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-rw-r--r--src/core/hle/kernel/svc.cpp3
-rw-r--r--src/core/hle/kernel/thread.cpp21
2 files changed, 22 insertions, 2 deletions
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp
index 5db2db687..5818cc06d 100644
--- a/src/core/hle/kernel/svc.cpp
+++ b/src/core/hle/kernel/svc.cpp
@@ -706,8 +706,7 @@ static ResultCode SignalProcessWideKey(VAddr condition_variable_addr, s32 target
Handle owner_handle = static_cast<Handle>(mutex_val & Mutex::MutexOwnerMask);
auto owner = g_handle_table.Get<Thread>(owner_handle);
ASSERT(owner);
- ASSERT(thread->status != ThreadStatus::Running);
- thread->status = ThreadStatus::WaitMutex;
+ ASSERT(thread->status == ThreadStatus::WaitMutex);
thread->wakeup_callback = nullptr;
owner->AddMutexWaiter(thread);
diff --git a/src/core/hle/kernel/thread.cpp b/src/core/hle/kernel/thread.cpp
index b9022feae..40918ca81 100644
--- a/src/core/hle/kernel/thread.cpp
+++ b/src/core/hle/kernel/thread.cpp
@@ -419,12 +419,33 @@ VAddr Thread::GetCommandBufferAddress() const {
}
void Thread::AddMutexWaiter(SharedPtr<Thread> thread) {
+ if (thread->lock_owner == this) {
+ // If the thread is already waiting for this thread to release the mutex, ensure that the
+ // waiters list is consistent and return without doing anything.
+ auto itr = std::find(wait_mutex_threads.begin(), wait_mutex_threads.end(), thread);
+ ASSERT(itr != wait_mutex_threads.end());
+ return;
+ }
+
+ // A thread can't wait on two different mutexes at the same time.
+ ASSERT(thread->lock_owner == nullptr);
+
+ // Ensure that the thread is not already in the list of mutex waiters
+ auto itr = std::find(wait_mutex_threads.begin(), wait_mutex_threads.end(), thread);
+ ASSERT(itr == wait_mutex_threads.end());
+
thread->lock_owner = this;
wait_mutex_threads.emplace_back(std::move(thread));
UpdatePriority();
}
void Thread::RemoveMutexWaiter(SharedPtr<Thread> thread) {
+ ASSERT(thread->lock_owner == this);
+
+ // Ensure that the thread is in the list of mutex waiters
+ auto itr = std::find(wait_mutex_threads.begin(), wait_mutex_threads.end(), thread);
+ ASSERT(itr != wait_mutex_threads.end());
+
boost::remove_erase(wait_mutex_threads, thread);
thread->lock_owner = nullptr;
UpdatePriority();