Mercurial > jdk8-mips64-public > hotspot / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/share/vm/memory/space.inline.hpp	Sat Dec 01 00:00:00 2007 +0000
     1.3 @@ -0,0 +1,68 @@
     1.4 +/*
     1.5 + * Copyright 2000-2006 Sun Microsystems, Inc.  All Rights Reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
    1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
    1.24 + * have any questions.
    1.25 + *
    1.26 + */
    1.27 +
    1.28 +inline HeapWord* OffsetTableContigSpace::allocate(size_t size) {
    1.29 +  HeapWord* res = ContiguousSpace::allocate(size);
    1.30 +  if (res != NULL) {
    1.31 +    _offsets.alloc_block(res, size);
    1.32 +  }
    1.33 +  return res;
    1.34 +}
    1.35 +
    1.36 +// Because of the requirement of keeping "_offsets" up to date with the
    1.37 +// allocations, we sequentialize these with a lock.  Therefore, best if
    1.38 +// this is used for larger LAB allocations only.
    1.39 +inline HeapWord* OffsetTableContigSpace::par_allocate(size_t size) {
    1.40 +  MutexLocker x(&_par_alloc_lock);
    1.41 +  // This ought to be just "allocate", because of the lock above, but that
    1.42 +  // ContiguousSpace::allocate asserts that either the allocating thread
    1.43 +  // holds the heap lock or it is the VM thread and we're at a safepoint.
    1.44 +  // The best I (dld) could figure was to put a field in ContiguousSpace
    1.45 +  // meaning "locking at safepoint taken care of", and set/reset that
    1.46 +  // here.  But this will do for now, especially in light of the comment
    1.47 +  // above.  Perhaps in the future some lock-free manner of keeping the
    1.48 +  // coordination.
    1.49 +  HeapWord* res = ContiguousSpace::par_allocate(size);
    1.50 +  if (res != NULL) {
    1.51 +    _offsets.alloc_block(res, size);
    1.52 +  }
    1.53 +  return res;
    1.54 +}
    1.55 +
    1.56 +inline HeapWord* OffsetTableContigSpace::block_start(const void* p) const {
    1.57 +  return _offsets.block_start(p);
    1.58 +}
    1.59 +
    1.60 +inline HeapWord* ContiguousSpace::concurrent_iteration_safe_limit()
    1.61 +{
    1.62 +  assert(_concurrent_iteration_safe_limit <= top(),
    1.63 +         "_concurrent_iteration_safe_limit update missed");
    1.64 +  return _concurrent_iteration_safe_limit;
    1.65 +}
    1.66 +
    1.67 +inline void ContiguousSpace::set_concurrent_iteration_safe_limit(HeapWord* new_limit)
    1.68 +{
    1.69 +  assert(new_limit <= top(), "uninitialized objects in the safe range");
    1.70 +  _concurrent_iteration_safe_limit = new_limit;
    1.71 +}