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https://git.suyu.dev/suyu/suyu
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WaitSynchronizationN: Implement return values
This commit is contained in:
bunnei
parent
e4a5d8ad4f
commit
7faf2d8e06
10 changed files with 193 additions and 87 deletions
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@ -52,13 +52,13 @@ ResultCode ArbitrateAddress(Handle handle, ArbitrationType type, u32 address, s3
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// Wait current thread (acquire the arbiter)...
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case ArbitrationType::WaitIfLessThan:
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if ((s32)Memory::Read32(address) <= value) {
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Kernel::WaitCurrentThread(WAITTYPE_ARB, object, address);
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Kernel::WaitCurrentThread_ArbitrateAddress(object, address);
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HLE::Reschedule(__func__);
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}
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break;
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case ArbitrationType::WaitIfLessThanWithTimeout:
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if ((s32)Memory::Read32(address) <= value) {
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Kernel::WaitCurrentThread(WAITTYPE_ARB, object, address);
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Kernel::WaitCurrentThread_ArbitrateAddress(object, address);
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Kernel::WakeThreadAfterDelay(GetCurrentThread(), nanoseconds);
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HLE::Reschedule(__func__);
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}
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@ -68,7 +68,7 @@ ResultCode ArbitrateAddress(Handle handle, ArbitrationType type, u32 address, s3
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s32 memory_value = Memory::Read32(address) - 1;
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Memory::Write32(address, memory_value);
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if (memory_value <= value) {
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Kernel::WaitCurrentThread(WAITTYPE_ARB, object, address);
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Kernel::WaitCurrentThread_ArbitrateAddress(object, address);
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HLE::Reschedule(__func__);
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}
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break;
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@ -78,7 +78,7 @@ ResultCode ArbitrateAddress(Handle handle, ArbitrationType type, u32 address, s3
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s32 memory_value = Memory::Read32(address) - 1;
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Memory::Write32(address, memory_value);
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if (memory_value <= value) {
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Kernel::WaitCurrentThread(WAITTYPE_ARB, object, address);
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Kernel::WaitCurrentThread_ArbitrateAddress(object, address);
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Kernel::WakeThreadAfterDelay(GetCurrentThread(), nanoseconds);
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HLE::Reschedule(__func__);
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}
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@ -28,11 +28,11 @@ public:
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bool signaled; ///< Whether the event has already been signaled
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std::string name; ///< Name of event (optional)
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ResultVal<bool> WaitSynchronization() override {
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ResultVal<bool> WaitSynchronization(unsigned index) override {
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bool wait = !signaled;
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if (wait) {
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AddWaitingThread(GetCurrentThread());
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Kernel::WaitCurrentThread(WAITTYPE_EVENT, this);
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Kernel::WaitCurrentThread_WaitSynchronization(WAITTYPE_EVENT, this, index);
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}
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return MakeResult<bool>(wait);
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}
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@ -30,13 +30,13 @@ void WaitObject::RemoveWaitingThread(Thread* thread) {
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waiting_threads.erase(itr);
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}
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Thread* WaitObject::ResumeNextThread() {
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Thread* WaitObject::ReleaseNextThread() {
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if (waiting_threads.empty())
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return nullptr;
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auto next_thread = waiting_threads.front();
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next_thread->ResumeFromWait();
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next_thread->ReleaseFromWait(this);
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waiting_threads.erase(waiting_threads.begin());
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return next_thread.get();
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@ -66,9 +66,10 @@ public:
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/**
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* Wait for kernel object to synchronize.
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* @param index Index of wait object (only applies to WaitSynchronizationN)
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* @return True if the current thread should wait as a result of the wait
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*/
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virtual ResultVal<bool> WaitSynchronization() {
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virtual ResultVal<bool> WaitSynchronization(unsigned index=0) {
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LOG_ERROR(Kernel, "(UNIMPLEMENTED)");
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return UnimplementedFunction(ErrorModule::Kernel);
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}
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@ -111,10 +112,10 @@ public:
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void RemoveWaitingThread(Thread* thead);
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/**
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* Resumes (and removes) the next thread waiting on this object
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* Releases (and removes) 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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Thread* ResumeNextThread();
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Thread* ReleaseNextThread();
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/// Releases all threads waiting on this object
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void ReleaseAllWaitingThreads();
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@ -26,7 +26,7 @@ public:
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Handle lock_thread; ///< Handle to thread that currently has mutex
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std::string name; ///< Name of mutex (optional)
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ResultVal<bool> WaitSynchronization() override;
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ResultVal<bool> WaitSynchronization(unsigned index) override;
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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@ -50,7 +50,7 @@ void MutexAcquireLock(Mutex* mutex, Handle thread = GetCurrentThread()->GetHandl
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*/
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void ResumeWaitingThread(Mutex* mutex) {
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// Find the next waiting thread for the mutex...
