#include "xbt/sysdep.h"
#include "xbt/log.h"
#include "xbt/dict.h"
-#include "msg/mailbox.h"
#include "mc/mc.h"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_process, simix,
"Logging specific to SIMIX (process)");
-static unsigned long simix_process_maxpid = 0;
+unsigned long simix_process_maxpid = 0;
/**
* \brief Returns the current agent.
*/
void SIMIX_process_cleanup(smx_process_t process)
{
- DEBUG1("Cleanup process %s", process->name);
+ 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 */
+ 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, action->state, action->comm.src_proc, action->comm.dst_proc);
+ action->comm.src_proc = NULL;
+
+ if (action->comm.detached) {
+ if (action->comm.refcount == 0) {
+ /* 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 {
+ 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, 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);
+ }
+ }
+
/*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);
SIMIX_context_free(process->context);
/* Free the exception allocated at creation time */
- if (process->running_ctx)
- free(process->running_ctx);
- if (process->properties)
- xbt_dict_free(&process->properties);
+ free(process->running_ctx);
+ xbt_dict_free(&process->properties);
+
+ xbt_fifo_free(process->comms);
free(process->name);
- process->name = NULL;
free(process);
}
}
smx_process_t SIMIX_process_create_from_wrapper(smx_process_arg_t args) {
smx_process_t process;
-
- if (simix_global->create_process_function) {
- process = simix_global->create_process_function(args->name,
- args->code,
- args->data,
- args->hostname,
- args->argc,
- args->argv,
- args->properties);
- }
- else {
- process = SIMIX_process_create(args->name,
- args->code,
- args->data,
- args->hostname,
- args->argc,
- args->argv,
- args->properties);
- }
- // FIXME: to simplify this, simix_global->create_process_function could just
- // be SIMIX_process_create() by default (and the same thing in smx_deployment.c)
+ simix_global->create_process_function(
+ &process,
+ args->name,
+ args->code,
+ args->data,
+ args->hostname,
+ args->argc,
+ args->argv,
+ args->properties);
return process;
}
*
* \return the process created
*/
-smx_process_t SIMIX_process_create(const char *name,
- xbt_main_func_t code,
- void *data,
- const char *hostname,
- int argc, char **argv,
- xbt_dict_t properties) {
-
- smx_process_t process = NULL;
+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);
- DEBUG2("Start process %s on host %s", name, hostname);
+ XBT_DEBUG("Start process %s on host %s", name, hostname);
if (!SIMIX_host_get_state(host)) {
- WARN2("Cannot launch process '%s' on failed host '%s'", name,
+ XBT_WARN("Cannot launch process '%s' on failed host '%s'", name,
hostname);
}
else {
- process = xbt_new0(s_smx_process_t, 1);
+ *process = xbt_new0(s_smx_process_t, 1);
- xbt_assert0(((code != NULL) && (host != NULL)), "Invalid parameters");
+ 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)->pid = simix_process_maxpid++;
+ (*process)->name = xbt_strdup(name);
+ (*process)->smx_host = host;
+ (*process)->data = data;
+ (*process)->comms = xbt_fifo_new();
- VERB1("Create context %s", process->name);
- process->context = SIMIX_context_new(code, argc, argv,
- simix_global->cleanup_process_function, process);
+ XBT_VERB("Create context %s", (*process)->name);
+ (*process)->context = SIMIX_context_new(code, argc, argv,
+ simix_global->cleanup_process_function, *process);
- process->running_ctx = xbt_new(xbt_running_ctx_t, 1);
- XBT_RUNNING_CTX_INITIALIZE(process->running_ctx);
+ (*process)->running_ctx = xbt_new(xbt_running_ctx_t, 1);
+ XBT_RUNNING_CTX_INITIALIZE((*process)->running_ctx);
/* Add properties */
- process->properties = properties;
+ (*process)->properties = properties;
/* Add the process to it's host process list */
- xbt_swag_insert(process, host->process_list);
+ xbt_swag_insert(*process, host->process_list);
- DEBUG1("Start context '%s'", process->name);
+ 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);
- DEBUG2("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);
+ 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);
}
+}
- return process;
+/**
+ * \brief Executes the processes from simix_global->process_to_run.
