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Kernel: Corrected the implementation of svcArbitrateLock and svcArbitrateUnlock.

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Switch mutexes are no longer kernel objects, they are managed in userland and only use the kernel to handle the contention case.
Mutex addresses store a special flag value (0x40000000) to notify the guest code that there are still some threads waiting for the mutex to be released. This flag is updated when a thread calls ArbitrateUnlock.

TODO:
* Fix svcWaitProcessWideKey
* Fix svcSignalProcessWideKey
* Remove the Mutex class.
This commit is contained in:
Subv 2018-04-20 12:01:14 -05:00
parent 326b044c19
commit e81a2080eb
6 changed files with 126 additions and 22 deletions
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13
src/core/hle/kernel/thread.cpp
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@ -126,6 +126,14 @@ static void ThreadWakeupCallback(u64 thread_handle, int cycles_late) {
resume = thread->wakeup_callback(ThreadWakeupReason::Timeout, thread, nullptr, 0);
}
if (thread->mutex_wait_address != 0 || thread->condvar_wait_address != 0 ||
thread->wait_handle) {
ASSERT(thread->status == THREADSTATUS_WAIT_MUTEX);
thread->mutex_wait_address = 0;
thread->condvar_wait_address = 0;
thread->wait_handle = 0;
}
if (resume)
thread->ResumeFromWait();
}
@ -151,6 +159,7 @@ void Thread::ResumeFromWait() {
case THREADSTATUS_WAIT_HLE_EVENT:
case THREADSTATUS_WAIT_SLEEP:
case THREADSTATUS_WAIT_IPC:
case THREADSTATUS_WAIT_MUTEX:
break;
case THREADSTATUS_READY:
@ -256,7 +265,9 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
thread->last_running_ticks = CoreTiming::GetTicks();
thread->processor_id = processor_id;
thread->wait_objects.clear();
thread->wait_address = 0;
thread->mutex_wait_address = 0;
thread->condvar_wait_address = 0;
thread->wait_handle = 0;
thread->name = std::move(name);
thread->callback_handle = wakeup_callback_handle_table.Create(thread).Unwrap();
thread->owner_process = owner_process;