1 /* Copyright (c) 2006-2019. 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/msg/msg_private.hpp"
9 #include "simgrid/s4u/Comm.hpp"
10 #include "simgrid/s4u/Mailbox.hpp"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_comm, s4u_activity, "S4U asynchronous communications");
16 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Comm::on_sender_start;
17 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Comm::on_receiver_start;
18 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Comm::on_completion;
22 if (state_ == State::STARTED && not detached_ && (pimpl_ == nullptr || pimpl_->state_ == SIMIX_RUNNING)) {
23 XBT_INFO("Comm %p freed before its completion. Detached: %d, State: %d", this, detached_, (int)state_);
24 if (pimpl_ != nullptr)
25 XBT_INFO("pimpl_->state: %d", pimpl_->state_);
27 XBT_INFO("pimpl_ is null");
28 xbt_backtrace_display_current();
32 int Comm::wait_any_for(std::vector<CommPtr>* comms, double timeout)
34 smx_activity_t* array = new smx_activity_t[comms->size()];
35 for (unsigned int i = 0; i < comms->size(); i++) {
36 array[i] = comms->at(i)->pimpl_;
38 int idx = simcall_comm_waitany(array, comms->size(), timeout);
43 void Comm::wait_all(std::vector<CommPtr>* comms)
45 // TODO: this should be a simcall or something
46 // TODO: we are missing a version with timeout
47 for (CommPtr comm : *comms)
51 Comm* Comm::set_rate(double rate)
53 xbt_assert(state_ == State::INITED, "You cannot use %s() once your communication started (not implemented)",
59 Comm* Comm::set_src_data(void* buff)
61 xbt_assert(state_ == State::INITED, "You cannot use %s() once your communication started (not implemented)",
63 xbt_assert(dst_buff_ == nullptr, "Cannot set the src and dst buffers at the same time");
67 Comm* Comm::set_src_data_size(size_t size)
69 xbt_assert(state_ == State::INITED, "You cannot use %s() once your communication started (not implemented)",
71 src_buff_size_ = size;
74 Comm* Comm::set_src_data(void* buff, size_t size)
76 xbt_assert(state_ == State::INITED, "You cannot use %s() once your communication started (not implemented)",
79 xbt_assert(dst_buff_ == nullptr, "Cannot set the src and dst buffers at the same time");
81 src_buff_size_ = size;
84 Comm* Comm::set_dst_data(void** buff)
86 xbt_assert(state_ == State::INITED, "You cannot use %s() once your communication started (not implemented)",
88 xbt_assert(src_buff_ == nullptr, "Cannot set the src and dst buffers at the same time");
92 size_t Comm::get_dst_data_size()
94 xbt_assert(state_ == State::FINISHED, "You cannot use %s before your communication terminated", __FUNCTION__);
95 return dst_buff_size_;
97 Comm* Comm::set_dst_data(void** buff, size_t size)
99 xbt_assert(state_ == State::INITED, "You cannot use %s() once your communication started (not implemented)",
102 xbt_assert(src_buff_ == nullptr, "Cannot set the src and dst buffers at the same time");
104 dst_buff_size_ = size;
110 xbt_assert(state_ == State::INITED, "You cannot use %s() once your communication started (not implemented)",
113 if (src_buff_ != nullptr) { // Sender side
114 on_sender_start(Actor::self());
115 pimpl_ = simcall_comm_isend(sender_, mailbox_->get_impl(), remains_, rate_, src_buff_, src_buff_size_, match_fun_,
116 clean_fun_, copy_data_function_, user_data_, detached_);
117 } else if (dst_buff_ != nullptr) { // Receiver side
118 xbt_assert(not detached_, "Receive cannot be detached");
119 on_receiver_start(Actor::self());
120 pimpl_ = simcall_comm_irecv(receiver_, mailbox_->get_impl(), dst_buff_, &dst_buff_size_, match_fun_,
121 copy_data_function_, user_data_, rate_);
124 xbt_die("Cannot start a communication before specifying whether we are the sender or the receiver");
126 state_ = State::STARTED;
130 /** @brief Block the calling actor until the communication is finished */
133 return this->wait_for(-1);
136 /** @brief Block the calling actor until the communication is finished, or until timeout
138 * On timeout, an exception is thrown.
140 * @param timeout the amount of seconds to wait for the comm termination.
141 * Negative values denote infinite wait times. 0 as a timeout returns immediately. */
142 Comm* Comm::wait_for(double timeout)
145 case State::FINISHED:
148 case State::INITED: // It's not started yet. Do it in one simcall
149 if (src_buff_ != nullptr) {
150 on_sender_start(Actor::self());
151 simcall_comm_send(sender_, mailbox_->get_impl(), remains_, rate_, src_buff_, src_buff_size_, match_fun_,
152 copy_data_function_, user_data_, timeout);
155 on_receiver_start(Actor::self());
156 simcall_comm_recv(receiver_, mailbox_->get_impl(), dst_buff_, &dst_buff_size_, match_fun_, copy_data_function_,
157 user_data_, timeout, rate_);
159 state_ = State::FINISHED;
163 simcall_comm_wait(pimpl_, timeout);
164 on_completion(Actor::self());
165 state_ = State::FINISHED;
173 int Comm::test_any(std::vector<CommPtr>* comms)
175 smx_activity_t* array = new smx_activity_t[comms->size()];
176 for (unsigned int i = 0; i < comms->size(); i++) {
177 array[i] = comms->at(i)->pimpl_;
179 int res = simcall_comm_testany(array, comms->size());
186 xbt_assert(state_ == State::INITED, "You cannot use %s() once your communication started (not implemented)",
188 xbt_assert(src_buff_ != nullptr && src_buff_size_ != 0, "You can only detach sends, not recvs");
195 simgrid::simix::simcall([this] { static_cast<kernel::activity::CommImpl*>(pimpl_.get())->cancel(); });
196 state_ = State::CANCELED;
202 xbt_assert(state_ == State::INITED || state_ == State::STARTED || state_ == State::FINISHED);
204 if (state_ == State::FINISHED)
207 if (state_ == State::INITED)
210 if (simcall_comm_test(pimpl_)) {
211 state_ = State::FINISHED;
217 MailboxPtr Comm::get_mailbox()
222 void intrusive_ptr_release(simgrid::s4u::Comm* c)
224 if (c->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
225 std::atomic_thread_fence(std::memory_order_acquire);
229 void intrusive_ptr_add_ref(simgrid::s4u::Comm* c)
231 c->refcount_.fetch_add(1, std::memory_order_relaxed);
234 } // namespace simgrid