1 /* Copyright (c) 2007-2017. 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
12 #include <unordered_map>
15 #include <xbt/functional.hpp>
17 #include "simgrid/simix.h"
18 #include "src/instr/instr_private.h"
19 #include "src/internal_config.h"
20 #include "src/simix/popping_private.h"
21 #include "src/simix/smx_host_private.h"
22 #include "src/simix/smx_io_private.h"
23 #include "src/simix/smx_network_private.h"
24 #include "src/simix/smx_synchro_private.hpp"
25 #include "surf/surf.h"
27 #include "xbt/config.h"
28 #include "xbt/function_types.h"
29 #include "xbt/mallocator.h"
30 #include "xbt/xbt_os_time.h"
32 #include "src/simix/ActorImpl.hpp"
35 #include <simgrid/simix.hpp>
41 XBT_PUBLIC_CLASS ContextFactory {
46 explicit ContextFactory(std::string name) : name_(std::move(name)) {}
47 virtual ~ContextFactory();
48 virtual Context* create_context(std::function<void()> code,
49 void_pfn_smxprocess_t cleanup, smx_actor_t process) = 0;
51 // Optional methods for attaching main() as a context:
53 /** Creates a context from the current context of execution
55 * This will not work on all implementation of `ContextFactory`.
57 virtual Context* attach(void_pfn_smxprocess_t cleanup_func, smx_actor_t process);
58 virtual Context* create_maestro(std::function<void()> code, smx_actor_t process);
60 virtual void run_all() = 0;
61 virtual Context* self();
62 std::string const& name() const
67 void declare_context(void* T, std::size_t size);
69 template<class T, class... Args>
70 T* new_context(Args&&... args)
72 T* context = new T(std::forward<Args>(args)...);
73 this->declare_context(context, sizeof(T));
78 XBT_PUBLIC_CLASS Context {
80 std::function<void()> code_;
81 void_pfn_smxprocess_t cleanup_func_ = nullptr;
82 smx_actor_t process_ = nullptr;
84 class StopRequest : public std::exception {
88 Context(std::function<void()> code,
89 void_pfn_smxprocess_t cleanup_func,
97 return static_cast<bool>(code_);
101 return this->process_;
103 void set_cleanup(void_pfn_smxprocess_t cleanup)
105 cleanup_func_ = cleanup;
111 virtual void suspend() = 0;
114 XBT_PUBLIC_CLASS AttachContext : public Context {
117 AttachContext(std::function<void()> code,
118 void_pfn_smxprocess_t cleanup_func,
120 : Context(std::move(code), cleanup_func, process)
123 ~AttachContext() override;
125 /** Called by the context when it is ready to give control
128 virtual void attach_start() = 0;
130 /** Called by the context when it has finished its job */
131 virtual void attach_stop() = 0;
134 /* This allows Java to hijack the context factory (Java induces factories of factory :) */
135 typedef ContextFactory* (*ContextFactoryInitializer)();
136 XBT_PUBLIC_DATA(ContextFactoryInitializer) factory_initializer;
138 XBT_PRIVATE ContextFactory* thread_factory();
139 XBT_PRIVATE ContextFactory* sysv_factory();
140 XBT_PRIVATE ContextFactory* raw_factory();
141 XBT_PRIVATE ContextFactory* boost_factory();
145 typedef simgrid::kernel::context::ContextFactory *smx_context_factory_t;
150 XBT_PRIVATE void SIMIX_context_mod_init();
151 XBT_PRIVATE void SIMIX_context_mod_exit();
153 XBT_PUBLIC(smx_context_t)
154 SIMIX_context_new(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t simix_process);
157 XBT_PUBLIC_DATA(char sigsegv_stack[SIGSTKSZ]);
160 /* We are using the bottom of the stack to save some information, like the
161 * valgrind_stack_id. Define smx_context_usable_stack_size to give the remaining
162 * size for the stack. Round its value to a multiple of 16 (for stack alignment). */
164 #define smx_context_usable_stack_size \
165 ((smx_context_stack_size - sizeof(unsigned int)) & ~0xf) /* for valgrind_stack_id */
167 #define smx_context_usable_stack_size (smx_context_stack_size & ~0xf)
170 /** @brief Executes all the processes to run (in parallel if possible). */
171 XBT_PRIVATE void SIMIX_context_runall();
172 /** @brief returns the current running context */
173 XBT_PUBLIC(smx_context_t) SIMIX_context_self(); // public because it's used in simgrid-java
175 XBT_PRIVATE void *SIMIX_context_stack_new();
176 XBT_PRIVATE void SIMIX_context_stack_delete(void *stack);
178 XBT_PUBLIC(void) SIMIX_context_set_current(smx_context_t context);
179 XBT_PRIVATE smx_context_t SIMIX_context_get_current();
181 XBT_PUBLIC(int) SIMIX_process_get_maxpid();
183 XBT_PRIVATE void SIMIX_post_create_environment();
187 XBT_PRIVATE simgrid::simix::ActorCodeFactory& SIMIX_get_actor_code_factory(const char *name);