-/* $Id$ */
-
-/* Copyright (c) 2002,2003,2004 Arnaud Legrand. 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_process, simix,
- "Logging specific to SIMIX (process)");
+ "Logging specific to SIMIX (process)");
+
+unsigned long simix_process_maxpid = 0;
-/******************************** Process ************************************/
/**
- * \brief Creates and runs a new #smx_process_t.
+ * \brief Returns the current agent.
*
- * 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
+ * This functions returns the currently running SIMIX process.
+ *
+ * \return The SIMIX process
*/
+XBT_INLINE smx_process_t SIMIX_process_self(void)
+{
+ smx_context_t self_context = SIMIX_context_self();
+ return self_context ? SIMIX_context_get_data(self_context) : NULL;
+}
-void SIMIX_process_cleanup(void *arg)
+/**
+ * \brief Returns whether a process has pending asynchronous communications.
+ * \return true if there are asynchronous communications in this process
+ */
+int SIMIX_process_has_pending_comms(smx_process_t process) {
+
+ return xbt_fifo_size(process->comms) > 0;
+}
+
+/**
+ * \brief Moves a process to the list of processes to destroy.
+ */
+void SIMIX_process_cleanup(smx_process_t process)
{
- xbt_swag_remove(arg, simix_global->process_list);
- xbt_swag_remove(arg, simix_global->process_to_run);
- xbt_swag_remove(arg, ((smx_process_t) arg)->simdata->host->simdata->process_list);
- free(((smx_process_t) arg)->name);
- ((smx_process_t) arg)->name = NULL;
+ XBT_DEBUG("Cleanup process %s (%p), waiting action %p",
+ process->name, process, process->waiting_action);
+
+ /* cancel non-blocking communications */
+ smx_action_t action;
+ while ((action = xbt_fifo_pop(process->comms))) {
+
+ /* make sure no one will finish the comm after this process is destroyed,
+ * because src_proc or dst_proc would be an invalid pointer */
+ SIMIX_comm_cancel(action);
+
+ if (action->comm.src_proc == process) {
+ XBT_DEBUG("Found an unfinished send comm %p (detached = %d), state %d, src = %p, dst = %p",
+ action, action->comm.detached, (int)action->state, action->comm.src_proc, action->comm.dst_proc);
+ action->comm.src_proc = NULL;
+
+ if (action->comm.detached) {
+ if (action->comm.refcount == 0) {
+ XBT_DEBUG("Increase the refcount before destroying it since it's detached");
+ /* I'm not supposed to destroy a detached comm from the sender side,
+ * unless there is no receiver matching the rdv */
+ action->comm.refcount++;
+ SIMIX_comm_destroy(action);
+ }
+ else {
+ XBT_DEBUG("Don't destroy it since its refcount is %d", action->comm.refcount);
+ }
+ } else {
+ SIMIX_comm_destroy(action);
+ }
+ }
+ else if (action->comm.dst_proc == process){
+ XBT_DEBUG("Found an unfinished recv comm %p, state %d, src = %p, dst = %p",
+ action, (int)action->state, action->comm.src_proc, action->comm.dst_proc);
+ action->comm.dst_proc = NULL;
+
+ if (action->comm.detached && action->comm.refcount == 1
+ && action->comm.src_proc != NULL) {
+ /* the comm will be freed right now, remove it from the sender */
+ xbt_fifo_remove(action->comm.src_proc->comms, action);
+ }
+ SIMIX_comm_destroy(action);
+ }
+ else {
+ xbt_die("Communication action %p is in my list but I'm not the sender "
+ "or the receiver", action);
+ }
+ }
- free(((smx_process_t) arg)->simdata);
- ((smx_process_t) arg)->simdata = NULL;
- free(arg);
+ /*xbt_swag_remove(process, simix_global->process_to_run);*/
+ xbt_swag_remove(process, simix_global->process_list);
+ xbt_swag_remove(process, process->smx_host->process_list);
+ xbt_swag_insert(process, simix_global->process_to_destroy);
}
/**
- * \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.
+ * Garbage collection
*
- * \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 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
- * \param clean_process_function The cleanup function of user process. It will be called when the process finish. This function have to call the SIMIX_process_cleanup.
