6863023: need non-perm oops in code cache for JSR 292
Summary: Make a special root-list for those few nmethods which might contain non-perm oops.
Reviewed-by: twisti, kvn, never, jmasa, ysr
/* * Copyright 1997-2001 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */# include "incls/_precompiled.incl"# include "incls/_iterator.cpp.incl"void ObjectToOopClosure::do_object(oop obj) { obj->oop_iterate(_cl);}void VoidClosure::do_void() { ShouldNotCallThis();}MarkingCodeBlobClosure::MarkScope::MarkScope(bool activate) : _active(activate){ if (_active) nmethod::oops_do_marking_prologue();}MarkingCodeBlobClosure::MarkScope::~MarkScope() { if (_active) nmethod::oops_do_marking_epilogue();}void MarkingCodeBlobClosure::do_code_blob(CodeBlob* cb) { if (!cb->is_nmethod()) return; nmethod* nm = (nmethod*) cb; if (!nm->test_set_oops_do_mark()) { NOT_PRODUCT(if (TraceScavenge) nm->print_on(tty, "oops_do, 1st visit\n")); do_newly_marked_nmethod(nm); } else { NOT_PRODUCT(if (TraceScavenge) nm->print_on(tty, "oops_do, skipped on 2nd visit\n")); }}void CodeBlobToOopClosure::do_newly_marked_nmethod(CodeBlob* cb) { cb->oops_do(_cl);}void CodeBlobToOopClosure::do_code_blob(CodeBlob* cb) { if (!_do_marking) { NOT_PRODUCT(if (TraceScavenge && Verbose && cb->is_nmethod()) ((nmethod*)cb)->print_on(tty, "oops_do, unmarked visit\n")); // This assert won't work, since there are lots of mini-passes // (mostly in debug mode) that co-exist with marking phases. //assert(!(cb->is_nmethod() && ((nmethod*)cb)->test_oops_do_mark()), "found marked nmethod during mark-free phase"); cb->oops_do(_cl); } else { MarkingCodeBlobClosure::do_code_blob(cb); }}