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https://github.com/yuzu-emu/yuzu.git
synced 2024-08-21 13:43:22 +02:00
Merge pull request #849 from bunnei/fix-waitsynch-2
Fix svcWaitSynch to correctly acquire wait objects
This commit is contained in:
commit
2e16edbc56
@ -9,11 +9,15 @@
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#include "core/arm/arm_interface.h"
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#include "core/memory.h"
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#include "core/hle/hle.h"
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#include "core/hle/result.h"
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namespace HLE {
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#define PARAM(n) Core::g_app_core->GetReg(n)
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/// An invalid result code that is meant to be overwritten when a thread resumes from waiting
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static const ResultCode RESULT_INVALID(0xDEADC0DE);
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/**
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* HLE a function return from the current ARM11 userland process
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* @param res Result to return
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@ -57,8 +61,11 @@ template<ResultCode func(s32*, u32*, s32, bool, s64)> void Wrap() {
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s32 param_1 = 0;
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s32 retval = func(¶m_1, (Handle*)Memory::GetPointer(PARAM(1)), (s32)PARAM(2),
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(PARAM(3) != 0), (((s64)PARAM(4) << 32) | PARAM(0))).raw;
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Core::g_app_core->SetReg(1, (u32)param_1);
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FuncReturn(retval);
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if (retval != RESULT_INVALID.raw) {
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Core::g_app_core->SetReg(1, (u32)param_1);
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FuncReturn(retval);
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}
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}
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template<ResultCode func(u32, u32, u32, u32, s64)> void Wrap() {
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@ -73,7 +80,11 @@ template<ResultCode func(u32*)> void Wrap(){
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}
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template<ResultCode func(u32, s64)> void Wrap() {
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FuncReturn(func(PARAM(0), (((s64)PARAM(3) << 32) | PARAM(2))).raw);
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s32 retval = func(PARAM(0), (((s64)PARAM(3) << 32) | PARAM(2))).raw;
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if (retval != RESULT_INVALID.raw) {
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FuncReturn(retval);
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}
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}
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template<ResultCode func(void*, void*, u32)> void Wrap(){
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@ -41,10 +41,7 @@ void Event::Acquire() {
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void Event::Signal() {
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signaled = true;
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WakeupAllWaitingThreads();
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HLE::Reschedule(__func__);
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}
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void Event::Clear() {
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@ -32,27 +32,13 @@ void WaitObject::RemoveWaitingThread(Thread* thread) {
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waiting_threads.erase(itr);
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}
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SharedPtr<Thread> WaitObject::WakeupNextThread() {
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if (waiting_threads.empty())
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return nullptr;
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auto next_thread = std::move(waiting_threads.front());
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waiting_threads.erase(waiting_threads.begin());
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next_thread->ReleaseWaitObject(this);
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return next_thread;
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}
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void WaitObject::WakeupAllWaitingThreads() {
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auto waiting_threads_copy = waiting_threads;
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for (auto thread : waiting_threads)
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thread->ResumeFromWait();
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// We use a copy because ReleaseWaitObject will remove the thread from this object's
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// waiting_threads list
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for (auto thread : waiting_threads_copy)
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thread->ReleaseWaitObject(this);
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waiting_threads.clear();
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ASSERT_MSG(waiting_threads.empty(), "failed to awaken all waiting threads!");
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HLE::Reschedule(__func__);
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}
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HandleTable::HandleTable() {
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@ -140,12 +140,6 @@ public:
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*/
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void RemoveWaitingThread(Thread* thread);
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/**
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* Wake up the next thread waiting on this object
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* @return Pointer to the thread that was resumed, nullptr if no threads are waiting
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*/
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SharedPtr<Thread> WakeupNextThread();
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/// Wake up all threads waiting on this object
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void WakeupAllWaitingThreads();
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@ -23,12 +23,7 @@ static void ResumeWaitingThread(Mutex* mutex) {
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// Reset mutex lock thread handle, nothing is waiting
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mutex->lock_count = 0;
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mutex->holding_thread = nullptr;
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// Find the next waiting thread for the mutex...
