/**
* \brief Cleans the MSG data of a process.
* \param smx_proc a SIMIX process
*/
void MSG_process_cleanup_from_SIMIX(smx_process_t smx_proc)
{
simdata_process_t msg_proc;
// get the MSG process from the SIMIX process
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(smx_proc);
SIMIX_process_self_set_data(smx_proc, NULL);
}
else {
msg_proc = simcall_process_get_data(smx_proc);
simcall_process_set_data(smx_proc, NULL);
}
#ifdef HAVE_TRACING
TRACE_msg_process_end(smx_proc);
#endif
// free the data if a function was provided
if (msg_proc->data && msg_global->process_data_cleanup) {
msg_global->process_data_cleanup(msg_proc->data);
}
// remove the process from its virtual machine
if (msg_proc->vm) {
int pos = xbt_dynar_search(msg_proc->vm->processes,&smx_proc);
xbt_dynar_remove_at(msg_proc->vm->processes,pos, NULL);
}
// free the MSG process
xbt_free(msg_proc);
}
/**
* \brief Cleans the MSG data of a process.
* \param smx_proc a SIMIX process
*/
void MSG_process_cleanup_from_SIMIX(smx_process_t smx_proc)
{
simdata_process_t msg_proc;
// get the MSG process from the SIMIX process
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(smx_proc);
SIMIX_process_self_set_data(smx_proc, NULL);
}
else {
msg_proc = simcall_process_get_data(smx_proc);
simcall_process_set_data(smx_proc, NULL);
}
TRACE_msg_process_end(smx_proc);
// free the data if a function was provided
if (msg_proc && msg_proc->data && msg_global->process_data_cleanup) {
msg_global->process_data_cleanup(msg_proc->data);
}
// free the MSG process
xbt_free(msg_proc);
SIMIX_process_cleanup(smx_proc);
}
/* Internal function used to factorize code between
* MSG_task_isend_with_matching() and MSG_task_dsend().
*/
static XBT_INLINE
msg_comm_t MSG_task_isend_internal(msg_task_t task, const char *alias,
int (*match_fun)(void*,void*, smx_synchro_t),
void *match_data, void_f_pvoid_t cleanup,
int detached)
{
simdata_task_t t_simdata = NULL;
msg_process_t process = MSG_process_self();
msg_mailbox_t mailbox = MSG_mailbox_get_by_alias(alias);
int call_end = TRACE_msg_task_put_start(task);
/* Prepare the task to send */
t_simdata = task->simdata;
t_simdata->sender = process;
t_simdata->source = ((simdata_process_t) SIMIX_process_self_get_data(process))->m_host;
if (t_simdata->isused != 0) {
if (msg_global->debug_multiple_use){
XBT_ERROR("This task is already used in there:");
xbt_backtrace_display(t_simdata->isused);
XBT_ERROR("And you try to reuse it from here:");
xbt_backtrace_display_current();
} else {
xbt_assert(t_simdata->isused == 0,
"This task is still being used somewhere else. You cannot send it now. Go fix your code! (use --cfg=msg/debug_multiple_use:on to get the backtrace of the other process)");
}
}
if (msg_global->debug_multiple_use)
MSG_BT(t_simdata->isused, "Using Backtrace");
else
t_simdata->isused = (void*)1;
t_simdata->comm = NULL;
msg_global->sent_msg++;
/* Send it by calling SIMIX network layer */
smx_synchro_t act = simcall_comm_isend(SIMIX_process_self(), mailbox, t_simdata->bytes_amount,
t_simdata->rate, task, sizeof(void *),
match_fun, cleanup, NULL, match_data,detached);
t_simdata->comm = act; /* FIXME: is the field t_simdata->comm still useful? */
msg_comm_t comm;
if (detached) {
comm = NULL;
} else {
comm = xbt_new0(s_msg_comm_t, 1);
comm->task_sent = task;
comm->task_received = NULL;
comm->status = MSG_OK;
comm->s_comm = act;
}
if (TRACE_is_enabled())
simcall_set_category(act, task->category);
if (call_end)
TRACE_msg_task_put_end();
return comm;
}
/** \ingroup m_process_management
* \brief Return the location on which a process is running.
