http://git-wip-us.apache.org/repos/asf/hbase-site/blob/883dde2f/devapidocs/src-html/org/apache/hadoop/hbase/util/ByteBufferUtils.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/util/ByteBufferUtils.html b/devapidocs/src-html/org/apache/hadoop/hbase/util/ByteBufferUtils.html index efd186d..30a1259 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/util/ByteBufferUtils.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/util/ByteBufferUtils.html @@ -58,1008 +58,1012 @@ <span class="sourceLineNo">050</span> public final static int NEXT_BIT_MASK = 1 << 7;<a name="line.50"></a> <span class="sourceLineNo">051</span> @VisibleForTesting<a name="line.51"></a> <span class="sourceLineNo">052</span> final static boolean UNSAFE_AVAIL = UnsafeAvailChecker.isAvailable();<a name="line.52"></a> -<span class="sourceLineNo">053</span> @VisibleForTesting<a name="line.53"></a> -<span class="sourceLineNo">054</span> final static boolean UNSAFE_UNALIGNED = UnsafeAvailChecker.unaligned();<a name="line.54"></a> -<span class="sourceLineNo">055</span><a name="line.55"></a> -<span class="sourceLineNo">056</span> private ByteBufferUtils() {<a name="line.56"></a> -<span class="sourceLineNo">057</span> }<a name="line.57"></a> -<span class="sourceLineNo">058</span><a name="line.58"></a> -<span class="sourceLineNo">059</span> /**<a name="line.59"></a> -<span class="sourceLineNo">060</span> * Similar to {@link WritableUtils#writeVLong(java.io.DataOutput, long)},<a name="line.60"></a> -<span class="sourceLineNo">061</span> * but writes to a {@link ByteBuffer}.<a name="line.61"></a> -<span class="sourceLineNo">062</span> */<a name="line.62"></a> -<span class="sourceLineNo">063</span> public static void writeVLong(ByteBuffer out, long i) {<a name="line.63"></a> -<span class="sourceLineNo">064</span> if (i >= -112 && i <= 127) {<a name="line.64"></a> -<span class="sourceLineNo">065</span> out.put((byte) i);<a name="line.65"></a> -<span class="sourceLineNo">066</span> return;<a name="line.66"></a> -<span class="sourceLineNo">067</span> }<a name="line.67"></a> -<span class="sourceLineNo">068</span><a name="line.68"></a> -<span class="sourceLineNo">069</span> int len = -112;<a name="line.69"></a> -<span class="sourceLineNo">070</span> if (i < 0) {<a name="line.70"></a> -<span class="sourceLineNo">071</span> i ^= -1L; // take one's complement<a name="line.71"></a> -<span class="sourceLineNo">072</span> len = -120;<a name="line.72"></a> -<span class="sourceLineNo">073</span> }<a name="line.73"></a> -<span class="sourceLineNo">074</span><a name="line.74"></a> -<span class="sourceLineNo">075</span> long tmp = i;<a name="line.75"></a> -<span class="sourceLineNo">076</span> while (tmp != 0) {<a name="line.76"></a> -<span class="sourceLineNo">077</span> tmp = tmp >> 8;<a name="line.77"></a> -<span class="sourceLineNo">078</span> len--;<a name="line.78"></a> -<span class="sourceLineNo">079</span> }<a name="line.79"></a> -<span class="sourceLineNo">080</span><a name="line.80"></a> -<span class="sourceLineNo">081</span> out.put((byte) len);<a name="line.81"></a> -<span class="sourceLineNo">082</span><a name="line.82"></a> -<span class="sourceLineNo">083</span> len = (len < -120) ? -(len + 120) : -(len + 112);<a name="line.83"></a> -<span class="sourceLineNo">084</span><a name="line.84"></a> -<span class="sourceLineNo">085</span> for (int idx = len; idx != 0; idx--) {<a name="line.85"></a> -<span class="sourceLineNo">086</span> int shiftbits = (idx - 1) * 8;<a name="line.86"></a> -<span class="sourceLineNo">087</span> long mask = 0xFFL << shiftbits;<a name="line.87"></a> -<span class="sourceLineNo">088</span> out.put((byte) ((i & mask) >> shiftbits));<a name="line.88"></a> -<span class="sourceLineNo">089</span> }<a name="line.89"></a> -<span class="sourceLineNo">090</span> }<a name="line.90"></a> -<span class="sourceLineNo">091</span><a name="line.91"></a> -<span class="sourceLineNo">092</span> /**<a name="line.92"></a> -<span class="sourceLineNo">093</span> * Similar to {@link WritableUtils#readVLong(DataInput)} but reads from a<a name="line.93"></a> -<span class="sourceLineNo">094</span> * {@link ByteBuffer}.