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src/share/vm/runtime/stackValueCollection.cpp@7ee622712fcf (annotated)

src/share/vm/runtime/stackValueCollection.cpp

Tue, 04 Mar 2008 09:44:24 -0500

author

sbohne

date

Tue, 04 Mar 2008 09:44:24 -0500

changeset 493

7ee622712fcf

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6666698: EnableBiasedLocking with BiasedLockingStartupDelay can block Watcher thread
Summary: Enqueue VM_EnableBiasedLocking operation asynchronously
Reviewed-by: never, xlu, kbr, acorn

duke@435	1	/*
duke@435	2	* Copyright 2001-2005 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	# include "incls/_precompiled.incl"
duke@435	26	# include "incls/_stackValueCollection.cpp.incl"
duke@435	27
duke@435	28	jint StackValueCollection::int_at(int slot) const {
duke@435	29	intptr_t val = at(slot)->get_int();
duke@435	30	jint ival = *((jint*) (&val));
duke@435	31	return ival;
duke@435	32	}
duke@435	33
duke@435	34	jlong StackValueCollection::long_at(int slot) const {
duke@435	35	#ifdef _LP64
duke@435	36	return at(slot+1)->get_int();
duke@435	37	#else
duke@435	38	union {
duke@435	39	jlong jl;
duke@435	40	jint array[2];
duke@435	41	} value;
duke@435	42	// Interpreter stack is reversed in memory:
duke@435	43	// low memory location is in higher java local slot.
duke@435	44	value.array[0] = at(slot+1)->get_int();
duke@435	45	value.array[1] = at(slot )->get_int();
duke@435	46	return value.jl;
duke@435	47	#endif
duke@435	48	}
duke@435	49
duke@435	50	Handle StackValueCollection::obj_at(int slot) const {
duke@435	51	return at(slot)->get_obj();
duke@435	52	}
duke@435	53
duke@435	54	jfloat StackValueCollection::float_at(int slot) const {
duke@435	55	intptr_t res = at(slot)->get_int();
duke@435	56	return *((jfloat*) (&res));
duke@435	57	}
duke@435	58
duke@435	59	jdouble StackValueCollection::double_at(int slot) const {
duke@435	60	#ifdef _LP64
duke@435	61	intptr_t res = at(slot+1)->get_int();
duke@435	62	return *((jdouble*) (&res));
duke@435	63	#else
duke@435	64	union {
duke@435	65	jdouble jd;
duke@435	66	jint array[2];
duke@435	67	} value;
duke@435	68	// Interpreter stack is reversed in memory:
duke@435	69	// low memory location is in higher java local slot.
duke@435	70	value.array[0] = at(slot+1)->get_int();
duke@435	71	value.array[1] = at(slot )->get_int();
duke@435	72	return value.jd;
duke@435	73	#endif
duke@435	74	}
duke@435	75
duke@435	76	void StackValueCollection::set_int_at(int slot, jint value) {
duke@435	77	intptr_t val;
duke@435	78	*((jint*) (&val)) = value;
duke@435	79	at(slot)->set_int(val);
duke@435	80	}
duke@435	81
duke@435	82	void StackValueCollection::set_long_at(int slot, jlong value) {
duke@435	83	#ifdef _LP64
duke@435	84	at(slot+1)->set_int(value);
duke@435	85	#else
duke@435	86	union {
duke@435	87	jlong jl;
duke@435	88	jint array[2];
duke@435	89	} x;
duke@435	90	// Interpreter stack is reversed in memory:
duke@435	91	// low memory location is in higher java local slot.
duke@435	92	x.jl = value;
duke@435	93	at(slot+1)->set_int(x.array[0]);
duke@435	94	at(slot+0)->set_int(x.array[1]);
duke@435	95	#endif
duke@435	96	}
duke@435	97
duke@435	98	void StackValueCollection::set_obj_at(int slot, Handle value) {
duke@435	99	at(slot)->set_obj(value);
duke@435	100	}
duke@435	101
duke@435	102	void StackValueCollection::set_float_at(int slot, jfloat value) {
duke@435	103	#ifdef _LP64
duke@435	104	union {
duke@435	105	intptr_t jd;
duke@435	106	jint array[2];
duke@435	107	} val;
duke@435	108	// Interpreter stores 32 bit floats in first half of 64 bit word.
duke@435	109	val.array[0] = *(jint*)(&value);
duke@435	110	val.array[1] = 0;
duke@435	111	at(slot)->set_int(val.jd);
duke@435	112	#else
duke@435	113	at(slot)->set_int(*(jint*)(&value));
duke@435	114	#endif
duke@435	115	}
duke@435	116
duke@435	117	void StackValueCollection::set_double_at(int slot, jdouble value) {
duke@435	118	#ifdef _LP64
duke@435	119	at(slot+1)->set_int(*(intptr_t*)(&value));
duke@435	120	#else
duke@435	121	union {
duke@435	122	jdouble jd;
duke@435	123	jint array[2];
duke@435	124	} x;
duke@435	125	// Interpreter stack is reversed in memory:
duke@435	126	// low memory location is in higher java local slot.
duke@435	127	x.jd = value;
duke@435	128	at(slot+1)->set_int(x.array[0]);
duke@435	129	at(slot+0)->set_int(x.array[1]);
duke@435	130	#endif
duke@435	131	}
duke@435	132
duke@435	133	#ifndef PRODUCT
duke@435	134	void StackValueCollection::print() {
duke@435	135	for(int index = 0; index < size(); index++) {
duke@435	136	tty->print("\t %2d ", index);
duke@435	137	at(index)->print_on(tty);
duke@435	138	if( at(index )->type() == T_INT &&
duke@435	139	index+1 < size() &&
duke@435	140	at(index+1)->type() == T_INT ) {
duke@435	141	tty->print(" " INT64_FORMAT " (long)", long_at(index));
duke@435	142	tty->cr();
duke@435	143	tty->print("\t %.15e (double)", double_at(index));
duke@435	144	tty->print(" " PTR64_FORMAT " (longhex)", long_at(index));
duke@435	145	}
duke@435	146	tty->cr();
duke@435	147	}
duke@435	148	}
duke@435	149	#endif