http://git-wip-us.apache.org/repos/asf/hbase-site/blob/9e6e3360/devapidocs/src-html/org/apache/hadoop/hbase/util/ByteBufferArray.Visitor.html
----------------------------------------------------------------------
diff --git
a/devapidocs/src-html/org/apache/hadoop/hbase/util/ByteBufferArray.Visitor.html
b/devapidocs/src-html/org/apache/hadoop/hbase/util/ByteBufferArray.Visitor.html
index 7a442f0..103cd9e 100644
---
a/devapidocs/src-html/org/apache/hadoop/hbase/util/ByteBufferArray.Visitor.html
+++
b/devapidocs/src-html/org/apache/hadoop/hbase/util/ByteBufferArray.Visitor.html
@@ -52,278 +52,285 @@
<span class="sourceLineNo">044</span> * reading/writing data from this large
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<span class="sourceLineNo">045</span> */<a name="line.45"></a>
<span class="sourceLineNo">046</span>@InterfaceAudience.Private<a
name="line.46"></a>
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<span class="sourceLineNo">048</span> private static final Log LOG =
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<span class="sourceLineNo">049</span><a name="line.49"></a>
<span class="sourceLineNo">050</span> public static final int
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<span class="sourceLineNo">051</span> @VisibleForTesting<a name="line.51"></a>
<span class="sourceLineNo">052</span> ByteBuffer buffers[];<a
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<span class="sourceLineNo">053</span> private int bufferSize;<a
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(roundUp(capacity, bufferSize) / bufferSize);<a name="line.70"></a>
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+ StringUtils.byteDesc(capacity)<a name="line.71"></a>
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StringUtils.byteDesc(bufferSize) + ", count="<a name="line.72"></a>
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directByteBuffer);<a name="line.73"></a>
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+ 1];<a name="line.74"></a>
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allocator);<a name="line.75"></a>
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LinkedBlockingQueue<Runnable>());<a name="line.82"></a>
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(perThreadCount * (threadCount - 1));<a name="line.84"></a>
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dstArray, 0);<a name="line.152"></a>
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dstOffset, GET_MULTIPLE_VISTOR);<a name="line.165"></a>
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ByteBufferUtils.copyFromBufferToArray(array, bb, pos, arrayIdx, len);<a
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+<span class="sourceLineNo">061</span> * @param capacity total size of the
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name="line.67"></a>
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StringUtils.byteDesc(bufferSize) + ", count="<a name="line.73"></a>
+<span class="sourceLineNo">074</span> + bufferCount + ", direct=" +
directByteBuffer);<a name="line.74"></a>
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LinkedBlockingQueue<Runnable>());<a name="line.84"></a>
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+<span class="sourceLineNo">089</span> for (int i = 0; i < threadCount;
i++) {<a name="line.89"></a>
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threadCount - 1) ? lastThreadCount : perThreadCount;<a name="line.91"></a>
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BufferCreatorCallable(bufferSize, directByteBuffer, buffersToCreate,
allocator));<a name="line.93"></a>
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future : futures) {<a name="line.96"></a>
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+<span class="sourceLineNo">102</span> } catch (InterruptedException |
ExecutionException e) {<a name="line.102"></a>
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name="line.108"></a>
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ByteBuffer.allocate(0);<a name="line.111"></a>
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Runtime.getRuntime().availableProcessors();<a name="line.116"></a>
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BufferCreatorCallable implements Callable<ByteBuffer[]> {<a
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allocator;<a name="line.127"></a>
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bufferCapacity, boolean directByteBuffer, int bufferCount,<a
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+<span class="sourceLineNo">130</span> ByteBufferAllocator allocator)
{<a name="line.130"></a>
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bufferCapacity;<a name="line.131"></a>
