-/* Copyright (c) 2004-2015. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2004-2017. 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 "msg_private.h"
-#include "xbt/sysdep.h"
-#include "xbt/log.h"
-#include "src/simix/smx_process_private.h"
-#include "src/simix/smx_private.h"
+#include "simgrid/s4u/Host.hpp"
+#include "src/simix/ActorImpl.hpp"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_process, msg, "Logging specific to MSG (process)");
+SG_BEGIN_DECL()
+
/** @addtogroup m_process_management
*
* Processes (#msg_process_t) are independent agents that can do stuff on their own. They are in charge of executing
/******************************** Process ************************************/
/**
- * \brief Cleans the MSG data of a process.
- * \param smx_proc a SIMIX process
+ * \brief Cleans the MSG data of an actor
+ * \param smx_actor a SIMIX actor
*/
-void MSG_process_cleanup_from_SIMIX(smx_process_t smx_proc)
+void MSG_process_cleanup_from_SIMIX(smx_actor_t smx_actor)
{
- simdata_process_t msg_proc;
+ simgrid::msg::ActorExt* msg_actor;
// get the MSG process from the SIMIX process
- if (smx_proc == SIMIX_process_self()) {
+ if (smx_actor == 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(NULL);
+ msg_actor = (simgrid::msg::ActorExt*)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, NULL);
+ msg_actor = (simgrid::msg::ActorExt*)smx_actor->data;
+ simcall_process_set_data(smx_actor, nullptr);
}
- TRACE_msg_process_destroy(smx_proc->name, smx_proc->pid);
+ TRACE_msg_process_destroy(smx_actor->name.c_str(), smx_actor->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);
+ if (msg_actor && msg_actor->data && msg_global->process_data_cleanup) {
+ msg_global->process_data_cleanup(msg_actor->data);
}
- // free the MSG process
- xbt_free(msg_proc);
- SIMIX_process_cleanup(smx_proc);
+ delete msg_actor;
+ SIMIX_process_cleanup(smx_actor);
}
/* This function creates a MSG process. It has the prototype enforced by SIMIX_function_register_process_create */
-smx_process_t MSG_process_create_from_SIMIX(const char *name, xbt_main_func_t code, void *data, const char *hostname,
- double kill_time, int argc, char **argv, xbt_dict_t properties,
- int auto_restart, smx_process_t parent_process)
-{
- msg_host_t host = MSG_host_by_name(hostname);
- msg_process_t p = MSG_process_create_with_environment(name, code, data, host, argc, argv, properties);
- if (p) {
- MSG_process_set_kill_time(p,kill_time);
- MSG_process_auto_restart_set(p,auto_restart);
- }
- return p;
+smx_actor_t MSG_process_create_from_SIMIX(const char* name, std::function<void()> code, void* data, sg_host_t host,
+ xbt_dict_t properties, smx_actor_t parent_process)
+{
+ msg_process_t p = MSG_process_create_from_stdfunc(name, std::move(code), data, host, properties);
+ return p == nullptr ? nullptr : p->getImpl();
}
/** \ingroup m_process_management
*/
msg_process_t MSG_process_create(const char *name, xbt_main_func_t code, void *data, msg_host_t host)
{
- return MSG_process_create_with_environment(name, code, data, host, 0, NULL, NULL);
+ return MSG_process_create_with_environment(name, code, data, host, 0, nullptr, nullptr);
}
/** \ingroup m_process_management
* A constructor for #msg_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 name a name for the object. It is for user-level information and can be nullptr.
* \param code is a function describing the behavior of the process. It should then only use functions described
* in \ref m_process_management (to create a new #msg_process_t for example),
in \ref m_host_management (only the read-only functions i.e. whose name contains the word get),
in \ref m_task_management (to create or destroy some #msg_task_t for example) and
in \ref msg_task_usage (to handle file transfers and task processing).
* \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.
+ * can be nullptr. It can be retrieved with the function \ref MSG_process_get_data.
* \param host the location where the new process is executed.
