Merge "fdtrack: add stats logging." into sc-dev (5eef4114) · Commits · e / os / android_frameworks_base

services/java/com/android/server/SystemServer.java

+20 −0

Original line number	Diff line number	Diff line
		@@ -546,6 +546,8 @@ public final class SystemServer implements Dumpable {

		new Thread(() -> {
		boolean enabled = false;
		long nextWrite = 0;

		while (true) {
		int maxFd = getMaxFd();
		if (maxFd > enableThreshold) {
		@@ -556,12 +558,30 @@ public final class SystemServer implements Dumpable {

		if (maxFd > enableThreshold && !enabled) {
		Slog.i("System", "fdtrack enable threshold reached, enabling");
		FrameworkStatsLog.write(FrameworkStatsLog.FDTRACK_EVENT_OCCURRED,
		FrameworkStatsLog.FDTRACK_EVENT_OCCURRED__EVENT__ENABLED,
		maxFd);

		System.loadLibrary("fdtrack");
		enabled = true;
		} else if (maxFd > abortThreshold) {
		Slog.i("System", "fdtrack abort threshold reached, dumping and aborting");
		FrameworkStatsLog.write(FrameworkStatsLog.FDTRACK_EVENT_OCCURRED,
		FrameworkStatsLog.FDTRACK_EVENT_OCCURRED__EVENT__ABORTING,
		maxFd);

		dumpHprof();
		fdtrackAbort();
		} else {
		// Limit this to once per hour.
		long now = SystemClock.elapsedRealtime();
		if (now > nextWrite) {
		nextWrite = now + 60 * 60 * 1000;
		FrameworkStatsLog.write(FrameworkStatsLog.FDTRACK_EVENT_OCCURRED,
		enabled ? FrameworkStatsLog.FDTRACK_EVENT_OCCURRED__EVENT__ENABLED
		: FrameworkStatsLog.FDTRACK_EVENT_OCCURRED__EVENT__DISABLED,
		maxFd);
		}
		}

		try {