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 java.lang; 18 19 class VMThread { 20 Thread thread; 21 int vmData; 22 VMThread(Thread t)23 VMThread(Thread t) { 24 thread = t; 25 } 26 create(Thread t, long stackSize)27 native static void create(Thread t, long stackSize); 28 currentThread()29 static native Thread currentThread(); interrupted()30 static native boolean interrupted(); sleep(long msec, int nsec)31 static native void sleep (long msec, int nsec) throws InterruptedException; yield()32 static native void yield(); 33 interrupt()34 native void interrupt(); 35 isInterrupted()36 native boolean isInterrupted(); 37 38 /** 39 * Starts the VMThread (and thus the Java Thread) with the given 40 * stack size. 41 */ start(long stackSize)42 void start(long stackSize) { 43 VMThread.create(thread, stackSize); 44 } 45 46 /** 47 * Queries whether this Thread holds a monitor lock on the 48 * given object. 49 */ holdsLock(Object object)50 native boolean holdsLock(Object object); 51 setPriority(int newPriority)52 native void setPriority(int newPriority); getStatus()53 native int getStatus(); 54 55 /** 56 * Holds a mapping from native Thread statuses to Java one. Required for 57 * translating back the result of getStatus(). 58 */ 59 static final Thread.State[] STATE_MAP = new Thread.State[] { 60 Thread.State.TERMINATED, // ZOMBIE 61 Thread.State.RUNNABLE, // RUNNING 62 Thread.State.TIMED_WAITING, // TIMED_WAIT 63 Thread.State.BLOCKED, // MONITOR 64 Thread.State.WAITING, // WAIT 65 Thread.State.NEW, // INITIALIZING 66 Thread.State.NEW, // STARTING 67 Thread.State.RUNNABLE, // NATIVE 68 Thread.State.WAITING, // VMWAIT 69 Thread.State.RUNNABLE // SUSPENDED 70 }; 71 72 /** 73 * Tell the VM that the thread's name has changed. This is useful for 74 * DDMS, which would otherwise be oblivious to Thread.setName calls. 75 */ nameChanged(String newName)76 native void nameChanged(String newName); 77 } 78