http://git-wip-us.apache.org/repos/asf/hbase-site/blob/174c22ea/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FastPathBalancedQueueRpcExecutor.FastPathHandler.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FastPathBalancedQueueRpcExecutor.FastPathHandler.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FastPathBalancedQueueRpcExecutor.FastPathHandler.html index 23eeb7d..a27d588 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FastPathBalancedQueueRpcExecutor.FastPathHandler.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FastPathBalancedQueueRpcExecutor.FastPathHandler.html @@ -88,48 +88,49 @@ <span class="sourceLineNo">080</span> // if an empty queue of CallRunners so we are available for direct handoff when one comes in.<a name="line.80"></a> <span class="sourceLineNo">081</span> final Deque<FastPathHandler> fastPathHandlerStack;<a name="line.81"></a> <span class="sourceLineNo">082</span> // Semaphore to coordinate loading of fastpathed loadedTask and our running it.<a name="line.82"></a> -<span class="sourceLineNo">083</span> private Semaphore semaphore = new Semaphore(0);<a name="line.83"></a> -<span class="sourceLineNo">084</span> // The task we get when fast-pathing.<a name="line.84"></a> -<span class="sourceLineNo">085</span> private CallRunner loadedCallRunner;<a name="line.85"></a> -<span class="sourceLineNo">086</span><a name="line.86"></a> -<span class="sourceLineNo">087</span> FastPathHandler(String name, double handlerFailureThreshhold, BlockingQueue<CallRunner> q,<a name="line.87"></a> -<span class="sourceLineNo">088</span> final AtomicInteger activeHandlerCount,<a name="line.88"></a> -<span class="sourceLineNo">089</span> final Deque<FastPathHandler> fastPathHandlerStack) {<a name="line.89"></a> -<span class="sourceLineNo">090</span> super(name, handlerFailureThreshhold, q, activeHandlerCount);<a name="line.90"></a> -<span class="sourceLineNo">091</span> this.fastPathHandlerStack = fastPathHandlerStack;<a name="line.91"></a> -<span class="sourceLineNo">092</span> }<a name="line.92"></a> -<span class="sourceLineNo">093</span><a name="line.93"></a> -<span class="sourceLineNo">094</span> @Override<a name="line.94"></a> -<span class="sourceLineNo">095</span> protected CallRunner getCallRunner() throws InterruptedException {<a name="line.95"></a> -<span class="sourceLineNo">096</span> // Get a callrunner if one in the Q.<a name="line.96"></a> -<span class="sourceLineNo">097</span> CallRunner cr = this.q.poll();<a name="line.97"></a> -<span class="sourceLineNo">098</span> if (cr == null) {<a name="line.98"></a> -<span class="sourceLineNo">099</span> // Else, if a fastPathHandlerStack present and no callrunner in Q, register ourselves for<a name="line.99"></a> -<span class="sourceLineNo">100</span> // the fastpath handoff done via fastPathHandlerStack.<a name="line.100"></a> -<span class="sourceLineNo">101</span> if (this.fastPathHandlerStack != null) {<a name="line.101"></a> -<span class="sourceLineNo">102</span> this.fastPathHandlerStack.push(this);<a name="line.102"></a> -<span class="sourceLineNo">103</span> this.semaphore.acquire();<a name="line.103"></a> -<span class="sourceLineNo">104</span> cr = this.loadedCallRunner;<a name="line.104"></a> -<span class="sourceLineNo">105</span> this.loadedCallRunner = null;<a name="line.105"></a> -<span class="sourceLineNo">106</span> } else {<a name="line.106"></a> -<span class="sourceLineNo">107</span> // No fastpath available. Block until a task comes available.<a name="line.107"></a> -<span class="sourceLineNo">108</span> cr = super.getCallRunner();<a name="line.108"></a> -<span class="sourceLineNo">109</span> }<a name="line.109"></a> -<span class="sourceLineNo">110</span> }<a name="line.110"></a> -<span class="sourceLineNo">111</span> return cr;<a name="line.111"></a> -<span class="sourceLineNo">112</span> }<a name="line.112"></a> -<span class="sourceLineNo">113</span><a name="line.113"></a> -<span class="sourceLineNo">114</span> /**<a name="line.114"></a> -<span class="sourceLineNo">115</span> * @param task Task gotten via fastpath.