http://git-wip-us.apache.org/repos/asf/hbase-site/blob/3fb12ee1/devapidocs/src-html/org/apache/hadoop/hbase/util/ClassSize.MemoryLayout.html
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diff --git
a/devapidocs/src-html/org/apache/hadoop/hbase/util/ClassSize.MemoryLayout.html
b/devapidocs/src-html/org/apache/hadoop/hbase/util/ClassSize.MemoryLayout.html
index 84d8465..cf3e8d1 100644
---
a/devapidocs/src-html/org/apache/hadoop/hbase/util/ClassSize.MemoryLayout.html
+++
b/devapidocs/src-html/org/apache/hadoop/hbase/util/ClassSize.MemoryLayout.html
@@ -28,443 +28,450 @@
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>package org.apache.hadoop.hbase.util;<a
name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
-<span class="sourceLineNo">023</span>import java.lang.reflect.Field;<a
name="line.23"></a>
-<span class="sourceLineNo">024</span>import java.lang.reflect.Modifier;<a
name="line.24"></a>
-<span class="sourceLineNo">025</span>import
java.util.concurrent.ConcurrentHashMap;<a name="line.25"></a>
-<span class="sourceLineNo">026</span>import
java.util.concurrent.ConcurrentSkipListMap;<a name="line.26"></a>
-<span class="sourceLineNo">027</span><a name="line.27"></a>
-<span class="sourceLineNo">028</span>import org.apache.commons.logging.Log;<a
name="line.28"></a>
-<span class="sourceLineNo">029</span>import
org.apache.commons.logging.LogFactory;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import
org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.30"></a>
-<span class="sourceLineNo">031</span><a name="line.31"></a>
+<span class="sourceLineNo">023</span>import
com.google.common.annotations.VisibleForTesting;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import java.lang.reflect.Field;<a
name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.lang.reflect.Modifier;<a
name="line.25"></a>
+<span class="sourceLineNo">026</span>import
java.util.concurrent.ConcurrentHashMap;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import
java.util.concurrent.ConcurrentSkipListMap;<a name="line.27"></a>
+<span class="sourceLineNo">028</span><a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.commons.logging.Log;<a
name="line.29"></a>
+<span class="sourceLineNo">030</span>import
org.apache.commons.logging.LogFactory;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import
org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
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class, an attempt to calculate the<a name="line.34"></a>
-<span class="sourceLineNo">035</span> * actual bytes that an object of this
class will occupy in memory<a name="line.35"></a>
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-<span class="sourceLineNo">037</span> * The core of this class is taken from
the Derby project<a name="line.37"></a>
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LogFactory.getLog(ClassSize.class);<a name="line.41"></a>
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-<span class="sourceLineNo">043</span> /** Array overhead */<a
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-<span class="sourceLineNo">046</span> /** Overhead for ArrayList(0) */<a
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name="line.50"></a>
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-<span class="sourceLineNo">052</span> /** Overhead for a single entry in
LinkedList */<a name="line.52"></a>
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LINKEDLIST_ENTRY;<a name="line.53"></a>
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-<span class="sourceLineNo">055</span> /** Overhead for ByteBuffer */<a
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-<span class="sourceLineNo">061</span> /** Overhead for entry in map */<a
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name="line.62"></a>
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CONCURRENT_HASHMAP;<a name="line.77"></a>
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-<span class="sourceLineNo">079</span> /** Overhead for
ConcurrentHashMap.Entry */<a name="line.79"></a>
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CONCURRENT_HASHMAP_ENTRY;<a name="line.80"></a>
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ConcurrentHashMap.Segment */<a name="line.82"></a>
