Mercurial > jdk8-mips64-public > hotspot / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/share/vm/utilities/preserveException.hpp	Sat Dec 01 00:00:00 2007 +0000
     1.3 @@ -0,0 +1,85 @@
     1.4 +/*
     1.5 + * Copyright 1998-2006 Sun Microsystems, Inc.  All Rights Reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
    1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
    1.24 + * have any questions.
    1.25 + *
    1.26 + */
    1.27 +
    1.28 +// This file provides more support for exception handling; see also exceptions.hpp
    1.29 +class PreserveExceptionMark {
    1.30 + private:
    1.31 +  Thread*     _thread;
    1.32 +  Handle      _preserved_exception_oop;
    1.33 +  int         _preserved_exception_line;
    1.34 +  const char* _preserved_exception_file;
    1.35 +
    1.36 + public:
    1.37 +  PreserveExceptionMark(Thread*& thread);
    1.38 +  ~PreserveExceptionMark();
    1.39 +};
    1.40 +
    1.41 +
    1.42 +// This is a clone of PreserveExceptionMark which asserts instead
    1.43 +// of failing when what it wraps generates a pending exception.
    1.44 +// It also addresses bug 6431341.
    1.45 +class CautiouslyPreserveExceptionMark {
    1.46 + private:
    1.47 +  Thread*     _thread;
    1.48 +  Handle      _preserved_exception_oop;
    1.49 +  int         _preserved_exception_line;
    1.50 +  const char* _preserved_exception_file;
    1.51 +
    1.52 + public:
    1.53 +  CautiouslyPreserveExceptionMark(Thread* thread);
    1.54 +  ~CautiouslyPreserveExceptionMark();
    1.55 +};
    1.56 +
    1.57 +
    1.58 +// Like PreserveExceptionMark but allows new exceptions to be generated in
    1.59 +// the body of the mark. If a new exception is generated then the original one
    1.60 +// is discarded.
    1.61 +class WeakPreserveExceptionMark {
    1.62 +private:
    1.63 +  Thread*     _thread;
    1.64 +  Handle      _preserved_exception_oop;
    1.65 +  int         _preserved_exception_line;
    1.66 +  const char* _preserved_exception_file;
    1.67 +
    1.68 +  void        preserve();
    1.69 +  void        restore();
    1.70 +
    1.71 +  public:
    1.72 +    WeakPreserveExceptionMark(Thread* pThread) :  _thread(pThread), _preserved_exception_oop()  {
    1.73 +      if (pThread->has_pending_exception()) {
    1.74 +        preserve();
    1.75 +      }
    1.76 +    }
    1.77 +    ~WeakPreserveExceptionMark() {
    1.78 +      if (_preserved_exception_oop.not_null()) {
    1.79 +        restore();
    1.80 +      }
    1.81 +    }
    1.82 +};
    1.83 +
    1.84 +
    1.85 +
    1.86 +// use global exception mark when allowing pending exception to be set and
    1.87 +// saving and restoring them
    1.88 +#define PRESERVE_EXCEPTION_MARK                    Thread* THREAD; PreserveExceptionMark __em(THREAD);