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Exception {<a name="line.138"></a>
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ByteBuffer[this.bufferCount];<a name="line.139"></a>
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this.bufferCount; i++) {<a name="line.140"></a>
+<span class="sourceLineNo">141</span> buffers[i] =
allocator.allocate(this.bufferCapacity, this.directByteBuffer);<a
name="line.141"></a>
+<span class="sourceLineNo">142</span> }<a name="line.142"></a>
+<span class="sourceLineNo">143</span> return buffers;<a
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len, byte[] dstArray) {<a name="line.158"></a>
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len, byte[] dstArray, int dstOffset) {<a name="line.171"></a>
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dstOffset, GET_MULTIPLE_VISTOR);<a name="line.172"></a>
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len, byte[] srcArray, int srcOffset) {<a name="line.194"></a>
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srcOffset, PUT_MULTIPLE_VISITOR);<a name="line.195"></a>
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PUT_MULTIPLE_VISITOR = new Visitor() {<a name="line.198"></a>
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ByteBufferUtils.copyFromArrayToBuffer(bb, pos, array, arrayIdx, len);<a
name="line.201"></a>
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GET_MULTIPLE_VISTOR = new Visitor() {<a name="line.176"></a>
+<span class="sourceLineNo">177</span> @Override<a name="line.177"></a>
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pos, byte[] array, int arrayIdx, int len) {<a name="line.178"></a>
+<span class="sourceLineNo">179</span>
ByteBufferUtils.copyFromBufferToArray(array, bb, pos, arrayIdx, len);<a
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+<span class="sourceLineNo">181</span> };<a name="line.181"></a>
+<span class="sourceLineNo">182</span><a name="line.182"></a>
+<span class="sourceLineNo">183</span> /**<a name="line.183"></a>
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source array into this buffer array<a name="line.184"></a>
+<span class="sourceLineNo">185</span> * @param start start offset of this
buffer array<a name="line.185"></a>
+<span class="sourceLineNo">186</span> * @param len The maximum number of
bytes to be read from the given array<a name="line.186"></a>
+<span class="sourceLineNo">187</span> * @param srcArray The array from which
bytes are to be read<a name="line.187"></a>
+<span class="sourceLineNo">188</span> */<a name="line.188"></a>
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len, byte[] srcArray) {<a name="line.189"></a>
+<span class="sourceLineNo">190</span> putMultiple(start, len, srcArray,
0);<a name="line.190"></a>
+<span class="sourceLineNo">191</span> }<a name="line.191"></a>
+<span class="sourceLineNo">192</span><a name="line.192"></a>
+<span class="sourceLineNo">193</span> /**<a name="line.193"></a>
+<span class="sourceLineNo">194</span> * Transfers bytes from the given
source array into this buffer array<a name="line.194"></a>
+<span class="sourceLineNo">195</span> * @param start start offset of this
buffer array<a name="line.195"></a>
+<span class="sourceLineNo">196</span> * @param len The maximum number of
bytes to be read from the given array<a name="line.196"></a>
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bytes are to be read<a name="line.197"></a>
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+<span class="sourceLineNo">199</span> * read<a name="line.199"></a>
+<span class="sourceLineNo">200</span> */<a name="line.200"></a>
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len, byte[] srcArray, int srcOffset) {<a name="line.201"></a>
+<span class="sourceLineNo">202</span> multiple(start, len, srcArray,
srcOffset, PUT_MULTIPLE_VISITOR);<a name="line.202"></a>
+<span class="sourceLineNo">203</span> }<a name="line.203"></a>
<span class="sourceLineNo">204</span><a name="line.204"></a>
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bufferSize), endOffset = (int) (end % bufferSize);<a name="line.234"></a>
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arrayOffset;<a name="line.235"></a>
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startBuffer < bufferCount;<a name="line.236"></a>
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endBuffer < bufferCount<a name="line.237"></a>
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&& endOffset == 0);<a name="line.238"></a>
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|| startBuffer < 0) {<a name="line.239"></a>
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-<span class="sourceLineNo">241</span> + startBuffer + ",bufferSize="
+ bufferSize;<a name="line.241"></a>
