+typedef struct s_mc_int_message {
+ e_mc_message_type type;
+ uint64_t value;
+} s_mc_int_message_t, *mc_int_message_t;
+
+typedef struct s_mc_ignore_heap_message {
+ e_mc_message_type type;
+ int block;
+ int fragment;
+ void *address;
+ size_t size;
+} s_mc_ignore_heap_message_t, *mc_ignore_heap_message_t;
+
+typedef struct s_mc_ignore_memory_message {
+ e_mc_message_type type;
+ uint64_t addr;
+ size_t size;
+} s_mc_ignore_memory_message_t, *mc_ignore_memory_message_t;
+
+typedef struct s_mc_stack_region_message {
+ e_mc_message_type type;
+ s_stack_region_t stack_region;
+} s_mc_stack_region_message_t, *mc_stack_region_message_t;
+
+typedef struct s_mc_simcall_handle_message {
+ e_mc_message_type type;
+ unsigned long pid;
+ int value;
+} s_mc_simcall_handle_message_t, *mc_simcall_handle_message;
+
+typedef struct s_mc_register_symbol_message {
+ e_mc_message_type type;
+ char name[128];
+ int (*callback)(void*);
+ void* data;
+} s_mc_register_symbol_message_t, * mc_register_symbol_message_t;
+
+typedef struct s_mc_restore_message {
+ e_mc_message_type type;
+ int index;
+} s_mc_restore_message_t, *mc_restore_message_t;
+
+XBT_PRIVATE int MC_protocol_send(int socket, const void* message, size_t size);
+XBT_PRIVATE int MC_protocol_send_simple_message(int socket, e_mc_message_type type);
+XBT_PRIVATE ssize_t MC_receive_message(int socket, void* message, size_t size, int options);
+
+XBT_PRIVATE const char* MC_message_type_name(e_mc_message_type type);
+XBT_PRIVATE const char* MC_mode_name(e_mc_mode_t mode);