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CONCURRENT_HASHMAP_SEGMENT;<a name="line.83"></a>
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*/<a name="line.85"></a>
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CONCURRENT_SKIPLISTMAP;<a name="line.86"></a>
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-<span class="sourceLineNo">088</span> /** Overhead for ConcurrentSkipListMap
Entry */<a name="line.88"></a>
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CONCURRENT_SKIPLISTMAP_ENTRY;<a name="line.89"></a>
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-<span class="sourceLineNo">091</span> /** Overhead for CellArrayMap */<a
name="line.91"></a>
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CELL_ARRAY_MAP;<a name="line.92"></a>
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-<span class="sourceLineNo">094</span> /** Overhead for Cell Array Entry */<a
name="line.94"></a>
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CELL_ARRAY_MAP_ENTRY;<a name="line.95"></a>
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-<span class="sourceLineNo">097</span> /** Overhead for ReentrantReadWriteLock
*/<a name="line.97"></a>
-<span class="sourceLineNo">098</span> public static final int
REENTRANT_LOCK;<a name="line.98"></a>
-<span class="sourceLineNo">099</span><a name="line.99"></a>
-<span class="sourceLineNo">100</span> /** Overhead for AtomicLong */<a
name="line.100"></a>
-<span class="sourceLineNo">101</span> public static final int ATOMIC_LONG;<a
name="line.101"></a>
-<span class="sourceLineNo">102</span><a name="line.102"></a>
-<span class="sourceLineNo">103</span> /** Overhead for AtomicInteger */<a
name="line.103"></a>
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ATOMIC_INTEGER;<a name="line.104"></a>
-<span class="sourceLineNo">105</span><a name="line.105"></a>
-<span class="sourceLineNo">106</span> /** Overhead for AtomicBoolean */<a
name="line.106"></a>
-<span class="sourceLineNo">107</span> public static final int
ATOMIC_BOOLEAN;<a name="line.107"></a>
-<span class="sourceLineNo">108</span><a name="line.108"></a>
-<span class="sourceLineNo">109</span> /** Overhead for AtomicReference */<a
name="line.109"></a>
-<span class="sourceLineNo">110</span> public static final int
ATOMIC_REFERENCE;<a name="line.110"></a>
-<span class="sourceLineNo">111</span><a name="line.111"></a>
-<span class="sourceLineNo">112</span> /** Overhead for CopyOnWriteArraySet
*/<a name="line.112"></a>
-<span class="sourceLineNo">113</span> public static final int
COPYONWRITE_ARRAYSET;<a name="line.113"></a>
-<span class="sourceLineNo">114</span><a name="line.114"></a>
-<span class="sourceLineNo">115</span> /** Overhead for CopyOnWriteArrayList
*/<a name="line.115"></a>
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COPYONWRITE_ARRAYLIST;<a name="line.116"></a>
-<span class="sourceLineNo">117</span><a name="line.117"></a>
-<span class="sourceLineNo">118</span> /** Overhead for timerange */<a
name="line.118"></a>
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name="line.119"></a>
-<span class="sourceLineNo">120</span><a name="line.120"></a>
-<span class="sourceLineNo">121</span> /** Overhead for TimeRangeTracker */<a
name="line.121"></a>
-<span class="sourceLineNo">122</span> public static final int
TIMERANGE_TRACKER;<a name="line.122"></a>
-<span class="sourceLineNo">123</span><a name="line.123"></a>
-<span class="sourceLineNo">124</span> /** Overhead for CellSkipListSet */<a
name="line.124"></a>
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name="line.125"></a>
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STORE_SERVICES;<a name="line.127"></a>
-<span class="sourceLineNo">128</span><a name="line.128"></a>
-<span class="sourceLineNo">129</span> /* Are we running on jdk7? */<a
name="line.129"></a>
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name="line.130"></a>
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System.getProperty("java.version");<a name="line.132"></a>
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!version.matches("\\d\\.\\d\\..*")) {<a name="line.134"></a>
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RuntimeException("Unexpected version format: " + version);<a
name="line.135"></a>
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name="line.137"></a>
