *************** FIX du current_process !!! *************** */
self = msg_global->current_process;
xbt_context_start(process->simdata->context);
msg_global->current_process = self;
- xbt_fifo_push(msg_global->process_list, process);
- xbt_fifo_push(msg_global->process_to_run, process);
+ xbt_fifo_unshift(msg_global->process_list, process);
+ DEBUG2("Inserting %s(%s) in the to_run list",process->name,
+ host->name);
+ xbt_fifo_unshift(msg_global->process_to_run, process);
+
+ PAJE_PROCESS_NEW(process);
return process;
}
-void MSG_process_free(m_process_t process)
+/** \ingroup m_process_management
+ * \param process poor victim
+ *
+ * This function simply kills a \a process... scarry isn't it ? :)
+ */
+void MSG_process_kill(m_process_t process)
{
+ int i;
+ simdata_process_t p_simdata = process->simdata;
+ simdata_host_t h_simdata= p_simdata->host->simdata;
+ int _cursor;
+ m_process_t proc = NULL;
+
+ DEBUG3("Killing %s(%d) on %s",process->name, p_simdata->PID,
+ p_simdata->host->name);
+
+ for (i=0; i<msg_global->max_channel; i++) {
+ if (h_simdata->sleeping[i] == process) {
+ h_simdata->sleeping[i] = NULL;
+ break;
+ }
+ }
+
+ if(p_simdata->waiting_task) {
+ xbt_dynar_foreach(p_simdata->waiting_task->simdata->sleeping,_cursor,proc) {
+ if(proc==process)
+ xbt_dynar_remove_at(p_simdata->waiting_task->simdata->sleeping,_cursor,&proc);
+ }
+ if(p_simdata->waiting_task->simdata->compute)
+ surf_workstation_resource->common_public->
+ action_free(p_simdata->waiting_task->simdata->compute);
+ else if (p_simdata->waiting_task->simdata->comm) {
+ surf_workstation_resource->common_public->
+ action_change_state(p_simdata->waiting_task->simdata->comm,SURF_ACTION_FAILED);
+ surf_workstation_resource->common_public->
+ action_free(p_simdata->waiting_task->simdata->comm);
+ } else {
+ xbt_die("UNKNOWN STATUS. Please report this bug.");
+ }
+ }
+
+ if ((i==msg_global->max_channel) && (process!=MSG_process_self()) &&
+ (!p_simdata->waiting_task)) {
+ xbt_die("UNKNOWN STATUS. Please report this bug.");
+ }
+
+ xbt_fifo_remove(msg_global->process_to_run,process);
xbt_fifo_remove(msg_global->process_list,process);
- xbt_context_free(process->simdata->context);
- MSG_process_cleanup(process);
+ xbt_context_kill(process->simdata->context);
+
+ if(process==MSG_process_self()) {
+ /* I just killed myself */
+ xbt_context_yield();
+ }
}
/** \ingroup m_process_management
xbt_fifo_remove(simdata->host->simdata->process_list,process);
simdata->host = host;
- xbt_fifo_push(host->simdata->process_list,process);
+ xbt_fifo_unshift(host->simdata->process_list,process);
return MSG_OK;
}
return (((simdata_process_t) process->simdata)->PID);
}
-
/** \ingroup m_process_management
* \brief Returns the process ID of the parent of \a process.
