Merge "Add histogram metric for digest latency" (fe2a1203) · Commits · e / os / android_frameworks_base

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

+7 −1

Original line number	Diff line number	Diff line
		@@ -81,6 +81,7 @@ import android.util.apk.ApkSignatureVerifier;
		import android.util.apk.ApkSigningBlockUtils;

		import com.android.internal.annotations.VisibleForTesting;
		import com.android.internal.expresslog.Histogram;
		import com.android.internal.os.IBinaryTransparencyService;
		import com.android.internal.util.FrameworkStatsLog;
		import com.android.server.pm.ApexManager;
		@@ -141,6 +142,10 @@ public class BinaryTransparencyService extends SystemService {

		private static final boolean DEBUG = false; // toggle this for local debug

		private static final Histogram digestAllPackagesLatency = new Histogram(
		"binary_transparency.value_digest_all_packages_latency_uniform",
		new Histogram.UniformOptions(50, 0, 500));

		private final Context mContext;
		private String mVbmetaDigest;
		// the system time (in ms) the last measurement was taken
		@@ -350,8 +355,9 @@ public class BinaryTransparencyService extends SystemService {
		writeAppInfoToLog(appInfo);
		}
		}
		if (DEBUG) {
		long timeSpentMeasuring = System.currentTimeMillis() - currentTimeMs;
		digestAllPackagesLatency.logSample(timeSpentMeasuring);
		if (DEBUG) {
		Slog.d(TAG, "Measured " + packagesMeasured.size()
		+ " packages altogether in " + timeSpentMeasuring + "ms");
		}