Avoid unnecessary system calls (d8bb71e0) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/ThreadPriorityBooster.java

+11 −7

Original line number	Diff line number	Diff line
		@@ -43,9 +43,9 @@ public class ThreadPriorityBooster {

		public void boost() {
		final int tid = myTid();
		final int prevPriority = getThreadPriority(tid);
		final PriorityState state = mThreadState.get();
		if (state.regionCounter == 0) {
		final int prevPriority = getThreadPriority(tid);
		state.prevPriority = prevPriority;
		if (prevPriority > mBoostToPriority) {
		setThreadPriority(tid, mBoostToPriority);
		@@ -60,11 +60,13 @@ public class ThreadPriorityBooster {
		public void reset() {
		final PriorityState state = mThreadState.get();
		state.regionCounter--;
		if (state.regionCounter == 0) {
		final int currentPriority = getThreadPriority(myTid());
		if (state.regionCounter == 0 && state.prevPriority != currentPriority) {
		if (state.prevPriority != currentPriority) {
		setThreadPriority(myTid(), state.prevPriority);
		}
		}
		}

		/**
		* Updates the priority we boost the threads to, and updates the current thread's priority if
		@@ -77,11 +79,13 @@ public class ThreadPriorityBooster {
		mBoostToPriority = priority;
		final PriorityState state = mThreadState.get();
		final int tid = myTid();
		if (state.regionCounter != 0) {
		final int prevPriority = getThreadPriority(tid);
		if (state.regionCounter != 0 && prevPriority != priority) {
		if (prevPriority != priority) {
		setThreadPriority(tid, priority);
		}
		}
		}

		private static class PriorityState {