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src/share/vm/utilities/constantTag.hpp@0414c1049f15 (annotated)

src/share/vm/utilities/constantTag.hpp

Thu, 11 Feb 2010 15:52:19 -0800

author

iveresov

date

Thu, 11 Feb 2010 15:52:19 -0800

changeset 1696

0414c1049f15

parent 1573

dd57230ba8fe

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6923991: G1: improve scalability of RSet scanning
Summary: Implemented block-based work stealing. Moved copying during the rset scanning phase to the main copying phase. Made the size of rset table depend on the region size.
Reviewed-by: apetrusenko, tonyp

duke@435	1	/*
xdono@905	2	* Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// constant tags in Java .class files
duke@435	26
duke@435	27
duke@435	28	enum {
duke@435	29	// See jvm.h for shared JVM_CONSTANT_XXX tags
duke@435	30	// NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
duke@435	31	// Hotspot specific tags
duke@435	32	JVM_CONSTANT_Invalid = 0, // For bad value initialization
duke@435	33	JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course)
duke@435	34	JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use
duke@435	35	JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool
duke@435	36	JVM_CONSTANT_UnresolvedString = 102, // Temporary tag until actual use
duke@435	37	JVM_CONSTANT_StringIndex = 103, // Temporary tag while constructing constant pool
duke@435	38	JVM_CONSTANT_UnresolvedClassInError = 104, // Error tag due to resolution error
twisti@1573	39	JVM_CONSTANT_Object = 105, // Required for BoundMethodHandle arguments.
twisti@1573	40	JVM_CONSTANT_InternalMax = 105 // Last implementation tag
duke@435	41	};
duke@435	42
duke@435	43
duke@435	44	class constantTag VALUE_OBJ_CLASS_SPEC {
duke@435	45	private:
duke@435	46	jbyte _tag;
duke@435	47	public:
duke@435	48	bool is_klass() const { return _tag == JVM_CONSTANT_Class; }
duke@435	49	bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; }
duke@435	50	bool is_method() const { return _tag == JVM_CONSTANT_Methodref; }
duke@435	51	bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; }
duke@435	52	bool is_string() const { return _tag == JVM_CONSTANT_String; }
duke@435	53	bool is_int() const { return _tag == JVM_CONSTANT_Integer; }
duke@435	54	bool is_float() const { return _tag == JVM_CONSTANT_Float; }
duke@435	55	bool is_long() const { return _tag == JVM_CONSTANT_Long; }
duke@435	56	bool is_double() const { return _tag == JVM_CONSTANT_Double; }
duke@435	57	bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; }
duke@435	58	bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; }
duke@435	59
duke@435	60	bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; }
duke@435	61
duke@435	62	bool is_unresolved_klass() const {
duke@435	63	return _tag == JVM_CONSTANT_UnresolvedClass || _tag == JVM_CONSTANT_UnresolvedClassInError;
duke@435	64	}
duke@435	65
duke@435	66	bool is_unresolved_klass_in_error() const {
duke@435	67	return _tag == JVM_CONSTANT_UnresolvedClassInError;
duke@435	68	}
duke@435	69
duke@435	70	bool is_klass_index() const { return _tag == JVM_CONSTANT_ClassIndex; }
duke@435	71	bool is_unresolved_string() const { return _tag == JVM_CONSTANT_UnresolvedString; }
duke@435	72	bool is_string_index() const { return _tag == JVM_CONSTANT_StringIndex; }
duke@435	73
twisti@1573	74	bool is_object() const { return _tag == JVM_CONSTANT_Object; }
twisti@1573	75
duke@435	76	bool is_klass_reference() const { return is_klass_index() || is_unresolved_klass(); }
jrose@866	77	bool is_klass_or_reference() const{ return is_klass() || is_klass_reference(); }
duke@435	78	bool is_field_or_method() const { return is_field() || is_method() || is_interface_method(); }
duke@435	79	bool is_symbol() const { return is_utf8(); }
duke@435	80
duke@435	81	constantTag(jbyte tag) {
duke@435	82	assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) ||
duke@435	83	(tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag");
duke@435	84	_tag = tag;
duke@435	85	}
duke@435	86
duke@435	87	jbyte value() { return _tag; }
duke@435	88
duke@435	89	void print_on(outputStream* st) const PRODUCT_RETURN;
duke@435	90	};