1 /* Copyright (c) 2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #ifndef SIMGRID_MC_PROTOCOL_H
8 #define SIMGRID_MC_PROTOCOL_H
12 #include "mc/datatypes.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 "SIMGRIC_MC"
23 /** Environment variable name used to pass the communication socket */
24 #define MC_ENV_SOCKET_FD "SIMGRID_MC_SOCKET_FD"
34 extern e_mc_mode_t mc_mode;
41 MC_MESSAGE_IGNORE_HEAP,
42 MC_MESSAGE_UNIGNORE_HEAP,
43 MC_MESSAGE_IGNORE_MEMORY,
44 MC_MESSAGE_STACK_REGION,
45 MC_MESSAGE_REGISTER_SYMBOL,
46 MC_MESSAGE_DEADLOCK_CHECK,
47 MC_MESSAGE_DEADLOCK_CHECK_REPLY,
49 MC_MESSAGE_SIMCALL_HANDLE,
50 MC_MESSAGE_ASSERTION_FAILED,
53 #define MC_MESSAGE_LENGTH 512
55 /** Basic structure for a MC message
57 * The current version of the client/server protocol sends C structures over `AF_LOCAL`
58 * `SOCK_DGRAM` sockets. This means that the protocol is ABI/architecture specific:
59 * we currently can't model-check a x86 process from a x86_64 process.
61 * Moreover the protocol is not stable. The same version of the library should be used
62 * for the client and the server.
64 * This is the basic structure shared by all messages: all message start with a message
67 typedef struct s_mc_message {
68 e_mc_message_type type;
69 } s_mc_message_t, *mc_message_t;
71 typedef struct s_mc_int_message {
72 e_mc_message_type type;
74 } s_mc_int_message_t, *mc_int_message_t;
76 typedef struct s_mc_ignore_heap_message {
77 e_mc_message_type type;
78 s_mc_heap_ignore_region_t region;
79 } s_mc_ignore_heap_message_t, *mc_ignore_heap_message_t;
81 typedef struct s_mc_ignore_memory_message {
82 e_mc_message_type type;
85 } s_mc_ignore_memory_message_t, *mc_ignore_memory_message_t;
87 typedef struct s_mc_stack_region_message {
88 e_mc_message_type type;
89 s_stack_region_t stack_region;
90 } s_mc_stack_region_message_t, *mc_stack_region_message_t;
92 typedef struct s_mc_simcall_handle_message {
93 e_mc_message_type type;
96 } s_mc_simcall_handle_message_t, *mc_simcall_handle_message;
98 typedef struct s_mc_register_symbol_message {
99 e_mc_message_type type;
101 int (*callback)(void*);
103 } s_mc_register_symbol_message_t, * mc_register_symbol_message_t;
105 XBT_PRIVATE int MC_protocol_send(int socket, const void* message, size_t size);
106 XBT_PRIVATE int MC_protocol_send_simple_message(int socket, e_mc_message_type type);
107 XBT_PRIVATE ssize_t MC_receive_message(int socket, void* message, size_t size, int options);
109 XBT_PRIVATE const char* MC_message_type_name(e_mc_message_type type);
110 XBT_PRIVATE const char* MC_mode_name(e_mc_mode_t mode);