* \param process a process (NULL means the current one)
* \return the msg_host_t corresponding to the location on which \a
* process is running.
*/
msg_host_t MSG_process_get_host(msg_process_t process)
{
simdata_process_t simdata;
if (process == NULL) {
simdata = SIMIX_process_self_get_data(SIMIX_process_self());
}
else {
simdata = simcall_process_get_data(process);
}
return simdata->m_host;
}
/** \ingroup m_process_management
* \brief Return the location on which a process is running.
* \param process a process (nullptr means the current one)
* \return the msg_host_t corresponding to the location on which \a process is running.
*/
msg_host_t MSG_process_get_host(msg_process_t process)
{
simdata_process_t simdata;
if (process == nullptr) {
simdata = (simdata_process_t) SIMIX_process_self_get_data();
}
else {
simdata = (simdata_process_t) simcall_process_get_data(process);
}
return simdata ? simdata->m_host : nullptr;
}
/**
* \brief Return the user data of a #smx_process_t.
*
* 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
*/
void* SIMIX_req_process_get_data(smx_process_t process)
{
if (process == SIMIX_process_self()) {
/* avoid a request if this function is called by the process itself */
return SIMIX_process_self_get_data();
}
smx_req_t req = SIMIX_req_mine();
req->call = REQ_PROCESS_GET_DATA;
req->process_get_data.process = process;
SIMIX_request_push();
return req->process_get_data.result;
}
/** \ingroup msg_task_usage
* \brief Sends a task on a mailbox, with support for matching requests
*
* This is a non blocking function: use MSG_comm_wait() or MSG_comm_test()
* to end the communication.
*
* \param task a #msg_task_t to send on another location.
* \param alias name of the mailbox to sent the task to
* \param match_fun boolean function which parameters are:
* - match_data_provided_here
* - match_data_provided_by_other_side_if_any
* - the_smx_action_describing_the_other_side
* \param match_data user provided data passed to match_fun
* \return the msg_comm_t communication created
*/
XBT_INLINE msg_comm_t MSG_task_isend_with_matching(msg_task_t task, const char *alias,
int (*match_fun)(void*,void*, smx_action_t),
void *match_data)
{
simdata_task_t t_simdata = NULL;
msg_process_t process = MSG_process_self();
msg_mailbox_t mailbox = MSG_mailbox_get_by_alias(alias);
#ifdef HAVE_TRACING
int call_end = TRACE_msg_task_put_start(task);
#endif
/* Prepare the task to send */
t_simdata = task->simdata;
t_simdata->sender = process;
t_simdata->source = ((simdata_process_t) SIMIX_process_self_get_data(process))->m_host;
xbt_assert(t_simdata->isused == 0,
"This task is still being used somewhere else. You cannot send it now. Go fix your code!");
t_simdata->isused = 1;
t_simdata->comm = NULL;
msg_global->sent_msg++;
/* Send it by calling SIMIX network layer */
msg_comm_t comm = xbt_new0(s_msg_comm_t, 1);
comm->task_sent = task;
comm->task_received = NULL;
comm->status = MSG_OK;
comm->s_comm =
simcall_comm_isend(mailbox, t_simdata->message_size,
t_simdata->rate, task, sizeof(void *), match_fun, NULL, match_data, 0);
t_simdata->comm = comm->s_comm; /* FIXME: is the field t_simdata->comm still useful? */
#ifdef HAVE_TRACING
if (TRACE_is_enabled()) {
simcall_set_category(comm->s_comm, task->category);
}
#endif
#ifdef HAVE_TRACING
if (call_end)
TRACE_msg_task_put_end();
#endif
return comm;
}
/******************************** Process ************************************/
