Mercurial > hg > graal-compiler
view src/share/vm/c1x/c1x_VmIds.cpp @ 2282:0309d394eb5f
Added support for non-null oop values in scope objects (allocating global handle).
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Mon, 04 Apr 2011 21:02:45 +0200 |
parents | 999f8086cc4f |
children | 3e3e8bd12730 |
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/* * Copyright 2000-2010 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 "precompiled.hpp" #include "c1x/c1x_VmIds.hpp" // VmIds implementation GrowableArray<address>* VmIds::_stubs = NULL; GrowableArray<jobject>* VmIds::_localHandles = NULL; void VmIds::initializeObjects() { if (_stubs == NULL) { assert(_localHandles == NULL, "inconsistent state"); _stubs = new (ResourceObj::C_HEAP) GrowableArray<address> (64, true); _localHandles = new (ResourceObj::C_HEAP) GrowableArray<jobject> (64, true); } assert(_localHandles->length() == 0, "invalid state"); } void VmIds::cleanupLocalObjects() { for (int i = 0; i < _localHandles->length(); i++) { JNIHandles::destroy_global(_localHandles->at(i)); } _localHandles->clear(); } jlong VmIds::addStub(address stub) { assert(!_stubs->contains(stub), "duplicate stub"); return _stubs->append(stub) | STUB; } jlong VmIds::add(Handle obj, jlong type) { assert(!obj.is_null(), "cannot add NULL handle"); int idx = -1; for (int i = 0; i < _localHandles->length(); i++) if (JNIHandles::resolve_non_null(_localHandles->at(i)) == obj()) { idx = i; break; } if (idx == -1) { if (JavaThread::current()->thread_state() == _thread_in_vm) { idx = _localHandles->append(JNIHandles::make_global(obj)); } else { VM_ENTRY_MARK; idx = _localHandles->append(JNIHandles::make_global(obj)); } } return idx | type; } address VmIds::getStub(jlong id) { assert((id & TYPE_MASK) == STUB, "wrong id type, STUB expected"); assert((id & ~TYPE_MASK) >= 0 && (id & ~TYPE_MASK) < _stubs->length(), "STUB index out of bounds"); return _stubs->at(id & ~TYPE_MASK); } oop VmIds::getObject(jlong id) { assert((id & TYPE_MASK) != STUB, "wrong id type"); assert((id & ~TYPE_MASK) >= 0 && (id & ~TYPE_MASK) < _localHandles->length(), "index out of bounds"); return JNIHandles::resolve_non_null(_localHandles->at(id & ~TYPE_MASK)); }