src/share/vm/prims/privilegedStack.cpp

/*
 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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#include "precompiled.hpp"
#include "memory/allocation.inline.hpp"
#include "oops/instanceKlass.hpp"
#include "oops/method.hpp"
#include "oops/oop.inline.hpp"
#include "prims/privilegedStack.hpp"
#include "runtime/vframe.hpp"

PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC

void PrivilegedElement::initialize(vframeStream* vfst, oop context, PrivilegedElement* next, TRAPS) {
  Method* method        = vfst->method();
  _klass                = method->method_holder();
  _privileged_context   = context;
#ifdef CHECK_UNHANDLED_OOPS
  THREAD->allow_unhandled_oop(&_privileged_context);
#endif // CHECK_UNHANDLED_OOPS
  _frame_id             = vfst->frame_id();
  _next                 = next;
  assert(_privileged_context == NULL || _privileged_context->is_oop(), "must be an oop");
  assert(protection_domain() == NULL || protection_domain()->is_oop(), "must be an oop");
}

void PrivilegedElement::oops_do(OopClosure* f) {
  PrivilegedElement *cur = this;
  do {
    f->do_oop((oop*) &cur->_privileged_context);
    cur = cur->_next;
  } while(cur != NULL);
}

void PrivilegedElement::classes_do(KlassClosure* f) {
  PrivilegedElement *cur = this;
  do {
    f->do_klass(cur->_klass);
    cur = cur->_next;
  } while(cur != NULL);
}

//-------------------------------------------------------------------------------
#ifndef PRODUCT

void PrivilegedElement::print_on(outputStream* st) const {
  st->print("   0x%lx ", _frame_id);
  _klass->print_value_on(st);
  if (protection_domain() != NULL) {
    st->print("   ");
    protection_domain()->print_value_on(st);
  }
  st->cr();
}

bool PrivilegedElement::contains(address addr) {
  PrivilegedElement *e = (PrivilegedElement *)addr;
  if (e >= this && e < this+1) return true;

  if (_next != NULL) {
    return _next->contains(addr);
  } else {
    return false;
  }
}

#endif