1 /* Copyright (c) 2015-2018. 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"
16 // ***** Environment variables for passing context to the model-checked process
18 /** Environment variable name set by `simgrid-mc` to enable MC support in the
19 * children MC processes
21 #define MC_ENV_VARIABLE "SIMGRID_MC"
23 /** Environment variable name used to pass the communication socket */
24 #define MC_ENV_SOCKET_FD "SIMGRID_MC_SOCKET_FD"
28 enum e_mc_message_type {
31 MC_MESSAGE_IGNORE_HEAP,
32 MC_MESSAGE_UNIGNORE_HEAP,
33 MC_MESSAGE_IGNORE_MEMORY,
34 MC_MESSAGE_STACK_REGION,
35 MC_MESSAGE_REGISTER_SYMBOL,
36 MC_MESSAGE_DEADLOCK_CHECK,
37 MC_MESSAGE_DEADLOCK_CHECK_REPLY,
39 MC_MESSAGE_SIMCALL_HANDLE,
40 MC_MESSAGE_ASSERTION_FAILED,
41 // MCer request to finish the restoration:
43 MC_MESSAGE_ACTOR_ENABLED,
44 MC_MESSAGE_ACTOR_ENABLED_REPLY
47 #define MC_MESSAGE_LENGTH 512
49 /** Basic structure for a MC message
51 * The current version of the client/server protocol sends C structures over `AF_LOCAL`
52 * `SOCK_SEQPACKET` sockets. This means that the protocol is ABI/architecture specific:
53 * we currently can't model-check a x86 process from a x86_64 process.
55 * Moreover the protocol is not stable. The same version of the library should be used
56 * for the client and the server.
59 /* Basic structure: all message start with a message type */
60 struct s_mc_message_t {
61 enum e_mc_message_type type;
64 struct s_mc_message_int_t {
65 enum e_mc_message_type type;
70 struct s_mc_message_ignore_heap_t {
71 enum e_mc_message_type type;
78 struct s_mc_message_ignore_memory_t {
79 enum e_mc_message_type type;
84 struct s_mc_message_stack_region_t {
85 enum e_mc_message_type type;
86 s_stack_region_t stack_region;
89 struct s_mc_message_register_symbol_t {
90 enum e_mc_message_type type;
92 int (*callback)(void*);
96 /* Server -> client */
97 struct s_mc_message_simcall_handle_t {
98 enum e_mc_message_type type;
103 struct s_mc_message_restore_t {
104 enum e_mc_message_type type;
108 struct s_mc_message_actor_enabled_t {
109 enum e_mc_message_type type;
110 aid_t aid; // actor ID
113 XBT_PRIVATE const char* MC_message_type_name(enum e_mc_message_type type);