1 /* Copyright (c) 2009-2020. 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_SWAPPED_CONTEXT_HPP
7 #define SIMGRID_KERNEL_CONTEXT_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() = default;
22 SwappedContextFactory(const SwappedContextFactory&) = delete;
23 SwappedContextFactory& operator=(const SwappedContextFactory&) = delete;
24 void run_all() override;
27 /* For the sequential execution */
28 unsigned long process_index_ = 0; // next actor to execute
29 SwappedContext* maestro_context_ = nullptr; // save maestro's context
31 /* For the parallel execution, will be created lazily with the right parameters if needed (ie, in parallel) */
32 std::unique_ptr<simgrid::xbt::Parmap<smx_actor_t>> parmap_{nullptr};
35 class SwappedContext : public Context {
37 SwappedContext(std::function<void()>&& code, smx_actor_t get_actor, SwappedContextFactory* factory);
38 SwappedContext(const SwappedContext&) = delete;
39 SwappedContext& operator=(const SwappedContext&) = delete;
40 virtual ~SwappedContext();
42 void suspend() override;
43 virtual void resume();
46 virtual void swap_into(SwappedContext* to) = 0; // Defined in Raw, Boost and UContext subclasses
48 unsigned char* get_stack();
50 static thread_local SwappedContext* worker_context_;
52 #if HAVE_SANITIZER_ADDRESS_FIBER_SUPPORT
53 const void* asan_stack_ = nullptr;
54 size_t asan_stack_size_ = 0;
55 SwappedContext* asan_ctx_ = nullptr;
56 bool asan_stop_ = false;
60 unsigned char* stack_ = nullptr; /* the thread stack */
61 SwappedContextFactory* const factory_; // for sequential and parallel run_all()
64 unsigned int valgrind_stack_id_;
68 } // namespace context
70 } // namespace simgrid