-/* Copyright (c) 2004-2018. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2004-2019. 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.hpp"
+#include "simgrid/Exception.hpp"
#include "simgrid/s4u/Host.hpp"
#include "src/instr/instr_private.hpp"
#include "src/simix/ActorImpl.hpp"
std::string instr_pid(msg_process_t proc)
{
- return std::string(proc->get_cname()) + "-" + std::to_string(proc->get_pid());
+ return std::string(proc->get_name()) + "-" + std::to_string(proc->get_pid());
}
-/** @addtogroup m_process_management
- *
- * Processes (#msg_process_t) are independent agents that can do stuff on their own. They are in charge of executing
- * your code interacting with the simulated world.
- * A process may be defined as a <em>code</em> with some <em>private data</em>.
- * Processes must be located on <em>hosts</em> (#msg_host_t), and they exchange data by sending tasks (#msg_task_t)
- * that are similar to envelops containing data.
- */
-
/******************************** Process ************************************/
-/**
- * @brief Cleans the MSG data of an actor
- * @param smx_actor a SIMIX actor
- */
-void MSG_process_cleanup_from_SIMIX(smx_actor_t smx_actor)
-{
- // free the data if a function was provided
- void* userdata = smx_actor->get_user_data();
- if (userdata && msg_global->process_data_cleanup) {
- msg_global->process_data_cleanup(userdata);
- }
-
- SIMIX_process_cleanup(smx_actor);
-}
-
-/* This function creates a MSG process. It has the prototype enforced by SIMIX_function_register_process_create */
-smx_actor_t MSG_process_create_from_SIMIX(std::string name, simgrid::simix::ActorCode code, void* data, sg_host_t host,
- std::unordered_map<std::string, std::string>* 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->get_impl();
-}
/** @brief Creates and runs a new #msg_process_t.
*
return MSG_process_create_with_environment(name == nullptr ? "" : name, code, data, host, 0, nullptr, nullptr);
}
-/** @brief Creates and runs a new #msg_process_t.
+/** @brief Creates and runs a new process.
* 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 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 code is a function describing the behavior of the process.
* @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 nullptr. It can be retrieved with the function @ref MSG_process_get_data.
* @param host the location where the new process is executed.
return MSG_process_create_with_environment(name, code, data, host, argc, argv, nullptr);
}
-/** @ingroup m_process_management
+/**
* @brief Creates and runs a new #msg_process_t.
* 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 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 code is a function describing the behavior of the process.
* @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 nullptr. It can be retrieved with the function @ref MSG_process_get_data.
* @param host the location where the new process is executed.
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(host != nullptr, "Invalid parameters: host param must not be nullptr");
+
simgrid::simix::ActorCode function;
if (code)
function = simgrid::xbt::wrap_main(code, argc, static_cast<const char* const*>(argv));
props[key] = value;
xbt_dict_free(&properties);
- msg_process_t res = MSG_process_create_from_stdfunc(name, std::move(function), data, host, &props);
+ smx_actor_t self = SIMIX_process_self();
+ smx_actor_t actor = nullptr;
+ try {
+ actor = simgrid::simix::simcall([name, function, data, host, &props, self] {
+ return simgrid::kernel::actor::ActorImpl::create(std::move(name), std::move(function), data, host, &props, self)
+ .get();
+ });
+ } catch (simgrid::HostFailureException const&) {
+ xbt_die("Could not create a new process on failed host %s.", host->get_cname());
+ }
+
for (int i = 0; i != argc; ++i)
xbt_free(argv[i]);
xbt_free(argv);
- return res;
-}
-
-msg_process_t MSG_process_create_from_stdfunc(std::string name, simgrid::simix::ActorCode code, void* data,
- msg_host_t host, std::unordered_map<std::string, std::string>* properties)
-{
- xbt_assert(code != nullptr && host != nullptr, "Invalid parameters: host and code params must not be nullptr");
- smx_actor_t process = simcall_process_create(name, std::move(code), data, host, properties);
-
- if (process == nullptr)
+ if (actor == nullptr)
return nullptr;
MSG_process_yield();
- return process->ciface();
+ return actor->ciface();
}
-/* Become a process in the simulation
- *
- * Currently this can only be called by the main thread (once) and only work with some thread factories
- * (currently ThreadContextFactory).
