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src/share/vm/gc_implementation/g1/g1AllocRegion.inline.hpp@a248d0be1309 (annotated)

src/share/vm/gc_implementation/g1/g1AllocRegion.inline.hpp

Mon, 19 Aug 2019 10:11:31 +0200

author

neugens

date

Mon, 19 Aug 2019 10:11:31 +0200

changeset 9861

a248d0be1309

parent 6990

1526a938e670

permissions

-rw-r--r--

8229401: Fix JFR code cache test failures
8223689: Add JFR Thread Sampling Support
8223690: Add JFR BiasedLock Event Support
8223691: Add JFR G1 Region Type Change Event Support
8223692: Add JFR G1 Heap Summary Event Support
Summary: Backport JFR from JDK11, additional fixes
Reviewed-by: neugens, apetushkov
Contributed-by: denghui.ddh@alibaba-inc.com

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1ALLOCREGION_INLINE_HPP
aoqi@0	26	#define SHARE_VM_GC_IMPLEMENTATION_G1_G1ALLOCREGION_INLINE_HPP
aoqi@0	27
aoqi@0	28	#include "gc_implementation/g1/g1AllocRegion.hpp"
mgerdin@6990	29	#include "gc_implementation/g1/heapRegion.inline.hpp"
aoqi@0	30
aoqi@0	31	inline HeapWord* G1AllocRegion::allocate(HeapRegion* alloc_region,
aoqi@0	32	size_t word_size,
aoqi@0	33	bool bot_updates) {
aoqi@0	34	assert(alloc_region != NULL, err_msg("pre-condition"));
aoqi@0	35
aoqi@0	36	if (!bot_updates) {
aoqi@0	37	return alloc_region->allocate_no_bot_updates(word_size);
aoqi@0	38	} else {
aoqi@0	39	return alloc_region->allocate(word_size);
aoqi@0	40	}
aoqi@0	41	}
aoqi@0	42
aoqi@0	43	inline HeapWord* G1AllocRegion::par_allocate(HeapRegion* alloc_region,
aoqi@0	44	size_t word_size,
aoqi@0	45	bool bot_updates) {
aoqi@0	46	assert(alloc_region != NULL, err_msg("pre-condition"));
aoqi@0	47	assert(!alloc_region->is_empty(), err_msg("pre-condition"));
aoqi@0	48
aoqi@0	49	if (!bot_updates) {
aoqi@0	50	return alloc_region->par_allocate_no_bot_updates(word_size);
aoqi@0	51	} else {
aoqi@0	52	return alloc_region->par_allocate(word_size);
aoqi@0	53	}
aoqi@0	54	}
aoqi@0	55
aoqi@0	56	inline HeapWord* G1AllocRegion::attempt_allocation(size_t word_size,
aoqi@0	57	bool bot_updates) {
aoqi@0	58	assert(bot_updates == _bot_updates, ar_ext_msg(this, "pre-condition"));
aoqi@0	59
aoqi@0	60	HeapRegion* alloc_region = _alloc_region;
aoqi@0	61	assert(alloc_region != NULL, ar_ext_msg(this, "not initialized properly"));
aoqi@0	62
aoqi@0	63	HeapWord* result = par_allocate(alloc_region, word_size, bot_updates);
aoqi@0	64	if (result != NULL) {
aoqi@0	65	trace("alloc", word_size, result);
aoqi@0	66	return result;
aoqi@0	67	}
aoqi@0	68	trace("alloc failed", word_size);
aoqi@0	69	return NULL;
aoqi@0	70	}
aoqi@0	71
aoqi@0	72	inline HeapWord* G1AllocRegion::attempt_allocation_locked(size_t word_size,
aoqi@0	73	bool bot_updates) {
aoqi@0	74	// First we have to tedo the allocation, assuming we're holding the
aoqi@0	75	// appropriate lock, in case another thread changed the region while
aoqi@0	76	// we were waiting to get the lock.
aoqi@0	77	HeapWord* result = attempt_allocation(word_size, bot_updates);
aoqi@0	78	if (result != NULL) {
aoqi@0	79	return result;
aoqi@0	80	}
aoqi@0	81
aoqi@0	82	retire(true /* fill_up */);
aoqi@0	83	result = new_alloc_region_and_allocate(word_size, false /* force */);
aoqi@0	84	if (result != NULL) {
aoqi@0	85	trace("alloc locked (second attempt)", word_size, result);
aoqi@0	86	return result;
aoqi@0	87	}
aoqi@0	88	trace("alloc locked failed", word_size);
aoqi@0	89	return NULL;
aoqi@0	90	}
aoqi@0	91
aoqi@0	92	inline HeapWord* G1AllocRegion::attempt_allocation_force(size_t word_size,
aoqi@0	93	bool bot_updates) {
aoqi@0	94	assert(bot_updates == _bot_updates, ar_ext_msg(this, "pre-condition"));
aoqi@0	95	assert(_alloc_region != NULL, ar_ext_msg(this, "not initialized properly"));
aoqi@0	96
aoqi@0	97	trace("forcing alloc");
aoqi@0	98	HeapWord* result = new_alloc_region_and_allocate(word_size, true /* force */);
aoqi@0	99	if (result != NULL) {
aoqi@0	100	trace("alloc forced", word_size, result);
aoqi@0	101	return result;
aoqi@0	102	}
aoqi@0	103	trace("alloc forced failed", word_size);
aoqi@0	104	return NULL;
aoqi@0	105	}
aoqi@0	106
aoqi@0	107	#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1ALLOCREGION_INLINE_HPP