1 /* Copyright (c) 2015-2020. 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 #include "mc/datatypes.h"
10 #include "simgrid/forward.h"
15 // ***** Environment variables for passing context to the model-checked process
17 /** Environment variable name used to pass the communication socket.
19 * It is set by `simgrid-mc` to enable MC support in the children processes
21 #define MC_ENV_SOCKET_FD "SIMGRID_MC_SOCKET_FD"
25 enum e_mc_message_type {
28 MC_MESSAGE_IGNORE_HEAP,
29 MC_MESSAGE_UNIGNORE_HEAP,
30 MC_MESSAGE_IGNORE_MEMORY,
31 MC_MESSAGE_STACK_REGION,
32 MC_MESSAGE_REGISTER_SYMBOL,
33 MC_MESSAGE_DEADLOCK_CHECK,
34 MC_MESSAGE_DEADLOCK_CHECK_REPLY,
36 MC_MESSAGE_SIMCALL_HANDLE,
37 MC_MESSAGE_ASSERTION_FAILED,
38 MC_MESSAGE_ACTOR_ENABLED,
39 MC_MESSAGE_ACTOR_ENABLED_REPLY
42 #define MC_MESSAGE_LENGTH 512
44 /** Basic structure for a MC message
46 * The current version of the client/server protocol sends C structures over `AF_LOCAL`
47 * `SOCK_SEQPACKET` sockets. This means that the protocol is ABI/architecture specific:
48 * we currently can't model-check a x86 process from a x86_64 process.
50 * Moreover the protocol is not stable. The same version of the library should be used
51 * for the client and the server.
54 /* Basic structure: all message start with a message type */
55 struct s_mc_message_t {
56 enum e_mc_message_type type;
59 struct s_mc_message_int_t {
60 enum e_mc_message_type type;
65 struct s_mc_message_ignore_heap_t {
66 enum e_mc_message_type type;
73 struct s_mc_message_ignore_memory_t {
74 enum e_mc_message_type type;
79 struct s_mc_message_stack_region_t {
80 enum e_mc_message_type type;
81 s_stack_region_t stack_region;
84 struct s_mc_message_register_symbol_t {
85 enum e_mc_message_type type;
87 int (*callback)(void*);
91 /* Server -> client */
92 struct s_mc_message_simcall_handle_t {
93 enum e_mc_message_type type;
98 struct s_mc_message_restore_t {
99 enum e_mc_message_type type;
103 struct s_mc_message_actor_enabled_t {
104 enum e_mc_message_type type;
105 aid_t aid; // actor ID
108 XBT_PRIVATE const char* MC_message_type_name(enum e_mc_message_type type);