+++ /dev/null
-/* Copyright (c) 2007-2019. 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 SIMIX_ACTORIMPL_H
-#define SIMIX_ACTORIMPL_H
-
-#include "simgrid/s4u/Actor.hpp"
-#include "src/simix/popping_private.hpp"
-#include "src/surf/PropertyHolder.hpp"
-#include <boost/intrusive/list.hpp>
-#include <functional>
-#include <list>
-#include <map>
-#include <memory>
-
-struct s_smx_process_exit_fun_t {
- std::function<void(bool, void*)> fun;
- void *arg;
-};
-
-namespace simgrid {
-namespace kernel {
-namespace actor {
-
-class XBT_PUBLIC ActorImpl : public surf::PropertyHolder {
- s4u::Host* host_ = nullptr; /* the host on which the actor is running */
- void* userdata_ = nullptr; /* kept for compatibility, it should be replaced with moddata */
- aid_t pid_ = 0;
- aid_t ppid_ = -1;
- bool daemon_ = false; /* Daemon actors are automatically killed when the last non-daemon leaves */
- bool auto_restart_ = false;
-
-public:
- xbt::string name_;
- ActorImpl(const xbt::string& name, s4u::Host* host);
- ActorImpl(const ActorImpl&) = delete;
- ActorImpl& operator=(const ActorImpl&) = delete;
- ~ActorImpl();
-
- double get_kill_time();
- void set_kill_time(double kill_time);
- boost::intrusive::list_member_hook<> host_process_list_hook; /* simgrid::simix::Host::process_list */
- boost::intrusive::list_member_hook<> smx_destroy_list_hook; /* simix_global->actors_to_destroy */
- boost::intrusive::list_member_hook<> smx_synchro_hook; /* {mutex,cond,sem}->sleeping */
-
- const xbt::string& get_name() const { return name_; }
- const char* get_cname() const { return name_.c_str(); }
-
- // Accessors to private fields
- s4u::Host* get_host() { return host_; }
- void set_host(s4u::Host* dest);
- void* get_user_data() { return userdata_; }
- void set_user_data(void* data) { userdata_ = data; }
- aid_t get_pid() const { return pid_; }
- aid_t get_ppid() const { return ppid_; }
- void set_ppid(aid_t ppid) { ppid_ = ppid; }
- bool is_daemon() { return daemon_; } /** Whether this actor has been daemonized */
- bool has_to_auto_restart() { return auto_restart_; }
- void set_auto_restart(bool autorestart) { auto_restart_ = autorestart; }
-
- std::unique_ptr<context::Context> context_; /* the context (uctx/raw/thread) that executes the user function */
-
- std::exception_ptr exception_;
- bool finished_ = false;
- bool blocked_ = false; /* FIXME this field is never set to true. Either use it or remove it. */
- bool suspended_ = false;
-
- activity::ActivityImplPtr waiting_synchro = nullptr; /* the current blocking synchro if any */
- std::list<activity::ActivityImplPtr> comms; /* the current non-blocking communication synchros */
- s_smx_simcall simcall;
- std::vector<s_smx_process_exit_fun_t> on_exit; /* list of functions executed when the process dies */
-
- std::function<void()> code;
- simix::Timer* kill_timer = nullptr;
-
-private:
- /* Refcounting */
- std::atomic_int_fast32_t refcount_{0};
-
-public:
- friend void intrusive_ptr_add_ref(ActorImpl* actor)
- {
- // std::memory_order_relaxed ought to be enough here instead of std::memory_order_seq_cst
- // But then, we have a threading issue when an actor commits a suicide:
- // it seems that in this case, the worker thread kills the last occurrence of the actor
- // while usually, the maestro does so. FIXME: we should change how actors suicide
- actor->refcount_.fetch_add(1, std::memory_order_seq_cst);
- }
- friend void intrusive_ptr_release(ActorImpl* actor)
- {
- // inspired from http://www.boost.org/doc/libs/1_55_0/doc/html/atomic/usage_examples.html
- if (actor->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
- // Make sure that any changes done on other threads before their acquire are committed before our delete
- // http://stackoverflow.com/questions/27751025/why-is-an-acquire-barrier-needed-before-deleting-the-data-in-an-atomically-refer
- std::atomic_thread_fence(std::memory_order_acquire);
- delete actor;
- }
- }
-
- /* S4U/implem interfaces */
-private:
- s4u::Actor piface_; // Our interface is part of ourselves
-public:
- s4u::ActorPtr iface() { return s4u::ActorPtr(&piface_); }
- s4u::Actor* ciface() { return &piface_; }
-
- ActorImplPtr init(const std::string& name, s4u::Host* host);
- ActorImpl* start(const simix::ActorCode& code);
-
- static ActorImplPtr create(const std::string& name, const simix::ActorCode& code, void* data, s4u::Host* host,
- std::unordered_map<std::string, std::string>* properties, ActorImpl* parent_actor);
- static ActorImplPtr attach(const std::string& name, void* data, s4u::Host* host,
- std::unordered_map<std::string, std::string>* properties);
- static void detach();
- void cleanup();
- void exit();
- void kill(ActorImpl* actor);
- void kill_all();
-
- void yield();
- void daemonize();
- bool is_suspended() { return suspended_; }
- s4u::Actor* restart();
- activity::ActivityImplPtr suspend(ActorImpl* issuer);
- void resume();
- activity::ActivityImplPtr join(ActorImpl* actor, double timeout);
- activity::ActivityImplPtr sleep(double duration);
- /** Ask the actor to throw an exception right away */
- void throw_exception(std::exception_ptr e);
-};
-
-class ProcessArg {
-public:
- std::string name;
- std::function<void()> code;
- void* data = nullptr;
- s4u::Host* host = nullptr;
- double kill_time = 0.0;
- std::shared_ptr<std::unordered_map<std::string, std::string>> properties = nullptr;
- bool auto_restart = false;
- bool daemon_ = false;
- ProcessArg() = default;
-
- explicit ProcessArg(const std::string& name, const std::function<void()>& code, void* data, s4u::Host* host,
- double kill_time, std::shared_ptr<std::unordered_map<std::string, std::string>> properties,
- bool auto_restart)
- : name(name)
- , code(code)
- , data(data)
- , host(host)
- , kill_time(kill_time)
- , properties(properties)
- , auto_restart(auto_restart)
- {
- }
-
- explicit ProcessArg(s4u::Host* host, ActorImpl* actor)
- : name(actor->get_name())
- , code(actor->code)
- , data(actor->get_user_data())
- , host(host)
- , kill_time(actor->get_kill_time())
- , auto_restart(actor->has_to_auto_restart())
- , daemon_(actor->is_daemon())
- {
- properties.reset(actor->get_properties(), [](decltype(actor->get_properties())) {});
- }
-};
-
-/* Used to keep the list of actors blocked on a synchro */
-typedef boost::intrusive::list<ActorImpl, boost::intrusive::member_hook<ActorImpl, boost::intrusive::list_member_hook<>,
- &ActorImpl::smx_synchro_hook>>
- SynchroList;
-
-XBT_PUBLIC void create_maestro(const std::function<void()>& code);
-} // namespace actor
-} // namespace kernel
-} // namespace simgrid
-
-extern void (*SMPI_switch_data_segment)(simgrid::s4u::ActorPtr actor);
-
-XBT_PRIVATE void SIMIX_process_sleep_destroy(smx_activity_t synchro);
-
-#endif
