*/
/******************************** Process ************************************/
-void __MSG_process_cleanup(smx_process_t smx_proc)
+void MSG_process_cleanup_from_SIMIX(smx_process_t smx_proc)
{
- /* arg is a pointer to a simix process, we can get the msg process with the field data */
- m_process_t proc = SIMIX_req_process_get_data(smx_proc);
-#ifdef HAVE_TRACING
- TRACE_msg_process_end(proc);
-#endif
- xbt_fifo_remove(msg_global->process_list, proc);
- SIMIX_process_cleanup(smx_proc);
- if (proc->name) {
- free(proc->name);
- proc->name = NULL;
+ simdata_process_t msg_proc;
+
+ if (smx_proc == SIMIX_process_self()) {
+ /* avoid a SIMIX request if this function is called by the process itself */
+ msg_proc = SIMIX_process_self_get_data();
}
- if (proc->simdata) {
- free(proc->simdata);
- proc->simdata = NULL;
+ else {
+ msg_proc = SIMIX_req_process_get_data(smx_proc);
}
- free(proc);
- return;
+#ifdef HAVE_TRACING
+ TRACE_msg_process_end(smx_proc);
+#endif
+
+ xbt_free(msg_proc);
}
/* This function creates a MSG process. It has the prototype enforced by SIMIX_function_register_process_create */
-void *_MSG_process_create_from_SIMIX(const char *name,
- xbt_main_func_t code, void *data,
- char *hostname, int argc, char **argv,
- xbt_dict_t properties)
+void MSG_process_create_from_SIMIX(smx_process_t* process, const char *name,
+ xbt_main_func_t code, void *data,
+ const char *hostname, int argc, char **argv,
+ xbt_dict_t properties)
{
m_host_t host = MSG_get_host_by_name(hostname);
- return (void *) MSG_process_create_with_environment(name, code, data,
+ m_process_t p = MSG_process_create_with_environment(name, code, data,
host, argc, argv,
properties);
+ *((m_process_t*) process) = p;
}
/** \ingroup m_process_management
int argc, char **argv,
xbt_dict_t properties)
{
- simdata_process_t simdata = NULL;
- m_process_t process = xbt_new0(s_m_process_t, 1);
- smx_process_t smx_process = NULL;
- xbt_assert0(((code != NULL) && (host != NULL)), "Invalid parameters");
-
- smx_process = SIMIX_process_create(name, code, (void *) process, host->name,
- argc, argv, properties);
- if (!smx_process) {
- xbt_free(process);
- return NULL;
- }
+ xbt_assert(code != NULL && host != NULL, "Invalid parameters");
+ simdata_process_t simdata = xbt_new0(s_simdata_process_t, 1);
+ m_process_t process;
- simdata = xbt_new0(s_simdata_process_t, 1);
-
- /* Simulator Data */
+ /* Simulator data for MSG */
simdata->PID = msg_global->PID++;
simdata->waiting_action = NULL;
simdata->waiting_task = NULL;
simdata->m_host = host;
simdata->argc = argc;
simdata->argv = argv;
- simdata->s_process = smx_process;
+ simdata->data = data;
+ simdata->last_errno = MSG_OK;
if (SIMIX_process_self()) {
- simdata->PPID = MSG_process_get_PID(SIMIX_process_self_get_data());
+ simdata->PPID = MSG_process_get_PID(MSG_process_self());
} else {
simdata->PPID = -1;
}
- simdata->last_errno = MSG_OK;
+#ifdef HAVE_TRACING
+ TRACE_msg_process_create(name, simdata->PID, simdata->m_host);
+#endif
- /* Process structure */
- process->name = xbt_strdup(name);
- process->simdata = simdata;
- process->data = data;
+ /* Let's create the process: SIMIX may decide to start it right now,
+ * even before returning the flow control to us */
+ SIMIX_req_process_create(&process, name, code, simdata, host->name,
+ argc, argv, properties);
- xbt_fifo_unshift(msg_global->process_list, process);
+ if (!process) {
+ /* Undo everything we have just changed */
+ msg_global->PID--;
+ xbt_free(simdata);
+ return NULL;
+ }
return process;
-
}
-void _MSG_process_kill_from_SIMIX(void *p)
+void MSG_process_kill_from_SIMIX(smx_process_t p)
{
#ifdef HAVE_TRACING
- TRACE_msg_process_kill((m_process_t) p);
+ TRACE_msg_process_kill(p);
#endif
- MSG_process_kill((m_process_t) p);
