public class java.util.concurrent.locks.LockSupport
minor version: 0
major version: 59
flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
this_class: java.util.concurrent.locks.LockSupport
super_class: java.lang.Object
{
private static final jdk.internal.misc.Unsafe U;
descriptor: Ljdk/internal/misc/Unsafe;
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
private static final long PARKBLOCKER;
descriptor: J
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
private static final long SECONDARY;
descriptor: J
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
private static final long TID;
descriptor: J
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
static void <clinit>();
descriptor: ()V
flags: (0x0008) ACC_STATIC
Code:
stack=3, locals=0, args_size=0
0: invokestatic jdk.internal.misc.Unsafe.getUnsafe:()Ljdk/internal/misc/Unsafe;
putstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
1: getstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
2: ldc Ljava/lang/Thread;
ldc "parkBlocker"
3: invokevirtual jdk.internal.misc.Unsafe.objectFieldOffset:(Ljava/lang/Class;Ljava/lang/String;)J
putstatic java.util.concurrent.locks.LockSupport.PARKBLOCKER:J
4: getstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
5: ldc Ljava/lang/Thread;
ldc "threadLocalRandomSecondarySeed"
6: invokevirtual jdk.internal.misc.Unsafe.objectFieldOffset:(Ljava/lang/Class;Ljava/lang/String;)J
putstatic java.util.concurrent.locks.LockSupport.SECONDARY:J
7: getstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
8: ldc Ljava/lang/Thread;
ldc "tid"
9: invokevirtual jdk.internal.misc.Unsafe.objectFieldOffset:(Ljava/lang/Class;Ljava/lang/String;)J
putstatic java.util.concurrent.locks.LockSupport.TID:J
10: return
LocalVariableTable:
Start End Slot Name Signature
private void <init>();
descriptor: ()V
flags: (0x0002) ACC_PRIVATE
Code:
stack=1, locals=1, args_size=1
start local 0 0: aload 0
invokespecial java.lang.Object.<init>:()V
return
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 1 0 this Ljava/util/concurrent/locks/LockSupport;
private static void setBlocker(java.lang.Thread, java.lang.Object);
descriptor: (Ljava/lang/Thread;Ljava/lang/Object;)V
flags: (0x000a) ACC_PRIVATE, ACC_STATIC
Code:
stack=5, locals=2, args_size=2
start local 0 start local 1 0: getstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
aload 0
getstatic java.util.concurrent.locks.LockSupport.PARKBLOCKER:J
aload 1
invokevirtual jdk.internal.misc.Unsafe.putObject:(Ljava/lang/Object;JLjava/lang/Object;)V
1: return
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 2 0 t Ljava/lang/Thread;
0 2 1 arg Ljava/lang/Object;
MethodParameters:
Name Flags
t
arg
public static void unpark(java.lang.Thread);
descriptor: (Ljava/lang/Thread;)V
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=2, locals=1, args_size=1
start local 0 0: aload 0
ifnull 2
1: getstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
aload 0
invokevirtual jdk.internal.misc.Unsafe.unpark:(Ljava/lang/Object;)V
2: StackMap locals:
StackMap stack:
return
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 3 0 thread Ljava/lang/Thread;
MethodParameters:
Name Flags
thread
public static void park(java.lang.Object);
descriptor: (Ljava/lang/Object;)V
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=4, locals=2, args_size=1
start local 0 0: invokestatic java.lang.Thread.currentThread:()Ljava/lang/Thread;
astore 1
start local 1 1: aload 1
aload 0
invokestatic java.util.concurrent.locks.LockSupport.setBlocker:(Ljava/lang/Thread;Ljava/lang/Object;)V
2: getstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
iconst_0
lconst_0
invokevirtual jdk.internal.misc.Unsafe.park:(ZJ)V
3: aload 1
aconst_null
invokestatic java.util.concurrent.locks.LockSupport.setBlocker:(Ljava/lang/Thread;Ljava/lang/Object;)V
4: return
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 5 0 blocker Ljava/lang/Object;
1 5 1 t Ljava/lang/Thread;
MethodParameters:
Name Flags
blocker
public static void parkNanos(java.lang.Object, long);
descriptor: (Ljava/lang/Object;J)V
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=4, locals=4, args_size=2
start local 0 start local 1 0: lload 1
lconst_0
lcmp
ifle 5
1: invokestatic java.lang.Thread.currentThread:()Ljava/lang/Thread;
astore 3
start local 3 2: aload 3
aload 0
invokestatic java.util.concurrent.locks.LockSupport.setBlocker:(Ljava/lang/Thread;Ljava/lang/Object;)V
3: getstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
iconst_0
lload 1
invokevirtual jdk.internal.misc.Unsafe.park:(ZJ)V
4: aload 3
aconst_null
invokestatic java.util.concurrent.locks.LockSupport.setBlocker:(Ljava/lang/Thread;Ljava/lang/Object;)V
end local 3 5: StackMap locals:
