Exemple #1
0
void my_signal_handler2(int signum) {
    ::signal(signum, SIG_DFL);
    void** f = static_cast<void**>(g_region.get_address());
    *f = reinterpret_cast<void*>(1);                      // Setting flag that shared memory now constains stacktrace.
    boost::stacktrace::safe_dump_to(f + 1, g_region.get_size() - sizeof(void*));

    ::raise(SIGABRT);
}
Exemple #2
0
int run_4(const char* argv[]) {
    using namespace boost::interprocess;
    {
        shared_memory_object shm_obj(open_only, "shared_memory", read_write);
        shm_obj.swap(g_shm);
    }

    {
        mapped_region m(g_shm, read_write, 0, shared_memory_size);
        m.swap(g_region);
    }

//[getting_started_on_program_restart_shmem
    void** f = static_cast<void**>(g_region.get_address());
    if (*f) {                                                 // Checking if memory constains stacktrace.
        boost::stacktrace::stacktrace st 
            = boost::stacktrace::stacktrace::from_dump(f + 1, g_region.get_size() - sizeof(bool));

        std::cout << "Previous run crashed and left trace in shared memory:\n" << st << std::endl;
        *f = 0; /*<-*/
        shared_memory_object::remove("shared_memory");
        if (std::string(argv[0]).find("noop") == std::string::npos) {
            if (!st) {
                return 43;
            }
        } else {
           if (st) {
                return 44;
            }
        }
    } else {
        return 42; /*->*/
    }
//]


    return 0;
}
Exemple #3
0
int run_3(const char* /*argv*/[]) {
    using namespace boost::interprocess;
    {
        shared_memory_object shm_obj(open_or_create, "shared_memory", read_write);
        shm_obj.swap(g_shm);
    }
    g_shm.truncate(shared_memory_size);

    {
        mapped_region m(g_shm, read_write, 0, shared_memory_size);
        m.swap(g_region);
    }
    void** f = static_cast<void**>(g_region.get_address());
    *f = 0;

    ::signal(SIGSEGV, &my_signal_handler2);
    ::signal(SIGABRT, &my_signal_handler2);
    foo(5);
    return 31;
}
Exemple #4
0
 boost::fusion::map<headers::content_length> generate_body(OutputIterator sink, const boost::interprocess::mapped_region & region)
 {
     sink = boost::asio::buffer(region.get_address(), region.get_size());
     return boost::fusion::map<headers::content_length>(headers::content_length(region.get_size()));;
 }