void Scheduler_Mutex_Actions::acquire_action(const char* why) {
OS_Mutex_Interface* mutex = get_mutex();
// spin and receive to avoid deadlock; other core may be trying to send US something
Timeout_Timer tt("scheduler mutex", 60, mutex->get_holder()); tt.start();
while (0 != mutex->try_lock()) {
Timeout_Timer::check_all();
mutex->dec_and_check_recursion_depth();
Message_Statics::process_any_incoming_messages(false); // could check to ensure no_message
mutex->check_and_inc_recursion_depth();
}
if (tracking) mutex->set_holder(Logical_Core::my_rank());
}
void Semaphore_Mutex_Actions::acquire_action(const char*) {
if (Force_Direct_Squeak_Interpreter_Access)
return;
// xxxxxx This code could/should be better factored across the various mutexes. -- dmu 4/09
// spin and receive to avoid deadlock; other core may be trying to send US something
OS_Mutex_Interface* mutex = get_mutex();
assert_always(!mutex->is_held()); // deadlock check
Timeout_Timer tt("semaphore mutex", check_assertions ? 300 : 60, mutex->get_holder()); tt.start();
while (!mutex->try_lock()) {
Timeout_Timer::check_all();
mutex->dec_and_check_recursion_depth();
Message_Statics::process_any_incoming_messages(false); // could check to ensure no_message
mutex->check_and_inc_recursion_depth();
}
if (tracking) mutex->set_holder(Logical_Core::my_rank());
}