838 lines
29 KiB
Java
838 lines
29 KiB
Java
/*
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* Copyright (C) 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.os;
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import android.net.LocalSocketAddress;
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import android.net.LocalSocket;
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import android.util.Log;
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import dalvik.system.Zygote;
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import java.io.BufferedWriter;
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import java.io.DataInputStream;
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import java.io.IOException;
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import java.io.OutputStreamWriter;
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import java.util.ArrayList;
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/*package*/ class ZygoteStartFailedEx extends Exception {
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/**
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* Something prevented the zygote process startup from happening normally
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*/
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ZygoteStartFailedEx() {};
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ZygoteStartFailedEx(String s) {super(s);}
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ZygoteStartFailedEx(Throwable cause) {super(cause);}
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}
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/**
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* Tools for managing OS processes.
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*/
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public class Process {
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private static final String LOG_TAG = "Process";
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private static final String ZYGOTE_SOCKET = "zygote";
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/**
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* Name of a process for running the platform's media services.
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* {@hide}
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*/
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public static final String ANDROID_SHARED_MEDIA = "com.android.process.media";
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/**
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* Name of the process that Google content providers can share.
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* {@hide}
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*/
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public static final String GOOGLE_SHARED_APP_CONTENT = "com.google.process.content";
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/**
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* Defines the UID/GID under which system code runs.
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*/
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public static final int SYSTEM_UID = 1000;
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/**
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* Defines the UID/GID under which the telephony code runs.
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*/
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public static final int PHONE_UID = 1001;
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/**
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* Defines the UID/GID for the user shell.
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* @hide
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*/
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public static final int SHELL_UID = 2000;
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/**
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* Defines the UID/GID for the log group.
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* @hide
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*/
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public static final int LOG_UID = 1007;
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/**
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* Defines the UID/GID for the WIFI supplicant process.
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* @hide
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*/
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public static final int WIFI_UID = 1010;
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/**
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* Defines the UID/GID for the FM supplicant process.
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* @hide
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*/
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public static final int FM_RADIO_UID = 1019;
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/**
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* Defines the UID/GID for the NFC service process.
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* @hide
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*/
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public static final int NFC_UID = 1025;
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/**
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* Defines the start of a range of UIDs (and GIDs), going from this
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* number to {@link #LAST_APPLICATION_UID} that are reserved for assigning
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* to applications.
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*/
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public static final int FIRST_APPLICATION_UID = 10000;
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/**
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* Last of application-specific UIDs starting at
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* {@link #FIRST_APPLICATION_UID}.
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*/
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public static final int LAST_APPLICATION_UID = 99999;
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/**
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* Defines a secondary group id for access to the bluetooth hardware.
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*/
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public static final int BLUETOOTH_GID = 2000;
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/**
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* Standard priority of application threads.
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* Use with {@link #setThreadPriority(int)} and
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* {@link #setThreadPriority(int, int)}, <b>not</b> with the normal
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* {@link java.lang.Thread} class.
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*/
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public static final int THREAD_PRIORITY_DEFAULT = 0;
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/*
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* ***************************************
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* ** Keep in sync with utils/threads.h **
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* ***************************************
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*/
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/**
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* Lowest available thread priority. Only for those who really, really
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* don't want to run if anything else is happening.
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* Use with {@link #setThreadPriority(int)} and
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* {@link #setThreadPriority(int, int)}, <b>not</b> with the normal
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* {@link java.lang.Thread} class.
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*/
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public static final int THREAD_PRIORITY_LOWEST = 19;
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/**
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* Standard priority background threads. This gives your thread a slightly
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* lower than normal priority, so that it will have less chance of impacting
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* the responsiveness of the user interface.
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* Use with {@link #setThreadPriority(int)} and
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* {@link #setThreadPriority(int, int)}, <b>not</b> with the normal
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* {@link java.lang.Thread} class.