- * \see smx_process_t
- * \return The new corresponding object.
+ * Should be called some time to time to free the memory allocated for processes
+ * that have finished (or killed).
*/
-smx_process_t SIMIX_process_create(const char *name,
- smx_process_code_t code, void *data,
- const char * hostname, int argc, char **argv, void * clean_process_function)
-{
- smx_simdata_process_t simdata = xbt_new0(s_smx_simdata_process_t,1);
- smx_process_t process = xbt_new0(s_smx_process_t,1);
- smx_process_t self = NULL;
- smx_host_t host = SIMIX_host_get_by_name(hostname);
-
- xbt_assert0(((code != NULL) && (host != NULL)), "Invalid parameters");
- /* Simulator Data */
-
- simdata->host = host;
- simdata->mutex = NULL;
- simdata->cond = NULL;
- simdata->argc = argc;
- simdata->argv = argv;
- if (clean_process_function) {
- simdata->context = xbt_context_new(code, NULL, NULL,
- clean_process_function, process,
- simdata->argc, simdata->argv);
- }
- else {
- simdata->context = xbt_context_new(code, NULL, NULL,
- SIMIX_process_cleanup, process,
- simdata->argc, simdata->argv);
- }
+void SIMIX_process_empty_trash(void)
+{
+ smx_process_t process = NULL;
- /* Process structure */
- process->name = xbt_strdup(name);
- process->simdata = simdata;
- process->data = data;
+ while ((process = xbt_swag_extract(simix_global->process_to_destroy))) {
+ SIMIX_context_free(process->context);
- xbt_swag_insert(process, host->simdata->process_list);
+ /* Free the exception allocated at creation time */
+ free(process->running_ctx);
+ xbt_dict_free(&process->properties);
- /* *************** FIX du current_process !!! *************** */
- self = simix_global->current_process;
- xbt_context_start(process->simdata->context);
- simix_global->current_process = self;
+ xbt_fifo_free(process->comms);
- 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);
+ free(process->name);
+ free(process);
+ }
+}
- return process;
+/**
+ * \brief Creates and runs the maestro process
+ */
+void SIMIX_create_maestro_process()
+{
+ smx_process_t maestro = NULL;
+
+ /* Create maestro process and intilialize it */
+ maestro = xbt_new0(s_smx_process_t, 1);
+ maestro->pid = simix_process_maxpid++;
+ maestro->name = (char *) "";
+ maestro->running_ctx = xbt_new(xbt_running_ctx_t, 1);
+ XBT_RUNNING_CTX_INITIALIZE(maestro->running_ctx);
+ maestro->context = SIMIX_context_new(NULL, 0, NULL, NULL, maestro);
+ maestro->simcall.issuer = maestro;
+
+ simix_global->maestro_process = maestro;
+ return;
}
+/**
+ * \brief Same as SIMIX_process_create() but with only one argument (used by timers).
+ * \return the process created
+ */
+smx_process_t SIMIX_process_create_from_wrapper(smx_process_arg_t args) {
+
+ smx_process_t process;
+ simix_global->create_process_function(
+ &process,
+ args->name,
+ args->code,
+ args->data,
+ args->hostname,
+ args->argc,
+ args->argv,
+ args->properties);
-/** \brief Kill a SIMIX process
+ return process;
+}
+
+/**
+ * \brief Internal function to create a process.
*
- * This function simply kills a \a process... scarry isn't it ? :). Removes it from the mutex or condition that it can be blocked.
- * \param process poor victim
+ * This function actually creates the process.
+ * It may be called when a SIMCALL_PROCESS_CREATE simcall occurs,
+ * or directly for SIMIX internal purposes.
