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Merge pull request #2967 from Subv/thread_wakeup_callbacks

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Kernel/Threads: When putting a thread to wait, specify a function to execute when it is awoken
This commit is contained in:
Sebastian Valle 2017-09-30 09:12:18 -05:00 • committed by GitHub
commit db752b52e8
4 changed files with 91 additions and 17 deletions
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13
src/core/hle/kernel/thread.cpp
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@ -247,12 +247,15 @@ static void ThreadWakeupCallback(u64 thread_handle, int cycles_late) {
if (thread->status == THREADSTATUS_WAIT_SYNCH_ANY ||
thread->status == THREADSTATUS_WAIT_SYNCH_ALL || thread->status == THREADSTATUS_WAIT_ARB) {
thread->wait_set_output = false;
// Invoke the wakeup callback before clearing the wait objects
if (thread->wakeup_callback)
thread->wakeup_callback(ThreadWakeupReason::Timeout, thread, nullptr);
// Remove the thread from each of its waiting objects' waitlists
for (auto& object : thread->wait_objects)
object->RemoveWaitingThread(thread.get());
thread->wait_objects.clear();
thread->SetWaitSynchronizationResult(RESULT_TIMEOUT);
}
thread->ResumeFromWait();
@ -278,6 +281,9 @@ void Thread::ResumeFromWait() {
break;
case THREADSTATUS_READY:
// The thread's wakeup callback must have already been cleared when the thread was first
// awoken.
ASSERT(wakeup_callback == nullptr);
// If the thread is waiting on multiple wait objects, it might be awoken more than once
// before actually resuming. We can ignore subsequent wakeups if the thread status has
// already been set to THREADSTATUS_READY.
@ -293,6 +299,8 @@ void Thread::ResumeFromWait() {
return;
}
wakeup_callback = nullptr;
ready_queue.push_back(current_priority, this);
status = THREADSTATUS_READY;
Core::System::GetInstance().PrepareReschedule();
@ -395,7 +403,6 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
thread->nominal_priority = thread->current_priority = priority;
thread->last_running_ticks = CoreTiming::GetTicks();
thread->processor_id = processor_id;
thread->wait_set_output = false;
thread->wait_objects.clear();
thread->wait_address = 0;
thread->name = std::move(name);