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auto next_thread = mutex->WakeupNextThread();
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if (next_thread != nullptr) {
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mutex->Acquire(next_thread);
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}
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mutex->WakeupAllWaitingThreads();
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}
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void ReleaseThreadMutexes(Thread* thread) {
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@ -94,8 +89,6 @@ void Mutex::Release() {
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ResumeWaitingThread(this);
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}
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}
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HLE::Reschedule(__func__);
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}
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} // namespace
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@ -48,13 +48,7 @@ ResultVal<s32> Semaphore::Release(s32 release_count) {
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s32 previous_count = available_count;
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available_count += release_count;
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// Notify some of the threads that the semaphore has been released
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// stop once the semaphore is full again or there are no more waiting threads
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while (!ShouldWait() && WakeupNextThread() != nullptr) {
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Acquire();
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}
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HLE::Reschedule(__func__);
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WakeupAllWaitingThreads();
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return MakeResult<s32>(previous_count);
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}
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@ -13,6 +13,7 @@
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#include "common/thread_queue_list.h"
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#include "core/arm/arm_interface.h"
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#include "core/arm/skyeye_common/armdefs.h"
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#include "core/core.h"
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#include "core/core_timing.h"
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#include "core/hle/hle.h"
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@ -193,8 +194,22 @@ static void SwitchContext(Thread* new_thread) {
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if (new_thread) {
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DEBUG_ASSERT_MSG(new_thread->status == THREADSTATUS_READY, "Thread must be ready to become running.");
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// Cancel any outstanding wakeup events for this thread
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CoreTiming::UnscheduleEvent(ThreadWakeupEventType, new_thread->callback_handle);
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current_thread = new_thread;
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// If the thread was waited by a svcWaitSynch call, step back PC by one instruction to rerun
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// the SVC when the thread wakes up. This is necessary to ensure that the thread can acquire
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// the requested wait object(s) before continuing.
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if (new_thread->waitsynch_waited) {
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// CPSR flag indicates CPU mode
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bool thumb_mode = (new_thread->context.cpsr & TBIT) != 0;
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// SVC instruction is 2 bytes for THUMB, 4 bytes for ARM
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new_thread->context.pc -= thumb_mode ? 2 : 4;
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}
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ready_queue.remove(new_thread->current_priority, new_thread);
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new_thread->status = THREADSTATUS_RUNNING;
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@ -243,6 +258,7 @@ void WaitCurrentThread_WaitSynchronization(std::vector<SharedPtr<WaitObject>> wa
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thread->wait_set_output = wait_set_output;
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thread->wait_all = wait_all;
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thread->wait_objects = std::move(wait_objects);
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thread->waitsynch_waited = true;
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thread->status = THREADSTATUS_WAIT_SYNCH;
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}
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@ -268,6 +284,8 @@ static void ThreadWakeupCallback(u64 thread_handle, int cycles_late) {
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return;
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}
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thread->waitsynch_waited = false;
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if (thread->status == THREADSTATUS_WAIT_SYNCH) {
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thread->SetWaitSynchronizationResult(ResultCode(ErrorDescription::Timeout, ErrorModule::OS,
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ErrorSummary::StatusChanged, ErrorLevel::Info));
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@ -288,63 +306,20 @@ void Thread::WakeAfterDelay(s64 nanoseconds) {
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CoreTiming::ScheduleEvent(usToCycles(microseconds), ThreadWakeupEventType, callback_handle);
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}
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void Thread::ReleaseWaitObject(WaitObject* wait_object) {
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if (status != THREADSTATUS_WAIT_SYNCH || wait_objects.empty()) {
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LOG_CRITICAL(Kernel, "thread is not waiting on any objects!");
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return;
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}
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// Remove this thread from the waiting object's thread list
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wait_object->RemoveWaitingThread(this);
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unsigned index = 0;
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bool wait_all_failed = false; // Will be set to true if any object is unavailable
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// Iterate through all waiting objects to check availability...
