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src/share/vm/oops/typeArrayOop.hpp@c18cbe5936b8 (annotated)

src/share/vm/oops/typeArrayOop.hpp

Thu, 27 May 2010 19:08:38 -0700

author

trims

date

Thu, 27 May 2010 19:08:38 -0700

changeset 1907

c18cbe5936b8

parent 435

a61af66fc99e

child 2314

f95d63e2154a

permissions

-rw-r--r--

6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair

duke@435	1	/*
trims@1907	2	* Copyright (c) 1997, 2007, Oracle and/or its affiliates. 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	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// A typeArrayOop is an array containing basic types (non oop elements).
duke@435	26	// It is used for arrays of {characters, singles, doubles, bytes, shorts, integers, longs}
duke@435	27	#include <limits.h>
duke@435	28
duke@435	29	class typeArrayOopDesc : public arrayOopDesc {
duke@435	30	protected:
duke@435	31	jchar* char_base() const { return (jchar*) base(T_CHAR); }
duke@435	32	jboolean* bool_base() const { return (jboolean*)base(T_BOOLEAN); }
duke@435	33	jbyte* byte_base() const { return (jbyte*) base(T_BYTE); }
duke@435	34	jint* int_base() const { return (jint*) base(T_INT); }
duke@435	35	jlong* long_base() const { return (jlong*) base(T_LONG); }
duke@435	36	jshort* short_base() const { return (jshort*) base(T_SHORT); }
duke@435	37	jfloat* float_base() const { return (jfloat*) base(T_FLOAT); }
duke@435	38	jdouble* double_base() const { return (jdouble*) base(T_DOUBLE); }
duke@435	39
duke@435	40	friend class typeArrayKlass;
duke@435	41
duke@435	42	public:
duke@435	43	jbyte* byte_at_addr(int which) const {
duke@435	44	assert(is_within_bounds(which), "index out of bounds");
duke@435	45	return &byte_base()[which];
duke@435	46	}
duke@435	47
duke@435	48	jboolean* bool_at_addr(int which) const {
duke@435	49	assert(is_within_bounds(which), "index out of bounds");
duke@435	50	return &bool_base()[which];
duke@435	51	}
duke@435	52
duke@435	53	jchar* char_at_addr(int which) const {
duke@435	54	assert(is_within_bounds(which), "index out of bounds");
duke@435	55	return &char_base()[which];
duke@435	56	}
duke@435	57
duke@435	58	jint* int_at_addr(int which) const {
duke@435	59	assert(is_within_bounds(which), "index out of bounds");
duke@435	60	return &int_base()[which];
duke@435	61	}
duke@435	62
duke@435	63	jshort* short_at_addr(int which) const {
duke@435	64	assert(is_within_bounds(which), "index out of bounds");
duke@435	65	return &short_base()[which];
duke@435	66	}
duke@435	67
duke@435	68	jushort* ushort_at_addr(int which) const { // for field descriptor arrays
duke@435	69	assert(is_within_bounds(which), "index out of bounds");
duke@435	70	return (jushort*) &short_base()[which];
duke@435	71	}
duke@435	72
duke@435	73	jlong* long_at_addr(int which) const {
duke@435	74	assert(is_within_bounds(which), "index out of bounds");
duke@435	75	return &long_base()[which];
duke@435	76	}
duke@435	77
duke@435	78	jfloat* float_at_addr(int which) const {
duke@435	79	assert(is_within_bounds(which), "index out of bounds");
duke@435	80	return &float_base()[which];
duke@435	81	}
duke@435	82
duke@435	83	jdouble* double_at_addr(int which) const {
duke@435	84	assert(is_within_bounds(which), "index out of bounds");
duke@435	85	return &double_base()[which];
duke@435	86	}
duke@435	87
duke@435	88	jbyte byte_at(int which) const { return *byte_at_addr(which); }
duke@435	89	void byte_at_put(int which, jbyte contents) { *byte_at_addr(which) = contents; }
duke@435	90
duke@435	91	jboolean bool_at(int which) const { return *bool_at_addr(which); }
duke@435	92	void bool_at_put(int which, jboolean contents) { *bool_at_addr(which) = contents; }
duke@435	93
duke@435	94	jchar char_at(int which) const { return *char_at_addr(which); }
duke@435	95	void char_at_put(int which, jchar contents) { *char_at_addr(which) = contents; }
duke@435	96
duke@435	97	jint int_at(int which) const { return *int_at_addr(which); }
duke@435	98	void int_at_put(int which, jint contents) { *int_at_addr(which) = contents; }
duke@435	99
duke@435	100	jshort short_at(int which) const { return *short_at_addr(which); }
duke@435	101	void short_at_put(int which, jshort contents) { *short_at_addr(which) = contents; }
duke@435	102
duke@435	103	jushort ushort_at(int which) const { return *ushort_at_addr(which); }
duke@435	104	void ushort_at_put(int which, jushort contents) { *ushort_at_addr(which) = contents; }
duke@435	105
duke@435	106	jlong long_at(int which) const { return *long_at_addr(which); }
duke@435	107	void long_at_put(int which, jlong contents) { *long_at_addr(which) = contents; }
duke@435	108
duke@435	109	jfloat float_at(int which) const { return *float_at_addr(which); }
duke@435	110	void float_at_put(int which, jfloat contents) { *float_at_addr(which) = contents; }
duke@435	111
duke@435	112	jdouble double_at(int which) const { return *double_at_addr(which); }
duke@435	113	void double_at_put(int which, jdouble contents) { *double_at_addr(which) = contents; }
duke@435	114
duke@435	115	jbyte byte_at_acquire(int which) const { return OrderAccess::load_acquire(byte_at_addr(which)); }
duke@435	116	void release_byte_at_put(int which, jbyte contents) { OrderAccess::release_store(byte_at_addr(which), contents); }
duke@435	117
duke@435	118	// Sizing
duke@435	119
duke@435	120	// Returns the number of words necessary to hold an array of "len"
duke@435	121	// elements each of the given "byte_size".
duke@435	122	private:
duke@435	123	static int object_size(int lh, int length) {
duke@435	124	int instance_header_size = Klass::layout_helper_header_size(lh);
duke@435	125	int element_shift = Klass::layout_helper_log2_element_size(lh);
duke@435	126	DEBUG_ONLY(BasicType etype = Klass::layout_helper_element_type(lh));
duke@435	127	assert(length <= arrayOopDesc::max_array_length(etype), "no overflow");
duke@435	128
duke@435	129	julong size_in_bytes = length;
duke@435	130	size_in_bytes <<= element_shift;
duke@435	131	size_in_bytes += instance_header_size;
duke@435	132	julong size_in_words = ((size_in_bytes + (HeapWordSize-1)) >> LogHeapWordSize);
duke@435	133	assert(size_in_words <= (julong)max_jint, "no overflow");
duke@435	134
duke@435	135	return align_object_size((intptr_t)size_in_words);
duke@435	136	}
duke@435	137
duke@435	138	public:
duke@435	139	int object_size() {
duke@435	140	typeArrayKlass* tk = typeArrayKlass::cast(klass());
duke@435	141	return object_size(tk->layout_helper(), length());
duke@435	142	}
duke@435	143	};