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auto next_thread = mutex->ResumeNextThread();
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auto next_thread = mutex->ReleaseNextThread();
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if (next_thread != nullptr) {
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MutexAcquireLock(mutex, next_thread->GetHandle());
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} else {
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@ -155,11 +155,11 @@ Handle CreateMutex(bool initial_locked, const std::string& name) {
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return handle;
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}
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ResultVal<bool> Mutex::WaitSynchronization() {
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ResultVal<bool> Mutex::WaitSynchronization(unsigned index) {
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bool wait = locked;
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if (locked) {
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AddWaitingThread(GetCurrentThread());
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Kernel::WaitCurrentThread(WAITTYPE_MUTEX, this);
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Kernel::WaitCurrentThread_WaitSynchronization(WAITTYPE_MUTEX, this, index);
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} else {
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// Lock the mutex when the first thread accesses it
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locked = true;
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@ -32,11 +32,11 @@ public:
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return available_count > 0;
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}
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ResultVal<bool> WaitSynchronization() override {
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ResultVal<bool> WaitSynchronization(unsigned index) override {
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bool wait = !IsAvailable();
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if (wait) {
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Kernel::WaitCurrentThread(WAITTYPE_SEMA, this);
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Kernel::WaitCurrentThread_WaitSynchronization(WAITTYPE_SEMA, this, index);
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AddWaitingThread(GetCurrentThread());
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} else {
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--available_count;
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@ -82,7 +82,7 @@ ResultCode ReleaseSemaphore(s32* count, Handle handle, s32 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 (semaphore->IsAvailable() && semaphore->ResumeNextThread() != nullptr) {
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while (semaphore->IsAvailable() && semaphore->ReleaseNextThread() != nullptr) {
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--semaphore->available_count;
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}
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@ -22,11 +22,11 @@
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namespace Kernel {
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ResultVal<bool> Thread::WaitSynchronization() {
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ResultVal<bool> Thread::WaitSynchronization(unsigned index) {
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const bool wait = status != THREADSTATUS_DORMANT;
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if (wait) {
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AddWaitingThread(GetCurrentThread());
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WaitCurrentThread(WAITTYPE_THREADEND, this);
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WaitCurrentThread_WaitSynchronization(WAITTYPE_THREADEND, this, index);
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}
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return MakeResult<bool>(wait);
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@ -92,12 +92,12 @@ static bool CheckWaitType(const Thread* thread, WaitType type) {
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/// Check if a thread is blocking on a specified wait type with a specified handle
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static bool CheckWaitType(const Thread* thread, WaitType type, Object* wait_object) {
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auto itr = std::find(thread->wait_objects.begin(), thread->wait_objects.end(), wait_object);
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if (itr == thread->wait_objects.end()) {
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return false;
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}
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for (auto itr = thread->wait_objects.begin(); itr != thread->wait_objects.end(); ++itr) {
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if (itr->first == wait_object)
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return CheckWaitType(thread, type);
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}
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return false;
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}
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/// Check if a thread is blocking on a specified wait type with a specified handle and address
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static bool CheckWaitType(const Thread* thread, WaitType type, Object* wait_object, VAddr wait_address) {
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@ -111,7 +111,7 @@ void Thread::Stop(const char* reason) {
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ChangeReadyState(this, false);
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status = THREADSTATUS_DORMANT;
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ResumeAllWaitingThreads();
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ReleaseAllWaitingThreads();
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// Stopped threads are never waiting.
