void
RSIM_Simulator::terminate_self()
{
RSIM_Process *process = get_process();
if (!process->has_terminated())
return;
SAWYER_THREAD_TRAITS::RecursiveLockGuard lock(class_rwlock);
int status = process->get_termination_status();
if (WIFEXITED(status)) {
exit(WEXITSTATUS(status));
} else if (WIFSIGNALED(status)) {
struct sigaction sa, old;
memset(&sa, 0, sizeof sa);
sa.sa_handler = SIG_DFL;
sigaction(WTERMSIG(status), &sa, &old);
raise(WTERMSIG(status));
sigaction(WTERMSIG(status), &old, NULL);
} else if (WIFSTOPPED(status)) {
struct sigaction sa, old;
memset(&sa, 0, sizeof sa);
sa.sa_handler = SIG_DFL;
sigaction(WTERMSIG(status), &sa, &old);
raise(WTERMSIG(status));
sigaction(WTERMSIG(status), &old, NULL);
}
}
std::string
RSIM_Simulator::describe_termination()
{
std::ostringstream m;
RSIM_Process *process = get_process();
if (process->has_terminated()) {
int status = process->get_termination_status();
if (WIFEXITED(status)) {
mfprintf(m)("specimen %d exited with status %d", getpid(), WEXITSTATUS(status));
} else if (WIFSIGNALED(status)) {
mfprintf(m)("specimen %d exited due to signal %s %s",
getpid(), strsignal(WTERMSIG(status)), WCOREDUMP(status)?" core dumped":"");
} else if (WIFSTOPPED(status)) {
mfprintf(m)("specimen %d is stopped due to signal %s", getpid(), strsignal(WSTOPSIG(status)));
} else {
mfprintf(m)("specimen %d has unknown termination status: 0x%08x", getpid(), status);
}
} else {
mfprintf(m)("specimen %d has not exited yet", getpid());
}
return m.str();
}
int
RSIM_Simulator::main_loop()
{
RSIM_Process *process = get_process();
RSIM_Thread *thread = process->get_main_thread();
/* The simulator's main thread is executed by the calling thread because the simulator's main thread must be a thread group
* leader. */
bool cb_process_status = process->get_callbacks().call_process_callbacks(RSIM_Callbacks::BEFORE, process,
RSIM_Callbacks::ProcessCallback::START,
true);
// The process' main thread has already been created and initialized but has not started running yet.
thread->start();
thread->waitForState(RSIM_Thread::TERMINATED);
process->get_callbacks().call_process_callbacks(RSIM_Callbacks::AFTER, process,
RSIM_Callbacks::ProcessCallback::FINISH,
cb_process_status);
return process->get_termination_status();
}