agent/src/share/classes/sun/jvm/hotspot/oops/ConstMethod.java
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*** 1,7 ****
/*
! * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
--- 1,7 ----
/*
! * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*** 45,70 ****
// anon-enum constants for _flags.
private static int HAS_LINENUMBER_TABLE;
private static int HAS_CHECKED_EXCEPTIONS;
private static int HAS_LOCALVARIABLE_TABLE;
private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
Type type = db.lookupType("constMethodOopDesc");
// Backpointer to non-const methodOop
method = new OopField(type.getOopField("_method"), 0);
- // The exception handler table. 4-tuples of ints [start_pc, end_pc,
- // handler_pc, catch_type index] For methods with no exceptions the
- // table is pointing to Universe::the_empty_int_array
- exceptionTable = new OopField(type.getOopField("_exception_table"), 0);
constMethodSize = new CIntField(type.getCIntegerField("_constMethod_size"), 0);
flags = new ByteField(type.getJByteField("_flags"), 0);
// enum constants for flags
HAS_LINENUMBER_TABLE = db.lookupIntConstant("constMethodOopDesc::_has_linenumber_table").intValue();
HAS_CHECKED_EXCEPTIONS = db.lookupIntConstant("constMethodOopDesc::_has_checked_exceptions").intValue();
HAS_LOCALVARIABLE_TABLE = db.lookupIntConstant("constMethodOopDesc::_has_localvariable_table").intValue();
// Size of Java bytecodes allocated immediately after constMethodOop.
codeSize = new CIntField(type.getCIntegerField("_code_size"), 0);
nameIndex = new CIntField(type.getCIntegerField("_name_index"), 0);
signatureIndex = new CIntField(type.getCIntegerField("_signature_index"), 0);
--- 45,68 ----
// anon-enum constants for _flags.
private static int HAS_LINENUMBER_TABLE;
private static int HAS_CHECKED_EXCEPTIONS;
private static int HAS_LOCALVARIABLE_TABLE;
+ private static int HAS_EXCEPTION_TABLE;
private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
Type type = db.lookupType("constMethodOopDesc");
// Backpointer to non-const methodOop
method = new OopField(type.getOopField("_method"), 0);
constMethodSize = new CIntField(type.getCIntegerField("_constMethod_size"), 0);
flags = new ByteField(type.getJByteField("_flags"), 0);
// enum constants for flags
HAS_LINENUMBER_TABLE = db.lookupIntConstant("constMethodOopDesc::_has_linenumber_table").intValue();
HAS_CHECKED_EXCEPTIONS = db.lookupIntConstant("constMethodOopDesc::_has_checked_exceptions").intValue();
HAS_LOCALVARIABLE_TABLE = db.lookupIntConstant("constMethodOopDesc::_has_localvariable_table").intValue();
+ HAS_EXCEPTION_TABLE = db.lookupIntConstant("constMethodOopDesc::_has_exception_table").intValue();
// Size of Java bytecodes allocated immediately after constMethodOop.
codeSize = new CIntField(type.getCIntegerField("_code_size"), 0);
nameIndex = new CIntField(type.getCIntegerField("_name_index"), 0);
signatureIndex = new CIntField(type.getCIntegerField("_signature_index"), 0);
*** 76,94 ****
type = db.lookupType("CheckedExceptionElement");
checkedExceptionElementSize = type.getSize();
type = db.lookupType("LocalVariableTableElement");
localVariableTableElementSize = type.getSize();
}
ConstMethod(OopHandle handle, ObjectHeap heap) {
super(handle, heap);
}
// Fields
private static OopField method;
- private static OopField exceptionTable;
private static CIntField constMethodSize;
private static ByteField flags;
private static CIntField codeSize;
private static CIntField nameIndex;
private static CIntField signatureIndex;
--- 74,94 ----
type = db.lookupType("CheckedExceptionElement");
checkedExceptionElementSize = type.getSize();
type = db.lookupType("LocalVariableTableElement");
localVariableTableElementSize = type.getSize();
+
+ type = db.lookupType("ExceptionTableElement");
+ exceptionTableElementSize = type.getSize();
}
ConstMethod(OopHandle handle, ObjectHeap heap) {
super(handle, heap);
}
// Fields
private static OopField method;