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wait_type = WAITTYPE_NONE;
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@ -135,7 +135,7 @@ static void ChangeThreadState(Thread* t, ThreadStatus new_status) {
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}
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/// Arbitrate the highest priority thread that is waiting
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Thread* ArbitrateHighestPriorityThread(Object* arbiter, u32 address) {
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Thread* ArbitrateHighestPriorityThread(WaitObject* arbiter, u32 address) {
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Thread* highest_priority_thread = nullptr;
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s32 priority = THREADPRIO_LOWEST;
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@ -155,19 +155,19 @@ Thread* ArbitrateHighestPriorityThread(Object* arbiter, u32 address) {
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// If a thread was arbitrated, resume it
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if (nullptr != highest_priority_thread) {
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highest_priority_thread->ResumeFromWait();
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highest_priority_thread->ReleaseFromWait(arbiter);
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}
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return highest_priority_thread;
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}
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/// Arbitrate all threads currently waiting
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void ArbitrateAllThreads(Object* arbiter, u32 address) {
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void ArbitrateAllThreads(WaitObject* arbiter, u32 address) {
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// Iterate through threads, find highest priority thread that is waiting to be arbitrated...
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for (auto& thread : thread_list) {
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if (CheckWaitType(thread.get(), WAITTYPE_ARB, arbiter, address))
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thread->ResumeFromWait();
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thread->ReleaseFromWait(arbiter);
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}
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}
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@ -220,19 +220,32 @@ static Thread* NextThread() {
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return next;
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}
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void WaitCurrentThread(WaitType wait_type, WaitObject* wait_object) {
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void WaitCurrentThread(WaitType wait_type) {
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Thread* thread = GetCurrentThread();
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thread->wait_type = wait_type;
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auto res = std::find(thread->wait_objects.begin(), thread->wait_objects.end(), wait_object);
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if (res == thread->wait_objects.end()) {
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thread->wait_objects.push_back(wait_object);
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}
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ChangeThreadState(thread, ThreadStatus(THREADSTATUS_WAIT | (thread->status & THREADSTATUS_SUSPEND)));
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}
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void WaitCurrentThread(WaitType wait_type, WaitObject* wait_object, VAddr wait_address) {
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WaitCurrentThread(wait_type, wait_object);
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void WaitCurrentThread_WaitSynchronization(WaitType wait_type, WaitObject* wait_object, unsigned index) {
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Thread* thread = GetCurrentThread();
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thread->wait_type = wait_type;
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bool insert_wait_object = true;
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for (auto itr = thread->wait_objects.begin(); itr < thread->wait_objects.end(); ++itr) {
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if (itr->first == wait_object) {
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insert_wait_object = false;
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break;
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}
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}
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if (insert_wait_object)
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thread->wait_objects.push_back(std::pair<SharedPtr<WaitObject>, unsigned>(wait_object, index));
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ChangeThreadState(thread, ThreadStatus(THREADSTATUS_WAIT | (thread->status & THREADSTATUS_SUSPEND)));
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}
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void WaitCurrentThread_ArbitrateAddress(WaitObject* wait_object, VAddr wait_address) {
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WaitCurrentThread_WaitSynchronization(WaitType::WAITTYPE_ARB, wait_object, 0);
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GetCurrentThread()->wait_address = wait_address;
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}
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@ -248,6 +261,9 @@ static void ThreadWakeupCallback(u64 parameter, int cycles_late) {
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return;
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}
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thread->SetReturnValue(ResultCode(ErrorDescription::Timeout, ErrorModule::OS,
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ErrorSummary::StatusChanged, ErrorLevel::Info), -1);
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thread->ResumeFromWait();
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}
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@ -262,7 +278,40 @@ void WakeThreadAfterDelay(Thread* thread, s64 nanoseconds) {
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CoreTiming::ScheduleEvent(usToCycles(microseconds), ThreadWakeupEventType, thread->GetHandle());
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}
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/// Resumes a thread from waiting by marking it as "ready"
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void Thread::ReleaseFromWait(WaitObject* wait_object) {
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if (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 wait_object
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wait_object->RemoveWaitingThread(this);
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// Find the waiting object
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auto itr = wait_objects.begin();
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for (; itr != wait_objects.end(); ++itr) {
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if (wait_object == itr->first)
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break;
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}
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unsigned index = itr->second;
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// Remove the wait_object from this thread
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if (itr != wait_objects.end())
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wait_objects.erase(itr);
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// If wait_all=false, resume the thread on a release wait_object from wait
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if (!wait_all) {
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SetReturnValue(RESULT_SUCCESS, index);
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ResumeFromWait();
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} else {
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// Otherwise, wait_all=true, only resume the thread if all wait_object's have been released
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if (wait_objects.empty()) {
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SetReturnValue(RESULT_SUCCESS, -1);