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'0');<a name="line.138"></a>
-<span class="sourceLineNo">139</span> int minor = (int)(version.charAt(2) -
'0');<a name="line.139"></a>
-<span class="sourceLineNo">140</span> JDK7 = major == 1 && minor ==
7;<a name="line.140"></a>
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-<span class="sourceLineNo">143</span> /**<a name="line.143"></a>
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the JVM object layout. Default implementation is used in<a name="line.144"></a>
-<span class="sourceLineNo">145</span> * case Unsafe is not available.<a
name="line.145"></a>
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name="line.149"></a>
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name="line.152"></a>
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oopSize());<a name="line.153"></a>
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-<span class="sourceLineNo">155</span><a name="line.155"></a>
-<span class="sourceLineNo">156</span> /**<a name="line.156"></a>
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object pointer". Either 4 or 8, depending on 32/64 bit,<a name="line.157"></a>
-<span class="sourceLineNo">158</span> * and CompressedOops<a
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-<span class="sourceLineNo">160</span> int oopSize() {<a name="line.160"></a>
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-<span class="sourceLineNo">167</span> * @return smallest number &gt;=
input that is a multiple of 8<a name="line.167"></a>
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-<span class="sourceLineNo">169</span> public long align(long num) {<a
name="line.169"></a>
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alignSize is 8 which is the number of bytes<a name="line.170"></a>
-<span class="sourceLineNo">171</span> //stored and sent together<a
name="line.171"></a>
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name="line.195"></a>
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UnsafeAccess.theUnsafe.objectFieldOffset(<a name="line.197"></a>
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HeaderSize.class.getDeclaredField("a"));<a name="line.198"></a>
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UnsafeAccess.theUnsafe.arrayBaseOffset(byte[].class);<a name="line.207"></a>
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Object[].<a name="line.214"></a>
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*/<a name="line.98"></a>
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name="line.110"></a>
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+<span class="sourceLineNo">115</span><a name="line.115"></a>
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name="line.122"></a>
+<span class="sourceLineNo">123</span> public static final int
TIMERANGE_TRACKER;<a name="line.123"></a>
+<span class="sourceLineNo">124</span><a name="line.124"></a>
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name="line.125"></a>
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STORE_SERVICES;<a name="line.128"></a>
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RuntimeException("Unexpected version format: " + version);<a
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alignSize is 8 which is the number of bytes<a name="line.171"></a>
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+<span class="sourceLineNo">184</span> * See HBASE-15950.<a
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+<span class="sourceLineNo">195</span> @Override<a name="line.195"></a>
+<span class="sourceLineNo">196</span> int headerSize() {<a
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+<span class="sourceLineNo">197</span> try {<a name="line.197"></a>
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UnsafeAccess.theUnsafe.objectFieldOffset(<a name="line.198"></a>
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+<span class="sourceLineNo">200</span> } catch (NoSuchFieldException |
SecurityException e) {<a name="line.200"></a>
+<span class="sourceLineNo">201</span> LOG.error(e);<a
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UnsafeAccess.theUnsafe.arrayBaseOffset(byte[].class);<a name="line.208"></a>
