1 /* Copyright (c) 2007-2021. 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 #include "src/kernel/activity/ActivityImpl.hpp"
7 #include "simgrid/modelchecker.h"
8 #include "src/mc/mc_replay.hpp"
9 #include "src/simix/smx_private.hpp"
10 #include <cmath> // isfinite()
12 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_process);
18 ActivityImpl::~ActivityImpl()
21 XBT_DEBUG("Destroy activity %p", this);
24 void ActivityImpl::register_simcall(smx_simcall_t simcall)
26 simcalls_.push_back(simcall);
27 simcall->issuer_->waiting_synchro_ = this;
30 void ActivityImpl::clean_action()
33 surf_action_->unref();
34 surf_action_ = nullptr;
38 double ActivityImpl::get_remaining() const
40 return surf_action_ ? surf_action_->get_remains() : 0;
43 const char* ActivityImpl::get_state_str() const
45 return to_c_str(state_);
48 bool ActivityImpl::test()
50 if (state_ != State::WAITING && state_ != State::RUNNING) {
57 void ActivityImpl::wait_for(actor::ActorImpl* issuer, double timeout)
59 XBT_DEBUG("Wait for execution of synchro %p, state %d", this, (int)state_);
60 xbt_assert(std::isfinite(timeout), "timeout is not finite!");
62 /* Associate this simcall to the synchro */
63 register_simcall(&issuer->simcall_);
65 if (MC_is_active() || MC_record_replay_is_active()) {
66 int idx = issuer->simcall_.mc_value_;
68 state_ = simgrid::kernel::activity::State::DONE;
70 /* If we reached this point, the wait simcall must have a timeout */
71 /* Otherwise it shouldn't be enabled and executed by the MC */
74 state_ = simgrid::kernel::activity::State::TIMEOUT;
80 /* If the synchro is already finished then perform the error handling */
81 if (state_ != simgrid::kernel::activity::State::RUNNING)
83 else if (timeout == 0.) {
84 // still running and timeout == 0 ? We need to report a timeout
85 state_ = simgrid::kernel::activity::State::TIMEOUT;
88 /* we need a sleep action (even when the timeout is infinite) to be notified of host failures */
93 void ActivityImpl::suspend()
95 if (surf_action_ == nullptr)
97 XBT_VERB("This activity is suspended (remain: %f)", surf_action_->get_remains());
98 surf_action_->suspend();
102 void ActivityImpl::resume()
104 if (surf_action_ == nullptr)
106 XBT_VERB("This activity is resumed (remain: %f)", surf_action_->get_remains());
107 surf_action_->resume();
111 void ActivityImpl::cancel()
113 XBT_VERB("Activity %p is canceled", this);
114 if (surf_action_ != nullptr)
115 surf_action_->cancel();
116 state_ = State::CANCELED;
119 // boost::intrusive_ptr<Activity> support:
120 void intrusive_ptr_add_ref(simgrid::kernel::activity::ActivityImpl* activity)
122 activity->refcount_.fetch_add(1, std::memory_order_relaxed);
125 void intrusive_ptr_release(simgrid::kernel::activity::ActivityImpl* activity)
127 if (activity->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
128 std::atomic_thread_fence(std::memory_order_acquire);
132 xbt::signal<void(ActivityImpl const&)> ActivityImpl::on_resumed;
133 xbt::signal<void(ActivityImpl const&)> ActivityImpl::on_suspended;
136 } // namespace simgrid::kernel::activity::