void MSG_process_cleanup_from_SIMIX(smx_process_t smx_proc)
{
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();
}
else {
msg_proc = SIMIX_req_process_get_data(smx_proc);
}
#ifdef HAVE_TRACING
TRACE_msg_process_end(smx_proc);
#endif
xbt_free(msg_proc);
}
static int xbt_thread_create_wrapper(int argc, char *argv[])
{
smx_process_t self = SIMIX_process_self();
xbt_thread_t t =
(xbt_thread_t) SIMIX_process_self_get_data(self);
simcall_process_set_data(self, t->father_data);
t->code(t->userparam);
if (t->joinable) {
t->done = 1;
xbt_mutex_acquire(t->mutex);
xbt_cond_broadcast(t->cond);
xbt_mutex_release(t->mutex);
} else {
xbt_mutex_destroy(t->mutex);
xbt_cond_destroy(t->cond);
free(t->name);
free(t);
}
return 0;
}
xbt_thread_t xbt_thread_create(const char *name, void_f_pvoid_t code,
void *param, int joinable)
{
xbt_thread_t res = xbt_new0(s_xbt_thread_t, 1);
res->name = xbt_strdup(name);
res->userparam = param;
res->code = code;
res->father_data = SIMIX_process_self_get_data(SIMIX_process_self());
/* char*name = bprintf("%s#%p",SIMIX_process_self_get_name(), param); */
simcall_process_create(&res->s_process, name,
xbt_thread_create_wrapper, res,
SIMIX_host_self_get_name(), -1.0, 0, NULL,
/*props */ NULL,0);
res->joinable = joinable;
res->done = 0;
res->cond = xbt_cond_init();
res->mutex = xbt_mutex_init();
// free(name);
return res;
}
/* Internal function used to factorize code between MSG_task_isend_with_matching() and MSG_task_dsend(). */
static inline msg_comm_t MSG_task_isend_internal(msg_task_t task, const char *alias,
int (*match_fun)(void*,void*, smx_synchro_t),
void *match_data, void_f_pvoid_t cleanup, int detached)
{
simdata_task_t t_simdata = nullptr;
msg_process_t process = MSG_process_self();
msg_mailbox_t mailbox = MSG_mailbox_get_by_alias(alias);
int call_end = TRACE_msg_task_put_start(task);
/* Prepare the task to send */
t_simdata = task->simdata;
t_simdata->sender = process;
t_simdata->source = ((simdata_process_t) SIMIX_process_self_get_data())->m_host;
t_simdata->setUsed();
t_simdata->comm = nullptr;
msg_global->sent_msg++;
/* Send it by calling SIMIX network layer */
smx_synchro_t act = simcall_comm_isend(SIMIX_process_self(), mailbox, t_simdata->bytes_amount, t_simdata->rate,
task, sizeof(void *), match_fun, cleanup, nullptr, match_data,detached);
t_simdata->comm = static_cast<simgrid::simix::Comm*>(act); /* FIXME: is the field t_simdata->comm still useful? */
msg_comm_t comm;
if (detached) {
comm = nullptr;
} else {
comm = xbt_new0(s_msg_comm_t, 1);
comm->task_sent = task;
comm->task_received = nullptr;
comm->status = MSG_OK;
comm->s_comm = act;
}
if (TRACE_is_enabled())
simcall_set_category(act, task->category);
if (call_end)
TRACE_msg_task_put_end();
return comm;
}
/** \ingroup msg_task_usage
* \brief Sends a task on a mailbox with a maximal rate.
*
* This is a non blocking detached send function.
* Think of it as a best effort send. Keep in mind that the third parameter
* is only called if the communication fails. If the communication does work,
* it is responsibility of the receiver code to free anything related to
* the task, as usual. More details on this can be obtained on
* <a href="http://lists.gforge.inria.fr/pipermail/simgrid-user/2011-November/002649.html">this thread</a>
* in the SimGrid-user mailing list archive.
*
* \param task a #msg_task_t to send on another location.