<a name="line.115"></a> -<span class="sourceLineNo">116</span> * @return True if we successfully loaded our task<a name="line.116"></a> -<span class="sourceLineNo">117</span> */<a name="line.117"></a> -<span class="sourceLineNo">118</span> boolean loadCallRunner(final CallRunner cr) {<a name="line.118"></a> -<span class="sourceLineNo">119</span> this.loadedCallRunner = cr;<a name="line.119"></a> -<span class="sourceLineNo">120</span> this.semaphore.release();<a name="line.120"></a> -<span class="sourceLineNo">121</span> return true;<a name="line.121"></a> -<span class="sourceLineNo">122</span> }<a name="line.122"></a> -<span class="sourceLineNo">123</span> }<a name="line.123"></a> -<span class="sourceLineNo">124</span>}<a name="line.124"></a> +<span class="sourceLineNo">083</span> // UNFAIR synchronization.<a name="line.83"></a> +<span class="sourceLineNo">084</span> private Semaphore semaphore = new Semaphore(0);<a name="line.84"></a> +<span class="sourceLineNo">085</span> // The task we get when fast-pathing.<a name="line.85"></a> +<span class="sourceLineNo">086</span> private CallRunner loadedCallRunner;<a name="line.86"></a> +<span class="sourceLineNo">087</span><a name="line.87"></a> +<span class="sourceLineNo">088</span> FastPathHandler(String name, double handlerFailureThreshhold, BlockingQueue<CallRunner> q,<a name="line.88"></a> +<span class="sourceLineNo">089</span> final AtomicInteger activeHandlerCount,<a name="line.89"></a> +<span class="sourceLineNo">090</span> final Deque<FastPathHandler> fastPathHandlerStack) {<a name="line.90"></a> +<span class="sourceLineNo">091</span> super(name, handlerFailureThreshhold, q, activeHandlerCount);<a name="line.91"></a> +<span class="sourceLineNo">092</span> this.fastPathHandlerStack = fastPathHandlerStack;<a name="line.92"></a> +<span class="sourceLineNo">093</span> }<a name="line.93"></a> +<span class="sourceLineNo">094</span><a name="line.94"></a> +<span class="sourceLineNo">095</span> @Override<a name="line.95"></a> +<span class="sourceLineNo">096</span> protected CallRunner getCallRunner() throws InterruptedException {<a name="line.96"></a> +<span class="sourceLineNo">097</span> // Get a callrunner if one in the Q.<a name="line.97"></a> +<span class="sourceLineNo">098</span> CallRunner cr = this.q.poll();<a name="line.98"></a> +<span class="sourceLineNo">099</span> if (cr == null) {<a name="line.99"></a> +<span class="sourceLineNo">100</span> // Else, if a fastPathHandlerStack present and no callrunner in Q, register ourselves for<a name="line.100"></a> +<span class="sourceLineNo">101</span> // the fastpath handoff done via fastPathHandlerStack.<a name="line.101"></a> +<span class="sourceLineNo">102</span> if (this.fastPathHandlerStack != null) {<a name="line.102"></a> +<span class="sourceLineNo">103</span> this.fastPathHandlerStack.push(this);<a name="line.103"></a> +<span class="sourceLineNo">104</span> this.semaphore.acquire();<a name="line.104"></a> +<span class="sourceLineNo">105</span> cr = this.loadedCallRunner;<a name="line.105"></a> +<span class="sourceLineNo">106</span> this.loadedCallRunner = null;<a name="line.106"></a> +<span class="sourceLineNo">107</span> } else {<a name="line.107"></a> +<span class="sourceLineNo">108</span> // No fastpath available. Block until a task comes available.<a name="line.108"></a> +<span class="sourceLineNo">109</span> cr = super.getCallRunner();<a name="line.109"></a> +<span class="sourceLineNo">110</span> }<a name="line.110"></a> +<span class="sourceLineNo">111</span> }<a name="line.111"></a> +<span class="sourceLineNo">112</span> return cr;<a name="line.112"></a> +<span class="sourceLineNo">113</span> }<a name="line.113"></a> +<span class="sourceLineNo">114</span><a name="line.114"></a> +<span class="sourceLineNo">115</span> /**<a name="line.115"></a> +<span class="sourceLineNo">116</span> * @param cr Task gotten via fastpath.<a name="line.116"></a> +<span class="sourceLineNo">117</span> * @return True if we successfully loaded our task<a name="line.117"></a> +<span class="sourceLineNo">118</span> */<a name="line.118"></a> +<span class="sourceLineNo">119</span> boolean loadCallRunner(final CallRunner cr) {<a name="line.119"></a> +<span class="sourceLineNo">120</span> this.loadedCallRunner = cr;<a name="line.120"></a> +<span class="sourceLineNo">121</span> this.semaphore.release();<a name="line.121"></a> +<span class="sourceLineNo">122</span> return true;<a name="line.122"></a> +<span class="sourceLineNo">123</span> }<a name="line.123"></a> +<span class="sourceLineNo">124</span> }<a name="line.124"></a> +<span class="sourceLineNo">125</span>}<a name="line.125"></a>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/174c22ea/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FastPathBalancedQueueRpcExecutor.