1 /* Copyright (c) 2015-2021. 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_MC_PROTOCOL_H
7 #define SIMGRID_MC_PROTOCOL_H
9 // ***** Environment variables for passing context to the model-checked process
11 /** Environment variable name used to pass the communication socket.
13 * It is set by `simgrid-mc` to enable MC support in the children processes
15 #define MC_ENV_SOCKET_FD "SIMGRID_MC_SOCKET_FD"
19 #include "mc/datatypes.h"
20 #include "simgrid/forward.h" // aid_t
23 #include <xbt/utility.hpp>
29 XBT_DECLARE_ENUM_CLASS(MessageType, NONE, INITIAL_ADDRESSES, CONTINUE, IGNORE_HEAP, UNIGNORE_HEAP, IGNORE_MEMORY,
30 STACK_REGION, REGISTER_SYMBOL, DEADLOCK_CHECK, DEADLOCK_CHECK_REPLY, WAITING, SIMCALL_HANDLE,
31 SIMCALL_IS_VISIBLE, SIMCALL_IS_VISIBLE_ANSWER, SIMCALL_TO_STRING, SIMCALL_TO_STRING_ANSWER,
32 SIMCALL_DOT_LABEL, ASSERTION_FAILED, ACTOR_ENABLED, ACTOR_ENABLED_REPLY);
35 } // namespace simgrid
37 constexpr unsigned MC_MESSAGE_LENGTH = 512;
39 /** Basic structure for a MC message
41 * The current version of the client/server protocol sends C structures over `AF_LOCAL`
42 * `SOCK_SEQPACKET` sockets. This means that the protocol is ABI/architecture specific:
43 * we currently can't model-check a x86 process from a x86_64 process.
45 * Moreover the protocol is not stable. The same version of the library should be used
46 * for the client and the server.
49 /* Basic structure: all message start with a message type */
50 struct s_mc_message_t {
51 simgrid::mc::MessageType type;
54 struct s_mc_message_int_t {
55 simgrid::mc::MessageType type;
60 struct s_mc_message_initial_addresses_t {
61 simgrid::mc::MessageType type;
62 void* mmalloc_default_mdp;
68 struct s_mc_message_ignore_heap_t {
69 simgrid::mc::MessageType type;
76 struct s_mc_message_ignore_memory_t {
77 simgrid::mc::MessageType type;
82 struct s_mc_message_stack_region_t {
83 simgrid::mc::MessageType type;
84 s_stack_region_t stack_region;
87 struct s_mc_message_register_symbol_t {
88 simgrid::mc::MessageType type;
89 std::array<char, 128> name;
90 int (*callback)(void*);
94 /* Server -> client */
95 struct s_mc_message_simcall_handle_t {
96 simgrid::mc::MessageType type;
98 int times_considered_;
101 struct s_mc_message_restore_t {
102 simgrid::mc::MessageType type;
106 struct s_mc_message_actor_enabled_t {
107 simgrid::mc::MessageType type;
108 aid_t aid; // actor ID
112 struct s_mc_message_simcall_is_visible_t { // MessageType::SIMCALL_IS_VISIBLE
113 simgrid::mc::MessageType type;
116 struct s_mc_message_simcall_is_visible_answer_t { // MessageType::SIMCALL_IS_VISIBLE_ANSWER
117 simgrid::mc::MessageType type;
121 struct s_mc_message_simcall_to_string_t { // MessageType::SIMCALL_TO_STRING or MessageType::SIMCALL_DOT_LABEL
122 simgrid::mc::MessageType type;
126 struct s_mc_message_simcall_to_string_answer_t { // MessageType::SIMCALL_TO_STRING_ANSWER
127 simgrid::mc::MessageType type;
131 #endif // __cplusplus