* \param alias name of the mailbox to sent the task to
* \param cleanup a function to destroy the task if the
* communication fails, e.g. MSG_task_destroy
* (if NULL, no function will be called)
* \param maxrate the maximum communication rate for sending this task
*
*/
void MSG_task_dsend_bounded(msg_task_t task, const char *alias, void_f_pvoid_t cleanup, double maxrate)
{
task->simdata->rate = maxrate;
simdata_task_t t_simdata = NULL;
msg_process_t process = MSG_process_self();
msg_mailbox_t mailbox = MSG_mailbox_get_by_alias(alias);
/* Prepare the task to send */
t_simdata = task->simdata;
t_simdata->sender = process;
t_simdata->source = ((simdata_process_t) SIMIX_process_self_get_data(process))->m_host;
xbt_assert(t_simdata->isused == 0,
"This task is still being used somewhere else. You cannot send it now. Go fix your code!");
t_simdata->isused = 1;
t_simdata->comm = NULL;
msg_global->sent_msg++;
#ifdef HAVE_TRACING
int call_end = TRACE_msg_task_put_start(task);
#endif
/* Send it by calling SIMIX network layer */
smx_action_t comm = simcall_comm_isend(mailbox, t_simdata->message_size,
t_simdata->rate, task, sizeof(void *), NULL, cleanup, NULL, 1);
t_simdata->comm = comm;
#ifdef HAVE_TRACING
if (TRACE_is_enabled()) {
simcall_set_category(comm, task->category);
}
#endif
#ifdef HAVE_TRACING
if (call_end)
TRACE_msg_task_put_end();
#endif
}
/**
* \brief Cleans the MSG data of a process.
* \param smx_proc a SIMIX process
*/
void MSG_process_cleanup_from_SIMIX(smx_actor_t smx_proc)
{
simdata_process_t msg_proc;
// get the MSG process from the SIMIX process
if (smx_proc == SIMIX_process_self()) {
/* avoid a SIMIX request if this function is called by the process itself */
msg_proc = (simdata_process_t) SIMIX_process_self_get_data();
SIMIX_process_self_set_data(nullptr);
} else {
msg_proc = (simdata_process_t) simcall_process_get_data(smx_proc);
simcall_process_set_data(smx_proc, nullptr);
}
TRACE_msg_process_destroy(smx_proc->name.c_str(), smx_proc->pid);
// free the data if a function was provided
if (msg_proc && msg_proc->data && msg_global->process_data_cleanup) {
msg_global->process_data_cleanup(msg_proc->data);
}
// free the MSG process
xbt_free(msg_proc);
SIMIX_process_cleanup(smx_proc);
}
xbt_thread_t xbt_thread_self(void)
{
return SIMIX_process_self_get_data(SIMIX_process_self());
}
msg_error_t
MSG_mailbox_put_with_timeout(msg_mailbox_t mailbox, msg_task_t task,
double timeout)
{
xbt_ex_t e;
msg_error_t ret = MSG_OK;
simdata_task_t t_simdata = NULL;
msg_process_t process = MSG_process_self();
simdata_process_t p_simdata = SIMIX_process_self_get_data(process);
#ifdef HAVE_TRACING
int call_end = TRACE_msg_task_put_start(task); //must be after CHECK_HOST()
#endif
/* Prepare the task to send */
t_simdata = task->simdata;
t_simdata->sender = process;
t_simdata->source = ((simdata_process_t) SIMIX_process_self_get_data(process))->m_host;
xbt_assert(t_simdata->isused == 0,
"This task is still being used somewhere else. You cannot send it now. Go fix your code!");
t_simdata->isused=1;
t_simdata->comm = NULL;
msg_global->sent_msg++;
p_simdata->waiting_task = task;
/* Try to send it by calling SIMIX network layer */
TRY {
smx_action_t comm = simcall_comm_isend(mailbox, t_simdata->message_size,
t_simdata->rate, task, sizeof(void *),
NULL, NULL, task, 0);
#ifdef HAVE_TRACING
if (TRACE_is_enabled()) {
simcall_set_category(comm, task->category);
}
#endif
t_simdata->comm = comm;
simcall_comm_wait(comm, timeout);
}
CATCH(e) {
switch (e.category) {
case network_error:
ret = MSG_TRANSFER_FAILURE;
break;
case timeout_error:
ret = MSG_TIMEOUT;
break;
default:
RETHROW;
}
xbt_ex_free(e);
/* If the send failed, it is not used anymore */
t_simdata->isused = 0;
}
p_simdata->waiting_task = NULL;
#ifdef HAVE_TRACING
if (call_end)
TRACE_msg_task_put_end();
#endif
MSG_RETURN(ret);
}
smpi_process_data_t smpi_process_data(void)
{
simdata_process_t simdata = static_cast<simdata_process_t>(SIMIX_process_self_get_data());
return static_cast<smpi_process_data_t>(simdata->data);
}
/** \ingroup msg_task_usage
* \brief Executes a parallel task and waits for its termination.
*
* \param task a #msg_task_t to execute on the location on which the process is running.
*
* \return #MSG_OK if the task was successfully completed, #MSG_TASK_CANCELED
* or #MSG_HOST_FAILURE otherwise
*/
msg_error_t MSG_parallel_task_execute(msg_task_t task)
{
xbt_ex_t e;
simdata_task_t simdata = task->simdata;
msg_process_t self = SIMIX_process_self();
simdata_process_t p_simdata = SIMIX_process_self_get_data(self);
e_smx_state_t comp_state;
msg_error_t status = MSG_OK;
TRACE_msg_task_execute_start(task);
xbt_assert((!simdata->compute) && (task->simdata->isused == 0),
"This task is executed somewhere else. Go fix your code! %d",
task->simdata->isused!=NULL);
XBT_DEBUG("Computing on %s", MSG_process_get_name(MSG_process_self()));
if (simdata->flops_amount == 0 && !simdata->host_nb) {
TRACE_msg_task_execute_end(task);
return MSG_OK;
}
TRY {
if (msg_global->debug_multiple_use)
MSG_BT(simdata->isused, "Using Backtrace");
else
simdata->isused = (void*)1;
if (simdata->host_nb > 0) {
simdata->compute = simcall_process_parallel_execute(task->name,
simdata->host_nb,
simdata->host_list,
simdata->flops_parallel_amount,
simdata->bytes_parallel_amount,
1.0, -1.0);
XBT_DEBUG("Parallel execution action created: %p", simdata->compute);
} else {
unsigned long affinity_mask = (unsigned long) xbt_dict_get_or_null_ext(simdata->affinity_mask_db, (char *) p_simdata->m_host, sizeof(msg_host_t));
XBT_DEBUG("execute %s@%s with affinity(0x%04lx)", MSG_task_get_name(task), MSG_host_get_name(p_simdata->m_host), affinity_mask);
simdata->compute = simcall_process_execute(task->name,
simdata->flops_amount,
simdata->priority,
simdata->bound,
affinity_mask
);
}
simcall_set_category(simdata->compute, task->category);
p_simdata->waiting_action = simdata->compute;
comp_state = simcall_process_execution_wait(simdata->compute);
p_simdata->waiting_action = NULL;
if (msg_global->debug_multiple_use && simdata->isused!=0)
xbt_ex_free(*(xbt_ex_t*)simdata->isused);
simdata->isused = 0;
XBT_DEBUG("Execution task '%s' finished in state %d",
task->name, (int)comp_state);
}
CATCH(e) {
switch (e.category) {
case cancel_error:
status = MSG_TASK_CANCELED;
break;
case host_error:
status = MSG_HOST_FAILURE;
break;
default:
RETHROW;
}
xbt_ex_free(e);
}
/* action ended, set comm and compute = NULL, the actions is already destroyed
* in the main function */
simdata->flops_amount = 0.0;
simdata->comm = NULL;
simdata->compute = NULL;
TRACE_msg_task_execute_end(task);
MSG_RETURN(status);
}
/** \ingroup msg_task_usage
* \brief Executes a parallel task and waits for its termination.
*
* \param task a #msg_task_t to execute on the location on which the process is running.