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FastPathBalancedQueueRpcExecutor.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FastPathBalancedQueueRpcExecutor.html index 23eeb7d..a27d588 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FastPathBalancedQueueRpcExecutor.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/FastPathBalancedQueueRpcExecutor.html @@ -88,48 +88,49 @@ <span class="sourceLineNo">080</span> // if an empty queue of CallRunners so we are available for direct handoff when one comes in.<a name="line.80"></a> <span class="sourceLineNo">081</span> final Deque<FastPathHandler> fastPathHandlerStack;<a name="line.81"></a> <span class="sourceLineNo">082</span> // Semaphore to coordinate loading of fastpathed loadedTask and our running it.<a name="line.82"></a> -<span class="sourceLineNo">083</span> private Semaphore semaphore = new Semaphore(0);<a name="line.83"></a> -<span class="sourceLineNo">084</span> // The task we get when fast-pathing.<a name="line.84"></a> -<span class="sourceLineNo">085</span> private CallRunner loadedCallRunner;<a name="line.85"></a> -<span class="sourceLineNo">086</span><a name="line.86"></a> -<span class="sourceLineNo">087</span> FastPathHandler(String name, double handlerFailureThreshhold, BlockingQueue<CallRunner> q,<a name="line.87"></a> -<span class="sourceLineNo">088</span> final AtomicInteger activeHandlerCount,<a name="line.88"></a> -<span class="sourceLineNo">089</span> final Deque<FastPathHandler> fastPathHandlerStack) {<a name="line.89"></a> -<span class="sourceLineNo">090</span> super(name, handlerFailureThreshhold, q, activeHandlerCount);<a name="line.90"></a> -<span class="sourceLineNo">091</span> this.fastPathHandlerStack = fastPathHandlerStack;<a name="line.91"></a> -<span class="sourceLineNo">092</span> }<a name="line.92"></a> -<span class="sourceLineNo">093</span><a name="line.93"></a> -<span class="sourceLineNo">094</span> @Override<a name="line.94"></a> -<span class="sourceLineNo">095</span> protected CallRunner getCallRunner() throws InterruptedException {<a name="line.95"></a> -<span class="sourceLineNo">096</span> // Get a callrunner if one in the Q.<a name="line.96"></a> -<span class="sourceLineNo">097</span> CallRunner cr = this.q.poll();<a name="line.97"></a> -<span class="sourceLineNo">098</span> if (cr == null) {<a name="line.98"></a> -<span class="sourceLineNo">099</span> // Else, if a fastPathHandlerStack present and no callrunner in Q, register ourselves for<a name="line.99"></a> -<span class="sourceLineNo">100</span> // the fastpath handoff done via fastPathHandlerStack.<a name="line.100"></a> -<span class="sourceLineNo">101</span> if (this.fastPathHandlerStack != null) {<a name="line.101"></a> -<span class="sourceLineNo">102</span> this.fastPathHandlerStack.push(this);<a name="line.102"></a> -<span class="sourceLineNo">103</span> this.semaphore.acquire();<a name="line.103"></a> -<span class="sourceLineNo">104</span> cr = this.loadedCallRunner;<a name="line.104"></a> -<span class="sourceLineNo">105</span> this.loadedCallRunner = null;<a name="line.105"></a> -<span class="sourceLineNo">106</span> } else {<a name="line.106"></a> -<span class="sourceLineNo">107</span> // No fastpath available. Block until a task comes available.<a name="line.107"></a> -<span class="sourceLineNo">108</span> cr = super.getCallRunner();<a name="line.108"></a> -<span class="sourceLineNo">109</span> }<a name="line.109"></a> -<span class="sourceLineNo">110</span> }<a name="line.110"></a> -<span class="sourceLineNo">111</span> return cr;<a name="line.111"></a> -<span class="sourceLineNo">112</span> }<a name="line.112"></a> -<span class="sourceLineNo">113</span><a name="line.113"></a> -<span class="sourceLineNo">114</span> /**<a name="line.114"></a> -<span class="sourceLineNo">115</span> * @param task Task gotten via fastpath.