*
+ * \return the process created
*/
-void SIMIX_process_kill(smx_process_t process)
-{
- smx_simdata_process_t p_simdata = process->simdata;
+void SIMIX_process_create(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) {
+
+ *process = NULL;
+ smx_host_t host = SIMIX_host_get_by_name(hostname);
+
+ XBT_DEBUG("Start process %s on host %s", name, hostname);
+
+ if (!SIMIX_host_get_state(host)) {
+ XBT_WARN("Cannot launch process '%s' on failed host '%s'", name,
+ hostname);
+ }
+ else {
+ *process = xbt_new0(s_smx_process_t, 1);
- DEBUG2("Killing %s on %s",process->name, p_simdata->host->name);
-
- if (p_simdata->mutex) {
- xbt_swag_remove(process,p_simdata->mutex->sleeping);
- }
- if (p_simdata->cond) {
- xbt_swag_remove(process,p_simdata->cond->sleeping);
- }
- xbt_swag_remove(process,simix_global->process_to_run);
- xbt_swag_remove(process,simix_global->process_list);
- xbt_context_kill(process->simdata->context);
+ xbt_assert(((code != NULL) && (host != NULL)), "Invalid parameters");
+
+ /* Process data */
+ (*process)->pid = simix_process_maxpid++;
+ (*process)->name = xbt_strdup(name);
+ (*process)->smx_host = host;
+ (*process)->data = data;
+ (*process)->comms = xbt_fifo_new();
+ (*process)->simcall.issuer = *process;
+
+ XBT_VERB("Create context %s", (*process)->name);
+ (*process)->context = SIMIX_context_new(code, argc, argv,
+ simix_global->cleanup_process_function, *process);
- if(process==SIMIX_process_self()) {
- /* I just killed myself */
- xbt_context_yield();
+ (*process)->running_ctx = xbt_new(xbt_running_ctx_t, 1);
+ XBT_RUNNING_CTX_INITIALIZE((*process)->running_ctx);
+
+ /* Add properties */
+ (*process)->properties = properties;
+
+ /* Add the process to it's host process list */
+ xbt_swag_insert(*process, host->process_list);
+
+ XBT_DEBUG("Start context '%s'", (*process)->name);
+
+ /* Now insert it in the global process list and in the process to run list */
+ xbt_swag_insert(*process, simix_global->process_list);
+ XBT_DEBUG("Inserting %s(%s) in the to_run list", (*process)->name, host->name);
+ xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, *process);
}
}
/**
- * \brief Return the user data of a #smx_process_t.
+ * \brief Executes the processes from simix_global->process_to_run.
*
- * This functions checks whether \a process is a valid pointer or not and return the user data associated to \a process if it is possible.
- * \param process SIMIX process
- * \return A void pointer to the user data
+ * The processes of simix_global->process_to_run are run (in parallel if
+ * possible). On exit, simix_global->process_to_run is empty, and
+ * simix_global->process_that_ran contains the list of processes that just ran.
+ * The two lists are swapped so, be careful when using them before and after a
+ * call to this function.
*/
-void *SIMIX_process_get_data(smx_process_t process)
+void SIMIX_process_runall(void)
{
- xbt_assert0((process != NULL), "Invalid parameters");
+ SIMIX_context_runall();
- return (process->data);
+ xbt_dynar_t tmp = simix_global->process_that_ran;
+ simix_global->process_that_ran = simix_global->process_to_run;
+ simix_global->process_to_run = tmp;
+ xbt_dynar_reset(simix_global->process_to_run);
}
/**
- * \brief Set the user data of a #m_process_t.
+ * \brief Internal function to kill a SIMIX process.
+ *
+ * This function may be called when a SIMCALL_PROCESS_KILL simcall occurs,
+ * or directly for SIMIX internal purposes.
*
- * This functions checks whether \a process is a valid pointer or not and set the user data associated to \a process if it is possible.
