jdk-sandbox: hotspot/src/share/vm/gc/shared/preservedMarks.inline.hpp@8a7443b5edf8 (annotated)

36202 219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	1	/*
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	2	* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	4	*
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	5	* This code is free software; you can redistribute it and/or modify it
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	6	* under the terms of the GNU General Public License version 2 only, as
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	7	* published by the Free Software Foundation.
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	8	*
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	9	* This code is distributed in the hope that it will be useful, but WITHOUT
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	12	* version 2 for more details (a copy is included in the LICENSE file that
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	13	* accompanied this code).
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	14	*
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	15	* You should have received a copy of the GNU General Public License version
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219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	18	*
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	20	* or visit www.oracle.com if you need additional information or have any
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	21	* questions.
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	22	*
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	23	*/
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	24
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	25	#ifndef SHARE_VM_GC_SHARED_PRESERVEDMARKS_INLINE_HPP
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	26	#define SHARE_VM_GC_SHARED_PRESERVEDMARKS_INLINE_HPP
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	27
37422 8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	28	#include "gc/shared/preservedMarks.hpp"
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	29	#include "oops/oop.inline.hpp"
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	30	#include "utilities/stack.inline.hpp"
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	31
36202 219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	32	inline bool PreservedMarks::should_preserve_mark(oop obj, markOop m) const {
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	33	return m->must_be_preserved_for_promotion_failure(obj);
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	34	}
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	35
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	36	inline void PreservedMarks::push(oop obj, markOop m) {
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	37	assert(should_preserve_mark(obj, m), "pre-condition");
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	38	OopAndMarkOop elem(obj, m);
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	39	_stack.push(elem);
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	40	}
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	41
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	42	inline void PreservedMarks::push_if_necessary(oop obj, markOop m) {
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	43	if (should_preserve_mark(obj, m)) {
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	44	push(obj, m);
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	45	}
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	46	}
219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	47
37422 8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	48	inline void PreservedMarks::init_forwarded_mark(oop obj) {
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	49	obj->init_mark();
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	50	}
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	51
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	52	template <class E>
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	53	inline void PreservedMarksSet::restore(E* executor) {
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	54	volatile size_t total_size = 0;
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	55
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	56	#ifdef ASSERT
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	57	// This is to make sure the total_size we'll calculate below is correct.
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	58	size_t total_size_before = 0;
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	59	for (uint i = 0; i < _num; i += 1) {
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	60	total_size_before += get(i)->size();
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	61	}
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	62	#endif // def ASSERT
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	63
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	64	if (executor == NULL) {
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	65	for (uint i = 0; i < _num; i += 1) {
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	66	total_size += get(i)->size();
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	67	get(i)->restore();
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	68	}
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	69	} else {
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	70	// Right now, if the executor is not NULL we do the work in
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	71	// parallel. In the future we might want to do the restoration
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	72	// serially, if there's only a small number of marks per stack.
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	73	restore_internal(executor, &total_size);
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	74	}
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	75	assert_empty();
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	76
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	77	assert(total_size == total_size_before,
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	78	"total_size = " SIZE_FORMAT " before = " SIZE_FORMAT,
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	79	total_size, total_size_before);
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	80
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	81	log_trace(gc)("Restored " SIZE_FORMAT " marks", total_size);
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	82	}
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	83
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	84	inline PreservedMarks::PreservedMarks()
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	85	: _stack(OopAndMarkOopStack::default_segment_size(),
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	86	// This stack should be used very infrequently so there's
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	87	// no point in caching stack segments (there will be a
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	88	// waste of space most of the time). So we set the max
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	89	// cache size to 0.
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	90	0 /* max_cache_size */) { }
8a7443b5edf8 8152312: ParNew: Restore preserved marks in parallel tonyp parents: 36202 diff changeset	91
36202 219f8808c3bd 8146989: Introduce per-worker preserved mark stacks in ParNew tonyp parents: diff changeset	92	#endif // SHARE_VM_GC_SHARED_PRESERVEDMARKS_INLINE_HPP

author	tonyp
	Thu, 07 Apr 2016 10:55:54 +0200
changeset 37422	8a7443b5edf8
parent 36202	219f8808c3bd
child 39228	32ce84798166
permissions	-rw-r--r--