| package com.android.server.location; |
| |
| /** |
| * A simple implementation of exponential backoff. |
| */ |
| class ExponentialBackOff { |
| private static final int MULTIPLIER = 2; |
| private final long mInitIntervalMillis; |
| private final long mMaxIntervalMillis; |
| private long mCurrentIntervalMillis; |
| |
| ExponentialBackOff(long initIntervalMillis, long maxIntervalMillis) { |
| mInitIntervalMillis = initIntervalMillis; |
| mMaxIntervalMillis = maxIntervalMillis; |
| |
| mCurrentIntervalMillis = mInitIntervalMillis / MULTIPLIER; |
| } |
| |
| long nextBackoffMillis() { |
| if (mCurrentIntervalMillis > mMaxIntervalMillis) { |
| return mMaxIntervalMillis; |
| } |
| |
| mCurrentIntervalMillis *= MULTIPLIER; |
| return mCurrentIntervalMillis; |
| } |
| |
| void reset() { |
| mCurrentIntervalMillis = mInitIntervalMillis / MULTIPLIER; |
| } |
| } |
| |