| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <!-- NewPage --> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc --> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> |
| <title>FSHLog.SafePointZigZagLatch (Apache HBase 3.0.0-alpha-2-SNAPSHOT API)</title> |
| <link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> |
| <script type="text/javascript" src="../../../../../../script.js"></script> |
| </head> |
| <body> |
| <script type="text/javascript"><!-- |
| try { |
| if (location.href.indexOf('is-external=true') == -1) { |
| parent.document.title="FSHLog.SafePointZigZagLatch (Apache HBase 3.0.0-alpha-2-SNAPSHOT API)"; |
| } |
| } |
| catch(err) { |
| } |
| //--> |
| var methods = {"i0":10,"i1":10,"i2":10,"i3":10,"i4":10,"i5":10}; |
| var tabs = {65535:["t0","All Methods"],2:["t2","Instance Methods"],8:["t4","Concrete Methods"]}; |
| var altColor = "altColor"; |
| var rowColor = "rowColor"; |
| var tableTab = "tableTab"; |
| var activeTableTab = "activeTableTab"; |
| </script> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| <!-- ========= START OF TOP NAVBAR ======= --> |
| <div class="topNav"><a name="navbar.top"> |
| <!-- --> |
| </a> |
| <div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div> |
| <a name="navbar.top.firstrow"> |
| <!-- --> |
| </a> |
| <ul class="navList" title="Navigation"> |
| <li><a href="../../../../../../overview-summary.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="class-use/FSHLog.SafePointZigZagLatch.html">Use</a></li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../../index-all.html">Index</a></li> |
| <li><a href="../../../../../../help-doc.html">Help</a></li> |
| </ul> |
| </div> |
| <div class="subNav"> |
| <ul class="navList"> |
| <li><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.RingBufferExceptionHandler.html" title="class in org.apache.hadoop.hbase.regionserver.wal"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SyncRunner.html" title="class in org.apache.hadoop.hbase.regionserver.wal"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../../index.html?org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html" target="_top">Frames</a></li> |
| <li><a href="FSHLog.SafePointZigZagLatch.html" target="_top">No Frames</a></li> |
| </ul> |
| <ul class="navList" id="allclasses_navbar_top"> |
| <li><a href="../../../../../../allclasses-noframe.html">All Classes</a></li> |
| </ul> |
| <div> |
| <script type="text/javascript"><!-- |
| allClassesLink = document.getElementById("allclasses_navbar_top"); |
| if(window==top) { |
| allClassesLink.style.display = "block"; |
| } |
| else { |
| allClassesLink.style.display = "none"; |
| } |
| //--> |
| </script> |
| </div> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li>Nested | </li> |
| <li><a href="#field.summary">Field</a> | </li> |
| <li><a href="#constructor.summary">Constr</a> | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li><a href="#field.detail">Field</a> | </li> |
| <li><a href="#constructor.detail">Constr</a> | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a name="skip.navbar.top"> |
| <!-- --> |
| </a></div> |
| <!-- ========= END OF TOP NAVBAR ========= --> |
| <!-- ======== START OF CLASS DATA ======== --> |
| <div class="header"> |
| <div class="subTitle">org.apache.hadoop.hbase.regionserver.wal</div> |
| <h2 title="Class FSHLog.SafePointZigZagLatch" class="title">Class FSHLog.SafePointZigZagLatch</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.hbase.regionserver.wal.FSHLog.SafePointZigZagLatch</li> |
| </ul> |
| </li> |
| </ul> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <dl> |
| <dt>Enclosing class:</dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FSHLog</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>static class <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.862">FSHLog.SafePointZigZagLatch</a> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> |
| <div class="block">This class is used coordinating two threads holding one thread at a 'safe point' while the |
| orchestrating thread does some work that requires the first thread paused: e.g. holding the WAL |
| writer while its WAL is swapped out from under it by another thread. |
| <p> |
| Thread A signals Thread B to hold when it gets to a 'safe point'. Thread A wait until Thread B |
| gets there. When the 'safe point' has been attained, Thread B signals Thread A. Thread B then |
| holds at the 'safe point'. Thread A on notification that Thread B is paused, goes ahead and |
| does the work it needs to do while Thread B is holding. When Thread A is done, it flags B and |
| then Thread A and Thread B continue along on their merry way. Pause and signalling 'zigzags' |
| between the two participating threads. We use two latches -- one the inverse of the other -- |
| pausing and signaling when states are achieved. |
| <p> |
| To start up the drama, Thread A creates an instance of this class each time it would do this |
| zigzag dance and passes it to Thread B (these classes use Latches so it is one shot only). |
| Thread B notices the new instance (via reading a volatile reference or how ever) and it starts |
| to work toward the 'safe point'. Thread A calls <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#waitSafePoint-org.apache.hadoop.hbase.regionserver.wal.SyncFuture-"><code>waitSafePoint(SyncFuture)</code></a> when it cannot proceed |
| until the Thread B 'safe point' is attained. Thread A will be held inside in |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#waitSafePoint-org.apache.hadoop.hbase.regionserver.wal.SyncFuture-"><code>waitSafePoint(SyncFuture)</code></a> until Thread B reaches the 'safe point'. Once there, Thread B frees |
| Thread A by calling <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#safePointAttained--"><code>safePointAttained()</code></a>. Thread A now knows Thread B is at the 'safe |
