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