1 /* Copyright (c) 2009-2018. 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_UNIX_CONTEXT_HPP
7 #define SIMGRID_SIMIX_UNIX_CONTEXT_HPP
9 #include <ucontext.h> /* context relative declarations */
16 #include <simgrid/simix.hpp>
17 #include <xbt/parmap.hpp>
18 #include <xbt/xbt_os_thread.h>
20 #include "src/internal_config.h"
21 #include "src/kernel/context/ContextSwapped.hpp"
27 class UContext : public SwappedContext {
29 UContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process);
33 void swap_into(SwappedContext* to) override;
36 void* stack_ = nullptr; /* the thread stack */
37 ucontext_t uc_; /* the ucontext that executes the code */
39 #if HAVE_SANITIZER_ADDRESS_FIBER_SUPPORT
40 const void* asan_stack_ = nullptr;
41 size_t asan_stack_size_ = 0;
42 UContext* asan_ctx_ = nullptr;
43 bool asan_stop_ = false;
46 static void smx_ctx_sysv_wrapper(int, int);
47 static void make_ctx(ucontext_t* ucp, void (*func)(int, int), UContext* arg);
50 class ParallelUContext : public UContext {
52 ParallelUContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process)
53 : UContext(std::move(code), cleanup_func, process)
56 void suspend() override;
57 void resume() override;
59 static void initialize();
60 static void finalize();
61 static void run_all();
64 static simgrid::xbt::Parmap<smx_actor_t>* parmap_;
65 static std::vector<ParallelUContext*> workers_context_;
66 static std::atomic<uintptr_t> threads_working_;
67 static thread_local uintptr_t worker_id_;
70 class UContextFactory : public ContextFactory {
73 ~UContextFactory() override;
74 Context* create_context(std::function<void()> code, void_pfn_smxprocess_t cleanup, smx_actor_t process) override;
75 void run_all() override;