1 /* Copyright (c) 2009-2019. 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_SIMIX_SWAPPED_CONTEXT_HPP
7 #define SIMGRID_SIMIX_SWAPPED_CONTEXT_HPP
9 #include "src/kernel/context/Context.hpp"
18 class SwappedContextFactory : public ContextFactory {
19 friend SwappedContext; // Reads whether we are in parallel mode
21 SwappedContextFactory();
22 SwappedContextFactory(const SwappedContextFactory&) = delete;
23 SwappedContextFactory& operator=(const SwappedContextFactory&) = delete;
24 ~SwappedContextFactory() override;
25 void run_all() override;
30 unsigned long process_index_ = 0; // Next actor to execute during sequential run_all()
32 /* For the parallel execution */
33 simgrid::xbt::Parmap<smx_actor_t>* parmap_;
34 std::vector<SwappedContext*> workers_context_; /* space to save the worker's context in each thread */
35 std::atomic<uintptr_t> threads_working_{0}; /* number of threads that have started their work */
38 class SwappedContext : public Context {
40 SwappedContext(std::function<void()> code, smx_actor_t get_actor, SwappedContextFactory* factory);
41 SwappedContext(const SwappedContext&) = delete;
42 SwappedContext& operator=(const SwappedContext&) = delete;
43 virtual ~SwappedContext();
45 void suspend() override;
46 virtual void resume();
49 virtual void swap_into(SwappedContext* to) = 0; // Defined in Raw, Boost and UContext subclasses
53 static thread_local uintptr_t worker_id_;
55 #if HAVE_SANITIZER_ADDRESS_FIBER_SUPPORT
56 const void* asan_stack_ = nullptr;
57 size_t asan_stack_size_ = 0;
58 SwappedContext* asan_ctx_ = nullptr;
59 bool asan_stop_ = false;
63 void* stack_ = nullptr; /* the thread stack */
64 SwappedContextFactory* const factory_; // for sequential and parallel run_all()
67 } // namespace context
69 } // namespace simgrid