StackMap stack:
return
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 6 0 blocker Ljava/lang/Object;
0 6 1 nanos J
2 5 3 t Ljava/lang/Thread;
MethodParameters:
Name Flags
blocker
nanos
public static void parkUntil(java.lang.Object, long);
descriptor: (Ljava/lang/Object;J)V
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=4, locals=4, args_size=2
start local 0 start local 1 0: invokestatic java.lang.Thread.currentThread:()Ljava/lang/Thread;
astore 3
start local 3 1: aload 3
aload 0
invokestatic java.util.concurrent.locks.LockSupport.setBlocker:(Ljava/lang/Thread;Ljava/lang/Object;)V
2: getstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
iconst_1
lload 1
invokevirtual jdk.internal.misc.Unsafe.park:(ZJ)V
3: aload 3
aconst_null
invokestatic java.util.concurrent.locks.LockSupport.setBlocker:(Ljava/lang/Thread;Ljava/lang/Object;)V
4: return
end local 3 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 5 0 blocker Ljava/lang/Object;
0 5 1 deadline J
1 5 3 t Ljava/lang/Thread;
MethodParameters:
Name Flags
blocker
deadline
public static java.lang.Object getBlocker(java.lang.Thread);
descriptor: (Ljava/lang/Thread;)Ljava/lang/Object;
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=4, locals=1, args_size=1
start local 0 0: aload 0
ifnonnull 2
1: new java.lang.NullPointerException
dup
invokespecial java.lang.NullPointerException.<init>:()V
athrow
2: StackMap locals:
StackMap stack:
getstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
aload 0
getstatic java.util.concurrent.locks.LockSupport.PARKBLOCKER:J
invokevirtual jdk.internal.misc.Unsafe.getObjectVolatile:(Ljava/lang/Object;J)Ljava/lang/Object;
areturn
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 3 0 t Ljava/lang/Thread;
MethodParameters:
Name Flags
t
public static void park();
descriptor: ()V
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=4, locals=0, args_size=0
0: getstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
iconst_0
lconst_0
invokevirtual jdk.internal.misc.Unsafe.park:(ZJ)V
1: return
LocalVariableTable:
Start End Slot Name Signature
public static void parkNanos(long);
descriptor: (J)V
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=4, locals=2, args_size=1
start local 0 0: lload 0
lconst_0
lcmp
ifle 2
1: getstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
iconst_0
lload 0
invokevirtual jdk.internal.misc.Unsafe.park:(ZJ)V
2: StackMap locals:
StackMap stack:
return
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 3 0 nanos J
MethodParameters:
Name Flags
nanos
public static void parkUntil(long);
descriptor: (J)V
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=4, locals=2, args_size=1
start local 0 0: getstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
iconst_1
lload 0
invokevirtual jdk.internal.misc.Unsafe.park:(ZJ)V
1: return
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 2 0 deadline J
MethodParameters:
Name Flags
deadline
static final int nextSecondarySeed();
descriptor: ()I
flags: (0x0018) ACC_STATIC, ACC_FINAL
Code:
stack=5, locals=2, args_size=0
0: invokestatic java.lang.Thread.currentThread:()Ljava/lang/Thread;
astore 1
start local 1 1: getstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
aload 1
getstatic java.util.concurrent.locks.LockSupport.SECONDARY:J
invokevirtual jdk.internal.misc.Unsafe.getInt:(Ljava/lang/Object;J)I
dup
istore 0
start local 0 2: ifeq 7
3: iload 0
iload 0
bipush 13
ishl
ixor
istore 0
4: iload 0
iload 0
bipush 17
iushr
ixor
istore 0
5: iload 0
iload 0
iconst_5
ishl
ixor
istore 0
6: goto 9
7: StackMap locals: int java.lang.Thread
StackMap stack:
invokestatic java.util.concurrent.ThreadLocalRandom.current:()Ljava/util/concurrent/ThreadLocalRandom;
invokevirtual java.util.concurrent.ThreadLocalRandom.nextInt:()I
dup
istore 0
ifne 9
8: iconst_1
istore 0
9: StackMap locals:
StackMap stack:
getstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
aload 1
getstatic java.util.concurrent.locks.LockSupport.SECONDARY:J
iload 0
invokevirtual jdk.internal.misc.Unsafe.putInt:(Ljava/lang/Object;JI)V
10: iload 0
ireturn
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
2 11 0 r I
1 11 1 t Ljava/lang/Thread;
static final long getThreadId(java.lang.Thread);
descriptor: (Ljava/lang/Thread;)J
flags: (0x0018) ACC_STATIC, ACC_FINAL
Code:
stack=4, locals=1, args_size=1
start local 0 0: getstatic java.util.concurrent.locks.LockSupport.U:Ljdk/internal/misc/Unsafe;
aload 0
getstatic java.util.concurrent.locks.LockSupport.TID:J
invokevirtual jdk.internal.misc.Unsafe.getLong:(Ljava/lang/Object;J)J
lreturn
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 1 0 thread Ljava/lang/Thread;
MethodParameters:
Name Flags
thread
}
SourceFile: "LockSupport.java"