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name="line.242"></a>
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name="line.243"></a>
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endBuffer; ++i) {<a name="line.246"></a>
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buffers[i].duplicate();<a name="line.247"></a>
-<span class="sourceLineNo">248</span> int pos = 0;<a name="line.248"></a>
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-<span class="sourceLineNo">252</span> pos = startOffset;<a
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array of ByteBuffers from the given offset to the<a name="line.265"></a>
-<span class="sourceLineNo">266</span> * length specified. For eg, if there
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'position' 5 to a 'length' 5 and the 2nd BB will be from<a name="line.268"></a>
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bufferSize), startBufferOffset = (int) (offset % bufferSize);<a
name="line.277"></a>
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{<a name="line.280"></a>
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startBuffer < bufferCount;<a name="line.284"></a>
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|| startBuffer < 0) {<a name="line.287"></a>
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name="line.291"></a>
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<= endBuffer; ++i, j++) {<a name="line.295"></a>
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buffers[i].duplicate();<a name="line.296"></a>
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name="line.297"></a>
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startBufferOffset;<a name="line.298"></a>
-<span class="sourceLineNo">299</span> if (cnt > len) cnt = len;<a
name="line.299"></a>
-<span class="sourceLineNo">300</span> bb.limit(startBufferOffset +
cnt).position(startBufferOffset);<a name="line.300"></a>
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name="line.302"></a>
-<span class="sourceLineNo">303</span> bb.position(0).limit(cnt);<a
name="line.303"></a>
-<span class="sourceLineNo">304</span> } else {<a name="line.304"></a>
-<span class="sourceLineNo">305</span> cnt = bufferSize;<a
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name="line.306"></a>
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-<span class="sourceLineNo">308</span> mbb[j] = bb.slice();<a
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-<span class="sourceLineNo">317</span> }<a name="line.317"></a>
-<span class="sourceLineNo">318</span>}<a name="line.318"></a>
+<span class="sourceLineNo">205</span> private final static Visitor
PUT_MULTIPLE_VISITOR = new Visitor() {<a name="line.205"></a>
+<span class="sourceLineNo">206</span> @Override<a name="line.206"></a>
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pos, byte[] array, int arrayIdx, int len) {<a name="line.207"></a>
+<span class="sourceLineNo">208</span>
ByteBufferUtils.copyFromArrayToBuffer(bb, pos, array, arrayIdx, len);<a
name="line.208"></a>
+<span class="sourceLineNo">209</span> }<a name="line.209"></a>
+<span class="sourceLineNo">210</span> };<a name="line.210"></a>
+<span class="sourceLineNo">211</span><a name="line.211"></a>
+<span class="sourceLineNo">212</span> private interface Visitor {<a
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+<span class="sourceLineNo">213</span> /**<a name="line.213"></a>
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destination array, else if it is a write<a name="line.215"></a>
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from the source array to the buffer<a name="line.216"></a>
+<span class="sourceLineNo">217</span> * @param bb byte buffer<a
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+<span class="sourceLineNo">218</span> * @param pos Start position in
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+<span class="sourceLineNo">219</span> * @param array a source or
destination byte array<a name="line.219"></a>
+<span class="sourceLineNo">220</span> * @param arrayOffset offset of the
byte array<a name="line.220"></a>
+<span class="sourceLineNo">221</span> * @param len read/write length<a
name="line.221"></a>
+<span class="sourceLineNo">222</span> */<a name="line.222"></a>
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byte[] array, int arrayOffset, int len);<a name="line.223"></a>
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+<span class="sourceLineNo">225</span><a name="line.225"></a>
+<span class="sourceLineNo">226</span> /**<a name="line.226"></a>
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array with a position and length as the<a name="line.227"></a>
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one buffer even if it may be need visit<a name="line.228"></a>
