• file
• revisions
• annotate
• diff
• comparison
• raw

src/share/vm/oops/oop.cpp@f258c5828eb8 (annotated)

src/share/vm/oops/oop.cpp

Mon, 29 Apr 2013 16:13:57 -0400

author

hseigel

date

Mon, 29 Apr 2013 16:13:57 -0400

changeset 4987

f258c5828eb8

parent 4299

f34d701e952e

child 4993

746b070f5022

permissions

-rw-r--r--

8011773: Some tests on Interned String crashed JVM with OOM
Summary: Instead of terminating the VM, throw OutOfMemoryError exceptions.
Reviewed-by: coleenp, dholmes

duke@435	1	/*
hseigel@4987	2	* Copyright (c) 1997, 2013, 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
stefank@2314	25	#include "precompiled.hpp"
coleenp@4037	26	#include "classfile/altHashing.hpp"
stefank@2314	27	#include "classfile/javaClasses.hpp"
stefank@2314	28	#include "oops/oop.inline.hpp"
stefank@2314	29	#include "runtime/handles.inline.hpp"
stefank@4299	30	#include "runtime/thread.inline.hpp"
stefank@2314	31	#include "utilities/copy.hpp"
duke@435	32
duke@435	33	bool always_do_update_barrier = false;
duke@435	34
duke@435	35	BarrierSet* oopDesc::_bs = NULL;
duke@435	36
duke@435	37	void oopDesc::print_on(outputStream* st) const {
duke@435	38	if (this == NULL) {
duke@435	39	st->print_cr("NULL");
duke@435	40	} else {
coleenp@4037	41	klass()->oop_print_on(oop(this), st);
duke@435	42	}
duke@435	43	}
duke@435	44
duke@435	45	void oopDesc::print_address_on(outputStream* st) const {
duke@435	46	if (PrintOopAddress) {
jrose@1100	47	st->print("{"INTPTR_FORMAT"}", this);
duke@435	48	}
duke@435	49	}
duke@435	50
duke@435	51	void oopDesc::print() { print_on(tty); }
duke@435	52
duke@435	53	void oopDesc::print_address() { print_address_on(tty); }
duke@435	54
duke@435	55	char* oopDesc::print_string() {
jrose@1590	56	stringStream st;
jrose@1590	57	print_on(&st);
jrose@1590	58	return st.as_string();
jrose@1590	59	}
jrose@1590	60
jrose@1590	61	void oopDesc::print_value() {
jrose@1590	62	print_value_on(tty);
duke@435	63	}
duke@435	64
duke@435	65	char* oopDesc::print_value_string() {
jrose@1590	66	char buf[100];
jrose@1590	67	stringStream st(buf, sizeof(buf));
jrose@1590	68	print_value_on(&st);
jrose@1590	69	return st.as_string();
duke@435	70	}
duke@435	71
jrose@1590	72	void oopDesc::print_value_on(outputStream* st) const {
jrose@1590	73	oop obj = oop(this);
jrose@1590	74	if (this == NULL) {
jrose@1590	75	st->print("NULL");
jrose@1590	76	} else if (java_lang_String::is_instance(obj)) {
jrose@1590	77	java_lang_String::print(obj, st);
jrose@1590	78	if (PrintOopAddress) print_address_on(st);
jrose@1590	79	} else {
coleenp@4037	80	klass()->oop_print_value_on(obj, st);
jrose@1590	81	}
jrose@1590	82	}
jrose@1590	83
duke@435	84
duke@435	85	void oopDesc::verify_on(outputStream* st) {
duke@435	86	if (this != NULL) {
coleenp@4037	87	klass()->oop_verify_on(this, st);
duke@435	88	}
duke@435	89	}
duke@435	90
duke@435	91
duke@435	92	void oopDesc::verify() {
duke@435	93	verify_on(tty);
duke@435	94	}
duke@435	95
duke@435	96	intptr_t oopDesc::slow_identity_hash() {
duke@435	97	// slow case; we have to acquire the micro lock in order to locate the header
duke@435	98	ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY
duke@435	99	HandleMark hm;
coleenp@4037	100	Handle object(this);
duke@435	101	return ObjectSynchronizer::identity_hash_value_for(object);
duke@435	102	}
duke@435	103
coleenp@4037	104	// When String table needs to rehash
coleenp@4037	105	unsigned int oopDesc::new_hash(jint seed) {
hseigel@4987	106	EXCEPTION_MARK;
coleenp@4037	107	ResourceMark rm;
coleenp@4037	108	int length;
hseigel@4987	109	jchar* chars = java_lang_String::as_unicode_string(this, length, THREAD);
hseigel@4987	110	if (chars != NULL) {
hseigel@4987	111	// Use alternate hashing algorithm on the string
hseigel@4987	112	return AltHashing::murmur3_32(seed, chars, length);
hseigel@4987	113	} else {
hseigel@4987	114	vm_exit_out_of_memory(length, "unable to create Unicode strings for String table rehash");
hseigel@4987	115	return 0;
hseigel@4987	116	}
coleenp@4037	117	}
coleenp@4037	118
duke@435	119	VerifyOopClosure VerifyOopClosure::verify_oop;
coleenp@548	120
coleenp@548	121	void VerifyOopClosure::do_oop(oop* p) { VerifyOopClosure::do_oop_work(p); }
coleenp@548	122	void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p); }