java/15 : jdk.attach/sun/tools/attach/VirtualMachineImpl.class

VirtualMachineImpl
https://openjdk.java.net/
GPLv2 + Classpath Exception
public class sun.tools.attach.VirtualMachineImpl extends sun.tools.attach.HotSpotVirtualMachine
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: sun.tools.attach.VirtualMachineImpl
  super_class: sun.tools.attach.HotSpotVirtualMachine
{
  private static byte[] stub;
    descriptor: [B
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  private volatile long hProcess;
    descriptor: J
    flags: (0x0042) ACC_PRIVATE, ACC_VOLATILE

  static final boolean $assertionsDisabled;
    descriptor: Z
    flags: (0x1018) ACC_STATIC, ACC_FINAL, ACC_SYNTHETIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 38
            ldc Lsun/tools/attach/VirtualMachineImpl;
            invokevirtual java.lang.Class.desiredAssertionStatus:()Z
            ifne 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: putstatic sun.tools.attach.VirtualMachineImpl.$assertionsDisabled:Z
         3: .line 204
            ldc "attach"
            invokestatic java.lang.System.loadLibrary:(Ljava/lang/String;)V
         4: .line 205
            invokestatic sun.tools.attach.VirtualMachineImpl.init:()V
         5: .line 206
            invokestatic sun.tools.attach.VirtualMachineImpl.generateStub:()[B
            putstatic sun.tools.attach.VirtualMachineImpl.stub:[B
         6: .line 207
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  void <init>(com.sun.tools.attach.spi.AttachProvider, java.lang.String);
    descriptor: (Lcom/sun/tools/attach/spi/AttachProvider;Ljava/lang/String;)V
    flags: (0x0000) 
    Code:
      stack=6, locals=5, args_size=3
        start local 0 // sun.tools.attach.VirtualMachineImpl this
        start local 1 // com.sun.tools.attach.spi.AttachProvider provider
        start local 2 // java.lang.String id
         0: .line 48
            aload 0 /* this */
            aload 1 /* provider */
            aload 2 /* id */
            invokespecial sun.tools.attach.HotSpotVirtualMachine.<init>:(Lcom/sun/tools/attach/spi/AttachProvider;Ljava/lang/String;)V
         1: .line 52
            aload 2 /* id */
            invokestatic java.lang.Integer.parseInt:(Ljava/lang/String;)I
            istore 3 /* pid */
        start local 3 // int pid
         2: .line 53
            goto 5
        end local 3 // int pid
      StackMap locals: sun.tools.attach.VirtualMachineImpl com.sun.tools.attach.spi.AttachProvider java.lang.String
      StackMap stack: java.lang.NumberFormatException
         3: pop
         4: .line 54
            new com.sun.tools.attach.AttachNotSupportedException
            dup
            ldc "Invalid process identifier"
            invokespecial com.sun.tools.attach.AttachNotSupportedException.<init>:(Ljava/lang/String;)V
            athrow
        start local 3 // int pid
         5: .line 56
      StackMap locals: int
      StackMap stack:
            aload 0 /* this */
            iload 3 /* pid */
            invokestatic sun.tools.attach.VirtualMachineImpl.openProcess:(I)J
            putfield sun.tools.attach.VirtualMachineImpl.hProcess:J
         6: .line 62
            aload 0 /* this */
            getfield sun.tools.attach.VirtualMachineImpl.hProcess:J
            getstatic sun.tools.attach.VirtualMachineImpl.stub:[B
            aconst_null
            aconst_null
            iconst_0
            anewarray java.lang.Object
            invokestatic sun.tools.attach.VirtualMachineImpl.enqueue:(J[BLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V
         7: .line 63
            goto 10
      StackMap locals:
      StackMap stack: java.io.IOException
         8: astore 4 /* x */
        start local 4 // java.io.IOException x
         9: .line 64
            new com.sun.tools.attach.AttachNotSupportedException
            dup
            aload 4 /* x */
            invokevirtual java.io.IOException.getMessage:()Ljava/lang/String;
            invokespecial com.sun.tools.attach.AttachNotSupportedException.<init>:(Ljava/lang/String;)V
            athrow
        end local 4 // java.io.IOException x
        10: .line 66
      StackMap locals:
      StackMap stack:
            return
        end local 3 // int pid
        end local 2 // java.lang.String id
        end local 1 // com.sun.tools.attach.spi.AttachProvider provider
        end local 0 // sun.tools.attach.VirtualMachineImpl this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   11     0      this  Lsun/tools/attach/VirtualMachineImpl;
            0   11     1  provider  Lcom/sun/tools/attach/spi/AttachProvider;
            0   11     2        id  Ljava/lang/String;
            2    3     3       pid  I
            5   11     3       pid  I
            9   10     4         x  Ljava/io/IOException;
      Exception table:
        from    to  target  type
           1     2       3  Class java.lang.NumberFormatException
           6     7       8  Class java.io.IOException
    Exceptions:
      throws com.sun.tools.attach.AttachNotSupportedException, java.io.IOException
    MethodParameters:
          Name  Flags
      provider  
      id        

