XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_process, simix,
"Logging specific to SIMIX (process)");
-/******************************** Process ************************************/
/**
- * \brief Creates and runs a new #smx_process_t.
- *
- * Does exactly the same as #SIMIX_process_create_with_arguments but without
- providing standard arguments (\a argc, \a argv).
- * \see SIMIX_process_create_with_arguments
+ * \brief Move a process to the list of process to destroy. *
*/
-
void SIMIX_process_cleanup(void *arg)
{
xbt_swag_remove(arg, simix_global->process_to_run);
xbt_swag_remove(arg, simix_global->process_list);
+ xbt_swag_remove(arg, ((smx_process_t)arg)->smx_host->process_list);
xbt_swag_insert(arg, simix_global->process_to_destroy);
}
+/**
+ * Garbage collection
+ *
+ * Should be called some time to time to free the memory allocated for processes
+ * that have finished (or killed).
+ */
+void SIMIX_process_empty_trash(void)
+{
+ smx_process_t process = NULL;
+
+ while ((process = xbt_swag_extract(simix_global->process_to_destroy))){
+ SIMIX_context_free(process->context);
+
+ /* Free the exception allocated at creation time */
+ if (process->exception)
+ free(process->exception);
+
+ free(process->name);
+ process->name = NULL;
+ free(process);
+ }
+}
/**
* \brief Creates and runs the maestro process
- *
*/
-
-void __SIMIX_create_maestro_process()
+void SIMIX_create_maestro_process()
{
smx_process_t process = NULL;
process = xbt_new0(s_smx_process_t, 1);
/* Process data */
- process->name = (char *)"maestro";
+ process->name = (char *)"";
- /*Create the right context type (FIXME: check the return value for success)*/
- SIMIX_context_create_maestro(&process);
+ process->exception = xbt_new(ex_ctx_t, 1);
+ XBT_CTX_INITIALIZE(process->exception);
+
+ /* Create a dummy context for maestro */
+ process->context = SIMIX_context_new(NULL, 0, NULL, NULL, NULL);
/* Set it as the maestro process */
simix_global->maestro_process = process;
-
- /* Now insert it in the global process list and in the process to run list */
- /* FIXME should it be included in the process_list ??? */
- xbt_swag_insert(process, simix_global->process_list);
+ simix_global->current_process = process;
return;
}
-/**
+/**
* \brief Creates and runs a new #smx_process_t.
*
* A constructor for #m_process_t taking four arguments and returning the corresponding object. The structure (and the corresponding thread) is created, and put in the list of ready process.
*
* \param name a name for the object. It is for user-level information and can be NULL.
-* \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 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
char **argv, xbt_dict_t properties)
{
smx_process_t process = NULL;
- smx_process_t self = NULL;
smx_host_t host = SIMIX_host_get_by_name(hostname);
DEBUG2("Start process %s on host %s", name, hostname);
/* Process data */
process->name = xbt_strdup(name);
process->smx_host = host;
- process->argc = argc;
- process->argv = argv;
process->mutex = NULL;
process->cond = NULL;
-
- /*Create the right context type (FIXME: check the return value for success)*/
- SIMIX_context_new(&process, code);
-
+ process->iwannadie = 0;
process->data = data;
- process->cleanup_func = simix_global->cleanup_process_function;
- process->cleanup_arg = process;
+
+ VERB1("Create context %s", process->name);
+ process->context = SIMIX_context_new(code, argc, argv,
+ simix_global->cleanup_process_function,
+ process);
+
+ process->exception = xbt_new(ex_ctx_t, 1);
+ XBT_CTX_INITIALIZE(process->exception);
/* Add properties */
process->properties = properties;
/* Add the process to it's host process list */
xbt_swag_insert(process, host->process_list);
- /* fix current_process, about which SIMIX_context_start mocks around */
- self = simix_global->current_process;
- SIMIX_context_start(process);
- simix_global->current_process = self;
-
+ 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);
DEBUG2("Inserting %s(%s) in the to_run list", process->name, host->name);
return process;
}
-/**
- * \brief Creates and runs a new #smx_process_t hosting a JAVA thread
- *
- * Warning: this should only be used in libsimgrid4java, since it create
- * a context with no code, which leads to segfaults in plain libsimgrid
- */
-void SIMIX_jprocess_create(const char *name, smx_host_t host,
- void *data,
- void *jprocess, void *jenv, smx_process_t * res)
-{
- smx_process_t process = xbt_new0(s_smx_process_t, 1);
- smx_process_t self = NULL;
-
- /* HACK: We need this trick because when we xbt_context_new() do
- syncronization stuff, the s_process field in the m_process needs
- to have a valid value, and we call xbt_context_new() before
- returning, of course, ie, before providing a right value to the
- caller (Java_simgrid_msg_Msg_processCreate) have time to store it
- in place. This way, we initialize the m_process->simdata->s_process
- field ourself ASAP.