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ResumeFromWait();
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}
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}
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}
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void Thread::ResumeFromWait() {
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// Cancel any outstanding wakeup events
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CoreTiming::UnscheduleEvent(ThreadWakeupEventType, GetHandle());
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@ -271,11 +320,12 @@ void Thread::ResumeFromWait() {
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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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wait_object.first->RemoveWaitingThread(this);
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wait_objects.clear();
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wait_type = WAITTYPE_NONE;
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wait_all = false;
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if (!(status & (THREADSTATUS_WAITSUSPEND | THREADSTATUS_DORMANT | THREADSTATUS_DEAD))) {
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ChangeReadyState(this, true);
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}
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@ -342,6 +392,7 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
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thread->initial_priority = thread->current_priority = priority;
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thread->processor_id = processor_id;
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thread->wait_type = WAITTYPE_NONE;
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thread->wait_all = false;
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thread->wait_objects.clear();
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thread->wait_address = 0;
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thread->name = std::move(name);
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@ -432,6 +483,11 @@ void Reschedule() {
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}
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}
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void Thread::SetReturnValue(ResultCode return_val, s32 out_val) {
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context.cpu_registers[0] = return_val.raw;
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context.cpu_registers[1] = out_val;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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void ThreadingInit() {
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@ -70,7 +70,7 @@ public:
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inline bool IsSuspended() const { return (status & THREADSTATUS_SUSPEND) != 0; }
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inline bool IsIdle() const { return idle; }
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ResultVal<bool> WaitSynchronization() override;
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ResultVal<bool> WaitSynchronization(unsigned index) override;
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s32 GetPriority() const { return current_priority; }
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void SetPriority(s32 priority);
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@ -78,9 +78,29 @@ public:
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u32 GetThreadId() const { return thread_id; }
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void Stop(const char* reason);
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/// Resumes a thread from waiting by marking it as "ready".
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/**
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* Release an object from the thread's wait list
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* @param wait_object WaitObject to release from the thread's wait list
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*/
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void ReleaseFromWait(WaitObject* wait_object);
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/// Resumes a thread from waiting by marking it as "ready"
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void ResumeFromWait();
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/**
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* Sets the waiting mode of the thread
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* @param wait_all If true, wait for all objects, otherwise just wait for the first one
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*/
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void SetWaitAll(bool wait_all) { this->wait_all = wait_all; }
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/**
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* Sets the output values after the thread awakens from WaitSynchronization
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* @param return_val Value returned
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* @param out_val Value to set to the output parameter
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*/
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void SetReturnValue(ResultCode return_val, s32 out_val);
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Core::ThreadContext context;
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u32 thread_id;
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@ -96,7 +116,7 @@ public:
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s32 processor_id;
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WaitType wait_type;
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std::vector<SharedPtr<WaitObject>> wait_objects;
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std::vector<std::pair<SharedPtr<WaitObject>, unsigned>> wait_objects;
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VAddr wait_address;
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std::string name;
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@ -105,6 +125,8 @@ public:
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bool idle = false;
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private:
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bool wait_all = false;
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Thread() = default;
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};
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@ -115,37 +137,41 @@ SharedPtr<Thread> SetupMainThread(s32 priority, u32 stack_size);
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void Reschedule();
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/// Arbitrate the highest priority thread that is waiting
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Thread* ArbitrateHighestPriorityThread(Object* arbiter, u32 address);
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Thread* ArbitrateHighestPriorityThread(WaitObject* arbiter, u32 address);
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/// Arbitrate all threads currently waiting...
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void ArbitrateAllThreads(Object* arbiter, u32 address);
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void ArbitrateAllThreads(WaitObject* arbiter, u32 address);
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/// Gets the current thread
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Thread* GetCurrentThread();
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/**
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* Puts the current thread in the wait state for the given type
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* Waits the current thread for the given type
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* @param wait_type Type of wait
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* @param wait_object Kernel object that we are waiting on, defaults to current thread
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*/
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void WaitCurrentThread(WaitType wait_type, WaitObject* wait_object = GetCurrentThread());
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void WaitCurrentThread(WaitType wait_type);
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/**
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* Schedules an event to wake up the specified thread after the specified delay.