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for (auto itr = wait_objects.begin(); itr != wait_objects.end(); ++itr) {
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if ((*itr)->ShouldWait())
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wait_all_failed = true;
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// The output should be the last index of wait_object
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if (*itr == wait_object)
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index = itr - wait_objects.begin();
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}
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// If we are waiting on all objects...
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if (wait_all) {
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// Resume the thread only if all are available...
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if (!wait_all_failed) {
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SetWaitSynchronizationResult(RESULT_SUCCESS);
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SetWaitSynchronizationOutput(-1);
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ResumeFromWait();
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}
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} else {
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// Otherwise, resume
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SetWaitSynchronizationResult(RESULT_SUCCESS);
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if (wait_set_output)
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SetWaitSynchronizationOutput(index);
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ResumeFromWait();
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}
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}
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void Thread::ResumeFromWait() {
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// Cancel any outstanding wakeup events for this thread
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CoreTiming::UnscheduleEvent(ThreadWakeupEventType, callback_handle);
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switch (status) {
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case THREADSTATUS_WAIT_SYNCH:
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// Remove this thread from all other WaitObjects
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for (auto wait_object : wait_objects)
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wait_object->RemoveWaitingThread(this);
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break;
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case THREADSTATUS_WAIT_ARB:
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case THREADSTATUS_WAIT_SLEEP:
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break;
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case THREADSTATUS_RUNNING:
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case THREADSTATUS_READY:
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// If the thread is waiting on multiple wait objects, it might be awoken more than once
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// before actually resuming. We can ignore subsequent wakeups if the thread status has
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// already been set to THREADSTATUS_READY.
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return;
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case THREADSTATUS_RUNNING:
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DEBUG_ASSERT_MSG(false, "Thread with object id %u has already resumed.", GetObjectId());
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return;
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case THREADSTATUS_DEAD:
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@ -415,6 +390,7 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
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thread->callback_handle = wakeup_callback_handle_table.Create(thread).MoveFrom();
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thread->owner_process = g_current_process;
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thread->tls_index = -1;
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thread->waitsynch_waited = false;
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// Find the next available TLS index, and mark it as used
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auto& used_tls_slots = Kernel::g_current_process->used_tls_slots;
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@ -95,12 +95,6 @@ public:
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*/
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u32 GetThreadId() const { return thread_id; }
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/**
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* Release an acquired wait object
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* @param wait_object WaitObject to release
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*/
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void ReleaseWaitObject(WaitObject* wait_object);
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/**
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* Resumes a thread from waiting
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*/
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@ -152,6 +146,8 @@ public:
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s32 tls_index; ///< Index of the Thread Local Storage of the thread
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bool waitsynch_waited; ///< Set to true if the last svcWaitSynch call caused the thread to wait
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/// Mutexes currently held by this thread, which will be released when it exits.
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boost::container::flat_set<SharedPtr<Mutex>> held_mutexes;
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@ -163,12 +159,12 @@ public:
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std::string name;
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/// Handle used as userdata to reference this object when inserting into the CoreTiming queue.
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Handle callback_handle;
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private:
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Thread();
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~Thread() override;
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/// Handle used as userdata to reference this object when inserting into the CoreTiming queue.