+ *
+ * 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_runall(void)
+{
+ SIMIX_context_runall();
+
+ 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);
}
/**
*
* \param process poor victim
*/
-void SIMIX_process_kill(smx_process_t process, smx_process_t killer) {
+void SIMIX_process_kill(smx_process_t process) {
- DEBUG2("Killing process %s on %s", process->name, process->smx_host->name);
+ 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) {
}
}
- /* If I'm killing myself then stop, otherwise schedule the process to kill. */
- if (process == killer) {
- SIMIX_context_stop(process->context);
- }
- else {
- xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
- }
+ xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
}
/**
* \brief Kills all running processes.
- *
- * Only maestro can kill everyone.
+ * \param issuer this one will not be killed
*/
-void SIMIX_process_killall(void)
+void SIMIX_process_killall(smx_process_t issuer)
{
smx_process_t p = NULL;
- while ((p = xbt_swag_extract(simix_global->process_list)))
- SIMIX_process_kill(p, SIMIX_process_self());
+ while ((p = xbt_swag_extract(simix_global->process_list))) {
+ if (p != issuer) {
+ SIMIX_process_kill(p);
+ }
+ }
+
+ SIMIX_context_runall(simix_global->process_to_run);
SIMIX_process_empty_trash();
}
void SIMIX_process_change_host(smx_process_t process,
- const char *source, const char *dest)
+ 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)
{
- smx_host_t h1 = NULL;
- smx_host_t h2 = NULL;
- xbt_assert0((process != NULL), "Invalid parameters");
- h1 = SIMIX_host_get_by_name(source);
- h2 = SIMIX_host_get_by_name(dest);
- process->smx_host = h2;
- xbt_swag_remove(process, h1->process_list);
- xbt_swag_insert(process, h2->process_list);
+ process->new_host = dest;
}
void SIMIX_pre_process_suspend(smx_req_t req)
void SIMIX_process_suspend(smx_process_t process, smx_process_t issuer)
{
- xbt_assert0(process, "Invalid parameters");
+ 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 it's action. */
+ suspend its action. */
if (process != issuer) {
if (process->waiting_action) {
break;
default:
- THROW_IMPOSSIBLE;
+ xbt_die("Internal error in SIMIX_process_suspend: unexpected action type %d",
+ process->waiting_action->type);
}
}
}
void SIMIX_process_resume(smx_process_t process, smx_process_t issuer)
{
- xbt_assert0((process != NULL), "Invalid parameters");
+ xbt_assert((process != NULL), "Invalid parameters");
+
+ if (!process->suspended) {
+ XBT_DEBUG("Process '%s' is not suspended", process->name);
+ return;
+ }
process->suspended = 0;
break;
default:
- THROW_IMPOSSIBLE;
+ xbt_die("Internal error in SIMIX_process_resume: unexpected action type %d",
+ process->waiting_action->type);
}
}
else {
int SIMIX_process_get_maxpid(void) {
return simix_process_maxpid;
}
+
int SIMIX_process_count(void)
{
return xbt_swag_size(simix_global->process_list);
return process->name;
}
-int SIMIX_process_is_suspended(smx_process_t process)
+smx_process_t SIMIX_process_get_by_name(const char* name)
{
- return process->suspended;
+ smx_process_t proc;
+
+ xbt_swag_foreach(proc, simix_global->process_list)
+ {
+ if(!strcmp(name, proc->name))
+ return proc;
+ }
+ return NULL;
}
-int SIMIX_process_is_enabled(smx_process_t process)
+int SIMIX_process_is_suspended(smx_process_t process)
{
- if (process->request.call != REQ_NO_REQ && SIMIX_request_is_enabled(&process->request))
- return TRUE;
-
- return FALSE;
+ return process->suspended;
}
xbt_dict_t SIMIX_process_get_properties(smx_process_t process)
void SIMIX_pre_process_sleep(smx_req_t req)
{
if (MC_IS_ENABLED) {
+ MC_process_clock_add(req->issuer, req->process_sleep.duration);
req->process_sleep.result = SIMIX_DONE;
SIMIX_request_answer(req);
+ return;
}
smx_action_t action = SIMIX_process_sleep(req->issuer, req->process_sleep.duration);
xbt_fifo_push(action->request_list, req);
/* check if the host is active */
if (surf_workstation_model->extension.