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*/
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public static final int THREAD_PRIORITY_BACKGROUND = 10;
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/**
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* Standard priority of threads that are currently running a user interface
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* that the user is interacting with. Applications can not normally
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* change to this priority; the system will automatically adjust your
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* application threads as the user moves through the UI.
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* Use with {@link #setThreadPriority(int)} and
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* {@link #setThreadPriority(int, int)}, <b>not</b> with the normal
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* {@link java.lang.Thread} class.
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*/
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public static final int THREAD_PRIORITY_FOREGROUND = -2;
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/**
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* Standard priority of system display threads, involved in updating
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* the user interface. Applications can not
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* normally change to this priority.
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* Use with {@link #setThreadPriority(int)} and
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* {@link #setThreadPriority(int, int)}, <b>not</b> with the normal
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* {@link java.lang.Thread} class.
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*/
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public static final int THREAD_PRIORITY_DISPLAY = -4;
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/**
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* Standard priority of the most important display threads, for compositing
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* the screen and retrieving input events. Applications can not normally
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* change to this priority.
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* Use with {@link #setThreadPriority(int)} and
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* {@link #setThreadPriority(int, int)}, <b>not</b> with the normal
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* {@link java.lang.Thread} class.
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*/
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public static final int THREAD_PRIORITY_URGENT_DISPLAY = -8;
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/**
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* Standard priority of audio threads. Applications can not normally
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* change to this priority.
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* Use with {@link #setThreadPriority(int)} and
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* {@link #setThreadPriority(int, int)}, <b>not</b> with the normal
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* {@link java.lang.Thread} class.
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*/
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public static final int THREAD_PRIORITY_AUDIO = -16;
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/**
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* Standard priority of the most important audio threads.
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* Applications can not normally change to this priority.
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* Use with {@link #setThreadPriority(int)} and
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* {@link #setThreadPriority(int, int)}, <b>not</b> with the normal
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* {@link java.lang.Thread} class.
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*/
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public static final int THREAD_PRIORITY_URGENT_AUDIO = -19;
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/**
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* Minimum increment to make a priority more favorable.
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*/
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public static final int THREAD_PRIORITY_MORE_FAVORABLE = -1;
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/**
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* Minimum increment to make a priority less favorable.
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*/
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public static final int THREAD_PRIORITY_LESS_FAVORABLE = +1;
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/**
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* Default thread group - gets a 'normal' share of the CPU
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* @hide
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*/
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public static final int THREAD_GROUP_DEFAULT = 0;
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/**
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* Background non-interactive thread group - All threads in
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* this group are scheduled with a reduced share of the CPU.
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* @hide
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*/
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public static final int THREAD_GROUP_BG_NONINTERACTIVE = 1;
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/**
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* Foreground 'boost' thread group - All threads in
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* this group are scheduled with an increased share of the CPU
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* @hide
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**/
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public static final int THREAD_GROUP_FG_BOOST = 2;
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public static final int SIGNAL_QUIT = 3;
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public static final int SIGNAL_KILL = 9;
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public static final int SIGNAL_USR1 = 10;
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// State for communicating with zygote process
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static LocalSocket sZygoteSocket;
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static DataInputStream sZygoteInputStream;
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static BufferedWriter sZygoteWriter;
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/** true if previous zygote open failed */
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static boolean sPreviousZygoteOpenFailed;
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/**
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* Start a new process.
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*
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* <p>If processes are enabled, a new process is created and the
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* static main() function of a <var>processClass</var> is executed there.
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* The process will continue running after this function returns.
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*
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* <p>If processes are not enabled, a new thread in the caller's
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* process is created and main() of <var>processClass</var> called there.
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*
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* <p>The niceName parameter, if not an empty string, is a custom name to
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* give to the process instead of using processClass. This allows you to
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* make easily identifyable processes even if you are using the same base
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* <var>processClass</var> to start them.
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*
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* @param processClass The class to use as the process's main entry
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* point.
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* @param niceName A more readable name to use for the process.
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* @param uid The user-id under which the process will run.
