Merge "Rate-limit how often we collect wtf() logs." into nyc-dev (cf0cc881) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/am/ActivityManagerService.java

+13 −0

Original line number	Diff line number	Diff line
		@@ -13164,6 +13164,9 @@ public final class ActivityManagerService extends ActivityManagerNative
		}
		}

		private volatile long mWtfClusterStart;
		private volatile int mWtfClusterCount;

		/**
		* Write a description of an error (crash, WTF, ANR) to the drop box.
		* @param eventType to include in the drop box tag ("crash", "wtf", etc.)
		@@ -13190,6 +13193,16 @@ public final class ActivityManagerService extends ActivityManagerNative
		// Exit early if the dropbox isn't configured to accept this report type.
		if (dbox == null \|\| !dbox.isTagEnabled(dropboxTag)) return;

		// Rate-limit how often we're willing to do the heavy lifting below to
		// collect and record logs; currently 5 logs per 10 second period.
		final long now = SystemClock.elapsedRealtime();
		if (now - mWtfClusterStart > 10 * DateUtils.SECOND_IN_MILLIS) {
		mWtfClusterStart = now;
		mWtfClusterCount = 1;
		} else {
		if (mWtfClusterCount++ >= 5) return;
		}

		final StringBuilder sb = new StringBuilder(1024);
		appendDropBoxProcessHeaders(process, processName, sb);
		if (process != null) {