+<span class="sourceLineNo">229</span> * several buffers. The consistency is
guaranteed by the caller.<a name="line.229"></a>
+<span class="sourceLineNo">230</span> * @param start start offset of this
buffer array<a name="line.230"></a>
+<span class="sourceLineNo">231</span> * @param len The maximum number of
bytes to be accessed<a name="line.231"></a>
+<span class="sourceLineNo">232</span> * @param array The array from/to which
bytes are to be read/written<a name="line.232"></a>
+<span class="sourceLineNo">233</span> * @param arrayOffset The offset within
the given array of the first byte to<a name="line.233"></a>
+<span class="sourceLineNo">234</span> * be read or written<a
name="line.234"></a>
+<span class="sourceLineNo">235</span> * @param visitor implement of how to
visit the byte buffer<a name="line.235"></a>
+<span class="sourceLineNo">236</span> */<a name="line.236"></a>
+<span class="sourceLineNo">237</span> void multiple(long start, int len,
byte[] array, int arrayOffset, Visitor visitor) {<a name="line.237"></a>
+<span class="sourceLineNo">238</span> assert len >= 0;<a
name="line.238"></a>
+<span class="sourceLineNo">239</span> long end = start + len;<a
name="line.239"></a>
+<span class="sourceLineNo">240</span> int startBuffer = (int) (start /
bufferSize), startOffset = (int) (start % bufferSize);<a name="line.240"></a>
+<span class="sourceLineNo">241</span> int endBuffer = (int) (end /
bufferSize), endOffset = (int) (end % bufferSize);<a name="line.241"></a>
+<span class="sourceLineNo">242</span> assert array.length >= len +
arrayOffset;<a name="line.242"></a>
+<span class="sourceLineNo">243</span> assert startBuffer >= 0 &&
startBuffer < bufferCount;<a name="line.243"></a>
+<span class="sourceLineNo">244</span> assert endBuffer >= 0 &&
endBuffer < bufferCount<a name="line.244"></a>
+<span class="sourceLineNo">245</span> || (endBuffer == bufferCount
&& endOffset == 0);<a name="line.245"></a>
+<span class="sourceLineNo">246</span> if (startBuffer >= buffers.length
|| startBuffer < 0) {<a name="line.246"></a>
+<span class="sourceLineNo">247</span> String msg = "Failed multiple,
start=" + start + ",startBuffer="<a name="line.247"></a>
+<span class="sourceLineNo">248</span> + startBuffer + ",bufferSize="
+ bufferSize;<a name="line.248"></a>
+<span class="sourceLineNo">249</span> LOG.error(msg);<a
name="line.249"></a>
+<span class="sourceLineNo">250</span> throw new RuntimeException(msg);<a
name="line.250"></a>
+<span class="sourceLineNo">251</span> }<a name="line.251"></a>
+<span class="sourceLineNo">252</span> int srcIndex = 0, cnt = -1;<a
name="line.252"></a>
+<span class="sourceLineNo">253</span> for (int i = startBuffer; i <=
endBuffer; ++i) {<a name="line.253"></a>
+<span class="sourceLineNo">254</span> ByteBuffer bb =
buffers[i].duplicate();<a name="line.254"></a>
+<span class="sourceLineNo">255</span> int pos = 0;<a name="line.255"></a>
+<span class="sourceLineNo">256</span> if (i == startBuffer) {<a
name="line.256"></a>
+<span class="sourceLineNo">257</span> cnt = bufferSize - startOffset;<a
name="line.257"></a>
+<span class="sourceLineNo">258</span> if (cnt > len) cnt = len;<a
name="line.258"></a>
+<span class="sourceLineNo">259</span> pos = startOffset;<a
name="line.259"></a>
+<span class="sourceLineNo">260</span> } else if (i == endBuffer) {<a
name="line.260"></a>
+<span class="sourceLineNo">261</span> cnt = endOffset;<a
name="line.261"></a>
+<span class="sourceLineNo">262</span> } else {<a name="line.262"></a>
+<span class="sourceLineNo">263</span> cnt = bufferSize;<a
name="line.263"></a>
+<span class="sourceLineNo">264</span> }<a name="line.264"></a>
+<span class="sourceLineNo">265</span> visitor.visit(bb, pos, array,
srcIndex + arrayOffset, cnt);<a name="line.265"></a>
+<span class="sourceLineNo">266</span> srcIndex += cnt;<a
name="line.266"></a>
+<span class="sourceLineNo">267</span> }<a name="line.267"></a>
+<span class="sourceLineNo">268</span> assert srcIndex == len;<a
name="line.268"></a>
+<span class="sourceLineNo">269</span> }<a name="line.269"></a>
+<span class="sourceLineNo">270</span><a name="line.270"></a>
+<span class="sourceLineNo">271</span> /**<a name="line.271"></a>
+<span class="sourceLineNo">272</span> * Creates a ByteBuff from a given
array of ByteBuffers from the given offset to the<a name="line.272"></a>
+<span class="sourceLineNo">273</span> * length specified. For eg, if there
are 4 buffers forming an array each with length 10 and<a name="line.273"></a>
+<span class="sourceLineNo">274</span> * if we call asSubBuffer(5, 10) then
we will create an MBB consisting of two BBs<a name="line.274"></a>
+<span class="sourceLineNo">275</span> * and the first one be a BB from