  public void detach();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=1
        start local 0 // sun.tools.attach.VirtualMachineImpl this
         0: .line 69
            aload 0 /* this */
            dup
            astore 1
            monitorenter
         1: .line 70
            aload 0 /* this */
            getfield sun.tools.attach.VirtualMachineImpl.hProcess:J
            ldc -1
            lcmp
            ifeq 4
         2: .line 71
            aload 0 /* this */
            getfield sun.tools.attach.VirtualMachineImpl.hProcess:J
            invokestatic sun.tools.attach.VirtualMachineImpl.closeProcess:(J)V
         3: .line 72
            aload 0 /* this */
            ldc -1
            putfield sun.tools.attach.VirtualMachineImpl.hProcess:J
         4: .line 69
      StackMap locals: sun.tools.attach.VirtualMachineImpl
      StackMap stack:
            aload 1
            monitorexit
         5: goto 8
      StackMap locals:
      StackMap stack: java.lang.Throwable
         6: aload 1
            monitorexit
         7: athrow
         8: .line 75
      StackMap locals:
      StackMap stack:
            return
        end local 0 // sun.tools.attach.VirtualMachineImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    9     0  this  Lsun/tools/attach/VirtualMachineImpl;
      Exception table:
        from    to  target  type
           1     5       6  any
           6     7       6  any
    Exceptions:
      throws java.io.IOException