* \param argc first argument passed to \a code
* \param argv second argument passed to \a code
msg_process_t MSG_process_create_with_arguments(const char *name, xbt_main_func_t code, void *data, msg_host_t host,
int argc, char **argv)
{
- return MSG_process_create_with_environment(name, code, data, host, argc, argv, NULL);
+ return MSG_process_create_with_environment(name, code, data, host, argc, argv, nullptr);
}
/** \ingroup m_process_management
* A constructor for #msg_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 name a name for the object. It is for user-level information and can be nullptr.
* \param code is a function describing the behavior of the process. It should then only use functions described
* in \ref m_process_management (to create a new #msg_process_t for example),
in \ref m_host_management (only the read-only functions i.e. whose name contains the word get),
in \ref m_task_management (to create or destroy some #msg_task_t for example) and
in \ref msg_task_usage (to handle file transfers and task processing).
* \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.
+ * can be nullptr. It can be retrieved with the function \ref MSG_process_get_data.
* \param host the location where the new process is executed.
* \param argc first argument passed to \a code
* \param argv second argument passed to \a code. WARNING, these strings are freed by the SimGrid kernel when the
* \return The new corresponding object.
*/
msg_process_t MSG_process_create_with_environment(const char *name, xbt_main_func_t code, void *data, msg_host_t host,
- int argc, char **argv, xbt_dict_t properties)
-{
- xbt_assert(code != NULL && host != NULL, "Invalid parameters: host and code params must not be NULL");
- simdata_process_t simdata = xbt_new0(s_simdata_process_t, 1);
- msg_process_t process;
-
- /* Simulator data for MSG */
- simdata->waiting_action = NULL;
- simdata->waiting_task = NULL;
- simdata->m_host = host;
- simdata->argc = argc;
- simdata->argv = argv;
- simdata->data = data;
- simdata->last_errno = MSG_OK;
-
- /* Let's create the process: SIMIX may decide to start it right now,
- * even before returning the flow control to us */
- process = simcall_process_create(name, code, simdata, sg_host_get_name(host), -1, argc, argv, properties,0);
-
- if (!process) {
- /* Undo everything we have just changed */
- xbt_free(simdata);
- return NULL;
- }
- else {
- simcall_process_on_exit(process,(int_f_pvoid_pvoid_t)TRACE_msg_process_kill,process);
- }
- return process;
+ int argc, char **argv, xbt_dict_t properties)
+{
+ std::function<void()> function;
+ if (code)
+ function = simgrid::xbt::wrapMain(code, argc, static_cast<const char* const*>(argv));
+
+ msg_process_t res = MSG_process_create_from_stdfunc(name, std::move(function), data, host, properties);
+ for (int i = 0; i != argc; ++i)
+ xbt_free(argv[i]);
+ xbt_free(argv);
+ return res;
}
-static int MSG_maestro(int argc, char** argv)
+SG_END_DECL()
+
+msg_process_t MSG_process_create_from_stdfunc(const char* name, std::function<void()> code, void* data, msg_host_t host,
+ xbt_dict_t properties)
{
- int res = MSG_main();
- return res;
+ xbt_assert(code != nullptr && host != nullptr, "Invalid parameters: host and code params must not be nullptr");
+ simgrid::msg::ActorExt* msgExt = new simgrid::msg::ActorExt(data);
+
+ smx_actor_t process = simcall_process_create(name, std::move(code), msgExt, host, properties);
+
+ if (not process) { /* Undo everything */
+ delete msgExt;
+ return nullptr;
+ }
+
+ simcall_process_on_exit(process, (int_f_pvoid_pvoid_t)TRACE_msg_process_kill, process);
+ return process->ciface();
}
+SG_BEGIN_DECL()
+
/* Become a process in the simulation
*
* Currently this can only be called by the main thread (once) and only work with some thread factories
*/
msg_process_t MSG_process_attach(const char *name, void *data, msg_host_t host, xbt_dict_t properties)
{
