mirror of
https://github.com/openjdk/jdk.git
synced 2025-09-21 11:34:38 +02:00
3e9fe24ddd
7023151: G1: refactor the code that operates on _cur_alloc_region to be re-used for allocs by the GC threads 7018286: G1: humongous allocation attempts should take the GC locker into account First, this change replaces the asymmetric locking scheme in the G1 slow alloc path by a summetric one. Second, it factors out the code that operates on _cur_alloc_region so that it can be re-used for allocations by the GC threads in the future. Reviewed-by: stefank, brutisso, johnc
58 lines
2.1 KiB
C++
58 lines
2.1 KiB
C++
/*
|
|
* Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*
|
|
*/
|
|
|
|
#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGION_INLINE_HPP
|
|
#define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGION_INLINE_HPP
|
|
|
|
inline HeapWord* G1OffsetTableContigSpace::allocate(size_t size) {
|
|
HeapWord* res = ContiguousSpace::allocate(size);
|
|
if (res != NULL) {
|
|
_offsets.alloc_block(res, size);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
// Because of the requirement of keeping "_offsets" up to date with the
|
|
// allocations, we sequentialize these with a lock. Therefore, best if
|
|
// this is used for larger LAB allocations only.
|
|
inline HeapWord* G1OffsetTableContigSpace::par_allocate(size_t size) {
|
|
MutexLocker x(&_par_alloc_lock);
|
|
// Given that we take the lock no need to use par_allocate() here.
|
|
HeapWord* res = ContiguousSpace::allocate(size);
|
|
if (res != NULL) {
|
|
_offsets.alloc_block(res, size);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
inline HeapWord* G1OffsetTableContigSpace::block_start(const void* p) {
|
|
return _offsets.block_start(p);
|
|
}
|
|
|
|
inline HeapWord*
|
|
G1OffsetTableContigSpace::block_start_const(const void* p) const {
|
|
return _offsets.block_start_const(p);
|
|
}
|
|
|
|
#endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGION_INLINE_HPP
|