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Handle callback_handle;
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};
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/**
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@ -40,9 +40,6 @@ const ResultCode ERR_NOT_FOUND(ErrorDescription::NotFound, ErrorModule::Kernel,
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const ResultCode ERR_PORT_NAME_TOO_LONG(ErrorDescription(30), ErrorModule::OS,
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ErrorSummary::InvalidArgument, ErrorLevel::Usage); // 0xE0E0181E
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/// An invalid result code that is meant to be overwritten when a thread resumes from waiting
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const ResultCode RESULT_INVALID(0xDEADC0DE);
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enum ControlMemoryOperation {
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MEMORY_OPERATION_HEAP = 0x00000003,
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MEMORY_OPERATION_GSP_HEAP = 0x00010003,
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@ -143,6 +140,10 @@ static ResultCode CloseHandle(Handle handle) {
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/// Wait for a handle to synchronize, timeout after the specified nanoseconds
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static ResultCode WaitSynchronization1(Handle handle, s64 nano_seconds) {
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auto object = Kernel::g_handle_table.GetWaitObject(handle);
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Kernel::Thread* thread = Kernel::GetCurrentThread();
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thread->waitsynch_waited = false;
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if (object == nullptr)
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return ERR_INVALID_HANDLE;
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@ -154,14 +155,14 @@ static ResultCode WaitSynchronization1(Handle handle, s64 nano_seconds) {
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// Check for next thread to schedule
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if (object->ShouldWait()) {
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object->AddWaitingThread(Kernel::GetCurrentThread());
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object->AddWaitingThread(thread);
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Kernel::WaitCurrentThread_WaitSynchronization({ object }, false, false);
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// Create an event to wake the thread up after the specified nanosecond delay has passed
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Kernel::GetCurrentThread()->WakeAfterDelay(nano_seconds);
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thread->WakeAfterDelay(nano_seconds);
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// NOTE: output of this SVC will be set later depending on how the thread resumes
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return RESULT_INVALID;
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return HLE::RESULT_INVALID;
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}
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object->Acquire();
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@ -173,6 +174,9 @@ static ResultCode WaitSynchronization1(Handle handle, s64 nano_seconds) {
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static ResultCode WaitSynchronizationN(s32* out, Handle* handles, s32 handle_count, bool wait_all, s64 nano_seconds) {
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bool wait_thread = !wait_all;
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int handle_index = 0;
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Kernel::Thread* thread = Kernel::GetCurrentThread();
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bool was_waiting = thread->waitsynch_waited;
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thread->waitsynch_waited = false;
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// Check if 'handles' is invalid
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if (handles == nullptr)
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@ -190,6 +194,9 @@ static ResultCode WaitSynchronizationN(s32* out, Handle* handles, s32 handle_cou
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// necessary
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if (handle_count != 0) {
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bool selected = false; // True once an object has been selected
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Kernel::SharedPtr<Kernel::WaitObject> wait_object;
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for (int i = 0; i < handle_count; ++i) {
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auto object = Kernel::g_handle_table.GetWaitObject(handles[i]);
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if (object == nullptr)
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@ -204,10 +211,11 @@ static ResultCode WaitSynchronizationN(s32* out, Handle* handles, s32 handle_cou
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wait_thread = true;
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} else {
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// Do not wait on this object, check if this object should be selected...
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if (!wait_all && !selected) {
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if (!wait_all && (!selected || (wait_object == object && was_waiting))) {
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// Do not wait the thread
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wait_thread = false;
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handle_index = i;
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wait_object = object;
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selected = true;
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}
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}
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@ -241,7 +249,7 @@ static ResultCode WaitSynchronizationN(s32* out, Handle* handles, s32 handle_cou
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Kernel::GetCurrentThread()->WakeAfterDelay(nano_seconds);
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// NOTE: output of this SVC will be set later depending on how the thread resumes
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return RESULT_INVALID;
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return HLE::RESULT_INVALID;
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}
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// Acquire objects if we did not wait...
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@ -261,7 +269,7 @@ static ResultCode WaitSynchronizationN(s32* out, Handle* handles, s32 handle_cou
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// TODO(bunnei): If 'wait_all' is true, this is probably wrong. However, real hardware does
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// not seem to set it to any meaningful value.
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*out = wait_all ? 0 : handle_index;
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*out = handle_count != 0 ? (wait_all ? -1 : handle_index) : 0;
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return RESULT_SUCCESS;
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}
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