1 /*
   2  * Copyright 1997-2009 Sun Microsystems, Inc.  All Rights Reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  *

  41 bool OopClosure::must_remember_klasses() {
  42   return _must_remember_klasses;
  43 }
  44 void OopClosure::set_must_remember_klasses(bool v) {
  45   _must_remember_klasses = v;
  46 }
  47 #endif
  48 
  49 
  50 MarkingCodeBlobClosure::MarkScope::MarkScope(bool activate)
  51   : _active(activate)
  52 {
  53   if (_active)  nmethod::oops_do_marking_prologue();
  54 }
  55 
  56 MarkingCodeBlobClosure::MarkScope::~MarkScope() {
  57   if (_active)  nmethod::oops_do_marking_epilogue();
  58 }
  59 
  60 void MarkingCodeBlobClosure::do_code_blob(CodeBlob* cb) {
  61   if (!cb->is_nmethod())  return;
  62   nmethod* nm = (nmethod*) cb;
  63   if (!nm->test_set_oops_do_mark()) {
  64     NOT_PRODUCT(if (TraceScavenge)  nm->print_on(tty, "oops_do, 1st visit\n"));
  65     do_newly_marked_nmethod(nm);
  66   } else {
  67     NOT_PRODUCT(if (TraceScavenge)  nm->print_on(tty, "oops_do, skipped on 2nd visit\n"));
  68   }
  69 }
  70 
  71 void CodeBlobToOopClosure::do_newly_marked_nmethod(nmethod* nm) {
  72   nm->oops_do(_cl, /*do_strong_roots_only=*/ true);
  73 }
  74 
  75 void CodeBlobToOopClosure::do_code_blob(CodeBlob* cb) {
  76   if (!_do_marking) {
  77     NOT_PRODUCT(if (TraceScavenge && Verbose && cb->is_nmethod())  ((nmethod*)cb)->print_on(tty, "oops_do, unmarked visit\n"));

  78     // This assert won't work, since there are lots of mini-passes
  79     // (mostly in debug mode) that co-exist with marking phases.
  80     //assert(!(cb->is_nmethod() && ((nmethod*)cb)->test_oops_do_mark()), "found marked nmethod during mark-free phase");
  81     cb->oops_do(_cl);


  82   } else {
  83     MarkingCodeBlobClosure::do_code_blob(cb);
  84   }
  85 }
  86 
  87 

   1 /*
   2  * Copyright 1997-2010 Sun Microsystems, Inc.  All Rights Reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  *

  41 bool OopClosure::must_remember_klasses() {
  42   return _must_remember_klasses;
  43 }
  44 void OopClosure::set_must_remember_klasses(bool v) {
  45   _must_remember_klasses = v;
  46 }
  47 #endif
  48 
  49 
  50 MarkingCodeBlobClosure::MarkScope::MarkScope(bool activate)
  51   : _active(activate)
  52 {
  53   if (_active)  nmethod::oops_do_marking_prologue();
  54 }
  55 
  56 MarkingCodeBlobClosure::MarkScope::~MarkScope() {
  57   if (_active)  nmethod::oops_do_marking_epilogue();
  58 }
  59 
  60 void MarkingCodeBlobClosure::do_code_blob(CodeBlob* cb) {
  61   nmethod* nm = cb->as_nmethod_or_null();
  62   if (nm == NULL)  return;
  63   if (!nm->test_set_oops_do_mark()) {
  64     NOT_PRODUCT(if (TraceScavenge)  nm->print_on(tty, "oops_do, 1st visit\n"));
  65     do_newly_marked_nmethod(nm);
  66   } else {
  67     NOT_PRODUCT(if (TraceScavenge)  nm->print_on(tty, "oops_do, skipped on 2nd visit\n"));
  68   }
  69 }
  70 
  71 void CodeBlobToOopClosure::do_newly_marked_nmethod(nmethod* nm) {
  72   nm->oops_do(_cl, /*do_strong_roots_only=*/ true);
  73 }
  74 
  75 void CodeBlobToOopClosure::do_code_blob(CodeBlob* cb) {
  76   if (!_do_marking) {
  77     nmethod* nm = cb->as_nmethod_or_null();
  78     NOT_PRODUCT(if (TraceScavenge && Verbose && nm != NULL)  nm->print_on(tty, "oops_do, unmarked visit\n"));
  79     // This assert won't work, since there are lots of mini-passes
  80     // (mostly in debug mode) that co-exist with marking phases.
  81     //assert(!(cb->is_nmethod() && ((nmethod*)cb)->test_oops_do_mark()), "found marked nmethod during mark-free phase");
  82     if (nm != NULL) {
  83       nm->oops_do(_cl);
  84     }
  85   } else {
  86     MarkingCodeBlobClosure::do_code_blob(cb);
  87   }
  88 }
  89 
  90