X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/7e42dd535dfc0d68de20fba4b9fc5e480b56c74b..5f5a10db6fc4552782638abb4817041223e17775:/src/kernel/context/Context.hpp diff --git a/src/kernel/context/Context.hpp b/src/kernel/context/Context.hpp index 6271a8b704..16c5e82274 100644 --- a/src/kernel/context/Context.hpp +++ b/src/kernel/context/Context.hpp @@ -1,4 +1,4 @@ -/* Copyright (c) 2007-2018. The SimGrid Team. All rights reserved. */ +/* Copyright (c) 2007-2023. 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. */ @@ -6,41 +6,35 @@ #ifndef SIMGRID_KERNEL_CONTEXT_CONTEXT_HPP #define SIMGRID_KERNEL_CONTEXT_CONTEXT_HPP -#include "simgrid/forward.h" -#include "src/internal_config.h" +#include +#include + #include "src/kernel/activity/ActivityImpl.hpp" #include +#include -/* Process creation/destruction callbacks */ -typedef void (*void_pfn_smxprocess_t)(smx_actor_t); - -namespace simgrid { -namespace kernel { -namespace context { +namespace simgrid::kernel::context { class XBT_PUBLIC ContextFactory { -private: - std::string name_; - public: - explicit ContextFactory(std::string name) : name_(std::move(name)) {} + explicit ContextFactory() = default; + ContextFactory(const ContextFactory&) = delete; + ContextFactory& operator=(const ContextFactory&) = delete; virtual ~ContextFactory(); - virtual Context* create_context(std::function code, void_pfn_smxprocess_t cleanup, smx_actor_t process) = 0; + virtual Context* create_context(std::function&& code, actor::ActorImpl* actor) = 0; /** Turn the current thread into a simulation context */ - virtual Context* attach(void_pfn_smxprocess_t cleanup_func, smx_actor_t process); + virtual Context* attach(actor::ActorImpl* actor); /** Turn the current thread into maestro (the old maestro becomes a regular actor) */ - virtual Context* create_maestro(std::function code, smx_actor_t process); + virtual Context* create_maestro(std::function&& code, actor::ActorImpl* actor); - virtual void run_all() = 0; - std::string const& name() const { return name_; } + virtual void run_all(std::vector const& actors_list) = 0; protected: template T* new_context(Args&&... args) { - T* context = new T(std::forward(args)...); - context->declare_context(sizeof(T)); + auto* context = new T(std::forward(args)...); return context; } }; @@ -48,111 +42,79 @@ protected: class XBT_PUBLIC Context { friend ContextFactory; -private: + static int parallel_contexts; + static thread_local Context* current_context_; + std::function code_; - void_pfn_smxprocess_t cleanup_func_ = nullptr; - smx_actor_t actor_ = nullptr; - void declare_context(std::size_t size); + actor::ActorImpl* actor_ = nullptr; + bool is_maestro_; public: - bool iwannadie = false; + static e_xbt_parmap_mode_t parallel_mode; + static unsigned stack_size; + static unsigned guard_size; + + static int install_sigsegv_stack(bool enable); - Context(std::function code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process); + Context(std::function&& code, actor::ActorImpl* actor, bool maestro); Context(const Context&) = delete; Context& operator=(const Context&) = delete; virtual ~Context(); - void operator()() { code_(); } + bool is_maestro() const { return is_maestro_; } + void operator()() const { code_(); } bool has_code() const { return static_cast(code_); } - smx_actor_t process() { return this->actor_; } - void set_cleanup(void_pfn_smxprocess_t cleanup) { cleanup_func_ = cleanup; } + actor::ActorImpl* get_actor() const { return this->actor_; } + + /** @brief Returns whether some parallel threads are used for the user contexts. */ + static bool is_parallel() { return parallel_contexts > 1; } + /** @brief Returns the number of parallel threads used for the user contexts (1 means no parallelism). */ + static int get_nthreads() { return