- xbt_assert(host != NULL, "Invalid parameters: host and code params must not be NULL");
- simdata_process_t simdata = xbt_new0(s_simdata_process_t, 1);
- msg_process_t process;
-
- /* Simulator data for MSG */
- simdata->waiting_action = NULL;
- simdata->waiting_task = NULL;
- simdata->m_host = host;
- simdata->argc = 0;
- simdata->argv = NULL;
- simdata->data = data;
- simdata->last_errno = MSG_OK;
+ xbt_assert(host != nullptr, "Invalid parameters: host and code params must not be nullptr");
/* Let's create the process: SIMIX may decide to start it right now, even before returning the flow control to us */
- process = SIMIX_process_attach(name, simdata, sg_host_get_name(host), properties, NULL);
- if (!process)
+ smx_actor_t process =
+ SIMIX_process_attach(name, new simgrid::msg::ActorExt(data), host->cname(), properties, nullptr);
+ if (not process)
xbt_die("Could not attach");
simcall_process_on_exit(process,(int_f_pvoid_pvoid_t)TRACE_msg_process_kill,process);
- return process;
+ return process->ciface();
}
/** Detach a process attached with `MSG_process_attach()`
* Used in the main thread, it waits for the simulation to finish before returning. When it returns, the other
* simulated processes and the maestro are destroyed.
*/
-void MSG_process_detach(void)
+void MSG_process_detach()
{
SIMIX_process_detach();
}
*/
void MSG_process_kill(msg_process_t process)
{
-// /* FIXME: why do we only cancel communication actions? is this useful? */
-// simdata_process_t p_simdata = simcall_process_get_data(process);
-// if (p_simdata->waiting_task && p_simdata->waiting_task->simdata->comm) {
-// simcall_comm_cancel(p_simdata->waiting_task->simdata->comm);
-// }
- simcall_process_kill(process);
+ simcall_process_kill(process->getImpl());
}
/**
* \param timeout wait until the process is over, or the timeout occurs
*/
msg_error_t MSG_process_join(msg_process_t process, double timeout){
- simcall_process_join(process, timeout);
+ simcall_process_join(process->getImpl(), timeout);
return MSG_OK;
}
*/
msg_error_t MSG_process_migrate(msg_process_t process, msg_host_t host)
{
- simdata_process_t simdata = (simdata_process_t) simcall_process_get_data(process);
- simdata->m_host = host;
- msg_host_t now = simdata->m_host;
- TRACE_msg_process_change_host(process, now, host);
- simcall_process_set_host(process, host);
+ TRACE_msg_process_change_host(process, MSG_process_get_host(process), host);
+ simcall_process_set_host(process->getImpl(), host);
return MSG_OK;
}
+/** Yield the current actor; let the other actors execute first */
+void MSG_process_yield()
+{
+ simgrid::simix::kernelImmediate([] { /* do nothing*/ });
+}
+
/** \ingroup m_process_management
* \brief Returns the user data of a process.
*
*/
void* MSG_process_get_data(msg_process_t process)
{
- xbt_assert(process != NULL, "Invalid parameter: first parameter must not be NULL!");
+ xbt_assert(process != nullptr, "Invalid parameter: first parameter must not be nullptr!");
/* get from SIMIX the MSG process data, and then the user data */
- simdata_process_t simdata = (simdata_process_t) simcall_process_get_data(process);
- if (simdata)
- return simdata->data;
+ simgrid::msg::ActorExt* msgExt = (simgrid::msg::ActorExt*)process->getImpl()->data;
+ if (msgExt)
+ return msgExt->data;
else
- return NULL;
+ return nullptr;
}
/** \ingroup m_process_management
*/
msg_error_t MSG_process_set_data(msg_process_t process, void *data)
{
- xbt_assert(process != NULL, "Invalid parameter: first parameter must not be NULL!");
+ xbt_assert(process != nullptr, "Invalid parameter: first parameter must not be nullptr!");
- simdata_process_t simdata = (simdata_process_t) simcall_process_get_data(process);
- simdata->data = data;
+ static_cast<simgrid::msg::ActorExt*>(process->getImpl()->data)->data = data;
return MSG_OK;
}
/** \ingroup m_process_management
* \brief Sets a cleanup function to be called to free the userdata of a process when a process is destroyed.