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* @param gid The group-id under which the process will run.
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* @param gids Additional group-ids associated with the process.
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* @param enableDebugger True if debugging should be enabled for this process.
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* @param zygoteArgs Additional arguments to supply to the zygote process.
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*
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* @return int If > 0 the pid of the new process; if 0 the process is
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* being emulated by a thread
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* @throws RuntimeException on fatal start failure
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*
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* {@hide}
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*/
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public static final int start(final String processClass,
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final String niceName,
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int uid, int gid, int[] gids,
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int debugFlags,
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String[] zygoteArgs)
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{
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if (supportsProcesses()) {
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try {
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return startViaZygote(processClass, niceName, uid, gid, gids,
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debugFlags, zygoteArgs);
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} catch (ZygoteStartFailedEx ex) {
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Log.e(LOG_TAG,
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"Starting VM process through Zygote failed");
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throw new RuntimeException(
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"Starting VM process through Zygote failed", ex);
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}
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} else {
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// Running in single-process mode
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Runnable runnable = new Runnable() {
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public void run() {
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Process.invokeStaticMain(processClass);
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}
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};
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// Thread constructors must not be called with null names (see spec).
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if (niceName != null) {
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new Thread(runnable, niceName).start();
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} else {
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new Thread(runnable).start();
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}
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return 0;
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}
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}
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/**
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* Start a new process. Don't supply a custom nice name.
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* {@hide}
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*/
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public static final int start(String processClass, int uid, int gid,
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int[] gids, int debugFlags, String[] zygoteArgs) {
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return start(processClass, "", uid, gid, gids,
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debugFlags, zygoteArgs);
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}
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private static void invokeStaticMain(String className) {
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Class cl;
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Object args[] = new Object[1];
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args[0] = new String[0]; //this is argv
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try {
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cl = Class.forName(className);
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cl.getMethod("main", new Class[] { String[].class })
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.invoke(null, args);
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} catch (Exception ex) {
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// can be: ClassNotFoundException,
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// NoSuchMethodException, SecurityException,
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// IllegalAccessException, IllegalArgumentException
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// InvocationTargetException
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// or uncaught exception from main()
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Log.e(LOG_TAG, "Exception invoking static main on "
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+ className, ex);
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throw new RuntimeException(ex);
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}
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}
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/** retry interval for opening a zygote socket */
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static final int ZYGOTE_RETRY_MILLIS = 500;
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/**
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* Tries to open socket to Zygote process if not already open. If
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* already open, does nothing. May block and retry.
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*/
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private static void openZygoteSocketIfNeeded()
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throws ZygoteStartFailedEx {
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int retryCount;
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if (sPreviousZygoteOpenFailed) {
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/*
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* If we've failed before, expect that we'll fail again and
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* don't pause for retries.
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*/
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retryCount = 0;
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} else {
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retryCount = 10;
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}
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/*
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* See bug #811181: Sometimes runtime can make it up before zygote.
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* Really, we'd like to do something better to avoid this condition,
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* but for now just wait a bit...
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*/
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for (int retry = 0
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; (sZygoteSocket == null) && (retry < (retryCount + 1))
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; retry++ ) {
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if (retry > 0) {
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try {
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Log.i("Zygote", "Zygote not up yet, sleeping...");
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Thread.sleep(ZYGOTE_RETRY_MILLIS);
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} catch (InterruptedException ex) {
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// should never happen
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}
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}
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try {
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sZygoteSocket = new LocalSocket();
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sZygoteSocket.connect(new LocalSocketAddress(ZYGOTE_SOCKET,
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LocalSocketAddress.Namespace.RESERVED));
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sZygoteInputStream
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= new DataInputStream(sZygoteSocket.getInputStream());
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sZygoteWriter =
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new BufferedWriter(
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new OutputStreamWriter(
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sZygoteSocket.getOutputStream()),
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256);
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Log.i("Zygote", "Process: zygote socket opened");
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sPreviousZygoteOpenFailed = false;
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break;
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} catch (IOException ex) {
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if (sZygoteSocket != null) {
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try {
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sZygoteSocket.close();
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} catch (IOException ex2) {
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Log.e(LOG_TAG,"I/O exception on close after exception",
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ex2);
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}
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}
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sZygoteSocket = null;
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}
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}
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if (sZygoteSocket == null) {
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sPreviousZygoteOpenFailed = true;
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throw new ZygoteStartFailedEx("connect failed");
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}
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}
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/**
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* Sends an argument list to the zygote process, which starts a new child
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* and returns the child's pid. Please note: the present implementation
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* replaces newlines in the argument list with spaces.
