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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_03) on Wed Nov 02 09:52:01 CST 2005 --><META http-equiv="Content-Type" content="text/html; charset=gb2312"><TITLE>ReentrantReadWriteLock.WriteLock (Java 2 Platform SE 5.0)</TITLE><META NAME="keywords" CONTENT="java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="ReentrantReadWriteLock.WriteLock (Java 2 Platform SE 5.0)";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="跳过导航链接"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" 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HREF="../../../../allclasses-noframe.html"><B>所有类</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> 摘要： 嵌套 | 字段 | <A HREF="#constructor_summary">构造方法</A> | <A HREF="#method_summary">方法</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">详细信息： 字段 | <A HREF="#constructor_detail">构造方法</A> | <A HREF="#method_detail">方法</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">java.util.concurrent.locks</FONT><BR>类 ReentrantReadWriteLock.WriteLock</H2><PRE><A HREF="../../../lang/Object.html" title="java.lang 中的类">java.lang.Object</A> <IMG SRC="../../../../resources/inherit.gif" ALT="继承者 "><B>java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock</B></PRE><DL><DT><B>所有已实现的接口：</B> <DD>java.io.Serializable, <A HREF="Lock.html" title="java.util.concurrent.locks 中的接口">Lock</A></DD></DL><DL><DT><B>正在封闭类：</B><DD><A HREF="ReentrantReadWriteLock.html" title="java.util.concurrent.locks 中的类">ReentrantReadWriteLock</A></DD></DL><HR><DL><DT><PRE>public static class <B>ReentrantReadWriteLock.WriteLock</B><DT>extends <A HREF="../../../lang/Object.html" title="java.lang 中的类">Object</A><DT>implements <A HREF="Lock.html" title="java.util.concurrent.locks 中的接口">Lock</A>, java.io.Serializable</DL></PRE><P><A HREF="ReentrantReadWriteLock.html#writeLock()"><CODE>ReentrantReadWriteLock.writeLock()</CODE></A> 方法返回的锁定。<P><P><DL><DT><B>另请参见：</B><DD><A HREF="../../../../serialized-form.html#java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock">序列化表格</A></DL><HR><P><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>构造方法摘要</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected </CODE></FONT></TD><TD><CODE><B><A HREF="ReentrantReadWriteLock.WriteLock.html#ReentrantReadWriteLock.WriteLock(java.util.concurrent.locks.ReentrantReadWriteLock)">ReentrantReadWriteLock.WriteLock</A></B>(<A HREF="ReentrantReadWriteLock.html" title="java.util.concurrent.locks 中的类">ReentrantReadWriteLock</A> lock)</CODE><BR> 子类使用的构造方法</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>方法摘要</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="ReentrantReadWriteLock.WriteLock.html#lock()">lock</A></B>()</CODE><BR> 获取写入锁定。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="ReentrantReadWriteLock.WriteLock.html#lockInterruptibly()">lockInterruptibly</A></B>()</CODE><BR> 获取写入锁定，除非当前线程被<A HREF="../../../lang/Thread.html#interrupt()"><CODE>中断</CODE></A>。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="Condition.html" title="java.util.concurrent.locks 中的接口">Condition</A></CODE></FONT></TD><TD><CODE><B><A HREF="ReentrantReadWriteLock.WriteLock.html#newCondition()">newCondition</A></B>()</CODE><BR> 返回一个用来与此 <A HREF="Lock.html" title="java.util.concurrent.locks 中的接口"><CODE>Lock</CODE></A> 实例一起使用的 <A HREF="Condition.html" title="java.util.concurrent.locks 中的接口"><CODE>Condition</CODE></A> 实例。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../lang/String.html" title="java.lang 中的类">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="ReentrantReadWriteLock.WriteLock.html#toString()">toString</A></B>()</CODE><BR> 返回标识此锁定及其锁定状态的字符串。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="ReentrantReadWriteLock.WriteLock.html#tryLock()">tryLock</A></B>()</CODE><BR> 仅当写入锁定在调用期间未被另一个线程保持时获取该锁定。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="ReentrantReadWriteLock.WriteLock.html#tryLock(long, java.util.concurrent.TimeUnit)">tryLock</A></B>(long timeout, <A HREF="../TimeUnit.html" title="java.util.concurrent 中的枚举">TimeUnit</A> unit)</CODE><BR> 如果另一个线程在给定的等待时间内没有保持写入锁定，并且当前线程未被<A HREF="../../../lang/Thread.html#interrupt()"><CODE>中断</CODE></A>，则获取写入锁定。</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="ReentrantReadWriteLock.WriteLock.html#unlock()">unlock</A></B>()</CODE><BR> 试图释放此锁定。</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>从类 java.lang.<A HREF="../../../lang/Object.html" title="java.lang 中的类">Object</A> 继承的方法</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../lang/Object.html#clone()">clone</A>, <A HREF="../../../lang/Object.html#equals(java.lang.Object)">equals</A>, <A HREF="../../../lang/Object.html#finalize()">finalize</A>, <A HREF="../../../lang/Object.html#getClass()">getClass</A>, <A HREF="../../../lang/Object.html#hashCode()">hashCode</A>, <A HREF="../../../lang/Object.html#notify()">notify</A>, <A HREF="../../../lang/Object.html#notifyAll()">notifyAll</A>, <A HREF="../../../lang/Object.html#wait()">wait</A>, <A HREF="../../../lang/Object.html#wait(long)">wait</A>, <A HREF="../../../lang/Object.html#wait(long, int)">wait</A></CODE></TD></TR></TABLE> <P><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>构造方法详细信息</B></FONT></TH></TR></TABLE><A NAME="ReentrantReadWriteLock.WriteLock(java.util.concurrent.locks.ReentrantReadWriteLock)"><!-- --></A><H3>ReentrantReadWriteLock.WriteLock</H3><PRE>protected <B>ReentrantReadWriteLock.WriteLock</B>(<A HREF="ReentrantReadWriteLock.html" title="java.util.concurrent.locks 中的类">ReentrantReadWriteLock</A> lock)</PRE><DL><DD>子类使用的构造方法<P><DL><DT><B>参数：</B><DD><CODE>lock</CODE> - 外部锁定对象<DT><B>抛出：</B><DD><CODE><A HREF="../../../lang/NullPointerException.html" title="java.lang 中的类">NullPointerException</A></CODE> - 如果 lock 为 null</DL></DL><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>方法详细信息</B></FONT></TH></TR></TABLE><A NAME="lock()"><!-- --></A><H3>lock</H3><PRE>public void <B>lock</B>()</PRE><DL><DD>获取写入锁定。 <p>如果另一个线程既没有保持读取锁定也没有保持写入锁定，则获取写入锁定并立即返回，并将写入锁定保持计数设置为 1。<p>如果当前线程已经保持写入锁定，则保持计数增加 1，该方法立即返回。<p>如果该锁定被另一个线程保持，出于线程调度的目的，将禁用当前线程，并且在获得写入锁定之前，该线程将一直处于休眠状态，此时写入锁定保持计数设置为 1。<P><DD><DL><DT><B>指定者：</B><DD>接口 <CODE><A HREF="Lock.html" title="java.util.concurrent.locks 中的接口">Lock</A></CODE> 中的 <CODE><A HREF="Lock.html#lock()">lock</A></CODE></DL></DD><DD><DL></DL></DD></DL>⌨️ 快捷键说明
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