workstation.get_state(host->host) != SURF_RESOURCE_ON) {
- THROW1(host_error, 0, "Host %s failed, you cannot call this function",
+ THROWF(host_error, 0, "Host %s failed, you cannot call this function",
host->name);
}
- action = xbt_new0(s_smx_action_t, 1);
+ action = xbt_mallocator_get(simix_global->action_mallocator);
action->type = SIMIX_ACTION_SLEEP;
- action->request_list = xbt_fifo_new();
- action->name = xbt_strdup("sleep");
+ action->name = NULL;
#ifdef HAVE_TRACING
action->category = NULL;
#endif
surf_workstation_model->extension.workstation.sleep(host->host, duration);
surf_workstation_model->action_data_set(action->sleep.surf_sleep, action);
- DEBUG1("Create sleep action %p", action);
+ XBT_DEBUG("Create sleep action %p", action);
return action;
}
void SIMIX_post_process_sleep(smx_action_t action)
{
- e_smx_state_t state = SIMIX_action_map_state(surf_workstation_model->action_state_get(action->sleep.surf_sleep));
smx_req_t req;
+ e_smx_state_t state;
while ((req = xbt_fifo_shift(action->request_list))) {
+
+ 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;
+ }
req->process_sleep.result = state;
req->issuer->waiting_action = NULL;
SIMIX_request_answer(req);
}
-
SIMIX_process_sleep_destroy(action);
}
void SIMIX_process_sleep_destroy(smx_action_t action)
{
- DEBUG1("Destroy action %p", action);
- if (action->name)
- xbt_free(action->name);
+ XBT_DEBUG("Destroy action %p", action);
if (action->sleep.surf_sleep)
action->sleep.surf_sleep->model_type->action_unref(action->sleep.surf_sleep);
-#ifdef HAVE_TRACING
- TRACE_smx_action_destroy(action);
-#endif
- xbt_fifo_free(action->request_list);
- xbt_free(action);
+ xbt_mallocator_release(simix_global->action_mallocator, action);
}
void SIMIX_process_sleep_suspend(smx_action_t action)
{
smx_process_t self = SIMIX_process_self();
- DEBUG1("Yield process '%s'", self->name);
+ XBT_DEBUG("Yield process '%s'", self->name);
/* Go into sleep and return control to maestro */
SIMIX_context_suspend(self->context);
/* Ok, maestro returned control to us */
- DEBUG1("Maestro returned control to me: '%s'", self->name);
+ XBT_DEBUG("Control returned to me: '%s'", self->name);
- if (self->context->iwannadie)
+ if (self->context->iwannadie){
+ XBT_DEBUG("I wanna die!");
SIMIX_context_stop(self->context);
+ }
if (self->doexception) {
- DEBUG0("Wait, maestro left me an exception");
+ XBT_DEBUG("Wait, maestro left me an exception");
self->doexception = 0;
RETHROW;
}
+
+ if (self->new_host) {
+ SIMIX_process_change_host(self, self->new_host);
+ self->new_host = NULL;
+ }
}
/* callback: context fetching */
smx_context_t SIMIX_process_get_context(smx_process_t p) {
return p->context;
}
+
void SIMIX_process_set_context(smx_process_t p,smx_context_t c) {
p->context = c;
}
