1 /* Copyright (c) 2008-2023. 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 #include "src/mc/ModelChecker.hpp"
7 #include "src/mc/explo/Exploration.hpp"
8 #include "src/mc/explo/LivenessChecker.hpp"
9 #include "src/mc/mc_config.hpp"
10 #include "src/mc/mc_exit.hpp"
11 #include "src/mc/mc_private.hpp"
12 #include "src/mc/sosp/RemoteProcessMemory.hpp"
13 #include "src/mc/transition/TransitionComm.hpp"
14 #include "xbt/automaton.hpp"
15 #include "xbt/system_error.hpp"
19 #include <sys/ptrace.h>
22 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_ModelChecker, mc, "ModelChecker");
24 ::simgrid::mc::ModelChecker* mc_model_checker = nullptr;
26 namespace simgrid::mc {
28 ModelChecker::ModelChecker(std::unique_ptr<RemoteProcessMemory> remote_memory)
29 : remote_process_memory_(std::move(remote_memory))
33 bool ModelChecker::handle_message(const char* buffer, ssize_t size)
35 s_mc_message_t base_message;
36 xbt_assert(size >= (ssize_t)sizeof(base_message), "Broken message");
37 memcpy(&base_message, buffer, sizeof(base_message));
39 switch(base_message.type) {
40 case MessageType::INITIAL_ADDRESSES: {
41 s_mc_message_initial_addresses_t message;
42 xbt_assert(size == sizeof(message), "Broken message. Got %d bytes instead of %d.", (int)size, (int)sizeof(message));
43 memcpy(&message, buffer, sizeof(message));
45 get_remote_process_memory().init(message.mmalloc_default_mdp);
49 case MessageType::IGNORE_HEAP: {
50 s_mc_message_ignore_heap_t message;
51 xbt_assert(size == sizeof(message), "Broken message");
52 memcpy(&message, buffer, sizeof(message));
54 IgnoredHeapRegion region;
55 region.block = message.block;
56 region.fragment = message.fragment;
57 region.address = message.address;
58 region.size = message.size;
59 get_remote_process_memory().ignore_heap(region);
63 case MessageType::UNIGNORE_HEAP: {
64 s_mc_message_ignore_memory_t message;
65 xbt_assert(size == sizeof(message), "Broken message");
66 memcpy(&message, buffer, sizeof(message));
67 get_remote_process_memory().unignore_heap((void*)(std::uintptr_t)message.addr, message.size);
71 case MessageType::IGNORE_MEMORY: {
72 s_mc_message_ignore_memory_t message;
73 xbt_assert(size == sizeof(message), "Broken message");
74 memcpy(&message, buffer, sizeof(message));
75 this->get_remote_process_memory().ignore_region(message.addr, message.size);
79 case MessageType::STACK_REGION: {
80 s_mc_message_stack_region_t message;
81 xbt_assert(size == sizeof(message), "Broken message");
82 memcpy(&message, buffer, sizeof(message));
83 this->get_remote_process_memory().stack_areas().push_back(message.stack_region);
86 case MessageType::REGISTER_SYMBOL: {
87 s_mc_message_register_symbol_t message;
88 xbt_assert(size == sizeof(message), "Broken message");
89 memcpy(&message, buffer, sizeof(message));
90 xbt_assert(not message.callback, "Support for client-side function proposition is not implemented.");
91 XBT_DEBUG("Received symbol: %s", message.name.data());
93 LivenessChecker::automaton_register_symbol(get_remote_process_memory(), message.name.data(),
94 remote((int*)message.data));
98 case MessageType::WAITING:
101 case MessageType::ASSERTION_FAILED:
102 Exploration::get_instance()->report_assertion_failure();
106 xbt_die("Unexpected message from model-checked application");
111 } // namespace simgrid::mc