Created
September 1, 2011 09:43
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Java AutoIncrement Atomic Bytecode
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| // javap -c -l AutoIncrementDemo | |
| Compiled from "AutoIncrementDemo.java" | |
| public class AutoIncrementDemo extends java.lang.Object{ | |
| public AutoIncrementDemo(); | |
| Code: | |
| 0: aload_0 | |
| 1: invokespecial #1; //Method java/lang/Object."<init>":()V | |
| 4: return | |
| LineNumberTable: | |
| line 1: 0 | |
| public static void main(java.lang.String[]); | |
| Code: | |
| 0: bipush 8 | |
| 2: istore_1 | |
| 3: iinc 1, 1 | |
| 6: ldc2_w #2; //long 3l | |
| 9: lstore_2 | |
| 10: lload_2 | |
| 11: lconst_1 | |
| 12: ladd | |
| 13: lstore_2 | |
| 14: return | |
| LineNumberTable: | |
| line 7: 0 | |
| line 8: 3 | |
| line 9: 6 | |
| line 10: 10 | |
| line 11: 14 | |
| public static void ff0x(java.lang.String[]); | |
| Code: | |
| 0: getstatic #4; //Field vc:I | |
| 3: iconst_1 | |
| 4: iadd | |
| 5: putstatic #4; //Field vc:I | |
| 8: return | |
| LineNumberTable: | |
| line 14: 0 | |
| line 15: 8 | |
| public static void ff1x(java.lang.String[]); | |
| Code: | |
| 0: getstatic #5; //Field vb:J | |
| 3: lconst_1 | |
| 4: ladd | |
| 5: putstatic #5; //Field vb:J | |
| 8: return | |
| LineNumberTable: | |
| line 18: 0 | |
| line 19: 8 | |
| public static synchronized void foo(); | |
| Code: | |
| 0: bipush 8 | |
| 2: istore_0 | |
| 3: iinc 0, 1 | |
| 6: return | |
| LineNumberTable: | |
| line 22: 0 | |
| line 23: 3 | |
| line 24: 6 | |
| public void goo(); | |
| Code: | |
| 0: aload_0 | |
| 1: dup | |
| 2: astore_1 | |
| 3: monitorenter | |
| 4: bipush 8 | |
| 6: istore_2 | |
| 7: iinc 2, 1 | |
| 10: aload_1 | |
| 11: monitorexit | |
| 12: goto 20 | |
| 15: astore_3 | |
| 16: aload_1 | |
| 17: monitorexit | |
| 18: aload_3 | |
| 19: athrow | |
| 20: return | |
| Exception table: | |
| from to target type | |
| 4 12 15 any | |
| 15 18 15 any | |
| LineNumberTable: | |
| line 27: 0 | |
| line 28: 4 | |
| line 29: 7 | |
| line 30: 10 | |
| line 31: 20 | |
| public void koo(); | |
| Code: | |
| 0: aload_0 | |
| 1: dup | |
| 2: astore_1 | |
| 3: monitorenter | |
| 4: ldc2_w #6; //long 8l | |
| 7: lstore_2 | |
| 8: lload_2 | |
| 9: lconst_1 | |
| 10: ladd | |
| 11: lstore_2 | |
| 12: aload_1 | |
| 13: monitorexit | |
| 14: goto 24 | |
| 17: astore 4 | |
| 19: aload_1 | |
| 20: monitorexit | |
| 21: aload 4 | |
| 23: athrow | |
| 24: return | |
| Exception table: | |
| from to target type | |
| 4 14 17 any | |
| 17 21 17 any | |
| LineNumberTable: | |
| line 34: 0 | |
| line 35: 4 | |
| line 36: 8 | |
| line 37: 12 | |
| line 38: 24 | |
| static {}; | |
| Code: | |
| 0: iconst_1 | |
| 1: putstatic #4; //Field vc:I | |
| 4: lconst_1 | |
| 5: putstatic #5; //Field vb:J | |
| 8: return | |
| LineNumberTable: | |
| line 3: 0 | |
| line 4: 4 | |
| } |
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| public class AutoIncrementDemo { | |
| private static int vc = 1; | |
| private static long vb = 1L; | |
| public static void main(String[] args) { | |
| int i = 8; | |
| i++; | |
| long j = 3L; | |
| j++; | |
| } | |
| public static void ff0x(String[] args) { | |
| vc++; | |
| } | |