+ MSG_process_kill(p);
}
/** \ingroup m_process_management
* \param process poor victim
*
- * This function simply kills a \a process... scarry isn't it ? :)
+ * This function simply kills a \a process... scary isn't it ? :)
*/
void MSG_process_kill(m_process_t process)
{
- simdata_process_t p_simdata = process->simdata;
-
#ifdef HAVE_TRACING
TRACE_msg_process_kill(process);
#endif
- DEBUG3("Killing %s(%d) on %s",
- process->name, p_simdata->PID, p_simdata->m_host->name);
-
+ /* FIXME: why do we only cancel communication actions? is this useful? */
+ simdata_process_t p_simdata = SIMIX_req_process_get_data(process);
if (p_simdata->waiting_task && p_simdata->waiting_task->simdata->comm) {
SIMIX_req_comm_cancel(p_simdata->waiting_task->simdata->comm);
}
- xbt_fifo_remove(msg_global->process_list, process);
- SIMIX_req_process_kill(process->simdata->s_process);
+ SIMIX_req_process_kill(process);
return;
}
* This function checks whether \a process and \a host are valid pointers
and change the value of the #m_host_t on which \a process is running.
*/
-MSG_error_t MSG_process_change_host(m_host_t host)
+MSG_error_t MSG_process_migrate(m_process_t process, m_host_t host)
{
- m_process_t process = MSG_process_self();
- m_host_t now = process->simdata->m_host;
- process->simdata->m_host = host;
+ simdata_process_t simdata = SIMIX_req_process_get_data(process);
+ simdata->m_host = host;
#ifdef HAVE_TRACING
+ m_host_t now = simdata->m_host;
TRACE_msg_process_change_host(process, now, host);
#endif
- SIMIX_req_process_change_host(process->simdata->s_process, now->name,
- host->name);
+ SIMIX_req_process_change_host(process, host->simdata->smx_host);
return MSG_OK;
}
/** \ingroup m_process_management
- * \brief Return the user data of a #m_process_t.
+ * \brief Returns the user data of a process.
*
* This function checks whether \a process is a valid pointer or not
- and return the user data associated to \a process if it is possible.
+ and returns the user data associated to this process.
*/
-void *MSG_process_get_data(m_process_t process)
+void* MSG_process_get_data(m_process_t process)
{
- xbt_assert0((process != NULL), "Invalid parameters");
+ xbt_assert(process != NULL, "Invalid parameter");
- return (process->data);
+ /* get from SIMIX the MSG process data, and then the user data */
+ simdata_process_t simdata = SIMIX_req_process_get_data(process);
+ return simdata->data;
}
/** \ingroup m_process_management
- * \brief Set the user data of a #m_process_t.
+ * \brief Sets the user data of a process.
*
* This function checks whether \a process is a valid pointer or not
- and set the user data associated to \a process if it is possible.
+ and sets the user data associated to this process.
*/
MSG_error_t MSG_process_set_data(m_process_t process, void *data)
{
- xbt_assert0((process != NULL), "Invalid parameters");
+ xbt_assert(process != NULL, "Invalid parameter");
- process->data = data;
+ simdata_process_t simdata = SIMIX_req_process_get_data(process);
+ simdata->data = data;
return MSG_OK;
}
*/
m_host_t MSG_process_get_host(m_process_t process)
{
- xbt_assert0(((process != NULL)
- && (process->simdata)), "Invalid parameters");
+ xbt_assert(process != NULL, "Invalid parameter");
- return (((simdata_process_t) process->simdata)->m_host);
+ simdata_process_t simdata = SIMIX_req_process_get_data(process);
+ return simdata->m_host;
}
/** \ingroup m_process_management
*/
m_process_t MSG_process_from_PID(int PID)
{
- xbt_fifo_item_t i = NULL;
- m_process_t process = NULL;
-
- xbt_fifo_foreach(msg_global->process_list, i, process, m_process_t) {
- if (MSG_process_get_PID(process) == PID)
- return process;
- }
- return NULL;
+ /* FIXME: reimplement this function using SIMIX when we have a good PID.