- * \param process SIMIX process
- * \param data User data
+ * \param process poor victim
*/
-void SIMIX_process_set_data(smx_process_t process,void *data)
-{
- xbt_assert0((process != NULL), "Invalid parameters");
- xbt_assert0((process->data == NULL), "Data already set");
-
- process->data = data;
-
- return ;
+void SIMIX_process_kill(smx_process_t process) {
+
+ XBT_DEBUG("Killing process %s on %s", process->name, process->smx_host->name);
+
+ process->context->iwannadie = 1;
+ process->blocked = 0;
+ process->suspended = 0;
+ /* FIXME: set doexception to 0 also? */
+
+ /* destroy the blocking action if any */
+ if (process->waiting_action) {
+
+ switch (process->waiting_action->type) {
+
+ case SIMIX_ACTION_EXECUTE:
+ case SIMIX_ACTION_PARALLEL_EXECUTE:
+ SIMIX_host_execution_destroy(process->waiting_action);
+ break;
+
+ case SIMIX_ACTION_COMMUNICATE:
+ xbt_fifo_remove(process->comms, process->waiting_action);
+ SIMIX_comm_destroy(process->waiting_action);
+ break;
+
+ case SIMIX_ACTION_SLEEP:
+ SIMIX_process_sleep_destroy(process->waiting_action);
+ break;
+
+ case SIMIX_ACTION_SYNCHRO:
+ SIMIX_synchro_stop_waiting(process, &process->simcall);
+ SIMIX_synchro_destroy(process->waiting_action);
+ break;
+
+ case SIMIX_ACTION_IO:
+ SIMIX_io_destroy(process->waiting_action);
+ break;
+ }
+ }
+
+ xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
}
/**
- * \brief Return the location on which an agent is running.
- *
- * This functions checks whether \a process is a valid pointer or not and return the m_host_t corresponding to the location on which \a process is running.
- * \param process SIMIX process
- * \return SIMIX host
+ * \brief Kills all running processes.
+ * \param issuer this one will not be killed
*/
+void SIMIX_process_killall(smx_process_t issuer)
+{
+ smx_process_t p = NULL;
+
+ while ((p = xbt_swag_extract(simix_global->process_list))) {
+ if (p != issuer) {
+ SIMIX_process_kill(p);
+ }
+ }
+
+ SIMIX_context_runall();
+
+ SIMIX_process_empty_trash();
+}
+
+void SIMIX_process_change_host(smx_process_t process,
+ smx_host_t dest)
+{
+ xbt_assert((process != NULL), "Invalid parameters");
+ xbt_swag_remove(process, process->smx_host->process_list);
+ process->smx_host = dest;
+ xbt_swag_insert(process, dest->process_list);
+}
+
+void SIMIX_pre_process_change_host(smx_process_t process, smx_host_t dest)
+{
+ process->new_host = dest;
+}
+
+void SIMIX_pre_process_suspend(smx_simcall_t simcall)
+{
+ smx_process_t process = simcall->process_suspend.process;
+ SIMIX_process_suspend(process, simcall->issuer);
+
+ if (process != simcall->issuer) {
+ SIMIX_simcall_answer(simcall);
+ }
+ /* If we are suspending ourselves, then just do not finish the simcall now */
+}
+
+void SIMIX_process_suspend(smx_process_t process, smx_process_t issuer)
+{
+ xbt_assert((process != NULL), "Invalid parameters");
+
+ if (process->suspended) {
+ XBT_DEBUG("Process '%s' is already suspended", process->name);
+ return;
+ }
+
+ process->suspended = 1;
+
+ /* If we are suspending another process, and it is waiting on an action,
+ suspend its action. */
+ if (process != issuer) {
+
+ if (process->waiting_action) {
+
+ switch (process->waiting_action->type) {
+
+ case SIMIX_ACTION_EXECUTE:
+ case SIMIX_ACTION_PARALLEL_EXECUTE:
+ SIMIX_host_execution_suspend(process->waiting_action);
+ break;
+
+ case SIMIX_ACTION_COMMUNICATE:
+ SIMIX_comm_suspend(process->waiting_action);
+ break;
+
+ case SIMIX_ACTION_SLEEP:
+ SIMIX_process_sleep_suspend(process->waiting_action);
+ break;
+
+ default:
+ xbt_die("Internal error in SIMIX_process_suspend: unexpected action type %d",