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* @param args argument list
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* @return PID of new child process
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* @throws ZygoteStartFailedEx if process start failed for any reason
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*/
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private static int zygoteSendArgsAndGetPid(ArrayList<String> args)
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throws ZygoteStartFailedEx {
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int pid;
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openZygoteSocketIfNeeded();
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try {
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/**
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* See com.android.internal.os.ZygoteInit.readArgumentList()
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* Presently the wire format to the zygote process is:
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* a) a count of arguments (argc, in essence)
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* b) a number of newline-separated argument strings equal to count
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*
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* After the zygote process reads these it will write the pid of
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* the child or -1 on failure.
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*/
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sZygoteWriter.write(Integer.toString(args.size()));
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sZygoteWriter.newLine();
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int sz = args.size();
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for (int i = 0; i < sz; i++) {
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String arg = args.get(i);
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if (arg.indexOf('\n') >= 0) {
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throw new ZygoteStartFailedEx(
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"embedded newlines not allowed");
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}
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sZygoteWriter.write(arg);
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sZygoteWriter.newLine();
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}
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sZygoteWriter.flush();
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// Should there be a timeout on this?
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pid = sZygoteInputStream.readInt();
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if (pid < 0) {
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throw new ZygoteStartFailedEx("fork() failed");
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}
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} catch (IOException ex) {
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try {
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if (sZygoteSocket != null) {
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sZygoteSocket.close();
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}
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} catch (IOException ex2) {
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// we're going to fail anyway
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Log.e(LOG_TAG,"I/O exception on routine close", ex2);
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}
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sZygoteSocket = null;
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throw new ZygoteStartFailedEx(ex);
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}
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return pid;
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}
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/**
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* Starts a new process via the zygote mechanism.
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*
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* @param processClass Class name whose static main() to run
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* @param niceName 'nice' process name to appear in ps
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* @param uid a POSIX uid that the new process should setuid() to
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* @param gid a POSIX gid that the new process shuold setgid() to
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* @param gids null-ok; a list of supplementary group IDs that the
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* new process should setgroup() to.
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* @param enableDebugger True if debugging should be enabled for this process.
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* @param extraArgs Additional arguments to supply to the zygote process.