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* @param thread The thread to wake after the delay.
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* @param nanoseconds The time this thread will be allowed to sleep for.
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* Waits the current thread from a WaitSynchronization call
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* @param wait_type Type of wait
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* @param wait_object Kernel object that we are waiting on
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* @param index Index of calling object (for WaitSynchronizationN only)
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*/
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void WakeThreadAfterDelay(Thread* thread, s64 nanoseconds);
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void WaitCurrentThread_WaitSynchronization(WaitType wait_type, WaitObject* wait_object, unsigned index=0);
|
||||
|
||||
/**
|
||||
* Puts the current thread in the wait state for the given type
|
||||
* @param wait_type Type of wait
|
||||
* Waits the current thread from an ArbitrateAddress call
|
||||
* @param wait_object Kernel object that we are waiting on
|
||||
* @param wait_address Arbitration address used to resume from wait
|
||||
*/
|
||||
void WaitCurrentThread(WaitType wait_type, WaitObject* wait_object, VAddr wait_address);
|
||||
|
||||
void WaitCurrentThread_ArbitrateAddress(WaitObject* wait_object, VAddr wait_address);
|
||||
|
||||
/**
|
||||
* Schedules an event to wake up the specified thread after the specified delay.
|
||||
* @param handle The thread handle.
|
||||
* @param nanoseconds The time this thread will be allowed to sleep for.
|
||||
*/
|
||||
void WakeThreadAfterDelay(Thread* thread, s64 nanoseconds);
|
||||
|
||||
/**
|
||||
* Sets up the idle thread, this is a thread that is intended to never execute instructions,
|
||||
|
|
|
|||
|
|
@ -29,11 +29,11 @@ public:
|
|||
u64 initial_delay; ///< The delay until the timer fires for the first time
|
||||
u64 interval_delay; ///< The delay until the timer fires after the first time
|
||||
|
||||
ResultVal<bool> WaitSynchronization() override {
|
||||
ResultVal<bool> WaitSynchronization(unsigned index) override {
|
||||
bool wait = !signaled;
|
||||
if (wait) {
|
||||
AddWaitingThread(GetCurrentThread());
|
||||
Kernel::WaitCurrentThread(WAITTYPE_TIMER, this);
|
||||
Kernel::WaitCurrentThread_WaitSynchronization(WAITTYPE_TIMER, this, index);
|
||||
}
|
||||
return MakeResult<bool>(wait);
|
||||
}
|
||||
|
|
@ -91,7 +91,7 @@ static void TimerCallback(u64 timer_handle, int cycles_late) {
|
|||
timer->signaled = true;
|
||||
|
||||
// Resume all waiting threads
|
||||
timer->ResumeAllWaitingThreads();
|
||||
timer->ReleaseAllWaitingThreads();
|
||||
|
||||
if (timer->reset_type == RESETTYPE_ONESHOT)
|
||||
timer->signaled = false;
|
||||
|
|
|
|||
|
|
@ -133,6 +133,9 @@ static Result WaitSynchronization1(Handle handle, s64 nano_seconds) {
|
|||
if (wait.Succeeded() && *wait) {
|
||||
// Create an event to wake the thread up after the specified nanosecond delay has passed
|
||||
Kernel::WakeThreadAfterDelay(Kernel::GetCurrentThread(), nano_seconds);
|
||||
|
||||
Kernel::GetCurrentThread()->SetWaitAll(false);
|
||||
|
||||
HLE::Reschedule(__func__);
|
||||
}
|
||||
|
||||
|
|
@ -140,45 +143,65 @@ static Result WaitSynchronization1(Handle handle, s64 nano_seconds) {
|
|||
}
|
||||
|
||||
/// Wait for the given handles to synchronize, timeout after the specified nanoseconds
|
||||
static Result WaitSynchronizationN(s32* out, Handle* handles, s32 handle_count, bool wait_all,
