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Commit b6b8d1d8 authored by Suren Baghdasaryan's avatar Suren Baghdasaryan
Browse files

Subscribe ActivityManagerService to receive lmkd kill notifications 



With new LMK_SUBSCRIBE lmkd command clients need to subscribe for lmkd
notifications.

Bug: 146597855
Test: run lmkd_unit_test and verify kill notification delivery
Change-Id: Ib54647ce36426a56db3ab6f95f375a0a0ce352ce
Signed-off-by: default avatarSuren Baghdasaryan <surenb@google.com>
parent 888365c0

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

+14 −2
Original line number Diff line number Diff line
@@ -246,20 +246,27 @@ public final class ProcessList { 
            "persist.device_config.runtime_native.use_app_image_startup_cache";



    // Low Memory Killer Daemon command codes.

    // These must be kept in sync with the definitions in lmkd.c

    // These must be kept in sync with lmk_cmd definitions in lmkd.h

    //

    // LMK_TARGET <minfree> <minkillprio> ... (up to 6 pairs)

    // LMK_PROCPRIO <pid> <uid> <prio>

    // LMK_PROCREMOVE <pid>

    // LMK_PROCPURGE

    // LMK_GETKILLCNT

    // LMK_SUBSCRIBE

    // LMK_PROCKILL

    static final byte LMK_TARGET = 0;

    static final byte LMK_PROCPRIO = 1;

    static final byte LMK_PROCREMOVE = 2;

    static final byte LMK_PROCPURGE = 3;

    static final byte LMK_GETKILLCNT = 4;

    static final byte LMK_PROCKILL = 5; // Note: this is an unsolicated command

    static final byte LMK_SUBSCRIBE = 5;

    static final byte LMK_PROCKILL = 6; // Note: this is an unsolicated command



    // Low Memory Killer Daemon command codes.

    // These must be kept in sync with async_event_type definitions in lmkd.h

    //

    static final int LMK_ASYNC_EVENT_KILL = 0;



    // lmkd reconnect delay in msecs

    private static final long LMKD_RECONNECT_DELAY_MS = 1000;
@@ -1308,6 +1315,11 @@ public final class ProcessList { 
                }

                ostream.write(buf.array(), 0, buf.position());

            }

            // Subscribe for kill event notifications

            buf = ByteBuffer.allocate(4 * 2);

            buf.putInt(LMK_SUBSCRIBE);

            buf.putInt(LMK_ASYNC_EVENT_KILL);

            ostream.write(buf.array(), 0, buf.position());

        } catch (IOException ex) {

            return false;

        }