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* @return PID
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* @throws ZygoteStartFailedEx if process start failed for any reason
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*/
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private static int startViaZygote(final String processClass,
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final String niceName,
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final int uid, final int gid,
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final int[] gids,
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int debugFlags,
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String[] extraArgs)
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throws ZygoteStartFailedEx {
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int pid;
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synchronized(Process.class) {
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ArrayList<String> argsForZygote = new ArrayList<String>();
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// --runtime-init, --setuid=, --setgid=,
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// and --setgroups= must go first
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argsForZygote.add("--runtime-init");
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argsForZygote.add("--setuid=" + uid);
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argsForZygote.add("--setgid=" + gid);
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if ((debugFlags & Zygote.DEBUG_ENABLE_SAFEMODE) != 0) {
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argsForZygote.add("--enable-safemode");
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}
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if ((debugFlags & Zygote.DEBUG_ENABLE_DEBUGGER) != 0) {
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argsForZygote.add("--enable-debugger");
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}
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if ((debugFlags & Zygote.DEBUG_ENABLE_CHECKJNI) != 0) {
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argsForZygote.add("--enable-checkjni");
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}
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if ((debugFlags & Zygote.DEBUG_ENABLE_ASSERT) != 0) {
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argsForZygote.add("--enable-assert");
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}
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//TODO optionally enable debuger
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//argsForZygote.add("--enable-debugger");
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// --setgroups is a comma-separated list
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if (gids != null && gids.length > 0) {
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StringBuilder sb = new StringBuilder();
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sb.append("--setgroups=");
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int sz = gids.length;
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|
for (int i = 0; i < sz; i++) {
|
|
if (i != 0) {
|
|
sb.append(',');
|
|
}
|
|
sb.append(gids[i]);
|
|
}
|
|
|
|
argsForZygote.add(sb.toString());
|
|
}
|
|
|
|
if (niceName != null) {
|
|
argsForZygote.add("--nice-name=" + niceName);
|
|
}
|
|
|
|
argsForZygote.add(processClass);
|
|
|
|
if (extraArgs != null) {
|
|
for (String arg : extraArgs) {
|
|
argsForZygote.add(arg);
|
|
}
|
|
}
|
|
|
|
pid = zygoteSendArgsAndGetPid(argsForZygote);
|
|
}
|
|
|
|
if (pid <= 0) {
|
|
throw new ZygoteStartFailedEx("zygote start failed:" + pid);
|
|
}
|
|
|
|
return pid;
|
|
}
|
|
|
|
/**
|
|
* Returns elapsed milliseconds of the time this process has run.
|
|
* @return Returns the number of milliseconds this process has return.
|
|
*/
|
|
public static final native long getElapsedCpuTime();
|
|
|
|
/**
|
|
* Returns the identifier of this process, which can be used with
|
|
* {@link #killProcess} and {@link #sendSignal}.
|
|
*/
|
|
public static final native int myPid();
|
|
|
|
/**
|
|
* Returns the identifier of the calling thread, which be used with
|
|
* {@link #setThreadPriority(int, int)}.
|
|
*/
|
|
public static final native int myTid();
|
|
|
|
/**
|
|
* Returns the identifier of this process's user.
|
|
*/
|
|
public static final native int myUid();
|
|
|
|
/**
|
|
* Returns the UID assigned to a particular user name, or -1 if there is
|
|
* none. If the given string consists of only numbers, it is converted
|
|
* directly to a uid.
|
|
*/
|
|
public static final native int getUidForName(String name);
|
|
|
|
/**
|
|
* Returns the GID assigned to a particular user name, or -1 if there is
|
|
* none. If the given string consists of only numbers, it is converted
|
|
* directly to a gid.
|
|
*/
|
|
public static final native int getGidForName(String name);
|
|
|
|
/**
|
|
* Returns a uid for a currently running process.
|
|
* @param pid the process id
|
|
* @return the uid of the process, or -1 if the process is not running.
|
|
* @hide pending API council review
|
|
*/
|
|
public static final int getUidForPid(int pid) {
|
|
String[] procStatusLabels = { "Uid:" };
|
|
long[] procStatusValues = new long[1];
|
|
procStatusValues[0] = -1;
|
|
Process.readProcLines("/proc/" + pid + "/status", procStatusLabels, procStatusValues);
|
|
return (int) procStatusValues[0];
|
|
}
|
|
|
|
/**
|
|
* Set the priority of a thread, based on Linux priorities.
|
|
*
|
|
* @param tid The identifier of the thread/process to change.
|
|
* @param priority A Linux priority level, from -20 for highest scheduling
|
|
* priority to 19 for lowest scheduling priority.
|
|
*
|
|
* @throws IllegalArgumentException Throws IllegalArgumentException if
|
|
* <var>tid</var> does not exist.
|
|
* @throws SecurityException Throws SecurityException if your process does
|
|
* not have permission to modify the given thread, or to use the given
|
|
* priority.
