#define SIMGRID_S4U_ACTOR_HPP
#include <atomic>
+#include <chrono>
#include <functional>
-#include <future>
#include <memory>
#include <stdexcept>
+#include <string>
#include <type_traits>
+#include <utility>
+#include <vector>
+
+#include <boost/intrusive_ptr.hpp>
#include <xbt/base.h>
#include <xbt/functional.hpp>
+#include <simgrid/chrono.hpp>
#include <simgrid/simix.h>
#include <simgrid/s4u/forward.hpp>
/** @brief Simulation Agent (see \ref s4u_actor)*/
XBT_PUBLIC_CLASS Actor {
-private:
- /** Wrap a (possibly non-copyable) single-use task into a `std::function` */
- template<class F, class... Args>
- class Task {
- public:
- Task(F&& code, Args&&... args) :
- code_(std::forward<F>(code)),
- args_(std::forward<Args>(args)...)
- {}
- void operator()()
- {
- if (done_.test_and_set())
- throw std::logic_error("Actor task already executed");
- simgrid::xbt::apply(std::move(code_), std::move(args_));
- }
- private:
- std::atomic_flag done_ = ATOMIC_FLAG_INIT;
- F code_;
- std::tuple<Args...> args_;
- };
+ friend Mailbox;
+ friend simgrid::simix::Process;
+ smx_process_t pimpl_ = nullptr;
+
/** Wrap a (possibly non-copyable) single-use task into a `std::function` */
template<class F, class... Args>
static std::function<void()> wrap_task(F f, Args... args)
{
- std::shared_ptr<Task<F, Args...>> task(
- new Task<F, Args...>(std::move(f), std::move(args)...));
+ typedef decltype(f(std::move(args)...)) R;
+ auto task = std::make_shared<simgrid::xbt::Task<R()>>(
+ simgrid::xbt::makeTask(std::move(f), std::move(args)...));
return [=] {
(*task)();
};
}
+
+ Actor(smx_process_t pimpl) : pimpl_(pimpl) {}
+
public:
- Actor() : pimpl_(nullptr) {}
- Actor(smx_process_t smx_proc) :
- pimpl_(SIMIX_process_ref(smx_proc)) {}
- ~Actor()
- {
- SIMIX_process_unref(pimpl_);
- }
- // Copy+move (with the copy-and-swap idiom):
- Actor(Actor const& actor) : pimpl_(SIMIX_process_ref(actor.pimpl_)) {}
- friend void swap(Actor& first, Actor& second)
- {
- using std::swap;
- swap(first.pimpl_, second.pimpl_);
- }
- Actor& operator=(Actor actor)
+ // ***** No copy *****
+
+ Actor(Actor const&) = delete;
+ Actor& operator=(Actor const&) = delete;
+
+ // ***** Reference count (delegated to pimpl_) *****
+
+ friend void intrusive_ptr_add_ref(Actor* actor)
{
- swap(*this, actor);
- return *this;
+ xbt_assert(actor != nullptr);
+ SIMIX_process_ref(actor->pimpl_);
}
- Actor(Actor&& actor) : pimpl_(nullptr)
+ friend void intrusive_ptr_release(Actor* actor)
{
- swap(*this, actor);
+ xbt_assert(actor != nullptr);
+ SIMIX_process_unref(actor->pimpl_);
}
+ using Ptr = boost::intrusive_ptr<Actor>;
+
+ // ***** Actor creation *****
/** Create an actor using a function
*
* If the actor is restarted, the actor has a fresh copy of the function.
*/
- Actor(const char* name, s4u::Host *host, double killTime, std::function<void()> code);
+ static Ptr createActor(const char* name, s4u::Host *host, double killTime, std::function<void()> code);
- Actor(const char* name, s4u::Host *host, std::function<void()> code)
- : Actor(name, host, -1.0d, std::move(code)) {};
+ static Ptr createActor(const char* name, s4u::Host *host, std::function<void()> code)
+ {
+ return createActor(name, host, -1.0, std::move(code));
+ }
/** Create an actor using code
*
// This constructor is enabled only if the call code(args...) is valid:
typename = typename std::result_of<F(Args...)>::type
>
- Actor(const char* name, s4u::Host *host, F code, Args... args) :
- Actor(name, host, wrap_task(std::move(code), std::move(args)...))
- {}
+ static Ptr createActor(const char* name, s4u::Host *host, F code, Args... args)
+ {
+ return createActor(name, host, wrap_task(std::move(code), std::move(args)...));
+ }
+
+ // Create actor from function name:
+
+ static Ptr createActor(const char* name, s4u::Host *host, double killTime,
+ const char* function, std::vector<std::string> args);
+
+ static Ptr createActor(const char* name, s4u::Host *host, const char* function,
+ std::vector<std::string> args)
+ {
+ return createActor(name, host, -1.0, function, std::move(args));
+ }
+
+ // ***** Methods *****
/** Retrieves the actor that have the given PID (or NULL if not existing) */
//static Actor *byPid(int pid); not implemented
void kill();
static void kill(int pid);
+ static Ptr forPid(int pid);
/**
* Wait for the actor to finish.
/** Ask kindly to all actors to die. Only the issuer will survive. */
static void killAll();
-private:
- smx_process_t pimpl_ = nullptr;
+ /** Returns the internal implementation of this actor */
+ smx_process_t getImpl();
};
+using ActorPtr = Actor::Ptr;
+
/** @ingroup s4u_api
* @brief Static methods working on the current actor (see @ref s4u::Actor) */
namespace this_actor {
/** Block the actor sleeping for that amount of seconds (may throws hostFailure) */
- XBT_PUBLIC(void) sleep(double duration);
+ XBT_PUBLIC(void) sleep_for(double duration);
+ XBT_PUBLIC(void) sleep_until(double timeout);
+
+ template<class Rep, class Period>
+ inline void sleep_for(std::chrono::duration<Rep, Period> duration)
+ {
+ auto seconds = std::chrono::duration_cast<SimulationClockDuration>(duration);
+ this_actor::sleep_for(seconds.count());
+ }
+ template<class Duration>
+ inline void sleep_until(const SimulationTimePoint<Duration>& timeout_time)
+ {
+ auto timeout_native = std::chrono::time_point_cast<SimulationClockDuration>(timeout_time);
+ this_actor::sleep_until(timeout_native.time_since_epoch().count());
+ }
+
+ XBT_ATTRIB_DEPRECATED("Use sleep_for()")
+ inline void sleep(double duration)
+ {
+ return sleep_for(duration);
+ }
/** Block the actor, computing the given amount of flops */
XBT_PUBLIC(e_smx_state_t) execute(double flop);
* See \ref Comm for the full communication API (including non blocking communications).
*/
XBT_PUBLIC(void) send(Mailbox &chan, void*payload, size_t simulatedSize);
+
+ /**
+ * Return the PID of the current actor.
+ */
+ XBT_PUBLIC(int) getPid();
};