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name="line.212"></a>
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len * UnsafeAccess.theUnsafe.ARRAY_BYTE_INDEX_SCALE);<a name="line.222"></a>
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+<span class="sourceLineNo">228</span> // no configuration, so we look at
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&& (enabled == null || Boolean.parseBoolean(enabled))) {<a
name="line.230"></a>
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name="line.232"></a>
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name="line.241"></a>
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name="line.243"></a>
+<span class="sourceLineNo">244</span> }<a name="line.244"></a>
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Bytes.SIZEOF_LONG) + align(ARRAY);<a name="line.259"></a>
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name="line.248"></a>
+<span class="sourceLineNo">249</span> */<a name="line.249"></a>
+<span class="sourceLineNo">250</span> static {<a name="line.250"></a>
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name="line.251"></a>
+<span class="sourceLineNo">252</span><a name="line.252"></a>
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name="line.253"></a>
+<span class="sourceLineNo">254</span><a name="line.254"></a>
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+ (2 * Bytes.SIZEOF_INT)) + align(ARRAY);<a name="line.257"></a>
+<span class="sourceLineNo">258</span><a name="line.258"></a>
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<span class="sourceLineNo">260</span><a name="line.260"></a>
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Bytes.SIZEOF_INT);<a name="line.261"></a>
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<span class="sourceLineNo">262</span><a name="line.262"></a>
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size in jdk6 and jdk7; it looks like its different between<a
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what we estimate as size rather than have a conditional on<a
name="line.272"></a>
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name="line.273"></a>
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estimateBase(ConcurrentHashMap.class, false);<a name="line.274"></a>
-<span class="sourceLineNo">275</span><a name="line.275"></a>
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align(REFERENCE + OBJECT + (3 * REFERENCE) +<a name="line.276"></a>
-<span class="sourceLineNo">277</span> (2 * Bytes.SIZEOF_INT));<a
name="line.277"></a>
-<span class="sourceLineNo">278</span><a name="line.278"></a>
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align(REFERENCE + OBJECT +<a name="line.279"></a>
-<span class="sourceLineNo">280</span> (3 * Bytes.SIZEOF_INT) +
Bytes.SIZEOF_FLOAT + ARRAY);<a name="line.280"></a>
-<span class="sourceLineNo">281</span><a name="line.281"></a>
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jdk8, estimate the size rather than use a conditional<a name="line.282"></a>
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estimateBase(ConcurrentSkipListMap.class, false);<a name="line.283"></a>
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instance of CellArrayMap class, which extends<a name="line.285"></a>
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object containing a ref to an Array, so<a name="line.286"></a>
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name="line.287"></a>
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integers, one boolean and one reference to object, so<a name="line.288"></a>
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name="line.289"></a>
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2*Bytes.SIZEOF_INT + Bytes.SIZEOF_BOOLEAN<a name="line.290"></a>
-<span class="sourceLineNo">291</span> + ARRAY + 2*REFERENCE);<a
name="line.291"></a>
-<span class="sourceLineNo">292</span><a name="line.292"></a>
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align(<a name="line.293"></a>
-<span class="sourceLineNo">294</span> align(OBJECT + (3 * REFERENCE)) +
/* one node per entry */<a name="line.294"></a>
-<span class="sourceLineNo">295</span> align((OBJECT + (3 *
REFERENCE))/2)); /* one index per two entries */<a name="line.295"></a>