- *
- * In the future, it might be extended in order to attach other threads created by a third party library.
- */
-msg_process_t MSG_process_attach(const char *name, void *data, msg_host_t host, xbt_dict_t properties)
-{
- xbt_assert(host != nullptr, "Invalid parameters: host and code params must not be nullptr");
- std::unordered_map<std::string, std::string> props;
- xbt_dict_cursor_t cursor = nullptr;
- char* key;
- char* value;
- xbt_dict_foreach (properties, cursor, key, value)
- props[key] = value;
- xbt_dict_free(&properties);
-
- /* Let's create the process: SIMIX may decide to start it right now, even before returning the flow control to us */
- smx_actor_t process = SIMIX_process_attach(name, data, host->get_cname(), &props, nullptr);
- if (not process)
- xbt_die("Could not attach");
- MSG_process_yield();
- return process->ciface();
-}
-
-/** Detach a process attached with `MSG_process_attach()`
- *
- * This is called when the current process has finished its job.
- * 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()
-{
- SIMIX_process_detach();
-}
-
-/** @ingroup m_process_management
- * @brief Returns the user data of a process.
+/** @brief Returns the user data of a process.
*
* This function checks whether @a process is a valid pointer and returns the user data associated to this process.
*/
return process->get_impl()->get_user_data();
}
-/** @ingroup m_process_management
- * @brief Sets the user data of a process.
+/** @brief Sets the user data of a process.
*
* This function checks whether @a process is a valid pointer and sets the user data associated to this process.
*/
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.
+/** @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 nullptr to call no function
*/
XBT_PUBLIC void MSG_process_set_data_cleanup(void_f_pvoid_t data_cleanup)
return SIMIX_process_count();
}
-/** @ingroup m_process_management
- * @brief Return the PID of the current process.
+/** @brief Return the PID of the current process.
*
* This function returns the PID of the currently running #msg_process_t.
*/
int MSG_process_self_PID()
{
smx_actor_t self = SIMIX_process_self();
- return self == nullptr ? 0 : self->pid_;
+ return self == nullptr ? 0 : self->get_pid();
}
-/** @ingroup m_process_management
- * @brief Return the PPID of the current process.
+/** @brief Return the PPID of the current process.
*
* This function returns the PID of the parent of the currently running #msg_process_t.
*/
return MSG_process_get_PPID(MSG_process_self());
}
-/** @ingroup m_process_management
- * @brief Return the name of the current process.
- */
+/** @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.
+/** @brief Return the current process.
*
* This function returns the currently running #msg_process_t.
*/
smx_context_t MSG_process_get_smx_ctx(msg_process_t process) { // deprecated -- smx_context_t should die afterward
return process->get_impl()->context_;
}
-/**
- * @ingroup m_process_management
- * @brief Add a function to the list of "on_exit" functions for the current process.
- * The on_exit functions are the functions executed when your process is killed.
- * You should use them to free the data used by your process.
+/** @brief Add a function to the list of "on_exit" functions for the current process.
+ * The on_exit functions are the functions executed when your process is killed.
+ * 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) {
- simgrid::s4u::this_actor::on_exit([fun](int a, void* b) { fun((void*)(intptr_t)a, b); }, data);
+void MSG_process_on_exit(int_f_int_pvoid_t fun, void* data)
+{
+ simgrid::s4u::this_actor::on_exit(
+ [fun, data](bool failed) { fun(failed ? SMX_EXIT_FAILURE : SMX_EXIT_SUCCESS, data); });
}
-/** @ingroup m_process_management
- * @brief Take an extra reference on that process to prevent it to be garbage-collected
- */
+/** @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
- */
+/** @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);