-
- All this would be much simpler if the synchronization stuff would be done
- in the JAVA world, I think.
- */
- *res = process;
-
- DEBUG5("jprocess_create(name=%s,host=%p,data=%p,jproc=%p,jenv=%p)",
- name, host, data, jprocess, jenv);
- xbt_assert0(host, "Invalid parameters");
-
- /* Process data */
- process->name = xbt_strdup(name);
- process->smx_host = host;
- process->argc = 0;
- process->argv = NULL;
- process->mutex = NULL;
- process->cond = NULL;
- SIMIX_context_new(&process, jprocess);
- process->data = data;
-
- /* Add the process to it's host process list */
- xbt_swag_insert(&process, host->process_list);
-
- /* fix current_process, about which xbt_context_start mocks around */
- self = simix_global->current_process;
- SIMIX_context_start(process);
- simix_global->current_process = self;
-
- /* Now insert it in the global process list and in the process to run list */
- xbt_swag_insert(process, simix_global->process_list);
- DEBUG2("Inserting %s(%s) in the to_run list", process->name, host->name);
- xbt_swag_insert(process, simix_global->process_to_run);
-}
-
/** \brief Kill a SIMIX process
*
* This function simply kills a \a process... scarry isn't it ? :).
*/
void SIMIX_process_kill(smx_process_t process)
{
- DEBUG2("Killing process %s on %s", process->name,
- process->smx_host->name);
+ DEBUG2("Killing process %s on %s", process->name, process->smx_host->name);
/* Cleanup if we were waiting for something */
if (process->mutex)
if (process->cond)
xbt_swag_remove(process, process->cond->sleeping);
- xbt_swag_remove(process, simix_global->process_to_run);
- xbt_swag_remove(process, simix_global->process_list);
-
DEBUG2("%p here! killing %p", simix_global->current_process, process);
- SIMIX_context_kill(process);
- if (process == SIMIX_process_self()) {
- /* I just killed myself */
- SIMIX_context_yield();
- }
+ process->iwannadie = 1;
+
+ /* If I'm killing myself then stop otherwise schedule the process to kill */
+ if (process == SIMIX_process_self())
+ SIMIX_context_stop(process->context);
+ else
+ SIMIX_process_schedule(process);
+
}
/**
void *SIMIX_process_get_data(smx_process_t process)
{
xbt_assert0((process != NULL), "Invalid parameters");
-
return (process->data);
}
*/
int SIMIX_process_is_suspended(smx_process_t process)
{
- xbt_assert0(((process != NULL), "Invalid parameters");
+ xbt_assert0((process != NULL), "Invalid parameters");
return (process->suspended);
}
{
return xbt_swag_size(simix_global->process_list);
}
+
+/**
+ * Calling this function makes the process process to yield. The process
+ * that scheduled it returns from __SIMIX_process_schedule as if nothing
+ * had happened.
+ *
+ * Only the processes can call this function, giving back the control
+ * to the maestro
+ */
+void SIMIX_process_yield(void)
+{
+ DEBUG1("Yield process '%s'", simix_global->current_process->name);
+ xbt_assert0((simix_global->current_process != simix_global->maestro_process),
+ "You are not supposed to run this function here!");
+
+ SIMIX_context_suspend(simix_global->current_process->context);
+
+ if (simix_global->current_process->iwannadie)
+ SIMIX_context_stop(simix_global->current_process->context);
+}
+
+void SIMIX_process_schedule(smx_process_t new_process)
+{
+ 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);
+
+ /* restore the current process to the previously saved process */
+ simix_global->current_process = old_process;
+}
+
+/* callback: context fetching */
+ex_ctx_t *SIMIX_process_get_exception(void)
+{
+ return simix_global->current_process->exception;
+}
+
+/* callback: termination */
+void SIMIX_process_exception_terminate(xbt_ex_t * e)
+{
+ xbt_ex_display(e);
+ abort();
+}
+
+
