Merge "Change PerfettoTrigger throttling to be per trigger name"

import android.os.SystemClock;

import android.util.Log;

import android.util.SparseLongArray;

import java.io.IOException;

public class PerfettoTrigger {

    private static final String TAG = "PerfettoTrigger";

    private static final String TRIGGER_COMMAND = "/system/bin/trigger_perfetto";

    private static final long THROTTLE_MILLIS = 60000;

    private static volatile long sLastTriggerTime = -THROTTLE_MILLIS;

    private static final long THROTTLE_MILLIS = 300000;

    private static final SparseLongArray sLastInvocationPerTrigger = new SparseLongArray(100);

    private static final Object sLock = new Object();

    /**

     * @param triggerName The name of the trigger. Must match the value defined in the AOT

    public static void trigger(String triggerName) {

        // Trace triggering has a non-negligible cost (fork+exec).

        // To mitigate potential excessive triggering by the API client we ignore calls that happen

        // too quickl after the most recent trigger.

        long sinceLastTrigger = SystemClock.elapsedRealtime() - sLastTriggerTime;

        // too quickly after the most recent trigger.

        synchronized (sLock) {

            long lastTrigger = sLastInvocationPerTrigger.get(triggerName.hashCode());

            long sinceLastTrigger = SystemClock.elapsedRealtime() - lastTrigger;

            if (sinceLastTrigger < THROTTLE_MILLIS) {

            Log.v(TAG, "Not triggering " + triggerName + " - not enough time since last trigger");

                Log.v(TAG, "Not triggering " + triggerName

                        + " - not enough time since last trigger");

                return;

            }

            sLastInvocationPerTrigger.put(triggerName.hashCode(), SystemClock.elapsedRealtime());

        }

        try {

            ProcessBuilder pb = new ProcessBuilder(TRIGGER_COMMAND, triggerName);

            Log.v(TAG, "Triggering " + String.join(" ", pb.command()));

            pb.start();

            sLastTriggerTime = SystemClock.elapsedRealtime();

        } catch (IOException e) {

            Log.w(TAG, "Failed to trigger " + triggerName, e);

        }