1 /* Copyright (c) 2007-2019. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #ifndef SIMGRID_KERNEL_CONTEXT_CONTEXT_HPP
7 #define SIMGRID_KERNEL_CONTEXT_CONTEXT_HPP
9 #include "simgrid/forward.h"
10 #include "src/kernel/activity/ActivityImpl.hpp"
19 class XBT_PUBLIC ContextFactory {
21 explicit ContextFactory() {}
22 ContextFactory(const ContextFactory&) = delete;
23 ContextFactory& operator=(const ContextFactory&) = delete;
24 virtual ~ContextFactory();
25 virtual Context* create_context(std::function<void()>&& code, actor::ActorImpl* actor) = 0;
27 /** Turn the current thread into a simulation context */
28 virtual Context* attach(actor::ActorImpl* actor);
29 /** Turn the current thread into maestro (the old maestro becomes a regular actor) */
30 virtual Context* create_maestro(std::function<void()>&& code, actor::ActorImpl* actor);
32 virtual void run_all() = 0;
35 template <class T, class... Args> T* new_context(Args&&... args)
37 T* context = new T(std::forward<Args>(args)...);
38 context->declare_context(sizeof(T));
43 class XBT_PUBLIC Context {
44 friend ContextFactory;
46 static thread_local Context* current_;
48 std::function<void()> code_;
49 actor::ActorImpl* actor_ = nullptr;
50 void declare_context(std::size_t size);
53 bool iwannadie = false;
55 Context(std::function<void()>&& code, actor::ActorImpl* actor);
56 Context(const Context&) = delete;
57 Context& operator=(const Context&) = delete;
60 void operator()() { code_(); }
61 bool has_code() const { return static_cast<bool>(code_); }
62 actor::ActorImpl* get_actor() { return this->actor_; }
66 virtual void suspend() = 0;
68 // Retrieving the self() context
69 /** @brief Retrives the current context of this thread */
70 static Context* self() { return current_; }
71 /** @brief Sets the current context of this thread */
72 static void set_current(Context* self) { current_ = self; }
75 class XBT_PUBLIC AttachContext : public Context {
77 AttachContext(std::function<void()>&& code, actor::ActorImpl* actor) : Context(std::move(code), actor) {}
78 AttachContext(const AttachContext&) = delete;
79 AttachContext& operator=(const AttachContext&) = delete;
80 ~AttachContext() override;
82 /** Called by the context when it is ready to give control
85 virtual void attach_start() = 0;
87 /** Called by the context when it has finished its job */
88 virtual void attach_stop() = 0;
92 /* This allows Java to hijack the context factory (Java induces factories of factory :) */
93 typedef ContextFactory* (*ContextFactoryInitializer)();
94 XBT_PUBLIC_DATA ContextFactoryInitializer factory_initializer;
96 XBT_PRIVATE ContextFactory* thread_factory();
97 XBT_PRIVATE ContextFactory* sysv_factory();
98 XBT_PRIVATE ContextFactory* raw_factory();
99 XBT_PRIVATE ContextFactory* boost_factory();
101 } // namespace context
102 } // namespace kernel
103 } // namespace simgrid
105 typedef simgrid::kernel::context::ContextFactory *smx_context_factory_t;
107 XBT_PRIVATE void SIMIX_context_mod_init();
108 XBT_PRIVATE void SIMIX_context_mod_exit();
111 XBT_PUBLIC_DATA unsigned char sigsegv_stack[SIGSTKSZ];
114 /** @brief Executes all the processes to run (in parallel if possible). */
115 XBT_PRIVATE void SIMIX_context_runall();
117 XBT_PUBLIC int SIMIX_process_get_maxpid();
119 XBT_PRIVATE simgrid::simix::ActorCodeFactory& SIMIX_get_actor_code_factory(const std::string& name);