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-rw-r--r--src/core/hle/kernel/mutex.cpp120
-rw-r--r--src/core/hle/kernel/mutex.h82
-rw-r--r--src/core/hle/kernel/thread.cpp3
-rw-r--r--src/core/hle/kernel/thread.h7
4 files changed, 3 insertions, 209 deletions
diff --git a/src/core/hle/kernel/mutex.cpp b/src/core/hle/kernel/mutex.cpp
index 50a9a0805..5cc0bd266 100644
--- a/src/core/hle/kernel/mutex.cpp
+++ b/src/core/hle/kernel/mutex.cpp
@@ -40,126 +40,6 @@ static std::pair<SharedPtr<Thread>, u32> GetHighestPriorityMutexWaitingThread(VA
return {highest_priority_thread, num_waiters};
}
-void ReleaseThreadMutexes(Thread* thread) {
- for (auto& mtx : thread->held_mutexes) {
- mtx->SetHasWaiters(false);
- mtx->SetHoldingThread(nullptr);
- mtx->WakeupAllWaitingThreads();
- }
- thread->held_mutexes.clear();
-}
-
-Mutex::Mutex() {}
-Mutex::~Mutex() {}
-
-SharedPtr<Mutex> Mutex::Create(SharedPtr<Kernel::Thread> holding_thread, VAddr guest_addr,
- std::string name) {
- SharedPtr<Mutex> mutex(new Mutex);
-
- mutex->guest_addr = guest_addr;
- mutex->name = std::move(name);
-
- // If mutex was initialized with a holding thread, acquire it by the holding thread
- if (holding_thread) {
- mutex->Acquire(holding_thread.get());
- }
-
- // Mutexes are referenced by guest address, so track this in the kernel
- g_object_address_table.Insert(guest_addr, mutex);
-
- return mutex;
-}
-
-bool Mutex::ShouldWait(Thread* thread) const {
- auto holding_thread = GetHoldingThread();
- return holding_thread != nullptr && thread != holding_thread;
-}
-
-void Mutex::Acquire(Thread* thread) {
- ASSERT_MSG(!ShouldWait(thread), "object unavailable!");
-
- priority = thread->current_priority;
- thread->held_mutexes.insert(this);
- SetHoldingThread(thread);
- thread->UpdatePriority();
- Core::System::GetInstance().PrepareReschedule();
-}
-
-ResultCode Mutex::Release(Thread* thread) {
- auto holding_thread = GetHoldingThread();
- ASSERT(holding_thread);
-
- // We can only release the mutex if it's held by the calling thread.
- ASSERT(thread == holding_thread);
-
- holding_thread->held_mutexes.erase(this);
- holding_thread->UpdatePriority();
- SetHoldingThread(nullptr);
- SetHasWaiters(!GetWaitingThreads().empty());
- WakeupAllWaitingThreads();
- Core::System::GetInstance().PrepareReschedule();
-
- return RESULT_SUCCESS;
-}
-
-void Mutex::AddWaitingThread(SharedPtr<Thread> thread) {
- WaitObject::AddWaitingThread(thread);
- thread->pending_mutexes.insert(this);
- SetHasWaiters(true);
- UpdatePriority();
-}
-
-void Mutex::RemoveWaitingThread(Thread* thread) {
- WaitObject::RemoveWaitingThread(thread);
- thread->pending_mutexes.erase(this);
- if (!GetHasWaiters())
- SetHasWaiters(!GetWaitingThreads().empty());
- UpdatePriority();
-}
-
-void Mutex::UpdatePriority() {
- if (!GetHoldingThread())
- return;
-
- u32 best_priority = THREADPRIO_LOWEST;
- for (auto& waiter : GetWaitingThreads()) {
- if (waiter->current_priority < best_priority)
- best_priority = waiter->current_priority;
- }
-
- if (best_priority != priority) {
- priority = best_priority;
- GetHoldingThread()->UpdatePriority();
- }
-}
-
-Handle Mutex::GetOwnerHandle() const {
- GuestState guest_state{Memory::Read32(guest_addr)};
- return guest_state.holding_thread_handle;
-}
-
-SharedPtr<Thread> Mutex::GetHoldingThread() const {
- GuestState guest_state{Memory::Read32(guest_addr)};
- return g_handle_table.Get<Thread>(guest_state.holding_thread_handle);
-}
-
-void Mutex::SetHoldingThread(SharedPtr<Thread> thread) {
- GuestState guest_state{Memory::Read32(guest_addr)};
- guest_state.holding_thread_handle.Assign(thread ? thread->guest_handle : 0);
- Memory::Write32(guest_addr, guest_state.raw);
-}
-
-bool Mutex::GetHasWaiters() const {
- GuestState guest_state{Memory::Read32(guest_addr)};
- return guest_state.has_waiters != 0;
-}
-
-void Mutex::SetHasWaiters(bool has_waiters) {
- GuestState guest_state{Memory::Read32(guest_addr)};
- guest_state.has_waiters.Assign(has_waiters ? 1 : 0);
- Memory::Write32(guest_addr, guest_state.raw);
-}
-
ResultCode Mutex::TryAcquire(VAddr address, Handle holding_thread_handle,
Handle requesting_thread_handle) {
// The mutex address must be 4-byte aligned
diff --git a/src/core/hle/kernel/mutex.h b/src/core/hle/kernel/mutex.h
index 310923087..3117e7c70 100644
--- a/src/core/hle/kernel/mutex.h
+++ b/src/core/hle/kernel/mutex.h
@@ -15,68 +15,8 @@ namespace Kernel {
class Thread;
-class Mutex final : public WaitObject {
+class Mutex final {
public:
- /**
- * Creates a mutex.
