privilegedStack.cpp revision 3602:da91efe96a93 
1/*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25#include "precompiled.hpp"
26#include "memory/allocation.inline.hpp"
27#include "oops/instanceKlass.hpp"
28#include "oops/method.hpp"
29#include "oops/oop.inline.hpp"
30#include "prims/privilegedStack.hpp"
31#include "runtime/vframe.hpp"
32
33
34void PrivilegedElement::initialize(vframeStream* vfst, oop context, PrivilegedElement* next, TRAPS) {
35  Method* method        = vfst->method();
36  _klass                = method->method_holder();
37  _privileged_context   = context;
38#ifdef CHECK_UNHANDLED_OOPS
39  THREAD->allow_unhandled_oop(&_privileged_context);
40#endif // CHECK_UNHANDLED_OOPS
41  _frame_id             = vfst->frame_id();
42  _next                 = next;
43  assert(_privileged_context == NULL || _privileged_context->is_oop(), "must be an oop");
44  assert(protection_domain() == NULL || protection_domain()->is_oop(), "must be an oop");
45}
46
47void PrivilegedElement::oops_do(OopClosure* f) {
48  PrivilegedElement *cur = this;
49  do {
50    f->do_oop((oop*) &cur->_privileged_context);
51    cur = cur->_next;
52  } while(cur != NULL);
53}
54
55void PrivilegedElement::classes_do(KlassClosure* f) {
56  PrivilegedElement *cur = this;
57  do {
58    f->do_klass(cur->_klass);
59    cur = cur->_next;
60  } while(cur != NULL);
61}
62
63//-------------------------------------------------------------------------------
64#ifndef PRODUCT
65
66void PrivilegedElement::print_on(outputStream* st) const {
67  st->print("   0x%lx ", _frame_id);
68  _klass->print_value_on(st);
69  if (protection_domain() != NULL) {
70    st->print("   ");
71    protection_domain()->print_value_on(st);
72  }
73  st->cr();
74}
75
76bool PrivilegedElement::contains(address addr) {
77  PrivilegedElement *e = (PrivilegedElement *)addr;
78  if (e >= this && e < this+1) return true;
79
80  if (_next != NULL) {
81    return _next->contains(addr);
82  } else {
83    return false;
84  }
85}
86
87#endif
88