  java.io.InputStream execute(java.lang.String, java.lang.Object[]);
    descriptor: (Ljava/lang/String;[Ljava/lang/Object;)Ljava/io/InputStream;
    flags: (0x0080) ACC_VARARGS
    Code:
      stack=6, locals=13, args_size=3
        start local 0 // sun.tools.attach.VirtualMachineImpl this
        start local 1 // java.lang.String cmd
        start local 2 // java.lang.Object[] args
         0: .line 80
            getstatic sun.tools.attach.VirtualMachineImpl.$assertionsDisabled:Z
            ifne 1
            aload 2 /* args */
            arraylength
            iconst_3
            if_icmple 1
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         1: .line 83
      StackMap locals:
      StackMap stack:
            new java.util.Random
            dup
            invokespecial java.util.Random.<init>:()V
            astore 3 /* rnd */
        start local 3 // java.util.Random rnd
         2: .line 84
            aload 3 /* rnd */
            invokevirtual java.util.Random.nextInt:()I
            istore 4 /* r */
        start local 4 // int r
         3: .line 85
            ldc "\\\\.\\pipe\\javatool"
            astore 5 /* pipeprefix */
        start local 5 // java.lang.String pipeprefix
         4: .line 86
            new java.lang.StringBuilder
            dup
            aload 5 /* pipeprefix */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            iload 4 /* r */
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 6 /* pipename */
        start local 6 // java.lang.String pipename
         5: .line 89
            aload 6 /* pipename */
            invokestatic sun.tools.attach.VirtualMachineImpl.createPipe:(Ljava/lang/String;)J
            lstore 7 /* hPipe */
        start local 7 // long hPipe
         6: .line 90
            goto 11
        end local 7 // long hPipe
      StackMap locals: sun.tools.attach.VirtualMachineImpl java.lang.String java.lang.Object[] java.util.Random int java.lang.String java.lang.String
      StackMap stack: java.io.IOException
         7: pop
         8: .line 92
            aload 3 /* rnd */
            invokevirtual java.util.Random.nextInt:()I
            istore 4 /* r */
         9: .line 93
            new java.lang.StringBuilder
            dup
            aload 5 /* pipeprefix */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            iload 4 /* r */
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 6 /* pipename */
        10: .line 94
            aload 6 /* pipename */
            invokestatic sun.tools.attach.VirtualMachineImpl.createPipe:(Ljava/lang/String;)J
            lstore 7 /* hPipe */
        start local 7 // long hPipe
        11: .line 99
      StackMap locals: long
      StackMap stack:
            aload 0 /* this */
            getfield sun.tools.attach.VirtualMachineImpl.hProcess:J
            ldc -1
            lcmp
            ifne 14
        12: .line 100
            lload 7 /* hPipe */
            invokestatic sun.tools.attach.VirtualMachineImpl.closePipe:(J)V
        13: .line 101
            new java.io.IOException
            dup
            ldc "Detached from target VM"
            invokespecial java.io.IOException.<init>:(Ljava/lang/String;)V
            athrow
        14: .line 106
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield sun.tools.attach.VirtualMachineImpl.hProcess:J
            getstatic sun.tools.attach.VirtualMachineImpl.stub:[B
            aload 1 /* cmd */
            aload 6 /* pipename */
            aload 2 /* args */
            invokestatic sun.tools.attach.VirtualMachineImpl.enqueue:(J[BLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V
        15: .line 110
            lload 7 /* hPipe */
            invokestatic sun.tools.attach.VirtualMachineImpl.connectPipe:(J)V
        16: .line 113
            new sun.tools.attach.VirtualMachineImpl$PipedInputStream
            dup
            aload 0 /* this */
            lload 7 /* hPipe */
            invokespecial sun.tools.attach.VirtualMachineImpl$PipedInputStream.<init>:(Lsun/tools/attach/VirtualMachineImpl;J)V
            astore 9 /* in */
        start local 9 // sun.tools.attach.VirtualMachineImpl$PipedInputStream in
        17: .line 116
            aload 0 /* this */
            aload 9 /* in */
            invokevirtual sun.tools.attach.VirtualMachineImpl.readInt:(Ljava/io/InputStream;)I
            istore 10 /* status */
        start local 10 // int status
        18: .line 117
            iload 10 /* status */
            ifeq 29
        19: .line 119
            aload 0 /* this */
            aload 9 /* in */
            invokevirtual sun.tools.attach.VirtualMachineImpl.readErrorMessage:(Ljava/io/InputStream;)Ljava/lang/String;
            astore 11 /* message */
        start local 11 // java.lang.String message
        20: .line 120
            aload 9 /* in */
            invokevirtual sun.tools.attach.VirtualMachineImpl$PipedInputStream.close:()V
        21: .line 122
            aload 1 /* cmd */
            ldc "load"
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifeq 26
        22: .line 123
            ldc "Failed to load agent library"
            astore 12 /* msg */
        start local 12 // java.lang.String msg
        23: .line 124
            aload 11 /* message */
            invokevirtual java.lang.String.isEmpty:()Z
            ifne 25
        24: .line 125
            new java.lang.StringBuilder
            dup
            aload 12 /* msg */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc ": "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            aload 11 /* message */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 12 /* msg */
        25: .line 126
      StackMap locals: sun.tools.attach.VirtualMachineImpl java.lang.String java.lang.Object[] java.util.Random int java.lang.String java.lang.String long sun.tools.attach.VirtualMachineImpl$PipedInputStream int java.lang.String java.lang.String
      StackMap stack:
            new com.sun.tools.attach.AgentLoadException
            dup
            aload 12 /* msg */
            invokespecial com.sun.tools.attach.AgentLoadException.<init>:(Ljava/lang/String;)V
            athrow
        end local 12 // java.lang.String msg
        26: .line 128
      StackMap locals:
      StackMap stack:
            aload 11 /* message */
            invokevirtual java.lang.String.isEmpty:()Z
            ifeq 28
        27: .line 129
            ldc "Command failed in target VM"
            astore 11 /* message */
        28: .line 130
      StackMap locals:
      StackMap stack:
            new com.sun.tools.attach.AttachOperationFailedException
            dup
            aload 11 /* message */
            invokespecial com.sun.tools.attach.AttachOperationFailedException.<init>:(Ljava/lang/String;)V
            athrow
        end local 11 // java.lang.String message
        29: .line 135
      StackMap locals:
      StackMap stack:
            aload 9 /* in */
        30: areturn
        end local 10 // int status
        end local 9 // sun.tools.attach.VirtualMachineImpl$PipedInputStream in
        31: .line 137
      StackMap locals: sun.tools.attach.VirtualMachineImpl java.lang.String java.lang.Object[] java.util.Random int java.lang.String java.lang.String long
      StackMap stack: java.io.IOException
            astore 9 /* ioe */
        start local 9 // java.io.IOException ioe
        32: .line 138
            lload 7 /* hPipe */
            invokestatic sun.tools.attach.VirtualMachineImpl.closePipe:(J)V
        33: .line 139
            aload 9 /* ioe */
            athrow
        end local 9 // java.io.IOException ioe
        end local 7 // long hPipe
        end local 6 // java.lang.String pipename
        end local 5 // java.lang.String pipeprefix
        end local 4 // int r
        end local 3 // java.util.Random rnd
        end local 2 // java.lang.Object[] args
        end local 1 // java.lang.String cmd
        end local 0 // sun.tools.attach.VirtualMachineImpl this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0   34     0        this  Lsun/tools/attach/VirtualMachineImpl;
            0   34     1         cmd  Ljava/lang/String;
            0   34     2        args  [Ljava/lang/Object;
            2   34     3         rnd  Ljava/util/Random;
            3   34     4           r  I
            4   34     5  pipeprefix  Ljava/lang/String;
            5   34     6    pipename  Ljava/lang/String;
            6    7     7       hPipe  J
           11   34     7       hPipe  J
           17   31     9          in  Lsun/tools/attach/VirtualMachineImpl$PipedInputStream;
           18   31    10      status  I
           20   29    11     message  Ljava/lang/String;
           23   26    12         msg  Ljava/lang/String;
           32   34     9         ioe  Ljava/io/IOException;
      Exception table:
        from    to  target  type
           5     6       7  Class java.io.IOException
          14    30      31  Class java.io.IOException
    Exceptions:
      throws com.sun.tools.attach.AgentLoadException, java.io.IOException
    MethodParameters:
      Name  Flags
      cmd   
      args  

  static native void init();
    descriptor: ()V
    flags: (0x0108) ACC_STATIC, ACC_NATIVE

  static native byte[] generateStub();
    descriptor: ()[B
    flags: (0x0108) ACC_STATIC, ACC_NATIVE

  static native long openProcess(int);
    descriptor: (I)J
    flags: (0x0108) ACC_STATIC, ACC_NATIVE
    Exceptions:
      throws java.io.IOException
    MethodParameters:
      Name  Flags
      pid   

  static native void closeProcess(long);
    descriptor: (J)V
    flags: (0x0108) ACC_STATIC, ACC_NATIVE
    Exceptions:
      throws java.io.IOException
    MethodParameters:
          Name  Flags
      hProcess  

  static native long createPipe(java.lang.String);
    descriptor: (Ljava/lang/String;)J
    flags: (0x0108) ACC_STATIC, ACC_NATIVE
    Exceptions:
      throws java.io.IOException
    MethodParameters:
      Name  Flags
      name  

  static native void closePipe(long);
    descriptor: (J)V
    flags: (0x0108) ACC_STATIC, ACC_NATIVE
    Exceptions:
      throws java.io.IOException
    MethodParameters:
       Name  Flags
      hPipe  

  static native void connectPipe(long);
    descriptor: (J)V
    flags: (0x0108) ACC_STATIC, ACC_NATIVE
    Exceptions:
      throws java.io.IOException
    MethodParameters:
       Name  Flags
      hPipe  

  static native int readPipe(long, byte[], int, int);
    descriptor: (J[BII)I
    flags: (0x0108) ACC_STATIC, ACC_NATIVE
    Exceptions:
      throws java.io.IOException
    MethodParameters:
        Name  Flags
      hPipe   
      buf     
      off     
      buflen  

  static native void enqueue(long, byte[], java.lang.String, java.lang.String, java.lang.Object[]);
    descriptor: (J[BLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V
    flags: (0x0188) ACC_STATIC, ACC_VARARGS, ACC_NATIVE
    Exceptions:
      throws java.io.IOException
    MethodParameters:
          Name  Flags
      hProcess  
      stub      
      cmd       
      pipename  
      args      
}
SourceFile: "VirtualMachineImpl.java"
NestMembers:
  sun.tools.attach.VirtualMachineImpl$PipedInputStream
InnerClasses:
  private PipedInputStream = sun.tools.attach.VirtualMachineImpl$PipedInputStream of sun.tools.attach.VirtualMachineImpl
/

java/ 15/ jdk.attach/sun/tools/attach/VirtualMachineImpl.class
