1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.internal.os; 18 19 /** 20 * Sharable zygote constants. 21 * 22 * @hide 23 */ 24 public class ZygoteConnectionConstants { 25 /** 26 * {@link android.net.LocalSocket#setSoTimeout} value for connections. 27 * Effectively, the amount of time a requestor has between the start of 28 * the request and the completed request. The select-loop mode Zygote 29 * doesn't have the logic to return to the select loop in the middle of 30 * a request, so we need to time out here to avoid being denial-of-serviced. 31 */ 32 public static final int CONNECTION_TIMEOUT_MILLIS = 1000; 33 34 /** max number of arguments that a connection can specify */ 35 public static final int MAX_ZYGOTE_ARGC = 1024; 36 37 /** 38 * Wait time for a wrapped app to report back its pid. 39 * 40 * We'll wait up to thirty seconds. This should give enough time for the fork 41 * to go through, but not to trigger the watchdog in the system server (by default 42 * sixty seconds). 43 * 44 * WARNING: This may trigger the watchdog in debug mode. However, to support 45 * wrapping on lower-end devices we do not have much choice. 46 */ 47 public static final int WRAPPED_PID_TIMEOUT_MILLIS = 30000; 48 } 49