Reduce the number of binders

In the APerformanceHintManager.createSession method, the binder will be sent to the peer HintManagerService.BinderService.createSession. In the HintManagerService.BinderService.createSession, it will be judged whether |mPreferredRateNanos| is equal to -1. If it is equal to -1, null will be returned. In order to prevent binder waste, Early judgment in APerformanceHintManager.createSession function

Bug: b/269397293
Change-Id: I7a1ff3d796894600d8c59dcf7a475711b5dc987a
Signed-off-by: DennySPb <[email protected]>

Author: LiangliangSui

native/android/performance_hint.cpp

@@ -120,6 +120,11 @@ APerformanceHintManager* APerformanceHintManager::create(sp<IHintManager> manage
 
 APerformanceHintSession* APerformanceHintManager::createSession(
         const int32_t* threadIds, size_t size, int64_t initialTargetWorkDurationNanos) {
+    // If |mPreferredRateNanos| is -1, it means hint session is not supported.
+    // Hence no need to attempt to create hint session.
+    if (mPreferredRateNanos == -1L) {
+        return nullptr;
+    }
     std::vector<int32_t> tids(threadIds, threadIds + size);
     sp<IHintSession> session;
     binder::Status ret =