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 std::function<void()> code_;
47 actor::ActorImpl* actor_ = nullptr;
48 void declare_context(std::size_t size);
51 bool iwannadie = false;
53 Context(std::function<void()>&& code, actor::ActorImpl* actor);
54 Context(const Context&) = delete;
55 Context& operator=(const Context&) = delete;
58 void operator()() { code_(); }
59 bool has_code() const { return static_cast<bool>(code_); }
60 actor::ActorImpl* get_actor() { return this->actor_; }
64 virtual void suspend() = 0;
66 // Retrieving the self() context
67 /** @brief Retrieves the current context of this thread */
68 static Context* self();
69 /** @brief Sets the current context of this thread */
70 static void set_current(Context* self);
73 class XBT_PUBLIC AttachContext : public Context {
75 AttachContext(std::function<void()>&& code, actor::ActorImpl* actor) : Context(std::move(code), actor) {}
76 AttachContext(const AttachContext&) = delete;
77 AttachContext& operator=(const AttachContext&) = delete;
78 ~AttachContext() override;
80 /** Called by the context when it is ready to give control
83 virtual void attach_start() = 0;
85 /** Called by the context when it has finished its job */
86 virtual void attach_stop() = 0;
90 /* This allows Java to hijack the context factory (Java induces factories of factory :) */
91 typedef ContextFactory* (*ContextFactoryInitializer)();
92 XBT_PUBLIC_DATA ContextFactoryInitializer factory_initializer;
94 XBT_PRIVATE ContextFactory* thread_factory();
95 XBT_PRIVATE ContextFactory* sysv_factory();
96 XBT_PRIVATE ContextFactory* raw_factory();
97 XBT_PRIVATE ContextFactory* boost_factory();
99 } // namespace context
100 } // namespace kernel
101 } // namespace simgrid
103 typedef simgrid::kernel::context::ContextFactory *smx_context_factory_t;
105 XBT_PRIVATE void SIMIX_context_mod_init();
106 XBT_PRIVATE void SIMIX_context_mod_exit();
109 XBT_PUBLIC_DATA unsigned char sigsegv_stack[SIGSTKSZ];
112 XBT_PRIVATE simgrid::simix::ActorCodeFactory& SIMIX_get_actor_code_factory(const std::string& name);