- * @param holding_thread Specifies a thread already holding the mutex. If not nullptr, this
- * thread will acquire the mutex.
- * @param guest_addr Address of the object tracking the mutex in guest memory. If specified,
- * this mutex will update the guest object when its state changes.
- * @param name Optional name of mutex
- * @return Pointer to new Mutex object
- */
- static SharedPtr<Mutex> Create(SharedPtr<Kernel::Thread> holding_thread, VAddr guest_addr = 0,
- std::string name = "Unknown");
-
- std::string GetTypeName() const override {
- return "Mutex";
- }
- std::string GetName() const override {
- return name;
- }
-
- static const HandleType HANDLE_TYPE = HandleType::Mutex;
- HandleType GetHandleType() const override {
- return HANDLE_TYPE;
- }
-
- u32 priority; ///< The priority of the mutex, used for priority inheritance.
- std::string name; ///< Name of mutex (optional)
- VAddr guest_addr; ///< Address of the guest mutex value
-
- /**
- * Elevate the mutex priority to the best priority
- * among the priorities of all its waiting threads.
- */
- void UpdatePriority();
-
- bool ShouldWait(Thread* thread) const override;
- void Acquire(Thread* thread) override;
-
- void AddWaitingThread(SharedPtr<Thread> thread) override;
- void RemoveWaitingThread(Thread* thread) override;
-
- /**
- * Attempts to release the mutex from the specified thread.
- * @param thread Thread that wants to release the mutex.
- * @returns The result code of the operation.
- */
- ResultCode Release(Thread* thread);
-
- /// Gets the handle to the holding process stored in the guest state.
- Handle GetOwnerHandle() const;
-
- /// Gets the Thread pointed to by the owner handle
- SharedPtr<Thread> GetHoldingThread() const;
- /// Sets the holding process handle in the guest state.
- void SetHoldingThread(SharedPtr<Thread> thread);
-
- /// Returns the has_waiters bit in the guest state.
- bool GetHasWaiters() const;
- /// Sets the has_waiters bit in the guest state.
- void SetHasWaiters(bool has_waiters);
-
/// Flag that indicates that a mutex still has threads waiting for it.
static constexpr u32 MutexHasWaitersFlag = 0x40000000;
/// Mask of the bits in a mutex address value that contain the mutex owner.
@@ -90,24 +30,8 @@ public:
static ResultCode Release(VAddr address);
private:
- Mutex();
- ~Mutex() override;
-
- /// Object in guest memory used to track the mutex state
- union GuestState {
- u32_le raw;
- /// Handle of the thread that currently holds the mutex, 0 if available
- BitField<0, 30, u32_le> holding_thread_handle;
- /// 1 when there are threads waiting for this mutex, otherwise 0
- BitField<30, 1, u32_le> has_waiters;
- };
- static_assert(sizeof(GuestState) == 4, "GuestState size is incorrect");
+ Mutex() = default;
+ ~Mutex() = default;
};
-/**
- * Releases all the mutexes held by the specified thread
- * @param thread Thread that is holding the mutexes
- */
-void ReleaseThreadMutexes(Thread* thread);
-
} // namespace Kernel
diff --git a/src/core/hle/kernel/thread.cpp b/src/core/hle/kernel/thread.cpp
index 0a0ad7cfb..8093c4496 100644
--- a/src/core/hle/kernel/thread.cpp
+++ b/src/core/hle/kernel/thread.cpp
@@ -77,9 +77,6 @@ void Thread::Stop() {
}
wait_objects.clear();
- // Release all the mutexes that this thread holds
- ReleaseThreadMutexes(this);
-
// Mark the TLS slot in the thread's page as free.
u64 tls_page = (tls_address - Memory::TLS_AREA_VADDR) / Memory::PAGE_SIZE;
u64 tls_slot =
diff --git a/src/core/hle/kernel/thread.h b/src/core/hle/kernel/thread.h
index a3a6e6a64..74d5904b8 100644
--- a/src/core/hle/kernel/thread.h
+++ b/src/core/hle/kernel/thread.h
@@ -55,7 +55,6 @@ enum class ThreadWakeupReason {
namespace Kernel {
-class Mutex;
class Process;
class Thread final : public WaitObject {
@@ -206,12 +205,6 @@ public:
VAddr tls_address; ///< Virtual address of the Thread Local Storage of the thread
- /// Mutexes currently held by this thread, which will be released when it exits.
- boost::container::flat_set<SharedPtr<Mutex>> held_mutexes;
-
- /// Mutexes that this thread is currently waiting for.
- boost::container::flat_set<SharedPtr<Mutex>> pending_mutexes;
-
SharedPtr<Process> owner_process; ///< Process that owns this thread
/// Objects that the thread is waiting on, in the same order as they were
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-12 00:46:14 +0200