From 9046d4a5485452802b756869b7d27056ba9ea9d7 Mon Sep 17 00:00:00 2001
From: bunnei
Date: Sun, 24 Nov 2019 20:15:51 -0500
Subject: kernel: Replace usage of boost::intrusive_ptr with std::shared_ptr
 for kernel objects. (#3154)

* kernel: Replace usage of boost::intrusive_ptr with std::shared_ptr for kernel objects.

- See https://github.com/citra-emu/citra/pull/4710 for details.
---
 src/core/hle/kernel/mutex.cpp | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

(limited to 'src/core/hle/kernel/mutex.cpp')

diff --git a/src/core/hle/kernel/mutex.cpp b/src/core/hle/kernel/mutex.cpp
index 663d0f4b6..8493d0f78 100644
--- a/src/core/hle/kernel/mutex.cpp
+++ b/src/core/hle/kernel/mutex.cpp
@@ -22,10 +22,10 @@ namespace Kernel {
 
 /// Returns the number of threads that are waiting for a mutex, and the highest priority one among
 /// those.
-static std::pair<SharedPtr<Thread>, u32> GetHighestPriorityMutexWaitingThread(
-    const SharedPtr<Thread>& current_thread, VAddr mutex_addr) {
+static std::pair<std::shared_ptr<Thread>, u32> GetHighestPriorityMutexWaitingThread(
+    const std::shared_ptr<Thread>& current_thread, VAddr mutex_addr) {
 
-    SharedPtr<Thread> highest_priority_thread;
+    std::shared_ptr<Thread> highest_priority_thread;
     u32 num_waiters = 0;
 
     for (const auto& thread : current_thread->GetMutexWaitingThreads()) {
@@ -45,14 +45,14 @@ static std::pair<SharedPtr<Thread>, u32> GetHighestPriorityMutexWaitingThread(
 }
 
 /// Update the mutex owner field of all threads waiting on the mutex to point to the new owner.
-static void TransferMutexOwnership(VAddr mutex_addr, SharedPtr<Thread> current_thread,
-                                   SharedPtr<Thread> new_owner) {
+static void TransferMutexOwnership(VAddr mutex_addr, std::shared_ptr<Thread> current_thread,
+                                   std::shared_ptr<Thread> new_owner) {
     const auto threads = current_thread->GetMutexWaitingThreads();
     for (const auto& thread : threads) {
         if (thread->GetMutexWaitAddress() != mutex_addr)
             continue;
 
-        ASSERT(thread->GetLockOwner() == current_thread);
+        ASSERT(thread->GetLockOwner() == current_thread.get());
         current_thread->RemoveMutexWaiter(thread);
         if (new_owner != thread)
             new_owner->AddMutexWaiter(thread);
@@ -70,9 +70,10 @@ ResultCode Mutex::TryAcquire(VAddr address, Handle holding_thread_handle,
     }
 
     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);
+    std::shared_ptr<Thread> current_thread =
+        SharedFrom(system.CurrentScheduler().GetCurrentThread());
+    std::shared_ptr<Thread> holding_thread = handle_table.Get<Thread>(holding_thread_handle);
+    std::shared_ptr<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.
@@ -110,7 +111,8 @@ ResultCode Mutex::Release(VAddr address) {
         return ERR_INVALID_ADDRESS;
     }
 
-    auto* const current_thread = system.CurrentScheduler().GetCurrentThread();
+    std::shared_ptr<Thread> current_thread =
+        SharedFrom(system.CurrentScheduler().GetCurrentThread());
     auto [thread, num_waiters] = GetHighestPriorityMutexWaitingThread(current_thread, address);
 
     // There are no more threads waiting for the mutex, release it completely.
-- 
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