X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/b8df87e176f27b25534f27d7e240defa32ca35bc..97e476dc536bfd9fada85509d1c1f93714d46a10:/src/msg/msg_process.cpp diff --git a/src/msg/msg_process.cpp b/src/msg/msg_process.cpp index 5c52d31e6c..7a0e6a0be8 100644 --- a/src/msg/msg_process.cpp +++ b/src/msg/msg_process.cpp @@ -1,29 +1,20 @@ -/* Copyright (c) 2004-2019. The SimGrid Team. All rights reserved. */ +/* Copyright (c) 2004-2022. 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" -#include "src/simix/smx_private.hpp" - -XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_process, msg, "Logging specific to MSG (process)"); - -std::string instr_pid(msg_process_t proc) -{ - return std::string(proc->get_cname()) + "-" + std::to_string(proc->get_pid()); -} +#include "src/kernel/EngineImpl.hpp" /******************************** Process ************************************/ - /** @brief Creates and runs a new #msg_process_t. * * Does exactly the same as #MSG_process_create_with_arguments but without providing standard arguments * (@a argc, @a argv, @a start_time, @a kill_time). */ -msg_process_t MSG_process_create(const char *name, xbt_main_func_t code, void *data, msg_host_t host) +msg_process_t MSG_process_create(const char* name, int (*code)(int, char**), void* data, msg_host_t host) { return MSG_process_create_with_environment(name == nullptr ? "" : name, code, data, host, 0, nullptr, nullptr); } @@ -35,14 +26,14 @@ msg_process_t MSG_process_create(const char *name, xbt_main_func_t code, void *d * @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. * @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. + * can be nullptr. It can be retrieved with the function 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) +msg_process_t MSG_process_create_with_arguments(const char* name, int (*code)(int, char**), void* data, msg_host_t host, + int argc, char** argv) { return MSG_process_create_with_environment(name, code, data, host, argc, argv, nullptr); } @@ -55,7 +46,7 @@ msg_process_t MSG_process_create_with_arguments(const char *name, xbt_main_func_ * @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. * @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. + * can be nullptr. It can be retrieved with the function 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 @@ -64,95 +55,33 @@ msg_process_t MSG_process_create_with_arguments(const char *name, xbt_main_func_ * @see msg_process_t * @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) +msg_process_t MSG_process_create_with_environment(const char* name, int (*code)(int, char**), 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"); + sg_actor_t actor = sg_actor_init(std::move(name), host); + + try { + if (data != nullptr) { + sg_actor_set_data(actor, data); + xbt_dict_cursor_t cursor = nullptr; + char* key; + char* value; + xbt_dict_foreach (properties, cursor, key, value) + actor->set_property(key, value); + } + actor->start(std::move(simgrid::xbt::wrap_main(code, argc, argv))); + } catch (simgrid::HostFailureException const&) { + xbt_die("Could not launch a new process on failed host %s.", host->get_cname()); + } - simgrid::simix::ActorCode function; - if (code) - function = simgrid::xbt::wrap_main(code, argc, static_cast(argv)); - - std::unordered_map 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); - - smx_actor_t process = simcall_process_create(name, std::move(function), data, host, &props); for (int i = 0; i != argc; ++i) xbt_free(argv[i]); xbt_free(argv); - if (process == nullptr) - return nullptr; - - MSG_process_yield(); - return process->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 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(); -} - -/** @brief 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(); -} - -/** @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. - */ -void* MSG_process_get_data(msg_process_t process) -{ - xbt_assert(process != nullptr, "Invalid parameter: first parameter must not be nullptr!"); - - /* get from SIMIX the MSG process data, and then the user data */ - return process->get_impl()->get_user_data(); -} - -/** @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. - */ -msg_error_t MSG_process_set_data(msg_process_t process, void *data) -{ - xbt_assert(process != nullptr, "Invalid parameter: first parameter must not be nullptr!"); - - process->get_impl()->set_user_data(data); - - return MSG_OK; + simgrid::s4u::this_actor::yield(); + return actor; } /** @brief Sets a cleanup function to be called to free the userdata of a process when a process is destroyed. @@ -162,75 +91,3 @@ XBT_PUBLIC void MSG_process_set_data_cleanup(void_f_pvoid_t data_cleanup) { msg_global->process_data_cleanup = data_cleanup; } - -/** @brief returns a list of all currently existing processes */ -xbt_dynar_t MSG_processes_as_dynar() { - xbt_dynar_t res = xbt_dynar_new(sizeof(smx_actor_t), nullptr); - for (auto const& kv : simix_global->process_list) { - smx_actor_t actor = kv.second; - xbt_dynar_push(res, &actor); - } - return res; -} - -/** @brief Return the current number MSG processes. */ -int MSG_process_get_number() -{ - return SIMIX_process_count(); -} - -/** @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_; -} - -/** @brief Return the PPID of the current process. - * - * This function returns the PID of the parent of the currently running #msg_process_t. - */ -int MSG_process_self_PPID() -{ - return MSG_process_get_PPID(MSG_process_self()); -} - -/** @brief Return the name of the current process. */ -const char* MSG_process_self_name() -{ - return SIMIX_process_self_get_name(); -} - -/** @brief Return the current process. - * - * This function returns the currently running #msg_process_t. - */ -msg_process_t MSG_process_self() -{ - return SIMIX_process_self()->ciface(); -} - -smx_context_t MSG_process_get_smx_ctx(msg_process_t process) { // deprecated -- smx_context_t should die afterward - return process->get_impl()->context_; -} -/** @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); -} - -/** @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); -} -/** @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); -}