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 #ifndef SIMGRID_KERNEL_ACTIVITY_COMM_HPP
7 #define SIMGRID_KERNEL_ACTIVITY_COMM_HPP
9 #include "src/kernel/activity/ActivityImpl.hpp"
10 #include "src/kernel/actor/ActorImpl.hpp"
11 #include "surf/surf.hpp"
18 class XBT_PUBLIC CommImpl : public ActivityImpl_T<CommImpl> {
22 static void (*copy_data_callback_)(CommImpl*, void*, size_t);
26 bool detached_ = false; /* If detached or not */
27 bool copied_ = false; /* whether the data were already copied */
28 MailboxImpl* mbox_ = nullptr; /* Rendez-vous where the comm is queued */
29 s4u::Host* from_ = nullptr; /* Pre-determined only for direct host-to-host communications */
30 s4u::Host* to_ = nullptr; /* Otherwise, computed at start() time from the actors */
33 enum class Type { SEND, RECEIVE };
35 static void set_copy_data_callback(void (*callback)(CommImpl*, void*, size_t));
37 explicit CommImpl(Type type) : type_(type) {}
38 CommImpl(s4u::Host* from, s4u::Host* to, double bytes);
40 CommImpl& set_size(double size);
41 CommImpl& set_src_buff(unsigned char* buff, size_t size);
42 CommImpl& set_dst_buff(unsigned char* buff, size_t* size);
43 CommImpl& set_rate(double rate);
44 CommImpl& set_mailbox(MailboxImpl* mbox);
47 double get_rate() const { return rate_; }
48 MailboxImpl* get_mailbox() const { return mbox_; }
49 bool detached() const { return detached_; }
54 void wait_for(actor::ActorImpl* issuer, double timeout) override;
55 static ssize_t test_any(const actor::ActorImpl* issuer, const std::vector<CommImpl*>& comms);
56 static void wait_any_for(actor::ActorImpl* issuer, const std::vector<CommImpl*>& comms, double timeout);
59 void suspend() override;
60 void resume() override;
61 void cancel() override;
63 void finish() override;
65 const Type type_ = Type::SEND; /* Type of the communication (SEND or RECEIVE) */
68 MailboxImpl* mbox_cpy = nullptr; /* Copy of the rendez-vous where the comm is queued, MC needs it for DPOR
69 (comm.mbox set to nullptr when the communication is removed from the mailbox
70 (used as garbage collector)) */
73 void (*clean_fun)(void*) = nullptr; /* Function to clean the detached src_buf if something goes wrong */
74 bool (*match_fun)(void*, void*, CommImpl*) = nullptr; /* Filter function used by the other side. It is used when
75 looking if a given communication matches my needs. For that, myself must match the
76 expectations of the other side, too. See */
77 void (*copy_data_fun)(CommImpl*, void*, size_t) = nullptr;
79 /* Surf action data */
80 resource::Action* src_timeout_ = nullptr; /* Surf's actions to instrument the timeouts */
81 resource::Action* dst_timeout_ = nullptr; /* Surf's actions to instrument the timeouts */
82 actor::ActorImplPtr src_actor_ = nullptr;
83 actor::ActorImplPtr dst_actor_ = nullptr;
85 /* Data to be transferred */
86 unsigned char* src_buff_ = nullptr;
87 unsigned char* dst_buff_ = nullptr;
88 size_t src_buff_size_ = 0;
89 size_t* dst_buff_size_ = nullptr;
91 void* src_data_ = nullptr; /* User data associated to the communication */
92 void* dst_data_ = nullptr;
94 } // namespace activity
96 } // namespace simgrid