1 /* Copyright (c) 2015-2022. 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_MC_PROTOCOL_H
7 #define SIMGRID_MC_PROTOCOL_H
9 // ***** Environment variables for passing context to the model-checked process
13 #include "src/kernel/actor/SimcallObserver.hpp"
15 #include "mc/datatypes.h"
16 #include "simgrid/forward.h" // aid_t
19 #include <xbt/dynar.h>
20 #include <xbt/mmalloc.h>
21 #include <xbt/utility.hpp>
24 namespace simgrid::mc {
26 XBT_DECLARE_ENUM_CLASS(MessageType, NONE, INITIAL_ADDRESSES, CONTINUE, IGNORE_HEAP, UNIGNORE_HEAP, IGNORE_MEMORY,
27 STACK_REGION, REGISTER_SYMBOL, DEADLOCK_CHECK, DEADLOCK_CHECK_REPLY, WAITING, SIMCALL_EXECUTE,
28 SIMCALL_EXECUTE_ANSWER, ASSERTION_FAILED, ACTORS_STATUS, ACTORS_STATUS_REPLY, FINALIZE);
29 } // namespace simgrid::mc
31 constexpr unsigned MC_MESSAGE_LENGTH = 512;
32 constexpr unsigned SIMCALL_SERIALIZATION_BUFFER_SIZE = 2048;
34 /** Basic structure for a MC message
36 * The current version of the client/server protocol sends C structures over `AF_LOCAL`
37 * `SOCK_SEQPACKET` sockets. This means that the protocol is ABI/architecture specific:
38 * we currently can't model-check a x86 process from a x86_64 process.
40 * Moreover the protocol is not stable. The same version of the library should be used
41 * for the client and the server.
44 /* Basic structure: all message start with a message type */
45 struct s_mc_message_t {
46 simgrid::mc::MessageType type;
49 struct s_mc_message_int_t {
50 simgrid::mc::MessageType type;
55 struct s_mc_message_initial_addresses_t {
56 simgrid::mc::MessageType type;
57 xbt_mheap_t mmalloc_default_mdp;
58 unsigned long* maxpid;
61 struct s_mc_message_ignore_heap_t {
62 simgrid::mc::MessageType type;
69 struct s_mc_message_ignore_memory_t {
70 simgrid::mc::MessageType type;
75 struct s_mc_message_stack_region_t {
76 simgrid::mc::MessageType type;
77 s_stack_region_t stack_region;
80 struct s_mc_message_register_symbol_t {
81 simgrid::mc::MessageType type;
82 std::array<char, 128> name;
83 int (*callback)(void*);
87 /* Server -> client */
88 struct s_mc_message_simcall_execute_t {
89 simgrid::mc::MessageType type;
91 int times_considered_;
93 struct s_mc_message_simcall_execute_answer_t {
94 simgrid::mc::MessageType type;
95 std::array<char, SIMCALL_SERIALIZATION_BUFFER_SIZE> buffer;
98 struct s_mc_message_restore_t {
99 simgrid::mc::MessageType type;
103 struct s_mc_message_actors_status_answer_t {
104 simgrid::mc::MessageType type;
107 struct s_mc_message_actors_status_one_t { // an array of `s_mc_message_actors_status_one_t[count]` is sent right after
108 // after a s_mc_message_actors_status_answer_t
114 #endif // __cplusplus