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. */
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"
31 MC_MESSAGE_CONTINUE = 2,
32 MC_MESSAGE_IGNORE_REGION = 3,
35 #define MC_MESSAGE_LENGTH 512
37 /** Basic structure for a MC message
39 * The current version of the client/server protocol sends C structures over `AF_LOCAL`
40 * `SOCK_DGRAM` sockets. This means that the protocol is ABI/architecture specific:
41 * we currently can't model-check a x86 process from a x86_64 process.
43 * Moreover the protocol is not stable. The same version of the library should be used
44 * for the client and the server.
46 * This is the basic structure shared by all messages: all message start with a message
49 typedef struct s_mc_message {
50 e_mc_message_type type;
51 } s_mc_message_t, *mc_message_t;
53 typedef struct s_mc_ignore_region_message {
54 e_mc_message_type type;
55 s_mc_heap_ignore_region_t region;
56 } s_mc_ignore_region_message_t, *mc_ignore_region_message_t;
58 int MC_protocol_send(int socket, void* message, size_t size);
59 int MC_protocol_send_simple_message(int socket, int type);
60 int MC_protocol_hello(int socket);