+ (int)process->waiting_action->type);
+ }
+ }
+ }
+}
+
+void SIMIX_process_resume(smx_process_t process, smx_process_t issuer)
+{
+ xbt_assert((process != NULL), "Invalid parameters");
+
+ if (!process->suspended) {
+ XBT_DEBUG("Process '%s' is not suspended", process->name);
+ return;
+ }
+
+ process->suspended = 0;
+
+ /* If we are resuming another process, resume the action it was waiting for
+ if any. Otherwise add it to the list of process to run in the next round. */
+ if (process != issuer) {
+
+ if (process->waiting_action) {
+
+ switch (process->waiting_action->type) {
+
+ case SIMIX_ACTION_EXECUTE:
+ case SIMIX_ACTION_PARALLEL_EXECUTE:
+ SIMIX_host_execution_resume(process->waiting_action);
+ break;
+
+ case SIMIX_ACTION_COMMUNICATE:
+ SIMIX_comm_resume(process->waiting_action);
+ break;
+
+ case SIMIX_ACTION_SLEEP:
+ SIMIX_process_sleep_resume(process->waiting_action);
+ break;
+
+ default:
+ xbt_die("Internal error in SIMIX_process_resume: unexpected action type %d",
+ (int)process->waiting_action->type);
+ }
+ }
+ else {
+ xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
+ }
+ }
+}
+
+int SIMIX_process_get_maxpid(void) {
+ return simix_process_maxpid;
+}
+
+int SIMIX_process_count(void)
+{
+ return xbt_swag_size(simix_global->process_list);
+}
+
+void* SIMIX_process_self_get_data(smx_process_t self)
+{
+ xbt_assert(self == SIMIX_process_self(), "This is not the current process");
+
+ if (!self) {
+ return NULL;
+ }
+ return SIMIX_process_get_data(self);
+}
+
+void SIMIX_process_self_set_data(smx_process_t self, void *data)
+{
+ xbt_assert(self == SIMIX_process_self(), "This is not the current process");
+
+ SIMIX_process_set_data(self, data);
+}
+
+void* SIMIX_process_get_data(smx_process_t process)
+{
+ return process->data;
+}
+
+void SIMIX_process_set_data(smx_process_t process, void *data)
+{
+ process->data = data;
+}
+
smx_host_t SIMIX_process_get_host(smx_process_t process)
{
- xbt_assert0(((process != NULL) && (process->simdata)), "Invalid parameters");
+ return process->smx_host;
+}
+
+/* needs to be public and without simcall because it is called
+ by exceptions and logging events */
+const char* SIMIX_process_self_get_name(void) {
- return (process->simdata->host);
+ smx_process_t process = SIMIX_process_self();
+ if (process == NULL || process == simix_global->maestro_process)
+ return "";
+
+ return SIMIX_process_get_name(process);
}
-/**
- * \brief Return the name of an agent.
- *
- * This functions checks whether \a process is a valid pointer or not and return its name.
- * \param process SIMIX process
- * \return The process name
- */
-const char *SIMIX_process_get_name(smx_process_t process)
+const char* SIMIX_process_get_name(smx_process_t process)
+{
+ return process->name;
+}
+
+smx_process_t SIMIX_process_get_by_name(const char* name)
{
- xbt_assert0(((process != NULL) && (process->simdata)), "Invalid parameters");
+ smx_process_t proc;
- return (process->name);
+ xbt_swag_foreach(proc, simix_global->process_list)
+ {
+ if(!strcmp(name, proc->name))
+ return proc;
+ }
+ return NULL;
}
-/**
- * \brief Return the current agent.
- *
- * This functions returns the currently running #smx_process_t.
- * \return The SIMIX process
- */
-smx_process_t SIMIX_process_self(void)
+int SIMIX_process_is_suspended(smx_process_t process)
{
- return simix_global ? simix_global->current_process : NULL;
+ return process->suspended;
}
-/**
- * \brief Suspend the process.
- *
- * This functions suspend the process by suspending the action on which it was waiting for the completion.
