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annotate src/share/vm/c1x/c1x_VmIds.cpp @ 1432:b61a43cd1255

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author Lukas Stadler <lukas.stadler@oracle.com>
date Wed, 01 Sep 2010 17:13:38 -0700
parents 695451afc619
children efba53f86c4f
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1 /*
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2 * Copyright 2000-2010 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 # include "incls/_precompiled.incl"
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26 # include "incls/_c1x_VmIds.cpp.incl"
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27
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28 // VmIds implementation
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29
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30 GrowableArray<address>* VmIds::_stubs = NULL;
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31 GrowableArray<jobject>* VmIds::_localHandles = NULL;
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32
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33 void VmIds::initializeObjects() {
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34 if (_stubs == NULL) {
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35 assert(_localHandles == NULL, "inconsistent state");
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36 _stubs = new (ResourceObj::C_HEAP) GrowableArray<address> (64, true);
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37 _localHandles = new (ResourceObj::C_HEAP) GrowableArray<jobject> (64, true);
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38 }
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39 assert(_localHandles->length() == 0, "invalid state");
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40 }
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41
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42 void VmIds::cleanupLocalObjects() {
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43 for (int i = 0; i < _localHandles->length(); i++) {
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44 JNIHandles::destroy_global(_localHandles->at(i));
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45 }
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46 _localHandles->clear();
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47 }
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48
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49 jlong VmIds::addStub(address stub) {
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50 assert(!_stubs->contains(stub), "duplicate stub");
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51 return _stubs->append(stub) | STUB;
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52 }
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53
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54 jlong VmIds::add(Handle obj, CompilerObjectType type) {
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55 assert(!obj.is_null(), "cannot add NULL handle");
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56 int idx = -1;
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57 for (int i = 0; i < _localHandles->length(); i++)
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58 if (JNIHandles::resolve_non_null(_localHandles->at(i)) == obj()) {
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59 idx = i;
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60 break;
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61 }
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62 if (idx = -1) {
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63 if (JavaThread::current()->thread_state() == _thread_in_vm) {
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64 idx = _localHandles->append(JNIHandles::make_global(obj));
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65 } else {
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66 VM_ENTRY_MARK;
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67 idx = _localHandles->append(JNIHandles::make_global(obj));
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68 }
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69 }
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70 return idx | type;
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71 }
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72
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73 address VmIds::getStub(jlong id) {
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74 assert((id & TYPE_MASK) == STUB, "wrong id type, STUB expected");
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75 assert((id & ~TYPE_MASK) >= 0 && (id & ~TYPE_MASK) < _stubs->length(), "STUB index out of bounds");
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76 return _stubs->at(id & ~TYPE_MASK);
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77 }
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78
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79 oop VmIds::getObject(jlong id) {
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80 assert((id & TYPE_MASK) != STUB, "wrong id type");
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81 assert((id & ~TYPE_MASK) >= 0 && (id & ~TYPE_MASK) < _localHandles->length(), "index out of bounds");
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82 return JNIHandles::resolve_non_null(_localHandles->at(id & ~TYPE_MASK));
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83 }
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84