| public static void ff1x(String[] args) { | |
| vb++; | |
| } | |
| public synchronized static void foo() { | |
| int i = 8; | |
| i++; | |
| } | |
| public void goo() { | |
| synchronized(this) { | |
| int i = 8; | |
| i++; | |
| } | |
| } | |
| public void koo() { | |
| synchronized(this) { | |
| long j = 8; | |
| j++; | |
| } | |
| } | |
| } |
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Learn more about bidirectional Unicode characters
| // javap -c -l AutoIncrementDemo | |
| Compiled from "AutoIncrementDemo.java" | |
| public class AutoIncrementDemo extends java.lang.Object{ | |
| public AutoIncrementDemo(); | |
| Code: | |
| 0: aload_0 | |
| 1: invokespecial #1; //Method java/lang/Object."<init>":()V | |
| 4: return | |
| LineNumberTable: | |
| line 1: 0 | |
| public static void main(java.lang.String[]); | |
| Code: | |
| 0: bipush 8 | |
| 2: istore_1 | |
| 3: iinc 1, 1 | |
| 6: ldc2_w #2; //long 3l | |
| 9: lstore_2 | |
| 10: lload_2 | |
| 11: lconst_1 | |
| 12: ladd | |
| 13: lstore_2 | |
| 14: return | |
| LineNumberTable: | |
| line 7: 0 | |
| line 8: 3 | |
| line 9: 6 | |
| line 10: 10 | |
| line 11: 14 | |
| public static void ff0x(java.lang.String[]); | |
| Code: | |
| 0: getstatic #4; //Field vc:I | |
| 3: iconst_1 | |
| 4: iadd | |
| 5: putstatic #4; //Field vc:I | |
| 8: return | |
| LineNumberTable: | |
| line 14: 0 | |
| line 15: 8 | |
| public static void ff1x(java.lang.String[]); | |
| Code: | |
| 0: getstatic #5; //Field vb:J | |
| 3: lconst_1 | |
| 4: ladd | |
| 5: putstatic #5; //Field vb:J | |
| 8: return | |
| LineNumberTable: | |
| line 18: 0 | |
| line 19: 8 | |
| public static synchronized void foo(); | |
| Code: | |
| 0: bipush 8 | |
| 2: istore_0 | |
| 3: iinc 0, 1 | |
| 6: return | |
| LineNumberTable: | |
| line 22: 0 | |
| line 23: 3 | |
| line 24: 6 | |
| public void goo(); | |
| Code: | |
| 0: aload_0 | |
| 1: dup | |
| 2: astore_1 | |
| 3: monitorenter | |
| 4: bipush 8 | |
| 6: istore_2 | |
| 7: iinc 2, 1 | |
| 10: aload_1 | |
| 11: monitorexit | |
| 12: goto 20 | |
| 15: astore_3 | |
| 16: aload_1 | |
| 17: monitorexit | |
| 18: aload_3 | |
| 19: athrow | |
| 20: return | |
| Exception table: | |
| from to target type | |
| 4 12 15 any | |
| 15 18 15 any | |
| LineNumberTable: | |
| line 27: 0 | |
| line 28: 4 | |
| line 29: 7 | |
| line 30: 10 | |
| line 31: 20 | |
| public void koo(); | |
| Code: | |
| 0: aload_0 | |
| 1: dup | |
| 2: astore_1 | |
| 3: monitorenter | |
| 4: ldc2_w #6; //long 8l | |
| 7: lstore_2 | |
| 8: lload_2 | |
| 9: lconst_1 | |
| 10: ladd | |
| 11: lstore_2 | |
| 12: aload_1 | |
| 13: monitorexit | |
| 14: goto 24 | |
| 17: astore 4 | |
| 19: aload_1 | |
| 20: monitorexit | |
| 21: aload 4 | |
| 23: athrow | |
| 24: return | |
| Exception table: | |
| from to target type | |
| 4 14 17 any | |
| 17 21 17 any | |
| LineNumberTable: | |
| line 34: 0 | |
| line 35: 4 | |
| line 36: 8 | |
| line 37: 12 | |
| line 38: 24 | |
| static {}; | |
| Code: | |
| 0: iconst_1 | |
| 1: putstatic #4; //Field vc:I | |
| 4: lconst_1 | |
| 5: putstatic #5; //Field vb:J | |
| 8: return | |
| LineNumberTable: | |
| line 3: 0 | |
| line 4: 4 | |
| } |
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