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/g1/g1RemSet.inline.hpp	Thu Jun 05 15:57:56 2008 -0700
     1.3 @@ -0,0 +1,104 @@
     1.4 +/*
     1.5 + * Copyright 2001-2007 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 size_t G1RemSet::n_workers() {
    1.29 +  if (_g1->workers() != NULL) {
    1.30 +    return _g1->workers()->total_workers();
    1.31 +  } else {
    1.32 +    return 1;
    1.33 +  }
    1.34 +}
    1.35 +
    1.36 +inline void HRInto_G1RemSet::write_ref_nv(HeapRegion* from, oop* p) {
    1.37 +  oop obj = *p;
    1.38 +  assert(from != NULL && from->is_in_reserved(p),
    1.39 +         "p is not in a from");
    1.40 +  HeapRegion* to = _g1->heap_region_containing(obj);
    1.41 +  if (from != to && to != NULL) {
    1.42 +    if (!to->popular() && !from->is_survivor()) {
    1.43 +#if G1_REM_SET_LOGGING
    1.44 +      gclog_or_tty->print_cr("Adding " PTR_FORMAT " (" PTR_FORMAT ") to RS"
    1.45 +                             " for region [" PTR_FORMAT ", " PTR_FORMAT ")",
    1.46 +                             p, obj,
    1.47 +                             to->bottom(), to->end());
    1.48 +#endif
    1.49 +      assert(to->rem_set() != NULL, "Need per-region 'into' remsets.");
    1.50 +      if (to->rem_set()->add_reference(p)) {
    1.51 +        _g1->schedule_popular_region_evac(to);
    1.52 +      }
    1.53 +    }
    1.54 +  }
    1.55 +}
    1.56 +
    1.57 +inline void HRInto_G1RemSet::write_ref(HeapRegion* from, oop* p) {
    1.58 +  write_ref_nv(from, p);
    1.59 +}
    1.60 +
    1.61 +inline bool HRInto_G1RemSet::self_forwarded(oop obj) {
    1.62 +  bool result =  (obj->is_forwarded() && (obj->forwardee()== obj));
    1.63 +  return result;
    1.64 +}
    1.65 +
    1.66 +inline void HRInto_G1RemSet::par_write_ref(HeapRegion* from, oop* p, int tid) {
    1.67 +  oop obj = *p;
    1.68 +#ifdef ASSERT
    1.69 +  // can't do because of races
    1.70 +  // assert(obj == NULL || obj->is_oop(), "expected an oop");
    1.71 +
    1.72 +  // Do the safe subset of is_oop
    1.73 +  if (obj != NULL) {
    1.74 +#ifdef CHECK_UNHANDLED_OOPS
    1.75 +    oopDesc* o = obj.obj();
    1.76 +#else
    1.77 +    oopDesc* o = obj;
    1.78 +#endif // CHECK_UNHANDLED_OOPS
    1.79 +    assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned");
    1.80 +    assert(Universe::heap()->is_in_reserved(obj), "must be in heap");
    1.81 +  }
    1.82 +#endif // ASSERT
    1.83 +  assert(from == NULL || from->is_in_reserved(p),
    1.84 +         "p is not in from");
    1.85 +  HeapRegion* to = _g1->heap_region_containing(obj);
    1.86 +  // The test below could be optimized by applying a bit op to to and from.
    1.87 +  if (to != NULL && from != NULL && from != to) {
    1.88 +    if (!to->popular() && !from->is_survivor()) {
    1.89 +#if G1_REM_SET_LOGGING
    1.90 +      gclog_or_tty->print_cr("Adding " PTR_FORMAT " (" PTR_FORMAT ") to RS"
    1.91 +                             " for region [" PTR_FORMAT ", " PTR_FORMAT ")",
    1.92 +                             p, obj,
    1.93 +                             to->bottom(), to->end());
    1.94 +#endif
    1.95 +      assert(to->rem_set() != NULL, "Need per-region 'into' remsets.");
    1.96 +      if (to->rem_set()->add_reference(p, tid)) {
    1.97 +        _g1->schedule_popular_region_evac(to);
    1.98 +      }
    1.99 +    }
   1.100 +    // There is a tricky infinite loop if we keep pushing
   1.101 +    // self forwarding pointers onto our _new_refs list.
   1.102 +    if (_par_traversal_in_progress &&
   1.103 +        to->in_collection_set() && !self_forwarded(obj)) {
   1.104 +      _new_refs[tid]->push(p);
   1.105 +    }
   1.106 +  }
   1.107 +}