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, CONTINUE, IGNORE_HEAP, UNIGNORE_HEAP, IGNORE_MEMORY, STACK_REGION,
30 REGISTER_SYMBOL, DEADLOCK_CHECK, DEADLOCK_CHECK_REPLY, WAITING, SIMCALL_HANDLE,
31 SIMCALL_IS_PENDING, SIMCALL_IS_PENDING_ANSWER, SIMCALL_IS_VISIBLE, SIMCALL_IS_VISIBLE_ANSWER,
32 SIMCALL_TO_STRING, SIMCALL_TO_STRING_ANSWER, SIMCALL_DOT_LABEL, ASSERTION_FAILED, ACTOR_ENABLED,
36 } // namespace simgrid
38 constexpr unsigned MC_MESSAGE_LENGTH = 512;
40 /** Basic structure for a MC message
42 * The current version of the client/server protocol sends C structures over `AF_LOCAL`
43 * `SOCK_SEQPACKET` sockets. This means that the protocol is ABI/architecture specific:
44 * we currently can't model-check a x86 process from a x86_64 process.
46 * Moreover the protocol is not stable. The same version of the library should be used
47 * for the client and the server.
50 /* Basic structure: all message start with a message type */
51 struct s_mc_message_t {
52 simgrid::mc::MessageType type;
55 struct s_mc_message_int_t {
56 simgrid::mc::MessageType type;
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_handle_t {
89 simgrid::mc::MessageType type;
94 struct s_mc_message_restore_t {
95 simgrid::mc::MessageType type;
99 struct s_mc_message_actor_enabled_t {
100 simgrid::mc::MessageType type;
101 aid_t aid; // actor ID
105 struct s_mc_message_simcall_is_pending_t { // MessageType::SIMCALL_IS_PENDING
106 simgrid::mc::MessageType type;
110 struct s_mc_message_simcall_is_pending_answer_t { // MessageType::SIMCALL_IS_PENDING_ANSWER
111 simgrid::mc::MessageType type;
115 struct s_mc_message_simcall_is_visible_t { // MessageType::SIMCALL_IS_VISIBLE
116 simgrid::mc::MessageType type;
119 struct s_mc_message_simcall_is_visible_answer_t { // MessageType::SIMCALL_IS_VISIBLE_ANSWER
120 simgrid::mc::MessageType type;
124 struct s_mc_message_simcall_to_string_t { // MessageType::SIMCALL_TO_STRING or MessageType::SIMCALL_DOT_LABEL
125 simgrid::mc::MessageType type;
129 struct s_mc_message_simcall_to_string_answer_t { // MessageType::SIMCALL_TO_STRING_ANSWER
130 simgrid::mc::MessageType type;
134 #endif // __cplusplus