-/* Copyright (c) 2007-2019. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2007-2023. 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. */
#ifndef SIMGRID_KERNEL_CONTEXT_CONTEXT_HPP
#define SIMGRID_KERNEL_CONTEXT_CONTEXT_HPP
-#include "simgrid/forward.h"
+#include <simgrid/forward.h>
+#include <xbt/parmap.h>
+
#include "src/kernel/activity/ActivityImpl.hpp"
#include <csignal>
#include <functional>
-namespace simgrid {
-namespace kernel {
-namespace context {
+namespace simgrid::kernel::context {
class XBT_PUBLIC ContextFactory {
public:
- explicit ContextFactory() {}
+ explicit ContextFactory() = default;
ContextFactory(const ContextFactory&) = delete;
ContextFactory& operator=(const ContextFactory&) = delete;
virtual ~ContextFactory();
/** Turn the current thread into maestro (the old maestro becomes a regular actor) */
virtual Context* create_maestro(std::function<void()>&& code, actor::ActorImpl* actor);
- virtual void run_all() = 0;
+ virtual void run_all(std::vector<actor::ActorImpl*> const& actors_list) = 0;
protected:
template <class T, class... Args> T* new_context(Args&&... args)
{
- T* context = new T(std::forward<Args>(args)...);
- context->declare_context(sizeof(T));
+ auto* context = new T(std::forward<Args>(args)...);
return context;
}
};
class XBT_PUBLIC Context {
friend ContextFactory;
+ static int parallel_contexts;
+ static thread_local Context* current_context_;
+
std::function<void()> code_;
actor::ActorImpl* actor_ = nullptr;
- void declare_context(std::size_t size);
+ bool is_maestro_;
public:
- bool iwannadie = false;
+ static e_xbt_parmap_mode_t parallel_mode;
+ static unsigned stack_size;
+ static unsigned guard_size;
- Context(std::function<void()>&& code, actor::ActorImpl* actor);
+ static int install_sigsegv_stack(bool enable);
+
+ Context(std::function<void()>&& code, actor::ActorImpl* actor, bool maestro);
Context(const Context&) = delete;
Context& operator=(const Context&) = delete;
virtual ~Context();
- void operator()() { code_(); }
+ bool is_maestro() const { return is_maestro_; }
+ void operator()() const { code_(); }
bool has_code() const { return static_cast<bool>(code_); }
- actor::ActorImpl* get_actor() { return this->actor_; }
+ actor::ActorImpl* get_actor() const { return this->actor_; }
+
+ /** @brief Returns whether some parallel threads are used for the user contexts. */
+ static bool is_parallel() { return parallel_contexts > 1; }
+ /** @brief Returns the number of parallel threads used for the user contexts (1 means no parallelism). */
+ static int get_nthreads() { return parallel_contexts; }
+ /**
+ * @brief Sets the number of parallel threads to use for the user contexts.
+ *
+ * This function should be called before initializing SIMIX.
+ * A value of 1 means no parallelism (1 thread only).
+ * If the value is greater than 1, the thread support must be enabled.
+ * If the value is less than 1, the optimal number of threads is chosen automatically.
+ *
+ * @param nb_threads the number of threads to use
+ */
+ static void set_nthreads(int nb_threads);
// Scheduling methods
virtual void stop();
class XBT_PUBLIC AttachContext : public Context {
public:
- AttachContext(std::function<void()>&& code, actor::ActorImpl* actor) : Context(std::move(code), actor) {}
+ AttachContext(std::function<void()>&& code, actor::ActorImpl* actor, bool maestro)
+ : Context(std::move(code), actor, maestro)
+ {
+ }
AttachContext(const AttachContext&) = delete;
AttachContext& operator=(const AttachContext&) = delete;
~AttachContext() override;
- /** Called by the context when it is ready to give control
- * to the maestro.
- */
+ /** Called by the context when it is ready to give control to the maestro */
virtual void attach_start() = 0;
/** Called by the context when it has finished its job */
virtual void attach_stop() = 0;
};
-
-/* This allows Java to hijack the context factory (Java induces factories of factory :) */
-typedef ContextFactory* (*ContextFactoryInitializer)();
-XBT_PUBLIC_DATA ContextFactoryInitializer factory_initializer;
-
XBT_PRIVATE ContextFactory* thread_factory();
XBT_PRIVATE ContextFactory* sysv_factory();
XBT_PRIVATE ContextFactory* raw_factory();
XBT_PRIVATE ContextFactory* boost_factory();
-} // namespace context
-} // namespace kernel
-} // namespace simgrid
-
-typedef simgrid::kernel::context::ContextFactory *smx_context_factory_t;
-
-XBT_PRIVATE void SIMIX_context_mod_init();
-XBT_PRIVATE void SIMIX_context_mod_exit();
-
-#ifndef WIN32
-XBT_PUBLIC_DATA unsigned char sigsegv_stack[SIGSTKSZ];
-#endif
-
-XBT_PRIVATE simgrid::simix::ActorCodeFactory& SIMIX_get_actor_code_factory(const std::string& name);
+} // namespace simgrid::kernel::context
#endif