|
||||
s64 nano_seconds) {
|
||||
static Result WaitSynchronizationN(s32* out, Handle* handles, s32 handle_count, bool wait_all, s64 nano_seconds) {
|
||||
bool wait_thread = false;
|
||||
bool wait_all_succeeded = false;
|
||||
int handle_index = 0;
|
||||
|
||||
// TODO(bunnei): Do something with nano_seconds, currently ignoring this
|
||||
bool unlock_all = true;
|
||||
bool wait_infinite = (nano_seconds == -1); // Used to wait until a thread has terminated
|
||||
|
||||
LOG_TRACE(Kernel_SVC, "called handle_count=%d, wait_all=%s, nanoseconds=%lld",
|
||||
handle_count, (wait_all ? "true" : "false"), nano_seconds);
|
||||
|
||||
// Iterate through each handle, synchronize kernel object
|
||||
for (s32 i = 0; i < handle_count; i++) {
|
||||
SharedPtr<Kernel::Object> object = Kernel::g_handle_table.GetGeneric(handles[i]);
|
||||
while (handle_index < handle_count) {
|
||||
SharedPtr<Kernel::Object> object = Kernel::g_handle_table.GetGeneric(handles[handle_index]);
|
||||
if (object == nullptr)
|
||||
return InvalidHandle(ErrorModule::Kernel).raw;
|
||||
|
||||
LOG_TRACE(Kernel_SVC, "\thandle[%d] = 0x%08X(%s:%s)", i, handles[i],
|
||||
object->GetTypeName().c_str(), object->GetName().c_str());
|
||||
ResultVal<bool> wait = object->WaitSynchronization(handle_index);
|
||||
|
||||
// TODO(yuriks): Verify how the real function behaves when an error happens here
|
||||
ResultVal<bool> wait_result = object->WaitSynchronization();
|
||||
bool wait = wait_result.Succeeded() && *wait_result;
|
||||
wait_thread = (wait.Succeeded() && *wait);
|
||||
|
||||
if (!wait && !wait_all) {
|
||||
*out = i;
|
||||
return RESULT_SUCCESS.raw;
|
||||
} else {
|
||||
unlock_all = false;
|
||||
}
|
||||
// If this object waited and we are waiting on all objects to synchronize
|
||||
if (wait_thread && wait_all) {
|
||||
// Enforce later on that this thread does not continue
|
||||
wait_all_succeeded = true;
|
||||
}
|
||||
|
||||
if (wait_all && unlock_all) {
|
||||
*out = handle_count;
|
||||
return RESULT_SUCCESS.raw;
|
||||
// If this object synchronized and we are not waiting on all objects to synchronize
|
||||
if (!wait_thread && !wait_all)
|
||||
// We're done, the thread will continue
|
||||
break;
|
||||
|
||||
handle_index++;
|
||||
}
|
||||
|
||||
// Check for next thread to schedule
|
||||
// Change the thread state to waiting if blocking on all handles...
|
||||
if (wait_thread || wait_all_succeeded) {
|
||||
// Create an event to wake the thread up after the specified nanosecond delay has passed
|
||||
Kernel::WakeThreadAfterDelay(Kernel::GetCurrentThread(), nano_seconds);
|
||||
Kernel::GetCurrentThread()->SetWaitAll(wait_all);
|
||||
|
||||
HLE::Reschedule(__func__);
|
||||
|
||||
// NOTE: output of this SVC will be set later depending on how the thread resumes
|
||||
return RESULT_DUMMY.raw;
|
||||
}
|
||||
|
||||
// Acquire objects if we did not wait...
|
||||
for (int i = 0; i < handle_count; ++i) {
|
||||
auto object = Kernel::g_handle_table.GetWaitObject(handles[i]);
|
||||
|
||||
// Acquire the object if it is not waiting...
|
||||
if (!object->ShouldWait()) {
|
||||
object->Acquire();
|
||||
|
||||
// If this was the first non-waiting object and 'wait_all' is false, don't acquire
|
||||
// any other objects
|
||||
if (!wait_all)
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// TODO(bunnei): If 'wait_all' is true, this is probably wrong. However, real hardware does
|
||||
// not seem to set it to any meaningful value.
|
||||
*out = wait_all ? 0 : handle_index;
|
||||
|
||||
return RESULT_SUCCESS.raw;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue