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hle: kernel: k_light_lock: Implement CancelWait.

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- Fixes a crash in Megadimension Neptunia VII.
This commit is contained in:
bunnei 2021-12-05 23:36:15 -08:00
parent efb5de1c5f
commit e596fac6ee
1 changed files with 10 additions and 5 deletions
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15
src/core/hle/kernel/k_light_lock.cpp
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@ -16,10 +16,15 @@ class ThreadQueueImplForKLightLock final : public KThreadQueue {
public: public:
explicit ThreadQueueImplForKLightLock(KernelCore& kernel_) : KThreadQueue(kernel_) {} explicit ThreadQueueImplForKLightLock(KernelCore& kernel_) : KThreadQueue(kernel_) {}
virtual void CancelWait([[maybe_unused]] KThread* waiting_thread, virtual void CancelWait(KThread* waiting_thread, ResultCode wait_result,
[[maybe_unused]] ResultCode wait_result, bool cancel_timer_task) override {
[[maybe_unused]] bool cancel_timer_task) override { // Remove the thread as a waiter from its owner.
// Do nothing, waiting to acquire a light lock cannot be canceled. if (KThread* owner = waiting_thread->GetLockOwner(); owner != nullptr) {
owner->RemoveWaiter(waiting_thread);
}
// Invoke the base cancel wait handler.
KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task);
} }
}; };
@ -64,7 +69,7 @@ bool KLightLock::LockSlowPath(uintptr_t _owner, uintptr_t _cur_thread) {
} }
// Add the current thread as a waiter on the owner. // Add the current thread as a waiter on the owner.
KThread* owner_thread = reinterpret_cast<KThread*>(_owner & ~1ul); KThread* owner_thread = reinterpret_cast<KThread*>(_owner & ~1ULL);
cur_thread->SetAddressKey(reinterpret_cast<uintptr_t>(std::addressof(tag))); cur_thread->SetAddressKey(reinterpret_cast<uintptr_t>(std::addressof(tag)));
owner_thread->AddWaiter(cur_thread); owner_thread->AddWaiter(cur_thread);