Merge "BroadcastQueue: Initial deterministic perf test." into udc-dev

        verify(mAms, never()).enqueueOomAdjTargetLocked(any());

    }

    /**

     * Confirm how many times a pathological broadcast pattern results in OOM

     * adjusts; watches for performance regressions.

     */

    @Test

    public void testOomAdjust_TriggerCount() throws Exception {

        final ProcessRecord callerApp = makeActiveProcessRecord(PACKAGE_RED);

        // Send 8 broadcasts, 4 receivers in the first process,

        // and 2 alternating in each of the remaining processes

        synchronized (mAms) {

            for (int i = 0; i < 8; i++) {

                final Intent intent = new Intent(Intent.ACTION_TIMEZONE_CHANGED);

                mQueue.enqueueBroadcastLocked(makeBroadcastRecord(intent, callerApp,

                        List.of(makeManifestReceiver(PACKAGE_GREEN, CLASS_GREEN),

                                makeManifestReceiver(PACKAGE_GREEN, CLASS_GREEN),

                                makeManifestReceiver(PACKAGE_GREEN, CLASS_GREEN),

                                makeManifestReceiver(PACKAGE_GREEN, CLASS_GREEN),

                                makeManifestReceiver(PACKAGE_BLUE, CLASS_BLUE),

                                makeManifestReceiver(PACKAGE_YELLOW, CLASS_YELLOW),

                                makeManifestReceiver(PACKAGE_BLUE, CLASS_BLUE),

                                makeManifestReceiver(PACKAGE_YELLOW, CLASS_YELLOW))));

            }

        }

        waitForIdle();

        final int expectedTimes;

        switch (mImpl) {

            // Original stack requested for every single receiver; yikes

            case DEFAULT: expectedTimes = 64; break;

            // Modern stack requests once each time we promote a process to

            // running; we promote "green" twice, and "blue" and "yellow" once

            case MODERN: expectedTimes = 4; break;

            default: throw new UnsupportedOperationException();

        }

        verify(mAms, times(expectedTimes))

                .updateOomAdjPendingTargetsLocked(eq(OOM_ADJ_REASON_START_RECEIVER));

    }

    /**

     * Verify that expected events are triggered when a broadcast is finished.

     */