|
|
*/
|
|
public static final native void setThreadPriority(int tid, int priority)
|
|
throws IllegalArgumentException, SecurityException;
|
|
|
|
/**
|
|
* Call with 'false' to cause future calls to {@link #setThreadPriority(int)} to
|
|
* throw an exception if passed a background-level thread priority. This is only
|
|
* effective if the JNI layer is built with GUARD_THREAD_PRIORITY defined to 1.
|
|
*
|
|
* @hide
|
|
*/
|
|
public static final native void setCanSelfBackground(boolean backgroundOk);
|
|
|
|
/**
|
|
* Sets the scheduling group for a thread.
|
|
* @hide
|
|
* @param tid The indentifier of the thread/process to change.
|
|
* @param group The target group for this thread/process.
|
|
*
|
|
* @throws IllegalArgumentException Throws IllegalArgumentException if
|
|
* <var>tid</var> does not exist.
|
|
* @throws SecurityException Throws SecurityException if your process does
|
|
* not have permission to modify the given thread, or to use the given
|
|
* priority.
|
|
*/
|
|
public static final native void setThreadGroup(int tid, int group)
|
|
throws IllegalArgumentException, SecurityException;
|
|
/**
|
|
* Sets the scheduling group for a process and all child threads
|
|
* @hide
|
|
* @param pid The indentifier of the process to change.
|
|
* @param group The target group for this process.
|
|
*
|
|
* @throws IllegalArgumentException Throws IllegalArgumentException if
|
|
* <var>tid</var> does not exist.
|
|
* @throws SecurityException Throws SecurityException if your process does
|
|
* not have permission to modify the given thread, or to use the given
|
|
* priority.
|
|
*/
|
|
public static final native void setProcessGroup(int pid, int group)
|
|
throws IllegalArgumentException, SecurityException;
|
|
|
|
/**
|
|
* Set the priority of the calling thread, based on Linux priorities. See
|
|
* {@link #setThreadPriority(int, int)} for more information.
|
|
*
|
|
* @param priority A Linux priority level, from -20 for highest scheduling
|
|
* priority to 19 for lowest scheduling priority.
|
|
*
|
|
* @throws IllegalArgumentException Throws IllegalArgumentException if
|
|
* <var>tid</var> does not exist.
|
|
* @throws SecurityException Throws SecurityException if your process does
|
|
* not have permission to modify the given thread, or to use the given
|
|
* priority.
|
|
*
|
|
* @see #setThreadPriority(int, int)
|
|
*/
|
|
public static final native void setThreadPriority(int priority)
|
|
throws IllegalArgumentException, SecurityException;
|
|
|
|
/**
|
|
* Return the current priority of a thread, based on Linux priorities.
|
|
*
|
|
* @param tid The identifier of the thread/process to change.
|
|
*
|
|
* @return Returns the current priority, as a Linux priority level,
|
|
* from -20 for highest scheduling priority to 19 for lowest scheduling
|
|
* priority.
|
|
*
|
|
* @throws IllegalArgumentException Throws IllegalArgumentException if
|
|
* <var>tid</var> does not exist.
|
|
*/
|
|
public static final native int getThreadPriority(int tid)
|
|
throws IllegalArgumentException;
|
|
|
|
/**
|
|
* Determine whether the current environment supports multiple processes.
|
|
*
|
|
* @return Returns true if the system can run in multiple processes, else
|
|
* false if everything is running in a single process.
|
|
*/
|
|
public static final native boolean supportsProcesses();
|
|
|
|
/**
|
|
* Set the out-of-memory badness adjustment for a process.
|
|
*
|
|
* @param pid The process identifier to set.
|
|
* @param amt Adjustment value -- linux allows -16 to +15.
|
|
*
|
|
* @return Returns true if the underlying system supports this
|
|
* feature, else false.
|
|
*
|
|
* {@hide}
|
|
*/
|
|
public static final native boolean setOomAdj(int pid, int amt);
|
|
|
|
/**
|
|
* Change this process's argv[0] parameter. This can be useful to show
|
|
* more descriptive information in things like the 'ps' command.
