-/* Copyright (c) 2009-2017. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2009-2023. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
/* \file ThreadContext.hpp Context switching with native threads */
-#ifndef SIMGRID_SIMIX_THREAD_CONTEXT_HPP
-#define SIMGRID_SIMIX_THREAD_CONTEXT_HPP
+#ifndef SIMGRID_KERNEL_CONTEXT_THREAD_CONTEXT_HPP
+#define SIMGRID_KERNEL_CONTEXT_THREAD_CONTEXT_HPP
-#include <simgrid/simix.hpp>
+#include "simgrid/simix.hpp"
+#include "src/kernel/context/Context.hpp"
+#include "src/xbt/OsSemaphore.hpp"
+#include <thread>
-namespace simgrid {
-namespace kernel {
-namespace context {
+namespace simgrid::kernel::context {
-class ThreadContext : public AttachContext {
+class XBT_PUBLIC ThreadContext : public AttachContext {
public:
- ThreadContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process, bool maestro);
+ ThreadContext(std::function<void()>&& code, actor::ActorImpl* actor, bool maestro);
+ ThreadContext(const ThreadContext&) = delete;
+ ThreadContext& operator=(const ThreadContext&) = delete;
~ThreadContext() override;
- void stop() override;
void suspend() override;
void attach_start() override;
void attach_stop() override;
- bool isMaestro() const { return is_maestro_; }
void release(); // unblock context's start()
void wait(); // wait for context's yield()
private:
/** A portable thread */
- xbt_os_thread_t thread_ = nullptr;
- /** Semaphore used to schedule/yield the process */
- xbt_os_sem_t begin_ = nullptr;
- /** Semaphore used to schedule/unschedule */
- xbt_os_sem_t end_ = nullptr;
- bool is_maestro_;
+ std::thread* thread_ = nullptr;
+ /** Semaphore used to schedule/yield the actor (not needed when the maestro is in main, but harmless then) */
+ xbt::OsSemaphore begin_{0};
+ /** Semaphore used to schedule/unschedule (not needed when the maestro is in main, but harmless then) */
+ xbt::OsSemaphore end_{0};
void start(); // match a call to release()
void yield(); // match a call to yield()
- virtual void start_hook() { /* empty placeholder, called after start() */}
- virtual void yield_hook() { /* empty placeholder, called before yield() */}
+ virtual void start_hook() { /* empty placeholder, called after start(). Used in parallel mode */}
+ virtual void yield_hook() { /* empty placeholder, called before yield(). Used in parallel mode */}
- static void* wrapper(void *param);
+ static void wrapper(ThreadContext* context);
};
-class SerialThreadContext : public ThreadContext {
+class XBT_PUBLIC SerialThreadContext : public ThreadContext {
public:
- SerialThreadContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process, bool maestro)
- : ThreadContext(std::move(code), cleanup_func, process, maestro)
+ SerialThreadContext(std::function<void()>&& code, actor::ActorImpl* actor, bool maestro)
+ : ThreadContext(std::move(code), actor, maestro)
{
}
- static void run_all();
+ static void run_all(std::vector<actor::ActorImpl*> const& actors_list);
};
class ParallelThreadContext : public ThreadContext {
public:
- ParallelThreadContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process,
- bool maestro)
- : ThreadContext(std::move(code), cleanup_func, process, maestro)
+ ParallelThreadContext(std::function<void()>&& code, actor::ActorImpl* actor, bool maestro)
+ : ThreadContext(std::move(code), actor, maestro)
{
}
static void initialize();
static void finalize();
- static void run_all();
+ static void run_all(std::vector<actor::ActorImpl*> const& actors_list);
private:
- static xbt_os_sem_t thread_sem_;
+ static xbt::OsSemaphore* thread_sem_;
void start_hook() override;
void yield_hook() override;
class ThreadContextFactory : public ContextFactory {
public:
ThreadContextFactory();
+ ThreadContextFactory(const ThreadContextFactory&) = delete;
+ ThreadContextFactory& operator=(const ThreadContextFactory&) = delete;
~ThreadContextFactory() override;
- ThreadContext* create_context(std::function<void()> code, void_pfn_smxprocess_t cleanup_func,
- smx_actor_t process) override
+ ThreadContext* create_context(std::function<void()>&& code, actor::ActorImpl* actor) override
{
bool maestro = not code;
- return create_context(std::move(code), cleanup_func, process, maestro);
+ return create_context(std::move(code), actor, maestro);
}
- void run_all() override;
- ThreadContext* self() override { return static_cast<ThreadContext*>(xbt_os_thread_get_extra_data()); }
+ void run_all(std::vector<actor::ActorImpl*> const& actors) override;
// Optional methods:
- ThreadContext* attach(void_pfn_smxprocess_t cleanup_func, smx_actor_t process) override
+ ThreadContext* attach(actor::ActorImpl* actor) override
{
- return create_context(std::function<void()>(), cleanup_func, process, false);
+ return create_context(std::function<void()>(), actor, false);
}
- ThreadContext* create_maestro(std::function<void()> code, smx_actor_t process) override
+ ThreadContext* create_maestro(std::function<void()>&& code, actor::ActorImpl* actor) override
{
- return create_context(std::move(code), nullptr, process, true);
+ return create_context(std::move(code), actor, true);
}
private:
- bool parallel_;
-
- ThreadContext* create_context(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process,
- bool maestro);
+ ThreadContext* create_context(std::function<void()>&& code, actor::ActorImpl* actor, bool maestro);
};
-}}} // namespace
+} // namespace simgrid::kernel::context
#endif