+ * In the meantime, I guess nobody uses it so it should not break anything. */
+ THROW_UNIMPLEMENTED;
}
/** \ingroup m_process_management
*/
int MSG_process_get_PID(m_process_t process)
{
- /* Do not raise an exception here: this function is used in the logs,
- and it will be called back by the exception handling stuff */
- if (process == NULL || process->simdata == NULL)
+ /* Do not raise an exception here: this function is called by the logs
+ * and the exceptions, so it would be called back again and again */
+ if (process == NULL) {
return 0;
+ }
+
+ simdata_process_t simdata = SIMIX_req_process_get_data(process);
- return (((simdata_process_t) process->simdata)->PID);
+ return simdata != NULL ? simdata->PID : 0;
}
/** \ingroup m_process_management
*/
int MSG_process_get_PPID(m_process_t process)
{
- xbt_assert0(((process != NULL)
- && (process->simdata)), "Invalid parameters");
+ xbt_assert(process != NULL, "Invalid parameter");
- return (((simdata_process_t) process->simdata)->PPID);
+ simdata_process_t simdata = SIMIX_req_process_get_data(process);
+
+ return simdata->PPID;
}
/** \ingroup m_process_management
*/
const char *MSG_process_get_name(m_process_t process)
{
- xbt_assert0(process, "Invalid parameter: process is NULL");
- xbt_assert0(process->simdata,
- "Invalid parameter: process->simdata is NULL");
+ xbt_assert(process, "Invalid parameter");
- return (process->name);
+ return SIMIX_req_process_get_name(process);
}
/** \ingroup m_process_management
*/
xbt_dict_t MSG_process_get_properties(m_process_t process)
{
- xbt_assert0((process != NULL), "Invalid parameters");
+ xbt_assert(process != NULL, "Invalid parameter");
- return (SIMIX_req_process_get_properties
- (((simdata_process_t) process->simdata)->s_process));
+ return SIMIX_req_process_get_properties(process);
}
*/
int MSG_process_self_PID(void)
{
- return (MSG_process_get_PID(MSG_process_self()));
+ return MSG_process_get_PID(MSG_process_self());
}
/** \ingroup m_process_management
*/
int MSG_process_self_PPID(void)
{
- return (MSG_process_get_PPID(MSG_process_self()));
+ return MSG_process_get_PPID(MSG_process_self());
}
/** \ingroup m_process_management
- * \brief Return the current agent.
+ * \brief Return the current process.
*
* This function returns the currently running #m_process_t.
*/
m_process_t MSG_process_self(void)
{
- /* we cannot make a SIMIX request here because this may create an exception or a logging
- event, and both mechanisms call MSG_process_self() again (via xbt_getpid()) */
- return (m_process_t) SIMIX_process_self_get_data();
+ return SIMIX_process_self();
}
/** \ingroup m_process_management
*/
MSG_error_t MSG_process_suspend(m_process_t process)
{
- xbt_assert0(((process != NULL)
- && (process->simdata)), "Invalid parameters");
+ xbt_assert(process != NULL, "Invalid parameter");
CHECK_HOST();
#ifdef HAVE_TRACING
TRACE_msg_process_suspend(process);
#endif
- SIMIX_req_process_suspend(process->simdata->s_process);
+ SIMIX_req_process_suspend(process);
MSG_RETURN(MSG_OK);
}
*/
MSG_error_t MSG_process_resume(m_process_t process)
{
-
- xbt_assert0(((process != NULL)
- && (process->simdata)), "Invalid parameters");
+ xbt_assert(process != NULL, "Invalid parameter");
CHECK_HOST();
#ifdef HAVE_TRACING
TRACE_msg_process_resume(process);
#endif
- SIMIX_req_process_resume(process->simdata->s_process);
+ SIMIX_req_process_resume(process);
MSG_RETURN(MSG_OK);
}
*/
int MSG_process_is_suspended(m_process_t process)
{
- xbt_assert0(((process != NULL)
- && (process->simdata)), "Invalid parameters");
- return SIMIX_req_process_is_suspended(process->simdata->s_process);
+ xbt_assert(process != NULL, "Invalid parameter");
+ return SIMIX_req_process_is_suspended(process);
}
-
smx_context_t MSG_process_get_smx_ctx(m_process_t process) {
- return SIMIX_process_get_context(process->simdata->s_process);
+ return SIMIX_process_get_context(process);
}