| point' and that it is holding there (When Thread B calls <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#safePointAttained--"><code>safePointAttained()</code></a> it blocks |
| here until Thread A calls <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#releaseSafePoint--"><code>releaseSafePoint()</code></a>). Thread A proceeds to do what it needs |
| to do while Thread B is paused. When finished, it lets Thread B lose by calling |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#releaseSafePoint--"><code>releaseSafePoint()</code></a> and away go both Threads again.</div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- =========== FIELD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="field.summary"> |
| <!-- --> |
| </a> |
| <h3>Field Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CountDownLatch.html?is-external=true" title="class or interface in java.util.concurrent">CountDownLatch</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#safePointAttainedLatch">safePointAttainedLatch</a></span></code> |
| <div class="block">Count down this latch when safe point attained.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CountDownLatch.html?is-external=true" title="class or interface in java.util.concurrent">CountDownLatch</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#safePointReleasedLatch">safePointReleasedLatch</a></span></code> |
| <div class="block">Latch to wait on.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.summary"> |
| <!-- --> |
| </a> |
| <h3>Constructor Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#SafePointZigZagLatch--">SafePointZigZagLatch</a></span>()</code> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.summary"> |
| <!-- --> |
| </a> |
| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#checkIfSyncFailed-org.apache.hadoop.hbase.regionserver.wal.SyncFuture-">checkIfSyncFailed</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SyncFuture.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SyncFuture</a> syncFuture)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>(package private) boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#isCocked--">isCocked</a></span>()</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>(package private) boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#isSafePointAttained--">isSafePointAttained</a></span>()</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>(package private) void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#releaseSafePoint--">releaseSafePoint</a></span>()</code> |
| <div class="block">Called by Thread A when it is done with the work it needs to do while Thread B is halted.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>(package private) void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#safePointAttained--">safePointAttained</a></span>()</code> |
| <div class="block">Called by Thread B when it attains the 'safe point'.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>(package private) <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SyncFuture.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SyncFuture</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#waitSafePoint-org.apache.hadoop.hbase.regionserver.wal.SyncFuture-">waitSafePoint</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SyncFuture.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SyncFuture</a> syncFuture)</code> |
| <div class="block">For Thread A to call when it is ready to wait on the 'safe point' to be attained.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="field.detail"> |
| <!-- --> |
| </a> |
| <h3>Field Detail</h3> |
| <a name="safePointAttainedLatch"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>safePointAttainedLatch</h4> |
| <pre>private volatile <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CountDownLatch.html?is-external=true" title="class or interface in java.util.concurrent">CountDownLatch</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#line.866">safePointAttainedLatch</a></pre> |
| <div class="block">Count down this latch when safe point attained.</div> |
| </li> |
| </ul> |
| <a name="safePointReleasedLatch"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>safePointReleasedLatch</h4> |
| <pre>private volatile <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CountDownLatch.html?is-external=true" title="class or interface in java.util.concurrent">CountDownLatch</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#line.870">safePointReleasedLatch</a></pre> |
| <div class="block">Latch to wait on. Will be released when we can proceed.</div> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.detail"> |
| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a name="SafePointZigZagLatch--"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>SafePointZigZagLatch</h4> |
| <pre><a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#line.862">SafePointZigZagLatch</a>()</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="checkIfSyncFailed-org.apache.hadoop.hbase.regionserver.wal.SyncFuture-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>checkIfSyncFailed</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#line.872">checkIfSyncFailed</a>(<a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SyncFuture.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SyncFuture</a> syncFuture) |
| throws <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FailedSyncBeforeLogCloseException.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FailedSyncBeforeLogCloseException</a></pre> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FailedSyncBeforeLogCloseException.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FailedSyncBeforeLogCloseException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="waitSafePoint-org.apache.hadoop.hbase.regionserver.wal.SyncFuture-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>waitSafePoint</h4> |
