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/gc_implementation/shared/immutableSpace.cpp	Wed Apr 27 01:25:04 2016 +0800
     1.3 @@ -0,0 +1,84 @@
     1.4 +/*
     1.5 + * Copyright (c) 2001, 2014, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.23 + * or visit www.oracle.com if you need additional information or have any
    1.24 + * questions.
    1.25 + *
    1.26 + */
    1.27 +
    1.28 +#include "precompiled.hpp"
    1.29 +#include "utilities/macros.hpp"
    1.30 +#if INCLUDE_ALL_GCS
    1.31 +#include "gc_implementation/shared/immutableSpace.hpp"
    1.32 +#include "memory/universe.hpp"
    1.33 +#include "oops/oop.inline.hpp"
    1.34 +#endif // INCLUDE_ALL_GCS
    1.35 +
    1.36 +void ImmutableSpace::initialize(MemRegion mr) {
    1.37 +  HeapWord* bottom = mr.start();
    1.38 +  HeapWord* end    = mr.end();
    1.39 +
    1.40 +  assert(Universe::on_page_boundary(bottom) && Universe::on_page_boundary(end),
    1.41 +         "invalid space boundaries");
    1.42 +
    1.43 +  _bottom = bottom;
    1.44 +  _end = end;
    1.45 +}
    1.46 +
    1.47 +void ImmutableSpace::oop_iterate(ExtendedOopClosure* cl) {
    1.48 +  HeapWord* obj_addr = bottom();
    1.49 +  HeapWord* t = end();
    1.50 +  // Could call objects iterate, but this is easier.
    1.51 +  while (obj_addr < t) {
    1.52 +    obj_addr += oop(obj_addr)->oop_iterate(cl);
    1.53 +  }
    1.54 +}
    1.55 +
    1.56 +void ImmutableSpace::object_iterate(ObjectClosure* cl) {
    1.57 +  HeapWord* p = bottom();
    1.58 +  while (p < end()) {
    1.59 +    cl->do_object(oop(p));
    1.60 +    p += oop(p)->size();
    1.61 +  }
    1.62 +}
    1.63 +
    1.64 +#ifndef PRODUCT
    1.65 +
    1.66 +void ImmutableSpace::print_short() const {
    1.67 +  tty->print(" space " SIZE_FORMAT "K, 100%% used", capacity_in_bytes() / K);
    1.68 +}
    1.69 +
    1.70 +void ImmutableSpace::print() const {
    1.71 +  print_short();
    1.72 +  tty->print_cr(" [" INTPTR_FORMAT_W(#-6) "," INTPTR_FORMAT_W(#-6) ")", p2i(bottom()), p2i(end()));
    1.73 +}
    1.74 +
    1.75 +#endif
    1.76 +
    1.77 +void ImmutableSpace::verify() {
    1.78 +  HeapWord* p = bottom();
    1.79 +  HeapWord* t = end();
    1.80 +  HeapWord* prev_p = NULL;
    1.81 +  while (p < t) {
    1.82 +    oop(p)->verify();
    1.83 +    prev_p = p;
    1.84 +    p += oop(p)->size();
    1.85 +  }
    1.86 +  guarantee(p == end(), "end of last object must match end of space");
    1.87 +}