1 /* Copyright (c) 2015-2017. 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_SIMIX_BOOST_CONTEXT_HPP
7 #define SIMGRID_SIMIX_BOOST_CONTEXT_HPP
9 #include <boost/version.hpp>
10 #if BOOST_VERSION < 106100
11 #include <boost/context/fcontext.hpp>
13 #include <boost/context/detail/fcontext.hpp>
21 #include <simgrid/simix.hpp>
22 #include <xbt/parmap.hpp>
23 #include <xbt/xbt_os_thread.h>
25 #include "Context.hpp"
26 #include "src/internal_config.h"
27 #include "src/simix/smx_private.hpp"
33 /** @brief Userspace context switching implementation based on Boost.Context */
34 class BoostContext : public Context {
36 BoostContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process);
37 ~BoostContext() override;
39 virtual void resume() = 0;
41 static void swap(BoostContext* from, BoostContext* to);
42 static BoostContext* getMaestro() { return maestro_context_; }
43 static void setMaestro(BoostContext* maestro) { maestro_context_ = maestro; }
46 static BoostContext* maestro_context_;
47 void* stack_ = nullptr;
49 #if BOOST_VERSION < 105600
50 boost::context::fcontext_t* fc_ = nullptr;
51 typedef intptr_t arg_type;
52 #elif BOOST_VERSION < 106100
53 boost::context::fcontext_t fc_;
54 typedef intptr_t arg_type;
56 boost::context::detail::fcontext_t fc_;
57 typedef boost::context::detail::transfer_t arg_type;
59 #if HAVE_SANITIZE_ADDRESS_FIBER_SUPPORT
60 const void* asan_stack_ = nullptr;
61 size_t asan_stack_size_ = 0;
62 bool asan_stop_ = false;
65 static void wrapper(arg_type arg);
68 class SerialBoostContext : public BoostContext {
70 SerialBoostContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process)
71 : BoostContext(std::move(code), cleanup_func, process)
74 void suspend() override;
75 void resume() override;
77 static void run_all();
80 static unsigned long process_index_;
83 #if HAVE_THREAD_CONTEXTS
84 class ParallelBoostContext : public BoostContext {
86 ParallelBoostContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process)
87 : BoostContext(std::move(code), cleanup_func, process)
90 void suspend() override;
91 void resume() override;
93 static void initialize();
94 static void finalize();
95 static void run_all();
98 static simgrid::xbt::Parmap<smx_actor_t>* parmap_;
99 static std::vector<ParallelBoostContext*> workers_context_;
100 static std::atomic<uintptr_t> threads_working_;
101 static xbt_os_thread_key_t worker_id_key_;
105 class BoostContextFactory : public ContextFactory {
107 BoostContextFactory();
108 ~BoostContextFactory() override;
109 Context* create_context(std::function<void()> code, void_pfn_smxprocess_t cleanup, smx_actor_t process) override;
110 void run_all() override;