*
* \return #MSG_OK if the task was successfully completed, #MSG_TASK_CANCELED
* or #MSG_HOST_FAILURE otherwise
*/
msg_error_t MSG_parallel_task_execute(msg_task_t task)
{
simdata_task_t simdata = task->simdata;
simdata_process_t p_simdata = (simdata_process_t) SIMIX_process_self_get_data();
e_smx_state_t comp_state;
msg_error_t status = MSG_OK;
TRACE_msg_task_execute_start(task);
xbt_assert((!simdata->compute) && !task->simdata->isused,
"This task is executed somewhere else. Go fix your code!");
XBT_DEBUG("Computing on %s", MSG_process_get_name(MSG_process_self()));
if (simdata->flops_amount == 0 && !simdata->host_nb) {
TRACE_msg_task_execute_end(task);
return MSG_OK;
}
try {
simdata->setUsed();
if (simdata->host_nb > 0) {
simdata->compute = static_cast<simgrid::simix::Exec*>(
simcall_execution_parallel_start(task->name, simdata->host_nb,simdata->host_list,
simdata->flops_parallel_amount, simdata->bytes_parallel_amount,
1.0, -1.0));
XBT_DEBUG("Parallel execution action created: %p", simdata->compute);
} else {
unsigned long affinity_mask =
(unsigned long)(uintptr_t) xbt_dict_get_or_null_ext(simdata->affinity_mask_db, (char *) p_simdata->m_host,
sizeof(msg_host_t));
XBT_DEBUG("execute %s@%s with affinity(0x%04lx)",
MSG_task_get_name(task), MSG_host_get_name(p_simdata->m_host), affinity_mask);
simdata->compute = static_cast<simgrid::simix::Exec*>(
simcall_execution_start(task->name, simdata->flops_amount, simdata->priority,
simdata->bound, affinity_mask));
}
simcall_set_category(simdata->compute, task->category);
p_simdata->waiting_action = simdata->compute;
comp_state = simcall_execution_wait(simdata->compute);
p_simdata->waiting_action = nullptr;
simdata->setNotUsed();
XBT_DEBUG("Execution task '%s' finished in state %d", task->name, (int)comp_state);
}
catch (xbt_ex& e) {
switch (e.category) {
case cancel_error:
status = MSG_TASK_CANCELED;
break;
case host_error:
status = MSG_HOST_FAILURE;
break;
default:
throw;
}
}
/* action ended, set comm and compute = nullptr, the actions is already destroyed in the main function */
simdata->flops_amount = 0.0;
simdata->comm = nullptr;
simdata->compute = nullptr;
TRACE_msg_task_execute_end(task);
MSG_RETURN(status);
}
msg_error_t
MSG_mailbox_put_with_timeout(msg_mailbox_t mailbox, msg_task_t task,
double timeout)
{
msg_error_t ret = MSG_OK;
simdata_task_t t_simdata = NULL;
msg_process_t process = MSG_process_self();
simdata_process_t p_simdata = SIMIX_process_self_get_data(process);
int call_end = TRACE_msg_task_put_start(task); //must be after CHECK_HOST()
/* Prepare the task to send */
t_simdata = task->simdata;
t_simdata->sender = process;
t_simdata->source = ((simdata_process_t) SIMIX_process_self_get_data(process))->m_host;
if (t_simdata->isused != 0) {
if (msg_global->debug_multiple_use){
XBT_ERROR("This task is already used in there:");
xbt_backtrace_display(t_simdata->isused);
XBT_ERROR("And you try to reuse it from here:");
xbt_backtrace_display_current();
} else {
xbt_assert(t_simdata->isused == 0,
"This task is still being used somewhere else. You cannot send it now. Go fix your code! (use --cfg=msg/debug_multiple_use:on to get the backtrace of the other process)");
}
}
if (msg_global->debug_multiple_use)
MSG_BT(t_simdata->isused, "Using Backtrace");
else