- * \param process SIMIX process
- */
-void SIMIX_process_suspend(smx_process_t process)
-{
- smx_simdata_process_t simdata = NULL;
-
- xbt_assert0(((process) && (process->simdata)), "Invalid parameters");
-
- if(process!=SIMIX_process_self()) {
- simdata = process->simdata;
-
- if (simdata->mutex) {
- /* process blocked on a mutex, only set suspend=1 */
- simdata->suspended = 1;
- }
- else if (simdata->cond){
- /* process blocked cond, suspend all actions */
-
- /* temporaries variables */
- smx_cond_t c;
- xbt_fifo_item_t i;
- smx_action_t act;
-
- simdata->suspended = 1;
- c = simdata->cond;
- xbt_fifo_foreach(c->actions,i,act, smx_action_t) {
- surf_workstation_resource->common_public->suspend(act->simdata->surf_action);
- }
- }
- else {
- simdata->suspended = 1;
- }
+xbt_dict_t SIMIX_process_get_properties(smx_process_t process)
+{
+ return process->properties;
+}
+
+void SIMIX_pre_process_sleep(smx_simcall_t simcall)
+{
+ if (MC_IS_ENABLED) {
+ MC_process_clock_add(simcall->issuer, simcall->process_sleep.duration);
+ simcall->process_sleep.result = SIMIX_DONE;
+ SIMIX_simcall_answer(simcall);
+ return;
}
- else {
- /* process executing, I can create an action and suspend it */
- process->simdata->suspended = 1;
- smx_action_t dummy;
- smx_cond_t cond;
- char name[] = "dummy";
-
- cond = SIMIX_cond_init();
- dummy = SIMIX_action_execute(SIMIX_process_get_host(process), name, 0);
- surf_workstation_resource->common_public->set_priority(dummy->simdata->surf_action,0.0);
- SIMIX_register_condition_to_action(dummy,cond);
- SIMIX_register_action_to_condition(dummy,cond);
- __SIMIX_cond_wait(cond);
- //SIMIX_action_destroy(dummy);
- //SIMIX_cond_destroy(cond);
- }
- return ;
+ smx_action_t action = SIMIX_process_sleep(simcall->issuer, simcall->process_sleep.duration);
+ xbt_fifo_push(action->simcalls, simcall);
+ simcall->issuer->waiting_action = action;
}
-/**
- * \brief Resume a suspended process.
+smx_action_t SIMIX_process_sleep(smx_process_t process, double duration)
+{
+ smx_action_t action;
+ smx_host_t host = process->smx_host;
+
+ /* check if the host is active */
+ if (surf_workstation_model->extension.
+ workstation.get_state(host->host) != SURF_RESOURCE_ON) {
+ THROWF(host_error, 0, "Host %s failed, you cannot call this function",
+ host->name);
+ }
+
+ action = xbt_mallocator_get(simix_global->action_mallocator);
+ action->type = SIMIX_ACTION_SLEEP;
+ action->name = NULL;
+#ifdef HAVE_TRACING
+ action->category = NULL;
+#endif
+
+ action->sleep.host = host;
+ action->sleep.surf_sleep =
+ surf_workstation_model->extension.workstation.sleep(host->host, duration);
+
+ surf_workstation_model->action_data_set(action->sleep.surf_sleep, action);
+ XBT_DEBUG("Create sleep action %p", action);
+
+ return action;
+}
+
+void SIMIX_post_process_sleep(smx_action_t action)
+{
+ smx_simcall_t simcall;
+ e_smx_state_t state;
+
+ while ((simcall = xbt_fifo_shift(action->simcalls))) {
+
+ switch(surf_workstation_model->action_state_get(action->sleep.surf_sleep)){
+ case SURF_ACTION_FAILED:
+ state = SIMIX_SRC_HOST_FAILURE;
+ break;
+
+ case SURF_ACTION_DONE:
+ state = SIMIX_DONE;
+ break;
+
+ default:
+ THROW_IMPOSSIBLE;
+ break;
+ }
+ simcall->process_sleep.result = state;
+ simcall->issuer->waiting_action = NULL;
+ SIMIX_simcall_answer(simcall);
+ }
+ SIMIX_process_sleep_destroy(action);
+}
+
+void SIMIX_process_sleep_destroy(smx_action_t action)
+{
+ XBT_DEBUG("Destroy action %p", action);
+ if (action->sleep.surf_sleep)
+ action->sleep.surf_sleep->model_type->action_unref(action->sleep.surf_sleep);
+ xbt_mallocator_release(simix_global->action_mallocator, action);
+}
+
+void SIMIX_process_sleep_suspend(smx_action_t action)
+{
+ surf_workstation_model->suspend(action->sleep.surf_sleep);
+}
+
+void SIMIX_process_sleep_resume(smx_action_t action)
+{
+ surf_workstation_model->resume(action->sleep.surf_sleep);
+}
+
+/**
+ * \brief Calling this function makes the process to yield.