| <pre><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SyncFuture.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SyncFuture</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#line.886">waitSafePoint</a>(<a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SyncFuture.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SyncFuture</a> syncFuture) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a>, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FailedSyncBeforeLogCloseException.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FailedSyncBeforeLogCloseException</a></pre> |
| <div class="block">For Thread A to call when it is ready to wait on the 'safe point' to be attained. Thread A |
| will be held in here until Thread B calls <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#safePointAttained--"><code>safePointAttained()</code></a></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>syncFuture</code> - We need this as barometer on outstanding syncs. If it comes home with an |
| exception, then something is up w/ our syncing.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The passed <code>syncFuture</code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code></dd> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FailedSyncBeforeLogCloseException.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FailedSyncBeforeLogCloseException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="isSafePointAttained--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isSafePointAttained</h4> |
| <pre>@InterfaceAudience.Private |
| boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#line.899">isSafePointAttained</a>()</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>if the safepoint has been attained.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="safePointAttained--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>safePointAttained</h4> |
| <pre>void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#line.908">safePointAttained</a>() |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></pre> |
| <div class="block">Called by Thread B when it attains the 'safe point'. In this method, Thread B signals Thread |
| A it can proceed. Thread B will be held in here until <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#releaseSafePoint--"><code>releaseSafePoint()</code></a> is called |
| by Thread A.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="releaseSafePoint--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>releaseSafePoint</h4> |
| <pre>void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#line.917">releaseSafePoint</a>()</pre> |
| <div class="block">Called by Thread A when it is done with the work it needs to do while Thread B is halted. |
| This will release the Thread B held in a call to <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#safePointAttained--"><code>safePointAttained()</code></a></div> |
| </li> |
| </ul> |
| <a name="isCocked--"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>isCocked</h4> |
| <pre>boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html#line.924">isCocked</a>()</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>True is this is a 'cocked', fresh instance, and not one that has already fired.</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| </div> |
| <!-- ========= END OF CLASS DATA ========= --> |
| <!-- ======= START OF BOTTOM NAVBAR ====== --> |
| <div class="bottomNav"><a name="navbar.bottom"> |
| <!-- --> |
| </a> |
| <div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> |
| <a name="navbar.bottom.firstrow"> |
| <!-- --> |
| </a> |
| <ul class="navList" title="Navigation"> |
| <li><a href="../../../../../../overview-summary.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="class-use/FSHLog.SafePointZigZagLatch.html">Use</a></li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../../index-all.html">Index</a></li> |
| <li><a href="../../../../../../help-doc.html">Help</a></li> |
| </ul> |
| </div> |
| <div class="subNav"> |
| <ul class="navList"> |
| <li><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.RingBufferExceptionHandler.html" title="class in org.apache.hadoop.hbase.regionserver.wal"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SyncRunner.html" title="class in org.apache.hadoop.hbase.regionserver.wal"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../../index.html?org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html" target="_top">Frames</a></li> |
| <li><a href="FSHLog.SafePointZigZagLatch.html" target="_top">No Frames</a></li> |
| </ul> |
| <ul class="navList" id="allclasses_navbar_bottom"> |
| <li><a href="../../../../../../allclasses-noframe.html">All Classes</a></li> |
| </ul> |
| <div> |
| <script type="text/javascript"><!-- |
| allClassesLink = document.getElementById("allclasses_navbar_bottom"); |
| if(window==top) { |
| allClassesLink.style.display = "block"; |
| } |
| else { |
| allClassesLink.style.display = "none"; |
| } |
| //--> |
| </script> |
| </div> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li>Nested | </li> |
| <li><a href="#field.summary">Field</a> | </li> |
| <li><a href="#constructor.summary">Constr</a> | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li><a href="#field.detail">Field</a> | </li> |
| <li><a href="#constructor.detail">Constr</a> | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a name="skip.navbar.bottom"> |
| <!-- --> |
| </a></div> |
| <!-- ======== END OF BOTTOM NAVBAR ======= --> |
| <p class="legalCopy"><small>Copyright © 2007–2021 <a href="https://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</small></p> |
| </body> |
| </html> |