parallel_contexts; } + /** + * @brief Sets the number of parallel threads to use for the user contexts. + * + * This function should be called before initializing SIMIX. + * A value of 1 means no parallelism (1 thread only). + * If the value is greater than 1, the thread support must be enabled. + * If the value is less than 1, the optimal number of threads is chosen automatically. + * + * @param nb_threads the number of threads to use + */ + static void set_nthreads(int nb_threads); // Scheduling methods virtual void stop(); virtual void suspend() = 0; // Retrieving the self() context - /** @brief Retrives the current context of this thread */ + /** @brief Retrieves the current context of this thread */ static Context* self(); /** @brief Sets the current context of this thread */ static void set_current(Context* self); - - class StopRequest { - /** @brief Exception launched to kill a process, in order to properly unwind its stack and release RAII stuff - * - * Nope, Sonar, this should not inherit of std::exception nor of simgrid::Exception. - * Otherwise, users may accidentally catch it with a try {} catch (std::exception) - */ - public: - StopRequest() = default; - explicit StopRequest(std::string msg) : msg_(msg) {} - - private: - std::string msg_; - }; }; class XBT_PUBLIC AttachContext : public Context { public: - AttachContext(std::function code, void_pfn_smxprocess_t cleanup_func, smx_actor_t actor) - : Context(std::move(code), cleanup_func, actor) + AttachContext(std::function&& code, actor::ActorImpl* actor, bool maestro) + : Context(std::move(code), actor, maestro) { } - + AttachContext(const AttachContext&) = delete; + AttachContext& operator=(const AttachContext&) = delete; ~AttachContext() override; - /** Called by the context when it is ready to give control - * to the maestro. - */ + /** Called by the context when it is ready to give control to the maestro */ virtual void attach_start() = 0; /** Called by the context when it has finished its job */ virtual void attach_stop() = 0; }; -/* This allows Java to hijack the context factory (Java induces factories of factory :) */ -typedef ContextFactory* (*ContextFactoryInitializer)(); -XBT_PUBLIC_DATA ContextFactoryInitializer factory_initializer; - XBT_PRIVATE ContextFactory* thread_factory(); XBT_PRIVATE ContextFactory* sysv_factory(); XBT_PRIVATE ContextFactory* raw_factory(); XBT_PRIVATE ContextFactory* boost_factory(); -}}} - -typedef simgrid::kernel::context::ContextFactory *smx_context_factory_t; - -XBT_PRIVATE void SIMIX_context_mod_init(); -XBT_PRIVATE void SIMIX_context_mod_exit(); - -XBT_PUBLIC smx_context_t SIMIX_context_new(std::function code, void_pfn_smxprocess_t cleanup_func, - smx_actor_t simix_process); - -#ifndef WIN32 -XBT_PUBLIC_DATA char sigsegv_stack[SIGSTKSZ]; -#endif - -/* We are using the bottom of the stack to save some information, like the - * valgrind_stack_id. Define smx_context_usable_stack_size to give the remaining - * size for the stack. Round its value to a multiple of 16 (asan wants the stacks to be aligned this way). */ -#if HAVE_VALGRIND_H -#define smx_context_usable_stack_size \ - ((smx_context_stack_size - sizeof(unsigned int)) & ~0xf) /* for valgrind_stack_id */ -#else -#define smx_context_usable_stack_size (smx_context_stack_size & ~0xf) -#endif - -/** @brief Executes all the processes to run (in parallel if possible). */ -XBT_PRIVATE void SIMIX_context_runall(); - -XBT_PRIVATE void *SIMIX_context_stack_new(); -XBT_PRIVATE void SIMIX_context_stack_delete(void *stack); - -XBT_PUBLIC int SIMIX_process_get_maxpid(); - -XBT_PRIVATE void SIMIX_post_create_environment(); - -XBT_PRIVATE simgrid::simix::ActorCodeFactory& SIMIX_get_actor_code_factory(std::string name); +} // namespace simgrid::kernel::context #endif