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the rest is counted in KeyValue.heapSize()<a name="line.297"></a>
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align(REFERENCE);<a name="line.298"></a>
+<span class="sourceLineNo">263</span> //noinspection
PointlessArithmeticExpression<a name="line.263"></a>
+<span class="sourceLineNo">264</span> BYTE_BUFFER = align(OBJECT +
REFERENCE +<a name="line.264"></a>
+<span class="sourceLineNo">265</span> (5 * Bytes.SIZEOF_INT) +<a
name="line.265"></a>
+<span class="sourceLineNo">266</span> (3 * Bytes.SIZEOF_BOOLEAN) +
Bytes.SIZEOF_LONG) + align(ARRAY);<a name="line.266"></a>
+<span class="sourceLineNo">267</span><a name="line.267"></a>
+<span class="sourceLineNo">268</span> INTEGER = align(OBJECT +
Bytes.SIZEOF_INT);<a name="line.268"></a>
+<span class="sourceLineNo">269</span><a name="line.269"></a>
+<span class="sourceLineNo">270</span> MAP_ENTRY = align(OBJECT + 5 *
REFERENCE + Bytes.SIZEOF_BOOLEAN);<a name="line.270"></a>
+<span class="sourceLineNo">271</span><a name="line.271"></a>
+<span class="sourceLineNo">272</span> TREEMAP = align(OBJECT + (2 *
Bytes.SIZEOF_INT) + 7 * REFERENCE);<a name="line.272"></a>
+<span class="sourceLineNo">273</span><a name="line.273"></a>
+<span class="sourceLineNo">274</span> // STRING is different size in jdk6
and jdk7. Just use what we estimate as size rather than<a name="line.274"></a>
+<span class="sourceLineNo">275</span> // have a conditional on whether
jdk7.<a name="line.275"></a>
+<span class="sourceLineNo">276</span> STRING = (int)
estimateBase(String.class, false);<a name="line.276"></a>
+<span class="sourceLineNo">277</span><a name="line.277"></a>
+<span class="sourceLineNo">278</span> // CONCURRENT_HASHMAP is different
size in jdk6 and jdk7; it looks like its different between<a
name="line.278"></a>
+<span class="sourceLineNo">279</span> // 23.6-b03 and 23.0-b21. Just use
what we estimate as size rather than have a conditional on<a
name="line.279"></a>
+<span class="sourceLineNo">280</span> // whether jdk7.<a
name="line.280"></a>
+<span class="sourceLineNo">281</span> CONCURRENT_HASHMAP = (int)
estimateBase(ConcurrentHashMap.class, false);<a name="line.281"></a>
+<span class="sourceLineNo">282</span><a name="line.282"></a>
+<span class="sourceLineNo">283</span> CONCURRENT_HASHMAP_ENTRY =
align(REFERENCE + OBJECT + (3 * REFERENCE) +<a name="line.283"></a>
+<span class="sourceLineNo">284</span> (2 * Bytes.SIZEOF_INT));<a
name="line.284"></a>
+<span class="sourceLineNo">285</span><a name="line.285"></a>
+<span class="sourceLineNo">286</span> CONCURRENT_HASHMAP_SEGMENT =
align(REFERENCE + OBJECT +<a name="line.286"></a>
+<span class="sourceLineNo">287</span> (3 * Bytes.SIZEOF_INT) +
Bytes.SIZEOF_FLOAT + ARRAY);<a name="line.287"></a>
+<span class="sourceLineNo">288</span><a name="line.288"></a>
+<span class="sourceLineNo">289</span> // The size changes from jdk7 to
jdk8, estimate the size rather than use a conditional<a name="line.289"></a>
+<span class="sourceLineNo">290</span> CONCURRENT_SKIPLISTMAP = (int)
estimateBase(ConcurrentSkipListMap.class, false);<a name="line.290"></a>
+<span class="sourceLineNo">291</span><a name="line.291"></a>
+<span class="sourceLineNo">292</span> // CELL_ARRAY_MAP is the size of an
instance of CellArrayMap class, which extends<a name="line.292"></a>
+<span class="sourceLineNo">293</span> // CellFlatMap class. CellArrayMap
object containing a ref to an Array, so<a name="line.293"></a>
+<span class="sourceLineNo">294</span> // OBJECT + REFERENCE + ARRAY<a
name="line.294"></a>
+<span class="sourceLineNo">295</span> // CellFlatMap object contains two
integers, one boolean and one reference to object, so<a name="line.295"></a>
+<span class="sourceLineNo">296</span> // 2*INT + BOOLEAN + REFERENCE<a
name="line.296"></a>
+<span class="sourceLineNo">297</span> CELL_ARRAY_MAP = align(OBJECT +
2*Bytes.SIZEOF_INT + Bytes.SIZEOF_BOOLEAN<a name="line.297"></a>
+<span class="sourceLineNo">298</span> + ARRAY + 2*REFERENCE);<a
name="line.298"></a>
<span class="sourceLineNo">299</span><a name="line.299"></a>
-<span class="sourceLineNo">300</span> REENTRANT_LOCK = align(OBJECT + (3 *
REFERENCE));<a name="line.300"></a>
-<span class="sourceLineNo">301</span><a name="line.301"></a>
-<span class="sourceLineNo">302</span> ATOMIC_LONG = align(OBJECT +
