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src/share/vm/prims/whitebox.hpp@2c6ef90f030a (annotated)

src/share/vm/prims/whitebox.hpp

Mon, 07 Jul 2014 10:12:40 +0200

author

stefank

date

Mon, 07 Jul 2014 10:12:40 +0200

changeset 6992

2c6ef90f030a

parent 6525

4abb719c5620

child 7165

e2452c3ff7fb

permissions

-rw-r--r--

8049421: G1 Class Unloading after completing a concurrent mark cycle
Reviewed-by: tschatzl, ehelin, brutisso, coleenp, roland, iveresov
Contributed-by: stefan.karlsson@oracle.com, mikael.gerdin@oracle.com

mgerdin@3619	1	/*
iignatyev@6525	2	* Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
mgerdin@3619	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
mgerdin@3619	4	*
mgerdin@3619	5	* This code is free software; you can redistribute it and/or modify it
mgerdin@3619	6	* under the terms of the GNU General Public License version 2 only, as
mgerdin@3619	7	* published by the Free Software Foundation.
mgerdin@3619	8	*
mgerdin@3619	9	* This code is distributed in the hope that it will be useful, but WITHOUT
mgerdin@3619	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
mgerdin@3619	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
mgerdin@3619	12	* version 2 for more details (a copy is included in the LICENSE file that
mgerdin@3619	13	* accompanied this code).
mgerdin@3619	14	*
mgerdin@3619	15	* You should have received a copy of the GNU General Public License version
mgerdin@3619	16	* 2 along with this work; if not, write to the Free Software Foundation,
mgerdin@3619	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
mgerdin@3619	18	*
mgerdin@3619	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
mgerdin@3619	20	* or visit www.oracle.com if you need additional information or have any
mgerdin@3619	21	* questions.
mgerdin@3619	22	*
mgerdin@3619	23	*/
mgerdin@3619	24
mgerdin@3619	25	#ifndef SHARE_VM_PRIMS_WHITEBOX_HPP
mgerdin@3619	26	#define SHARE_VM_PRIMS_WHITEBOX_HPP
mgerdin@3619	27
nloodin@3681	28	#include "prims/jni.h"
nloodin@3681	29
nloodin@3681	30	#include "memory/allocation.hpp"
nloodin@3681	31	#include "oops/oopsHierarchy.hpp"
nloodin@3681	32
nloodin@3681	33	// Entry macro to transition from JNI to VM state.
nloodin@3681	34
nloodin@3681	35	#define WB_ENTRY(result_type, header) JNI_ENTRY(result_type, header)
nloodin@3681	36	#define WB_END JNI_END
iignatyev@4592	37	#define WB_METHOD_DECLARE(result_type) extern "C" result_type JNICALL
nloodin@3681	38
ccheung@6347	39	#define CHECK_JNI_EXCEPTION_(env, value) \
ccheung@6347	40	do { \
ccheung@6347	41	JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
ccheung@6347	42	if (HAS_PENDING_EXCEPTION) { \
ccheung@6347	43	return(value); \
ccheung@6347	44	} \
ccheung@6346	45	} while (0)
ccheung@6346	46
ccheung@6347	47	#define CHECK_JNI_EXCEPTION(env) \
ccheung@6347	48	do { \
ccheung@6347	49	JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
ccheung@6347	50	if (HAS_PENDING_EXCEPTION) { \
ccheung@6347	51	return; \
ccheung@6347	52	} \
ccheung@6346	53	} while (0)
ccheung@6346	54
mgerdin@3619	55	class WhiteBox : public AllStatic {
mgerdin@3619	56	private:
mgerdin@3619	57	static bool _used;
mgerdin@3619	58	public:
mgerdin@3619	59	static bool used() { return _used; }
mgerdin@3619	60	static void set_used() { _used = true; }
nloodin@3681	61	static int offset_for_field(const char* field_name, oop object,
nloodin@3681	62	Symbol* signature_symbol);
nloodin@3681	63	static const char* lookup_jstring(const char* field_name, oop object);
nloodin@3681	64	static bool lookup_bool(const char* field_name, oop object);
stefank@6992	65
stefank@6992	66	static int array_bytes_to_length(size_t bytes);
mgerdin@3619	67	};
mgerdin@3619	68
nloodin@3681	69
nloodin@3681	70
mgerdin@3619	71	#endif // SHARE_VM_PRIMS_WHITEBOX_HPP