<a name="line.115"></a> -<span class="sourceLineNo">116</span> * @return True if we successfully loaded our task<a name="line.116"></a> -<span class="sourceLineNo">117</span> */<a name="line.117"></a> -<span class="sourceLineNo">118</span> boolean loadCallRunner(final CallRunner cr) {<a name="line.118"></a> -<span class="sourceLineNo">119</span> this.loadedCallRunner = cr;<a name="line.119"></a> -<span class="sourceLineNo">120</span> this.semaphore.release();<a name="line.120"></a> -<span class="sourceLineNo">121</span> return true;<a name="line.121"></a> -<span class="sourceLineNo">122</span> }<a name="line.122"></a> -<span class="sourceLineNo">123</span> }<a name="line.123"></a> -<span class="sourceLineNo">124</span>}<a name="line.124"></a> +<span class="sourceLineNo">083</span> // UNFAIR synchronization.<a name="line.83"></a> +<span class="sourceLineNo">084</span> private Semaphore semaphore = new Semaphore(0);<a name="line.84"></a> +<span class="sourceLineNo">085</span> // The task we get when fast-pathing.<a name="line.85"></a> +<span class="sourceLineNo">086</span> private CallRunner loadedCallRunner;<a name="line.86"></a> +<span class="sourceLineNo">087</span><a name="line.87"></a> +<span class="sourceLineNo">088</span> FastPathHandler(String name, double handlerFailureThreshhold, BlockingQueue<CallRunner> q,<a name="line.88"></a> +<span class="sourceLineNo">089</span> final AtomicInteger activeHandlerCount,<a name="line.89"></a> +<span class="sourceLineNo">090</span> final Deque<FastPathHandler> fastPathHandlerStack) {<a name="line.90"></a> +<span class="sourceLineNo">091</span> super(name, handlerFailureThreshhold, q, activeHandlerCount);<a name="line.91"></a> +<span class="sourceLineNo">092</span> this.fastPathHandlerStack = fastPathHandlerStack;<a name="line.92"></a> +<span class="sourceLineNo">093</span> }<a name="line.93"></a> +<span class="sourceLineNo">094</span><a name="line.94"></a> +<span class="sourceLineNo">095</span> @Override<a name="line.95"></a> +<span class="sourceLineNo">096</span> protected CallRunner getCallRunner() throws InterruptedException {<a name="line.96"></a> +<span class="sourceLineNo">097</span> // Get a callrunner if one in the Q.<a name="line.97"></a> +<span class="sourceLineNo">098</span> CallRunner cr = this.q.poll();<a name="line.98"></a> +<span class="sourceLineNo">099</span> if (cr == null) {<a name="line.99"></a> +<span class="sourceLineNo">100</span> // Else, if a fastPathHandlerStack present and no callrunner in Q, register ourselves for<a name="line.100"></a> +<span class="sourceLineNo">101</span> // the fastpath handoff done via fastPathHandlerStack.<a name="line.101"></a> +<span class="sourceLineNo">102</span> if (this.fastPathHandlerStack != null) {<a name="line.102"></a> +<span class="sourceLineNo">103</span> this.fastPathHandlerStack.push(this);<a name="line.103"></a> +<span class="sourceLineNo">104</span> this.semaphore.acquire();<a name="line.104"></a> +<span class="sourceLineNo">105</span> cr = this.loadedCallRunner;<a name="line.105"></a> +<span class="sourceLineNo">106</span> this.loadedCallRunner = null;<a name="line.106"></a> +<span class="sourceLineNo">107</span> } else {<a name="line.107"></a> +<span class="sourceLineNo">108</span> // No fastpath available. Block until a task comes available.<a name="line.108"></a> +<span class="sourceLineNo">109</span> cr = super.getCallRunner();<a name="line.109"></a> +<span class="sourceLineNo">110</span> }<a name="line.110"></a> +<span class="sourceLineNo">111</span> }<a name="line.111"></a> +<span class="sourceLineNo">112</span> return cr;<a name="line.112"></a> +<span class="sourceLineNo">113</span> }<a name="line.113"></a> +<span class="sourceLineNo">114</span><a name="line.114"></a> +<span class="sourceLineNo">115</span> /**<a name="line.115"></a> +<span class="sourceLineNo">116</span> * @param cr Task gotten via fastpath.<a name="line.116"></a> +<span class="sourceLineNo">117</span> * @return True if we successfully loaded our task<a name="line.117"></a> +<span class="sourceLineNo">118</span> */<a name="line.118"></a> +<span class="sourceLineNo">119</span> boolean loadCallRunner(final CallRunner cr) {<a name="line.119"></a> +<span class="sourceLineNo">120</span> this.loadedCallRunner = cr;<a name="line.120"></a> +<span class="sourceLineNo">121</span> this.semaphore.release();<a name="line.121"></a> +<span class="sourceLineNo">122</span> return true;<a name="line.122"></a> +<span class="sourceLineNo">123</span> }<a name="line.123"></a> +<span class="sourceLineNo">124</span> }<a name="line.124"></a> +<span class="sourceLineNo">125</span>}<a name="line.125"></a>
