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comparison agent/src/share/classes/sun/jvm/hotspot/oops/ConstantPoolCacheEntry.java @ 1602:136b78722a08

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6939203: JSR 292 needs method handle constants Summary: Add new CP types CONSTANT_MethodHandle, CONSTANT_MethodType; extend 'ldc' bytecode. Reviewed-by: twisti, never
author jrose
date Wed, 09 Jun 2010 18:50:45 -0700
parents c18cbe5936b8
children 0a8e0d4345b3
comparison
equal deleted inserted replaced
1585:49fac4acd688 1602:136b78722a08
26 26
27 import java.util.*; 27 import java.util.*;
28 import sun.jvm.hotspot.debugger.*; 28 import sun.jvm.hotspot.debugger.*;
29 import sun.jvm.hotspot.runtime.*; 29 import sun.jvm.hotspot.runtime.*;
30 import sun.jvm.hotspot.types.*; 30 import sun.jvm.hotspot.types.*;
31 import sun.jvm.hotspot.utilities.*;
31 32
32 public class ConstantPoolCacheEntry { 33 public class ConstantPoolCacheEntry {
33 private static long size; 34 private static long size;
34 private static long baseOffset; 35 private static long baseOffset;
35 private static CIntegerField indices; 36 private static CIntegerField indices;
65 this.cp = cp; 66 this.cp = cp;
66 offset = baseOffset + index * size; 67 offset = baseOffset + index * size;
67 } 68 }
68 69
69 public int getConstantPoolIndex() { 70 public int getConstantPoolIndex() {
71 if (Assert.ASSERTS_ENABLED) {
72 Assert.that(!isSecondaryEntry(), "must not be a secondary CP entry");
73 }
70 return (int) (getIndices() & 0xFFFF); 74 return (int) (getIndices() & 0xFFFF);
75 }
76
77 public boolean isSecondaryEntry() {
78 return (getIndices() & 0xFFFF) == 0;
79 }
80
81 public int getMainEntryIndex() {
82 if (Assert.ASSERTS_ENABLED) {
83 Assert.that(isSecondaryEntry(), "must be a secondary CP entry");
84 }
85 return (int) (getIndices() >>> 16);
71 } 86 }
72 87
73 private long getIndices() { 88 private long getIndices() {
74 return cp.getHandle().getCIntegerAt(indices.getOffset() + offset, indices.getSize(), indices.isUnsigned()); 89 return cp.getHandle().getCIntegerAt(indices.getOffset() + offset, indices.getSize(), indices.isUnsigned());
75 } 90 }