|
|
*
|
|
* @param text The new name of this process.
|
|
*
|
|
* {@hide}
|
|
*/
|
|
public static final native void setArgV0(String text);
|
|
|
|
/**
|
|
* Kill the process with the given PID.
|
|
* Note that, though this API allows us to request to
|
|
* kill any process based on its PID, the kernel will
|
|
* still impose standard restrictions on which PIDs you
|
|
* are actually able to kill. Typically this means only
|
|
* the process running the caller's packages/application
|
|
* and any additional processes created by that app; packages
|
|
* sharing a common UID will also be able to kill each
|
|
* other's processes.
|
|
*/
|
|
public static final void killProcess(int pid) {
|
|
sendSignal(pid, SIGNAL_KILL);
|
|
}
|
|
|
|
/** @hide */
|
|
public static final native int setUid(int uid);
|
|
|
|
/** @hide */
|
|
public static final native int setGid(int uid);
|
|
|
|
/**
|
|
* Send a signal to the given process.
|
|
*
|
|
* @param pid The pid of the target process.
|
|
* @param signal The signal to send.
|
|
*/
|
|
public static final native void sendSignal(int pid, int signal);
|
|
|
|
/**
|
|
* @hide
|
|
* Private impl for avoiding a log message... DO NOT USE without doing
|
|
* your own log, or the Android Illuminati will find you some night and
|
|
* beat you up.
|
|
*/
|
|
public static final void killProcessQuiet(int pid) {
|
|
sendSignalQuiet(pid, SIGNAL_KILL);
|
|
}
|
|
|
|
/**
|
|
* @hide
|
|
* Private impl for avoiding a log message... DO NOT USE without doing
|
|
* your own log, or the Android Illuminati will find you some night and
|
|
* beat you up.
|
|
*/
|
|
public static final native void sendSignalQuiet(int pid, int signal);
|
|
|
|
/** @hide */
|
|
public static final native long getFreeMemory();
|
|
|
|
/** @hide */
|
|
public static final native void readProcLines(String path,
|
|
String[] reqFields, long[] outSizes);
|
|
|
|
/** @hide */
|
|
public static final native int[] getPids(String path, int[] lastArray);
|
|
|
|
/** @hide */
|
|
public static final native int getPpid();
|
|
|
|
/** @hide */
|
|
public static final int PROC_TERM_MASK = 0xff;
|
|
/** @hide */
|
|
public static final int PROC_ZERO_TERM = 0;
|
|
/** @hide */
|
|
public static final int PROC_SPACE_TERM = (int)' ';
|
|
/** @hide */
|
|
public static final int PROC_TAB_TERM = (int)'\t';
|
|
/** @hide */
|
|
public static final int PROC_COMBINE = 0x100;
|
|
/** @hide */
|
|
public static final int PROC_PARENS = 0x200;
|
|
/** @hide */
|
|
public static final int PROC_OUT_STRING = 0x1000;
|
|
/** @hide */
|
|
public static final int PROC_OUT_LONG = 0x2000;
|
|
/** @hide */
|
|
public static final int PROC_OUT_FLOAT = 0x4000;
|
|
|
|
/** @hide */
|
|
public static final native boolean readProcFile(String file, int[] format,
|
|
String[] outStrings, long[] outLongs, float[] outFloats);
|
|
|
|
/** @hide */
|
|
public static final native boolean parseProcLine(byte[] buffer, int startIndex,
|
|
int endIndex, int[] format, String[] outStrings, long[] outLongs, float[] outFloats);
|
|
|
|
/**
|
|
* Gets the total Pss value for a given process, in bytes.
|
|
*
|
|
* @param pid the process to the Pss for
|
|
* @return the total Pss value for the given process in bytes,
|
|
* or -1 if the value cannot be determined
|
|
* @hide
|
|
*/
|
|
public static final native long getPss(int pid);
|
|
}
|