blast: Send transaction callback
Send transaction callback to client via the
TransactionCompletedListener.
Test: Transaction_test
Bug: 80477568
Change-Id: Iac98780b1357b9cc54b93cc3c848013b28fab441
diff --git a/services/surfaceflinger/TransactionCompletedThread.h b/services/surfaceflinger/TransactionCompletedThread.h
new file mode 100644
index 0000000..39cf7e8
--- /dev/null
+++ b/services/surfaceflinger/TransactionCompletedThread.h
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <condition_variable>
+#include <deque>
+#include <mutex>
+#include <thread>
+#include <unordered_map>
+
+#include <android-base/thread_annotations.h>
+
+#include <binder/IBinder.h>
+#include <gui/ITransactionCompletedListener.h>
+
+namespace android {
+
+class CallbackHandle : public RefBase {
+public:
+ CallbackHandle(const sp<ITransactionCompletedListener>& transactionListener,
+ const std::vector<CallbackId>& ids, const sp<IBinder>& sc);
+
+ sp<ITransactionCompletedListener> listener;
+ std::vector<CallbackId> callbackIds;
+ sp<IBinder> surfaceControl;
+};
+
+class TransactionCompletedThread {
+public:
+ ~TransactionCompletedThread();
+
+ void run();
+
+ // Informs the TransactionCompletedThread that there is a Transaction with a CallbackHandle
+ // that needs to be latched and presented this frame. This function should be called once the
+ // layer has received the CallbackHandle so the TransactionCompletedThread knows not to send
+ // a callback for that Listener/Transaction pair until that CallbackHandle has been latched and
+ // presented.
+ void registerPendingLatchedCallbackHandle(const sp<CallbackHandle>& handle);
+ // Notifies the TransactionCompletedThread that a pending CallbackHandle has been latched.
+ void addLatchedCallbackHandles(const std::deque<sp<CallbackHandle>>& handles);
+
+ // Adds the Transaction CallbackHandle from a layer that does not need to be relatched and
+ // presented this frame.
+ void addUnlatchedCallbackHandle(const sp<CallbackHandle>& handle);
+
+ void sendCallbacks();
+
+private:
+ void threadMain();
+
+ void addCallbackHandle(const sp<CallbackHandle>& handle) REQUIRES(mMutex);
+
+ class ThreadDeathRecipient : public IBinder::DeathRecipient {
+ public:
+ // This function is a no-op. isBinderAlive needs a linked DeathRecipient to work.
+ // Death recipients needs a binderDied function.
+ //
+ // (isBinderAlive checks if BpBinder's mAlive is 0. mAlive is only set to 0 in sendObituary.
+ // sendObituary is only called if linkToDeath was called with a DeathRecipient.)
+ void binderDied(const wp<IBinder>& /*who*/) override {}
+ };
+ sp<ThreadDeathRecipient> mDeathRecipient;
+
+ struct IBinderHash {
+ std::size_t operator()(const sp<IBinder>& strongPointer) const {
+ return std::hash<IBinder*>{}(strongPointer.get());
+ }
+ };
+
+ std::thread mThread;
+
+ std::mutex mMutex;
+ std::condition_variable_any mConditionVariable;
+
+ std::unordered_map<
+ sp<IBinder /*listener*/>,
+ std::unordered_map<std::vector<CallbackId>, uint32_t /*count*/, CallbackIdsHash>,
+ IBinderHash>
+ mPendingTransactions GUARDED_BY(mMutex);
+ std::unordered_map<sp<IBinder /*listener*/>, ListenerStats, IBinderHash> mListenerStats
+ GUARDED_BY(mMutex);
+
+ bool mRunning GUARDED_BY(mMutex) = false;
+ bool mKeepRunning GUARDED_BY(mMutex) = true;
+};
+
+} // namespace android