- * \param data_cleanup a cleanup function for the userdata of a process, or NULL to call no function
+ * \param data_cleanup a cleanup function for the userdata of a process, or nullptr to call no function
*/
XBT_PUBLIC(void) MSG_process_set_data_cleanup(void_f_pvoid_t data_cleanup) {
msg_global->process_data_cleanup = data_cleanup;
/** \ingroup m_process_management
* \brief Return the location on which a process is running.
- * \param process a process (NULL means the current one)
+ * \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 == NULL) {
- simdata = (simdata_process_t) SIMIX_process_self_get_data();
- }
- else {
- simdata = (simdata_process_t) simcall_process_get_data(process);
+ if (process == nullptr) {
+ return SIMIX_process_self()->host;
+ } else {
+ return process->getImpl()->host;
}
- return simdata ? simdata->m_host : NULL;
}
/** \ingroup m_process_management
* \brief Return a #msg_process_t given its PID.
*
* This function search in the list of all the created msg_process_t for a msg_process_t whose PID is equal to \a PID.
- * If no host is found, \c NULL is returned.
+ * If no host is found, \c nullptr is returned.
Note that the PID are uniq in the whole simulation, not only on a given host.
*/
msg_process_t MSG_process_from_PID(int PID)
{
- return SIMIX_process_from_PID(PID);
+ return SIMIX_process_from_PID(PID)->ciface();
}
/** @brief returns a list of all currently existing processes */
-xbt_dynar_t MSG_processes_as_dynar(void) {
+xbt_dynar_t MSG_processes_as_dynar() {
return SIMIX_processes_as_dynar();
}
/** @brief Return the current number MSG processes. */
-int MSG_process_get_number(void)
+int MSG_process_get_number()
{
return SIMIX_process_count();
}
*/
msg_error_t MSG_process_set_kill_time(msg_process_t process, double kill_time)
{
- simcall_process_set_kill_time(process,kill_time);
+ simcall_process_set_kill_time(process->getImpl(), kill_time);
return MSG_OK;
}
{
/* 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) {
+ if (process == nullptr || process->getImpl() == nullptr)
return 0;
- }
- return simcall_process_get_PID(process);
+ return process->getImpl()->pid;
}
/** \ingroup m_process_management
*/
int MSG_process_get_PPID(msg_process_t process)
{
- xbt_assert(process != NULL, "Invalid parameter: First argument must not be NULL");
- return simcall_process_get_PPID(process);
+ return process->getImpl()->ppid;
}
/** \ingroup m_process_management
*/
const char *MSG_process_get_name(msg_process_t process)
{
- xbt_assert(process != NULL, "Invalid parameter: First argument must not be NULL");
- return simcall_process_get_name(process);
+ return process->cname();
}
/** \ingroup m_process_management
*
* \param process a process
* \param name a property name
- * \return value of a property (or NULL if the property is not set)
+ * \return value of a property (or nullptr if the property is not set)
*/
const char *MSG_process_get_property_value(msg_process_t process, const char *name)
{
*/
xbt_dict_t MSG_process_get_properties(msg_process_t process)
{
- xbt_assert(process != NULL, "Invalid parameter: First argument must not be NULL");
- return simcall_process_get_properties(process);
+ xbt_assert(process != nullptr, "Invalid parameter: First argument must not be nullptr");
+ return simcall_process_get_properties(process->getImpl());
}
/** \ingroup m_process_management
*
* This function returns the PID of the currently running #msg_process_t.
*/
-int MSG_process_self_PID(void)
+int MSG_process_self_PID()
{
- return MSG_process_get_PID(MSG_process_self());
+ smx_actor_t self = SIMIX_process_self();
+ return self == nullptr ? 0 : self->pid;
}
/** \ingroup m_process_management
*
* This function returns the PID of the parent of the currently running #msg_process_t.