Bytes.SIZEOF_LONG);<a name="line.302"></a>
+<span class="sourceLineNo">300</span> CONCURRENT_SKIPLISTMAP_ENTRY =
align(<a name="line.300"></a>
+<span class="sourceLineNo">301</span> align(OBJECT + (3 * REFERENCE)) +
/* one node per entry */<a name="line.301"></a>
+<span class="sourceLineNo">302</span> align((OBJECT + (3 *
REFERENCE))/2)); /* one index per two entries */<a name="line.302"></a>
<span class="sourceLineNo">303</span><a name="line.303"></a>
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Bytes.SIZEOF_INT);<a name="line.304"></a>
-<span class="sourceLineNo">305</span><a name="line.305"></a>
-<span class="sourceLineNo">306</span> ATOMIC_BOOLEAN = align(OBJECT +
Bytes.SIZEOF_BOOLEAN);<a name="line.306"></a>
-<span class="sourceLineNo">307</span><a name="line.307"></a>
-<span class="sourceLineNo">308</span> ATOMIC_REFERENCE = align(OBJECT +
REFERENCE);<a name="line.308"></a>
-<span class="sourceLineNo">309</span><a name="line.309"></a>
-<span class="sourceLineNo">310</span> COPYONWRITE_ARRAYSET = align(OBJECT +
REFERENCE);<a name="line.310"></a>
-<span class="sourceLineNo">311</span><a name="line.311"></a>
-<span class="sourceLineNo">312</span> COPYONWRITE_ARRAYLIST = align(OBJECT
+ (2 * REFERENCE) + ARRAY);<a name="line.312"></a>
-<span class="sourceLineNo">313</span><a name="line.313"></a>
-<span class="sourceLineNo">314</span> TIMERANGE = align(ClassSize.OBJECT +
Bytes.SIZEOF_LONG * 2 + Bytes.SIZEOF_BOOLEAN);<a name="line.314"></a>
-<span class="sourceLineNo">315</span><a name="line.315"></a>
-<span class="sourceLineNo">316</span> TIMERANGE_TRACKER =
align(ClassSize.OBJECT + 2 * REFERENCE);<a name="line.316"></a>
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REFERENCE);<a name="line.317"></a>
+<span class="sourceLineNo">304</span> // REFERENCE in the CellArrayMap all
the rest is counted in KeyValue.heapSize()<a name="line.304"></a>
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align(REFERENCE);<a name="line.305"></a>
+<span class="sourceLineNo">306</span><a name="line.306"></a>
+<span class="sourceLineNo">307</span> REENTRANT_LOCK = align(OBJECT + (3 *
REFERENCE));<a name="line.307"></a>
+<span class="sourceLineNo">308</span><a name="line.308"></a>
+<span class="sourceLineNo">309</span> ATOMIC_LONG = align(OBJECT +
Bytes.SIZEOF_LONG);<a name="line.309"></a>
+<span class="sourceLineNo">310</span><a name="line.310"></a>
+<span class="sourceLineNo">311</span> ATOMIC_INTEGER = align(OBJECT +
Bytes.SIZEOF_INT);<a name="line.311"></a>
+<span class="sourceLineNo">312</span><a name="line.312"></a>
+<span class="sourceLineNo">313</span> ATOMIC_BOOLEAN = align(OBJECT +
Bytes.SIZEOF_BOOLEAN);<a name="line.313"></a>
+<span class="sourceLineNo">314</span><a name="line.314"></a>
+<span class="sourceLineNo">315</span> ATOMIC_REFERENCE = align(OBJECT +
REFERENCE);<a name="line.315"></a>
+<span class="sourceLineNo">316</span><a name="line.316"></a>
+<span class="sourceLineNo">317</span> COPYONWRITE_ARRAYSET = align(OBJECT +
REFERENCE);<a name="line.317"></a>
<span class="sourceLineNo">318</span><a name="line.318"></a>
-<span class="sourceLineNo">319</span> STORE_SERVICES = align(OBJECT +
REFERENCE + ATOMIC_LONG);<a name="line.319"></a>
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instance depends on whether the JVM<a name="line.323"></a>
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it depends on the size of an object<a name="line.324"></a>
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of the size of a reference, e.g.<a name="line.325"></a>
-<span class="sourceLineNo">326</span> * 24 + 5*r where r is the size of a
reference (usually 4 or 8 bytes).<a name="line.326"></a>
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cl.getSuperclass()) {<a name="line.344"></a>
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cl.getDeclaredFields();<a name="line.345"></a>
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name="line.346"></a>
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(Modifier.isStatic(aField.getModifiers())) continue;<a name="line.348"></a>
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name="line.351"></a>
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name.equals("I"))<a name="line.358"></a>
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