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/MailboxImpl.hpp"
7 #include "src/kernel/activity/CommImpl.hpp"
9 #include <unordered_map>
11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_mailbox, simix, "Mailbox implementation");
13 /******************************************************************************/
14 /* Rendez-Vous Points */
15 /******************************************************************************/
21 /** @brief set the receiver of the mailbox to allow eager sends
22 * @param actor The receiving dude
24 void MailboxImpl::set_receiver(s4u::ActorPtr actor)
27 this->permanent_receiver_ = actor->get_impl();
29 this->permanent_receiver_ = nullptr;
31 /** @brief Pushes a communication activity into a mailbox
32 * @param comm What to add
34 void MailboxImpl::push(CommImplPtr comm)
36 comm->set_mailbox(this);
37 this->comm_queue_.push_back(std::move(comm));
40 /** @brief Removes a communication activity from a mailbox
41 * @param comm What to remove
43 void MailboxImpl::remove(const CommImplPtr& comm)
45 xbt_assert(comm->get_mailbox() == this, "Comm %p is in mailbox %s, not mailbox %s", comm.get(),
46 (comm->get_mailbox() ? comm->get_mailbox()->get_cname() : "(null)"), this->get_cname());
48 comm->set_mailbox(nullptr);
49 for (auto it = this->comm_queue_.begin(); it != this->comm_queue_.end(); it++)
51 this->comm_queue_.erase(it);
54 xbt_die("Comm %p not found in mailbox %s", comm.get(), this->get_cname());
57 CommImplPtr MailboxImpl::iprobe(int type, bool (*match_fun)(void*, void*, CommImpl*), void* data)
59 XBT_DEBUG("iprobe from %p %p", this, &comm_queue_);
61 CommImplPtr this_comm;
62 CommImpl::Type smx_type;
64 this_comm = CommImplPtr(new CommImpl(CommImpl::Type::SEND));
65 smx_type = CommImpl::Type::RECEIVE;
67 this_comm = CommImplPtr(new CommImpl(CommImpl::Type::RECEIVE));
68 smx_type = CommImpl::Type::SEND;
70 CommImplPtr other_comm = nullptr;
71 if (permanent_receiver_ != nullptr && not done_comm_queue_.empty()) {
72 XBT_DEBUG("first check in the permanent recv mailbox, to see if we already got something");
73 other_comm = find_matching_comm(smx_type, match_fun, data, this_comm, /*done*/ true, /*remove_matching*/ false);
76 XBT_DEBUG("check if we have more luck in the normal mailbox");
77 other_comm = find_matching_comm(smx_type, match_fun, data, this_comm, /*done*/ false, /*remove_matching*/ false);
84 * @brief Checks if there is a communication activity queued in comm_queue_ matching our needs
85 * @param type The type of communication we are looking for (comm_send, comm_recv)
86 * @param match_fun the function to apply
87 * @param this_user_data additional parameter to the match_fun
88 * @param my_synchro what to compare against
89 * @param remove_matching whether or not to clean the found object from the queue
90 * @return The communication activity if found, nullptr otherwise
92 CommImplPtr MailboxImpl::find_matching_comm(CommImpl::Type type, bool (*match_fun)(void*, void*, CommImpl*),
93 void* this_user_data, const CommImplPtr& my_synchro, bool done,
96 auto& comm_queue = done ? done_comm_queue_ : comm_queue_;
98 auto iter = std::find_if(
99 comm_queue.begin(), comm_queue.end(), [&type, &match_fun, &this_user_data, &my_synchro](const CommImplPtr& comm) {
100 void* other_user_data = (comm->type_ == CommImpl::Type::SEND ? comm->src_data_ : comm->dst_data_);
101 return (comm->type_ == type && (not match_fun || match_fun(this_user_data, other_user_data, comm.get())) &&
102 (not comm->match_fun || comm->match_fun(other_user_data, this_user_data, my_synchro.get())));
104 if (iter == comm_queue.end()) {
105 XBT_DEBUG("No matching communication synchro found");
109 const CommImplPtr& comm = *iter;
110 XBT_DEBUG("Found a matching communication synchro %p", comm.get());
112 comm->mbox_cpy = comm->get_mailbox();
114 comm->set_mailbox(nullptr);
115 CommImplPtr comm_cpy = comm;
117 comm_queue.erase(iter);
120 } // namespace activity
121 } // namespace kernel
122 } // namespace simgrid