*/
-int MSG_process_self_PPID(void)
+int MSG_process_self_PPID()
{
return MSG_process_get_PPID(MSG_process_self());
}
+/** \ingroup m_process_management
+ * \brief Return the name of the current process.
+ */
+const char* MSG_process_self_name()
+{
+ return SIMIX_process_self_get_name();
+}
+
/** \ingroup m_process_management
* \brief Return the current process.
*
* This function returns the currently running #msg_process_t.
*/
-msg_process_t MSG_process_self(void)
+msg_process_t MSG_process_self()
{
- return SIMIX_process_self();
+ return SIMIX_process_self()->ciface();
}
/** \ingroup m_process_management
*/
msg_error_t MSG_process_suspend(msg_process_t process)
{
- xbt_assert(process != NULL, "Invalid parameter: First argument must not be NULL");
+ xbt_assert(process != nullptr, "Invalid parameter: First argument must not be nullptr");
TRACE_msg_process_suspend(process);
- simcall_process_suspend(process);
- MSG_RETURN(MSG_OK);
+ simcall_process_suspend(process->getImpl());
+ return MSG_OK;
}
/** \ingroup m_process_management
*/
msg_error_t MSG_process_resume(msg_process_t process)
{
- xbt_assert(process != NULL, "Invalid parameter: First argument must not be NULL");
+ xbt_assert(process != nullptr, "Invalid parameter: First argument must not be nullptr");
TRACE_msg_process_resume(process);
- simcall_process_resume(process);
- MSG_RETURN(MSG_OK);
+ simcall_process_resume(process->getImpl());
+ return MSG_OK;
}
/** \ingroup m_process_management
*/
int MSG_process_is_suspended(msg_process_t process)
{
- xbt_assert(process != NULL, "Invalid parameter: First argument must not be NULL");
- return simcall_process_is_suspended(process);
+ return simcall_process_is_suspended(process->getImpl());
}
smx_context_t MSG_process_get_smx_ctx(msg_process_t process) {
- return SIMIX_process_get_context(process);
+ return SIMIX_process_get_context(process->getImpl());
}
/**
* \ingroup m_process_management
* You should use them to free the data used by your process.
*/
void MSG_process_on_exit(int_f_pvoid_pvoid_t fun, void *data) {
- simcall_process_on_exit(MSG_process_self(),fun,data);
+ simcall_process_on_exit(SIMIX_process_self(), fun, data);
}
/**
* \ingroup m_process_management
* If the flag is set to 1, the process will be automatically restarted when its host comes back up.
*/
XBT_PUBLIC(void) MSG_process_auto_restart_set(msg_process_t process, int auto_restart) {
- simcall_process_auto_restart_set(process,auto_restart);
+ simcall_process_auto_restart_set(process->getImpl(), auto_restart);
}
-/*
+/**
* \ingroup m_process_management
* \brief Restarts a process from the beginning.
*/
XBT_PUBLIC(msg_process_t) MSG_process_restart(msg_process_t process) {
- return simcall_process_restart(process);
+ return simcall_process_restart(process->getImpl())->ciface();
+}
+
+/** @ingroup m_process_management
+ * @brief This process will be terminated automatically when the last non-daemon process finishes
+ */
+XBT_PUBLIC(void) MSG_process_daemonize(msg_process_t process)
+{
+ simgrid::simix::kernelImmediate([process]() {
+ process->getImpl()->daemonize();
+ });
+}
+
+/** @ingroup m_process_management
+ * @brief Take an extra reference on that process to prevent it to be garbage-collected
+ */
+XBT_PUBLIC(void) MSG_process_ref(msg_process_t process)
+{
+ intrusive_ptr_add_ref(process);
}
+/** @ingroup m_process_management
+ * @brief Release a reference on that process so that it can get be garbage-collected
+ */
+XBT_PUBLIC(void) MSG_process_unref(msg_process_t process)
+{
+ intrusive_ptr_release(process);
+}
+
+SG_END_DECL()