private static CIntField constMethodSize;
private static ByteField flags;
private static CIntField codeSize;
private static CIntField nameIndex;
private static CIntField signatureIndex;
*** 97,116 ****
// start of bytecode
private static long bytecodeOffset;
private static long checkedExceptionElementSize;
private static long localVariableTableElementSize;
// Accessors for declared fields
public Method getMethod() {
return (Method) method.getValue(this);
}
- public TypeArray getExceptionTable() {
- return (TypeArray) exceptionTable.getValue(this);
- }
-
public long getConstMethodSize() {
return constMethodSize.getValue(this);
}
public byte getFlags() {
--- 97,113 ----
// start of bytecode
private static long bytecodeOffset;
private static long checkedExceptionElementSize;
private static long localVariableTableElementSize;
+ private static long exceptionTableElementSize;
// Accessors for declared fields
public Method getMethod() {
return (Method) method.getValue(this);
}
public long getConstMethodSize() {
return constMethodSize.getValue(this);
}
public byte getFlags() {
*** 222,232 ****
public void iterateFields(OopVisitor visitor, boolean doVMFields) {
super.iterateFields(visitor, doVMFields);
if (doVMFields) {
visitor.doOop(method, true);
- visitor.doOop(exceptionTable, true);
visitor.doCInt(constMethodSize, true);
visitor.doByte(flags, true);
visitor.doCInt(codeSize, true);
visitor.doCInt(nameIndex, true);
visitor.doCInt(signatureIndex, true);
--- 219,228 ----
*** 313,322 ****
--- 309,335 ----
offset += localVariableTableElementSize;
}
return ret;
}
+ public boolean hasExceptionTable() {
+ return (getFlags() & HAS_EXCEPTION_TABLE) != 0;
+ }
+
+ public ExceptionTableElement[] getExceptionTable() {
+ if (Assert.ASSERTS_ENABLED) {
+ Assert.that(hasExceptionTable(), "should only be called if table is present");
+ }
+ ExceptionTableElement[] ret = new ExceptionTableElement[getExceptionTableLength()];
+ long offset = offsetOfExceptionTable();
+ for (int i = 0; i < ret.length; i++) {
+ ret[i] = new ExceptionTableElement(getHandle(), offset);
+ offset += exceptionTableElementSize;
+ }
+ return ret;
+ }
+
public boolean hasCheckedExceptions() {
return (getFlags() & HAS_CHECKED_EXCEPTIONS) != 0;
}
public CheckedExceptionElement[] getCheckedExceptions() {
*** 402,412 ****
// Offset of local variable table length
private long offsetOfLocalVariableTableLength() {
if (Assert.ASSERTS_ENABLED) {
Assert.that(hasLocalVariableTable(), "should only be called if table is present");
}
! if (hasCheckedExceptions()) {
return offsetOfCheckedExceptions() - 2;
} else {
return offsetOfLastU2Element();
}
}
--- 415,428 ----
// Offset of local variable table length
private long offsetOfLocalVariableTableLength() {
if (Assert.ASSERTS_ENABLED) {
Assert.that(hasLocalVariableTable(), "should only be called if table is present");
}
!
! if (hasExceptionTable()) {
! return offsetOfExceptionTable() - 2;
! } else if (hasCheckedExceptions()) {
return offsetOfCheckedExceptions() - 2;
} else {
return offsetOfLastU2Element();
}
}
*** 419,424 ****
--- 435,469 ----
}
offset -= length * localVariableTableElementSize;
return offset;
}
+ private int getExceptionTableLength() {
+ if (hasExceptionTable()) {
+ return (int) getHandle().getCIntegerAt(offsetOfExceptionTableLength(), 2, true);
+ } else {
+ return 0;
+ }
+ }
+
+ private long offsetOfExceptionTableLength() {
+ if (Assert.ASSERTS_ENABLED) {
+ Assert.that(hasExceptionTable(), "should only be called if table is present");
+ }
+ if (hasCheckedExceptions()) {
+ return offsetOfCheckedExceptions() - 2;
+ } else {
+ return offsetOfLastU2Element();
+ }
+ }
+
+ private long offsetOfExceptionTable() {
+ long offset = offsetOfExceptionTableLength();
+ long length = getExceptionTableLength();
+ if (Assert.ASSERTS_ENABLED) {
+ Assert.that(length > 0, "should only be called if table is present");
+ }
+ offset -= length * exceptionTableElementSize;
+ return offset;
+ }
+
}