*
*/
m_process_t MSG_process_self(void)
{
- return msg_global->current_process;
+ return msg_global ? msg_global->current_process : NULL;
}
/** \ingroup m_process_management
{
simdata_process_t simdata = NULL;
simdata_task_t simdata_task = NULL;
- int i;
+
+ XBT_IN2("(%p(%s))", process, process->name);
xbt_assert0(((process) && (process->simdata)), "Invalid parameters");
+ PAJE_PROCESS_PUSH_STATE(process,"S",NULL);
+
if(process!=MSG_process_self()) {
simdata = process->simdata;
simdata_task = simdata->waiting_task->simdata;
simdata->suspended = 1;
- if(simdata->blocked) return MSG_OK;
+ if(simdata->blocked) {
+ XBT_OUT;
+ return MSG_OK;
+ }
xbt_assert0(((simdata_task->compute)||(simdata_task->comm))&&
!((simdata_task->compute)&&(simdata_task->comm)),
MSG_task_destroy(dummy);
}
+ XBT_OUT;
return MSG_OK;
}
{
simdata_process_t simdata = NULL;
simdata_task_t simdata_task = NULL;
- int i;
xbt_assert0(((process != NULL) && (process->simdata)), "Invalid parameters");
CHECK_HOST();
+ XBT_IN2("(%p(%s))", process, process->name);
+
+ if(process == MSG_process_self()) {
+ XBT_OUT;
+ MSG_RETURN(MSG_OK);
+ }
+
simdata = process->simdata;
if(simdata->blocked) {
+ PAJE_PROCESS_POP_STATE(process);
+
simdata->suspended = 0; /* He'll wake up by itself */
+ XBT_OUT;
MSG_RETURN(MSG_OK);
}
if(!(simdata->waiting_task)) {
xbt_assert0(0,"Process not waiting for anything else. Weird !");
+ XBT_OUT;
return MSG_WARNING;
}
simdata_task = simdata->waiting_task->simdata;
- if(simdata_task->compute)
+ if(simdata_task->compute) {
surf_workstation_resource->common_public->resume(simdata_task->compute);
- else
+ PAJE_PROCESS_POP_STATE(process);
+ }
+ else {
+ PAJE_PROCESS_POP_STATE(process);
surf_workstation_resource->common_public->resume(simdata_task->comm);
+ }
+ XBT_OUT;
MSG_RETURN(MSG_OK);
}
* This checks whether a process is suspended or not by inspecting the
* task on which it was waiting for the completion.
*/
-int MSG_process_isSuspended(m_process_t process)
+int MSG_process_is_suspended(m_process_t process)
{
xbt_assert0(((process != NULL) && (process->simdata)), "Invalid parameters");
return (process->simdata->suspended);
}
-
-
-
-
-MSG_error_t __MSG_process_block(void)
+int __MSG_process_block(double max_duration, const char *info)
{
m_process_t process = MSG_process_self();
-
m_task_t dummy = MSG_TASK_UNINITIALIZED;
- dummy = MSG_task_create("blocked", 0.0, 0, NULL);
+ char blocked_name[512];
+ snprintf(blocked_name,512,"blocked [%s] (%s:%s)",
+ info, process->name, process->simdata->host->name);
+
+ XBT_IN1(": max_duration=%g",max_duration);
+
+ dummy = MSG_task_create(blocked_name, 0.0, 0, NULL);
+ PAJE_PROCESS_PUSH_STATE(process,"B",NULL);
+
process->simdata->blocked=1;
__MSG_task_execute(process,dummy);
surf_workstation_resource->common_public->suspend(dummy->simdata->compute);
+ if(max_duration>=0)
+ surf_workstation_resource->common_public->set_max_duration(dummy->simdata->compute,
+ max_duration);
__MSG_wait_for_computation(process,dummy);
+ MSG_task_destroy(dummy);
process->simdata->blocked=0;
- if(process->simdata->suspended)
+ if(process->simdata->suspended) {
+ DEBUG0("I've been suspended in the meantime");
MSG_process_suspend(process);
-
- MSG_task_destroy(dummy);
+ DEBUG0("I've been resumed, let's keep going");
+ }
- return MSG_OK;
+ PAJE_PROCESS_POP_STATE(process);
+
+ XBT_OUT;
+ return 1;
}
MSG_error_t __MSG_process_unblock(m_process_t process)
{
simdata_process_t simdata = NULL;
simdata_task_t simdata_task = NULL;
- int i;
xbt_assert0(((process != NULL) && (process->simdata)), "Invalid parameters");
CHECK_HOST();
+ XBT_IN2(": %s unblocking %s", MSG_process_self()->name,process->name);
+
simdata = process->simdata;
if(!(simdata->waiting_task)) {
xbt_assert0(0,"Process not waiting for anything else. Weird !");
+ XBT_OUT;
return MSG_WARNING;
}
simdata_task = simdata->waiting_task->simdata;
surf_workstation_resource->common_public->resume(simdata_task->compute);
+ XBT_OUT;
+
MSG_RETURN(MSG_OK);
}