'position' 5 to a 'length' 5 and the 2nd BB will be from<a name="line.275"></a>
+<span class="sourceLineNo">276</span> * 'position' 0 to 'length' 5.<a
name="line.276"></a>
+<span class="sourceLineNo">277</span> * @param offset<a name="line.277"></a>
+<span class="sourceLineNo">278</span> * @param len<a name="line.278"></a>
+<span class="sourceLineNo">279</span> * @return a ByteBuff formed from the
underlying ByteBuffers<a name="line.279"></a>
+<span class="sourceLineNo">280</span> */<a name="line.280"></a>
+<span class="sourceLineNo">281</span> public ByteBuff asSubByteBuff(long
offset, int len) {<a name="line.281"></a>
+<span class="sourceLineNo">282</span> assert len >= 0;<a
name="line.282"></a>
+<span class="sourceLineNo">283</span> long end = offset + len;<a
name="line.283"></a>
+<span class="sourceLineNo">284</span> int startBuffer = (int) (offset /
bufferSize), startBufferOffset = (int) (offset % bufferSize);<a
name="line.284"></a>
+<span class="sourceLineNo">285</span> int endBuffer = (int) (end /
bufferSize), endBufferOffset = (int) (end % bufferSize);<a name="line.285"></a>
+<span class="sourceLineNo">286</span> // Last buffer in the array is a
dummy one with 0 capacity. Avoid sending back that<a name="line.286"></a>
+<span class="sourceLineNo">287</span> if (endBuffer == this.bufferCount)
{<a name="line.287"></a>
+<span class="sourceLineNo">288</span> endBuffer--;<a name="line.288"></a>
+<span class="sourceLineNo">289</span> endBufferOffset = bufferSize;<a
name="line.289"></a>
+<span class="sourceLineNo">290</span> }<a name="line.290"></a>
+<span class="sourceLineNo">291</span> assert startBuffer >= 0 &&
startBuffer < bufferCount;<a name="line.291"></a>
+<span class="sourceLineNo">292</span> assert endBuffer >= 0 &&
endBuffer < bufferCount<a name="line.292"></a>
+<span class="sourceLineNo">293</span> || (endBuffer == bufferCount
&& endBufferOffset == 0);<a name="line.293"></a>
+<span class="sourceLineNo">294</span> if (startBuffer >= buffers.length
|| startBuffer < 0) {<a name="line.294"></a>
+<span class="sourceLineNo">295</span> String msg = "Failed subArray,
start=" + offset + ",startBuffer=" + startBuffer<a name="line.295"></a>
+<span class="sourceLineNo">296</span> + ",bufferSize=" +
bufferSize;<a name="line.296"></a>
+<span class="sourceLineNo">297</span> LOG.error(msg);<a
name="line.297"></a>
+<span class="sourceLineNo">298</span> throw new RuntimeException(msg);<a
name="line.298"></a>
+<span class="sourceLineNo">299</span> }<a name="line.299"></a>
+<span class="sourceLineNo">300</span> int srcIndex = 0, cnt = -1;<a
name="line.300"></a>
+<span class="sourceLineNo">301</span> ByteBuffer[] mbb = new
ByteBuffer[endBuffer - startBuffer + 1];<a name="line.301"></a>
+<span class="sourceLineNo">302</span> for (int i = startBuffer, j = 0; i
<= endBuffer; ++i, j++) {<a name="line.302"></a>
+<span class="sourceLineNo">303</span> ByteBuffer bb =
buffers[i].duplicate();<a name="line.303"></a>
+<span class="sourceLineNo">304</span> if (i == startBuffer) {<a
name="line.304"></a>
+<span class="sourceLineNo">305</span> cnt = bufferSize -
startBufferOffset;<a name="line.305"></a>
+<span class="sourceLineNo">306</span> if (cnt > len) cnt = len;<a
name="line.306"></a>
+<span class="sourceLineNo">307</span> bb.limit(startBufferOffset +
cnt).position(startBufferOffset);<a name="line.307"></a>
+<span class="sourceLineNo">308</span> } else if (i == endBuffer) {<a
name="line.308"></a>
+<span class="sourceLineNo">309</span> cnt = endBufferOffset;<a
name="line.309"></a>
+<span class="sourceLineNo">310</span> bb.position(0).limit(cnt);<a
name="line.310"></a>
+<span class="sourceLineNo">311</span> } else {<a name="line.311"></a>
+<span class="sourceLineNo">312</span> cnt = bufferSize;<a
name="line.312"></a>
+<span class="sourceLineNo">313</span> bb.position(0).limit(cnt);<a
name="line.313"></a>
+<span class="sourceLineNo">314</span> }<a name="line.314"></a>
+<span class="sourceLineNo">315</span> mbb[j] = bb.slice();<a
name="line.315"></a>
+<span class="sourceLineNo">316</span> srcIndex += cnt;<a
name="line.316"></a>
+<span class="sourceLineNo">317</span> }<a name="line.317"></a>
+<span class="sourceLineNo">318</span> assert srcIndex == len;<a
name="line.318"></a>
+<span class="sourceLineNo">319</span> if (mbb.length > 1) {<a
name="line.319"></a>
+<span class="sourceLineNo">320</span> return new MultiByteBuff(mbb);<a
name="line.320"></a>
+<span class="sourceLineNo">321</span> } else {<a name="line.321"></a>
+<span class="sourceLineNo">322</span> return new
SingleByteBuff(mbb[0]);<a name="line.322"></a>
+<span class="sourceLineNo">323</span> }<a name="line.323"></a>
+<span class="sourceLineNo">324</span> }<a name="line.324"></a>
+<span class="sourceLineNo">325</span>}<a name="line.325"></a>