<a name="line.94"></a> -<span class="sourceLineNo">095</span> */<a name="line.95"></a> -<span class="sourceLineNo">096</span> public static long readVLong(ByteBuffer in) {<a name="line.96"></a> -<span class="sourceLineNo">097</span> byte firstByte = in.get();<a name="line.97"></a> -<span class="sourceLineNo">098</span> int len = WritableUtils.decodeVIntSize(firstByte);<a name="line.98"></a> -<span class="sourceLineNo">099</span> if (len == 1) {<a name="line.99"></a> -<span class="sourceLineNo">100</span> return firstByte;<a name="line.100"></a> -<span class="sourceLineNo">101</span> }<a name="line.101"></a> -<span class="sourceLineNo">102</span> long i = 0;<a name="line.102"></a> -<span class="sourceLineNo">103</span> for (int idx = 0; idx < len-1; idx++) {<a name="line.103"></a> -<span class="sourceLineNo">104</span> byte b = in.get();<a name="line.104"></a> -<span class="sourceLineNo">105</span> i = i << 8;<a name="line.105"></a> -<span class="sourceLineNo">106</span> i = i | (b & 0xFF);<a name="line.106"></a> -<span class="sourceLineNo">107</span> }<a name="line.107"></a> -<span class="sourceLineNo">108</span> return (WritableUtils.isNegativeVInt(firstByte) ? (i ^ -1L) : i);<a name="line.108"></a> -<span class="sourceLineNo">109</span> }<a name="line.109"></a> +<span class="sourceLineNo">053</span> public final static boolean UNSAFE_UNALIGNED = UnsafeAvailChecker.unaligned();<a name="line.53"></a> +<span class="sourceLineNo">054</span><a name="line.54"></a> +<span class="sourceLineNo">055</span> private ByteBufferUtils() {<a name="line.55"></a> +<span class="sourceLineNo">056</span> }<a name="line.56"></a> +<span class="sourceLineNo">057</span><a name="line.57"></a> +<span class="sourceLineNo">058</span> /**<a name="line.58"></a> +<span class="sourceLineNo">059</span> * Similar to {@link WritableUtils#writeVLong(java.io.DataOutput, long)},<a name="line.59"></a> +<span class="sourceLineNo">060</span> * but writes to a {@link ByteBuffer}.<a name="line.60"></a> +<span class="sourceLineNo">061</span> */<a name="line.61"></a> +<span class="sourceLineNo">062</span> public static void writeVLong(ByteBuffer out, long i) {<a name="line.62"></a> +<span class="sourceLineNo">063</span> if (i >= -112 && i <= 127) {<a name="line.63"></a> +<span class="sourceLineNo">064</span> out.put((byte) i);<a name="line.64"></a> +<span class="sourceLineNo">065</span> return;<a name="line.65"></a> +<span class="sourceLineNo">066</span> }<a name="line.66"></a> +<span class="sourceLineNo">067</span><a name="line.67"></a> +<span class="sourceLineNo">068</span> int len = -112;<a name="line.68"></a> +<span class="sourceLineNo">069</span> if (i < 0) {<a name="line.69"></a> +<span class="sourceLineNo">070</span> i ^= -1L; // take one's complement<a name="line.70"></a> +<span class="sourceLineNo">071</span> len = -120;<a name="line.71"></a> +<span class="sourceLineNo">072</span> }<a name="line.72"></a> +<span class="sourceLineNo">073</span><a name="line.73"></a> +<span class="sourceLineNo">074</span> long tmp = i;<a name="line.74"></a> +<span class="sourceLineNo">075</span> while (tmp != 0) {<a name="line.75"></a> +<span class="sourceLineNo">076</span> tmp = tmp >> 8;<a name="line.76"></a> +<span class="sourceLineNo">077</span> len--;<a name="line.77"></a> +<span class="sourceLineNo">078</span> }<a name="line.78"></a> +<span class="sourceLineNo">079</span><a name="line.79"></a> +<span class="sourceLineNo">080</span> out.put((byte) len);<a name="line.80"></a> +<span class="sourceLineNo">081</span><a name="line.81"></a> +<span class="sourceLineNo">082</span> len = (len < -120) ? -(len + 120) : -(len + 112);<a name="line.82"></a> +<span class="sourceLineNo">083</span><a name="line.83"></a> +<span class="sourceLineNo">084</span> for (int idx = len; idx != 0; idx--) {<a name="line.84"></a> +<span