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-rw-r--r--src/core/hle/kernel/mutex.cpp35
1 files changed, 22 insertions, 13 deletions
diff --git a/src/core/hle/kernel/mutex.cpp b/src/core/hle/kernel/mutex.cpp
index 0743670ad..98e87313b 100644
--- a/src/core/hle/kernel/mutex.cpp
+++ b/src/core/hle/kernel/mutex.cpp
@@ -2,7 +2,6 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
-#include <map>
#include <utility>
#include <vector>
@@ -10,8 +9,11 @@
#include "core/core.h"
#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/handle_table.h"
+#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/mutex.h"
#include "core/hle/kernel/object.h"
+#include "core/hle/kernel/process.h"
+#include "core/hle/kernel/scheduler.h"
#include "core/hle/kernel/thread.h"
#include "core/hle/result.h"
#include "core/memory.h"
@@ -57,41 +59,47 @@ static void TransferMutexOwnership(VAddr mutex_addr, SharedPtr<Thread> current_t
}
}
-ResultCode Mutex::TryAcquire(HandleTable& handle_table, VAddr address, Handle holding_thread_handle,
+Mutex::Mutex(Core::System& system) : system{system} {}
+Mutex::~Mutex() = default;
+
+ResultCode Mutex::TryAcquire(VAddr address, Handle holding_thread_handle,
Handle requesting_thread_handle) {
// The mutex address must be 4-byte aligned
if ((address % sizeof(u32)) != 0) {
return ERR_INVALID_ADDRESS;
}
+ const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
+ Thread* const current_thread = system.CurrentScheduler().GetCurrentThread();
SharedPtr<Thread> holding_thread = handle_table.Get<Thread>(holding_thread_handle);
SharedPtr<Thread> requesting_thread = handle_table.Get<Thread>(requesting_thread_handle);
// TODO(Subv): It is currently unknown if it is possible to lock a mutex in behalf of another
// thread.
- ASSERT(requesting_thread == GetCurrentThread());
+ ASSERT(requesting_thread == current_thread);
- u32 addr_value = Memory::Read32(address);
+ const u32 addr_value = Memory::Read32(address);
// If the mutex isn't being held, just return success.
if (addr_value != (holding_thread_handle | Mutex::MutexHasWaitersFlag)) {
return RESULT_SUCCESS;
}
- if (holding_thread == nullptr)
+ if (holding_thread == nullptr) {
return ERR_INVALID_HANDLE;
+ }
// Wait until the mutex is released
- GetCurrentThread()->SetMutexWaitAddress(address);
- GetCurrentThread()->SetWaitHandle(requesting_thread_handle);
+ current_thread->SetMutexWaitAddress(address);
+ current_thread->SetWaitHandle(requesting_thread_handle);
- GetCurrentThread()->SetStatus(ThreadStatus::WaitMutex);
- GetCurrentThread()->InvalidateWakeupCallback();
+ current_thread->SetStatus(ThreadStatus::WaitMutex);
+ current_thread->InvalidateWakeupCallback();
// Update the lock holder thread's priority to prevent priority inversion.
- holding_thread->AddMutexWaiter(GetCurrentThread());
+ holding_thread->AddMutexWaiter(current_thread);
- Core::System::GetInstance().PrepareReschedule();
+ system.PrepareReschedule();
return RESULT_SUCCESS;
}
@@ -102,7 +110,8 @@ ResultCode Mutex::Release(VAddr address) {
return ERR_INVALID_ADDRESS;
}
- auto [thread, num_waiters] = GetHighestPriorityMutexWaitingThread(GetCurrentThread(), address);
+ auto* const current_thread = system.CurrentScheduler().GetCurrentThread();
+ auto [thread, num_waiters] = GetHighestPriorityMutexWaitingThread(current_thread, address);
// There are no more threads waiting for the mutex, release it completely.
if (thread == nullptr) {
@@ -111,7 +120,7 @@ ResultCode Mutex::Release(VAddr address) {
}
// Transfer the ownership of the mutex from the previous owner to the new one.
- TransferMutexOwnership(address, GetCurrentThread(), thread);
+ TransferMutexOwnership(address, current_thread, thread);
u32 mutex_value = thread->GetWaitHandle();