Request lmkd to purge its list of pids after establishing connection (ad87d239) · Commits · e / os / android_frameworks_base

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

+35 −18

Original line number	Diff line number	Diff line
		@@ -162,9 +162,11 @@ public final class ProcessList {
		// LMK_TARGET <minfree> <minkillprio> ... (up to 6 pairs)
		// LMK_PROCPRIO <pid> <uid> <prio>
		// LMK_PROCREMOVE <pid>
		// LMK_PROCPURGE
		static final byte LMK_TARGET = 0;
		static final byte LMK_PROCPRIO = 1;
		static final byte LMK_PROCREMOVE = 2;
		static final byte LMK_PROCPURGE = 3;

		// These are the various interesting memory levels that we will give to
		// the OOM killer. Note that the OOM killer only supports 6 slots, so we
		@@ -813,6 +815,24 @@ public final class ProcessList {
		return true;
		}

		// Never call directly, use writeLmkd() instead
		private static boolean writeLmkdCommand(ByteBuffer buf) {
		try {
		sLmkdOutputStream.write(buf.array(), 0, buf.position());
		} catch (IOException ex) {
		Slog.w(TAG, "Error writing to lowmemorykiller socket");

		try {
		sLmkdSocket.close();
		} catch (IOException ex2) {
		}

		sLmkdSocket = null;
		return false;
		}
		return true;
		}

		private static void writeLmkd(ByteBuffer buf) {

		for (int i = 0; i < 3; i++) {
		@@ -824,20 +844,17 @@ public final class ProcessList {
		}
		continue;
		}
		}

		try {
		sLmkdOutputStream.write(buf.array(), 0, buf.position());
		return;
		} catch (IOException ex) {
		Slog.w(TAG, "Error writing to lowmemorykiller socket");

		try {
		sLmkdSocket.close();
		} catch (IOException ex2) {
		// Purge any previously registered pids
		ByteBuffer purge_buf = ByteBuffer.allocate(4);
		purge_buf.putInt(LMK_PROCPURGE);
		if (writeLmkdCommand(purge_buf) == false) {
		// Write failed, skip the rest and retry
		continue;
		}

		sLmkdSocket = null;
		}
		if (writeLmkdCommand(buf)) {
		return;
		}
		}
		}