class="sourceLineNo">085</span> int shiftbits = (idx - 1) * 8;<a name="line.85"></a> +<span class="sourceLineNo">086</span> long mask = 0xFFL << shiftbits;<a name="line.86"></a> +<span class="sourceLineNo">087</span> out.put((byte) ((i & mask) >> shiftbits));<a name="line.87"></a> +<span class="sourceLineNo">088</span> }<a name="line.88"></a> +<span class="sourceLineNo">089</span> }<a name="line.89"></a> +<span class="sourceLineNo">090</span><a name="line.90"></a> +<span class="sourceLineNo">091</span> /**<a name="line.91"></a> +<span class="sourceLineNo">092</span> * Similar to {@link WritableUtils#readVLong(DataInput)} but reads from a<a name="line.92"></a> +<span class="sourceLineNo">093</span> * {@link ByteBuffer}.<a name="line.93"></a> +<span class="sourceLineNo">094</span> */<a name="line.94"></a> +<span class="sourceLineNo">095</span> public static long readVLong(ByteBuffer in) {<a name="line.95"></a> +<span class="sourceLineNo">096</span> byte firstByte = in.get();<a name="line.96"></a> +<span class="sourceLineNo">097</span> int len = WritableUtils.decodeVIntSize(firstByte);<a name="line.97"></a> +<span class="sourceLineNo">098</span> if (len == 1) {<a name="line.98"></a> +<span class="sourceLineNo">099</span> return firstByte;<a name="line.99"></a> +<span class="sourceLineNo">100</span> }<a name="line.100"></a> +<span class="sourceLineNo">101</span> long i = 0;<a name="line.101"></a> +<span class="sourceLineNo">102</span> for (int idx = 0; idx < len-1; idx++) {<a name="line.102"></a> +<span class="sourceLineNo">103</span> byte b = in.get();<a name="line.103"></a> +<span class="sourceLineNo">104</span> i = i << 8;<a name="line.104"></a> +<span class="sourceLineNo">105</span> i = i | (b & 0xFF);<a name="line.105"></a> +<span class="sourceLineNo">106</span> }<a name="line.106"></a> +<span class="sourceLineNo">107</span> return (WritableUtils.isNegativeVInt(firstByte) ? 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class="sourceLineNo">208</span> if (out instanceof ByteBufferWriter) {<a name="line.208"></a> -<span class="sourceLineNo">209</span> ((ByteBufferWriter) out).write(in, offset, length);<a name="line.209"></a> -<span class="sourceLineNo">210</span> } else if (in.hasArray()) {<a name="line.210"></a> -<span class="sourceLineNo">211</span> out.write(in.array(), in.arrayOffset() + offset, length);<a name="line.211"></a> -<span class="sourceLineNo">212</span> } else {<a name="line.212"></a> -<span class="sourceLineNo">213</span> for (int i = 0; i < length; ++i) {<a name="line.213"></a> -<span class="sourceLineNo">214</span> out.write(toByte(in, offset + i));<a name="line.214"></a> -<span class="sourceLineNo">215</span> }<a name="line.215"></a> -<span class="sourceLineNo">216</span> }<a name="line.216"></a> -<span class="sourceLineNo">217</span> }<a name="line.217"></a> -<span class="sourceLineNo">218</span><a name="line.218"></a> -<span class="sourceLineNo">219</span> public static int putLong(OutputStream out, final long value,<a name="line.219"></a> -<span class="sourceLineNo">220</span> final int fitInBytes) throws IOException {<a name="line.220"></a> -<span class="sourceLineNo">221</span> long tmpValue = value;<a name="line.221"></a> -<span class="sourceLineNo">222</span> for (int i = 0; i < fitInBytes; ++i) {<a name="line.222"></a> -<span class="sourceLineNo">223</span> out.write((byte) (tmpValue & 0xff));<a name="line.223"></a> -<span class="sourceLineNo">224</span> tmpValue >>>= 8;<a name="line.224"></a> -<span class="sourceLineNo">225</span> }<a name="line.225"></a> -<span class="sourceLineNo">226</span> return fitInBytes;<a name="line.226"></a> -<span class="sourceLineNo">227</span> }<a name="line.227"></a> -<span class="sourceLineNo">228</span><a name="line.228"></a> -<span class="sourceLineNo">229</span> public static int putByte(ByteBuffer buffer, int offset, byte b) {<a name="line.229"></a> -<span class="sourceLineNo">230</span> if (UNSAFE_AVAIL) {<a 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