t_simdata->isused = (void*)1;
t_simdata->comm = NULL;
msg_global->sent_msg++;
p_simdata->waiting_task = task;
xbt_ex_t e;
/* Try to send it by calling SIMIX network layer */
TRY {
smx_synchro_t comm = NULL; /* MC needs the comm to be set to NULL during the simix call */
comm = simcall_comm_isend(SIMIX_process_self(), mailbox,t_simdata->bytes_amount,
t_simdata->rate, task, sizeof(void *),
NULL, NULL, NULL, task, 0);
if (TRACE_is_enabled())
simcall_set_category(comm, task->category);
t_simdata->comm = comm;
simcall_comm_wait(comm, timeout);
}
CATCH(e) {
switch (e.category) {
case cancel_error:
ret = MSG_HOST_FAILURE;
break;
case network_error:
ret = MSG_TRANSFER_FAILURE;
break;
case timeout_error:
ret = MSG_TIMEOUT;
break;
default:
RETHROW;
}
xbt_ex_free(e);
/* If the send failed, it is not used anymore */
if (msg_global->debug_multiple_use && t_simdata->isused!=0)
xbt_ex_free(*(xbt_ex_t*)t_simdata->isused);
t_simdata->isused = 0;
}
p_simdata->waiting_task = NULL;
if (call_end)
TRACE_msg_task_put_end();
MSG_RETURN(ret);
}
smpi_process_data_t smpi_process_data(void)
{
return SIMIX_process_self_get_data(SIMIX_process_self());
}
/** \ingroup msg_task_usage
* \brief Executes a parallel task and waits for its termination.
*
* \param task a #msg_task_t to execute on the location on which the process is running.
*
* \return #MSG_OK if the task was successfully completed, #MSG_TASK_CANCELED
* or #MSG_HOST_FAILURE otherwise
*/
msg_error_t MSG_parallel_task_execute(msg_task_t task)
{
xbt_ex_t e;
simdata_task_t simdata = task->simdata;
msg_process_t self = SIMIX_process_self();
simdata_process_t p_simdata = SIMIX_process_self_get_data(self);
e_smx_state_t comp_state;
msg_error_t status = MSG_OK;
#ifdef HAVE_TRACING
TRACE_msg_task_execute_start(task);
#endif
xbt_assert((!simdata->compute) && (task->simdata->isused == 0),
"This task is executed somewhere else. Go fix your code! %d",
task->simdata->isused);
XBT_DEBUG("Computing on %s", MSG_process_get_name(MSG_process_self()));
if (simdata->computation_amount == 0 && !simdata->host_nb) {
#ifdef HAVE_TRACING
TRACE_msg_task_execute_end(task);
#endif
return MSG_OK;
}
TRY {
simdata->isused=1;
if (simdata->host_nb > 0) {
simdata->compute = simcall_host_parallel_execute(task->name,
simdata->host_nb,
simdata->host_list,
simdata->comp_amount,
simdata->comm_amount,
1.0, -1.0);
XBT_DEBUG("Parallel execution action created: %p", simdata->compute);
} else {
simdata->compute = simcall_host_execute(task->name,
p_simdata->m_host,
simdata->computation_amount,
simdata->priority);
}
#ifdef HAVE_TRACING
simcall_set_category(simdata->compute, task->category);
#endif
p_simdata->waiting_action = simdata->compute;
comp_state = simcall_host_execution_wait(simdata->compute);
p_simdata->waiting_action = NULL;
simdata->isused=0;
XBT_DEBUG("Execution task '%s' finished in state %d",
task->name, (int)comp_state);
}
CATCH(e) {
switch (e.category) {
case cancel_error:
status = MSG_TASK_CANCELED;
break;
default:
RETHROW;
}
xbt_ex_free(e);
}
/* action ended, set comm and compute = NULL, the actions is already destroyed
* in the main function */
simdata->computation_amount = 0.0;
simdata->comm = NULL;
simdata->compute = NULL;
#ifdef HAVE_TRACING
TRACE_msg_task_execute_end(task);
#endif
MSG_RETURN(status);
}
