jdk8-mips64-public/hotspot: src/share/vm/utilities/preserveException.hpp@24b9c7f4cae6

     1 /*

     2  * Copyright (c) 1998, 2010, 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  */

    25 #ifndef SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP

    26 #define SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP

    28 #include "runtime/handles.hpp"

    29 #ifdef TARGET_OS_FAMILY_linux

    30 # include "thread_linux.inline.hpp"

    31 #endif

    32 #ifdef TARGET_OS_FAMILY_solaris

    33 # include "thread_solaris.inline.hpp"

    34 #endif

    35 #ifdef TARGET_OS_FAMILY_windows

    36 # include "thread_windows.inline.hpp"

    37 #endif

    38 #ifdef TARGET_OS_FAMILY_bsd

    39 # include "thread_bsd.inline.hpp"

    40 #endif

    42 // This file provides more support for exception handling; see also exceptions.hpp

    43 class PreserveExceptionMark {

    44  private:

    45   Thread*     _thread;

    46   Handle      _preserved_exception_oop;

    47   int         _preserved_exception_line;

    48   const char* _preserved_exception_file;

    50  public:

    51   PreserveExceptionMark(Thread*& thread);

    52   ~PreserveExceptionMark();

    53 };

    56 // This is a clone of PreserveExceptionMark which asserts instead

    57 // of failing when what it wraps generates a pending exception.

    58 // It also addresses bug 6431341.

    59 class CautiouslyPreserveExceptionMark {

    60  private:

    61   Thread*     _thread;

    62   Handle      _preserved_exception_oop;

    63   int         _preserved_exception_line;

    64   const char* _preserved_exception_file;

    66  public:

    67   CautiouslyPreserveExceptionMark(Thread* thread);

    68   ~CautiouslyPreserveExceptionMark();

    69 };

    72 // Like PreserveExceptionMark but allows new exceptions to be generated in

    73 // the body of the mark. If a new exception is generated then the original one

    74 // is discarded.

    75 class WeakPreserveExceptionMark {

    76 private:

    77   Thread*     _thread;

    78   Handle      _preserved_exception_oop;

    79   int         _preserved_exception_line;

    80   const char* _preserved_exception_file;

    82   void        preserve();

    83   void        restore();

    85   public:

    86     WeakPreserveExceptionMark(Thread* pThread) :  _thread(pThread), _preserved_exception_oop()  {

    87       if (pThread->has_pending_exception()) {

    88         preserve();

    89       }

    90     }

    91     ~WeakPreserveExceptionMark() {

    92       if (_preserved_exception_oop.not_null()) {

    93         restore();

    94       }

    95     }

    96 };

   100 // use global exception mark when allowing pending exception to be set and

   101 // saving and restoring them

   102 #define PRESERVE_EXCEPTION_MARK                    Thread* THREAD; PreserveExceptionMark __em(THREAD);

   104 #endif // SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP

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