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src/share/vm/oops/compiledICHolder.cpp@82f9d3b7e317 (annotated)

src/share/vm/oops/compiledICHolder.cpp

Fri, 30 Mar 2018 20:09:45 +0000

author

poonam

date

Fri, 30 Mar 2018 20:09:45 +0000

changeset 9185

82f9d3b7e317

parent 8997

f8a45a60bc6b

child 9203

53eec13fbaa5

permissions

-rw-r--r--

8199406: Performance drop with Java JDK 1.8.0_162-b32
Summary: Improve the nmethod unloading times by optimizing the search for an itable stub in VtableStubs array
Reviewed-by: kvn, coleenp, tschatzl

duke@435	1	/*
poonam@9185	2	* Copyright (c) 1998, 2018, 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 "oops/compiledICHolder.hpp"
coleenp@4037	27	#include "oops/oop.inline2.hpp"
duke@435	28
coleenp@4037	29	volatile int CompiledICHolder::_live_count;
coleenp@4037	30	volatile int CompiledICHolder::_live_not_claimed_count;
coleenp@4037	31
coleenp@4037	32
coleenp@4037	33	// Printing
coleenp@4037	34
coleenp@4037	35	void CompiledICHolder::print_on(outputStream* st) const {
coleenp@4037	36	st->print("%s", internal_name());
dbuck@8997	37	st->print(" - metadata: "); holder_metadata()->print_value_on(st); st->cr();
dbuck@8997	38	st->print(" - klass: "); holder_klass()->print_value_on(st); st->cr();
coleenp@4037	39	}
coleenp@4037	40
coleenp@4037	41	void CompiledICHolder::print_value_on(outputStream* st) const {
coleenp@4037	42	st->print("%s", internal_name());
coleenp@4037	43	}
coleenp@4037	44
coleenp@4037	45
coleenp@4037	46	// Verification
coleenp@4037	47
coleenp@4037	48	void CompiledICHolder::verify_on(outputStream* st) {
dbuck@8997	49	guarantee(holder_metadata()->is_method() || holder_metadata()->is_klass(), "should be method or klass");
coleenp@4037	50	guarantee(holder_klass()->is_klass(), "should be klass");
coleenp@4037	51	}