+ *
+ * Only the current process can call this function, giving back the control to
+ * maestro.
*
- * This functions resume a suspended process by resuming the task on which it was waiting for the completion.
- * \param process SIMIX process
+ * \param self the current process
*/
-void SIMIX_process_resume(smx_process_t process)
+void SIMIX_process_yield(smx_process_t self)
{
- smx_simdata_process_t simdata = NULL;
+ XBT_DEBUG("Yield process '%s'", self->name);
+
+ /* Go into sleep and return control to maestro */
+ SIMIX_context_suspend(self->context);
- xbt_assert0(((process != NULL) && (process->simdata)), "Invalid parameters");
- CHECK_HOST();
+ /* Ok, maestro returned control to us */
+ XBT_DEBUG("Control returned to me: '%s'", self->name);
- if(process == SIMIX_process_self()) {
- return;
+ if (self->context->iwannadie){
+ XBT_DEBUG("I wanna die!");
+ SIMIX_context_stop(self->context);
}
- simdata = process->simdata;
- if(simdata->mutex) {
- DEBUG0("Resume process blocked on a mutex");
- simdata->suspended = 0; /* He'll wake up by itself */
- return;
+ if (self->doexception) {
+ XBT_DEBUG("Wait, maestro left me an exception");
+ self->doexception = 0;
+ SMX_THROW();
}
- else if (simdata->cond) {
- DEBUG0("Resume process blocked on a conditional");
- /* temporaries variables */
- smx_cond_t c;
- xbt_fifo_item_t i;
- smx_action_t act;
- simdata->suspended = 0;
- c = simdata->cond;
- xbt_fifo_foreach(c->actions,i,act, smx_action_t) {
- surf_workstation_resource->common_public->resume(act->simdata->surf_action);
- }
- return;
- }
- else {
- simdata->suspended = 0;
- xbt_swag_insert(process,simix_global->process_to_run);
- }
+
+ if (self->new_host) {
+ SIMIX_process_change_host(self, self->new_host);
+ self->new_host = NULL;
+ }
+}
+/* callback: context fetching */
+xbt_running_ctx_t *SIMIX_process_get_running_context(void)
+{
+ return SIMIX_process_self()->running_ctx;
}
-/**
- * \brief Returns true if the process is suspended .
- *
- * This checks whether a process is suspended or not by inspecting the task on which it was waiting for the completion.
- * \param process SIMIX process
- * \return 1, if the process is suspended, else 0.
- */
-int SIMIX_process_is_suspended(smx_process_t process)
+/* callback: termination */
+void SIMIX_process_exception_terminate(xbt_ex_t * e)
{
- xbt_assert0(((process != NULL) && (process->simdata)), "Invalid parameters");
+ xbt_ex_display(e);
+ abort();
+}
+
+smx_context_t SIMIX_process_get_context(smx_process_t p) {
+ return p->context;
+}
- return (process->simdata->suspended);
+void SIMIX_process_set_context(smx_process_t p,smx_context_t c) {
+ p->context = c;
}
+/**
+ * \brief Returns the list of processes to run.
+ */
+xbt_dynar_t SIMIX_process_get_runnable(void)
+{
+ return simix_global->process_to_run;
+}
+/**
+ * \brief Returns the process from PID.
+ */
+smx_process_t SIMIX_process_from_PID(int PID)
+{
+ smx_process_t proc;
+ xbt_swag_foreach(proc, simix_global->process_list)
+ {
+ if(proc->pid == PID)
+ return proc;
+ }
+ return NULL;
+}
+/** @brief returns a dynar containg all currently existing processes */
+xbt_dynar_t SIMIX_processes_as_dynar(void) {
+ smx_process_t proc;
+ xbt_dynar_t res = xbt_dynar_new(sizeof(smx_process_t),NULL);
+ xbt_swag_foreach(proc, simix_global->process_list) {
+ xbt_dynar_push(res,&proc);
+ }
+ return res;
+}
