/usr/include/octave-3.8.1/octave/unwind-prot.h is in liboctave-dev 3.8.1-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 | /*
Copyright (C) 1993-2013 John W. Eaton
Copyright (C) 2009-2010 VZLU Prague
This file is part of Octave.
Octave is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
Octave 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
for more details.
You should have received a copy of the GNU General Public License
along with Octave; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>.
*/
#if !defined (octave_unwind_prot_h)
#define octave_unwind_prot_h 1
#include <cstddef>
#include <stack>
#include <memory>
#include "action-container.h"
class
OCTAVE_API
unwind_protect : public action_container
{
public:
unwind_protect (void) : lifo () { }
// Destructor should not raise an exception, so all actions
// registered should be exception-safe (but setting error_state is
// allowed). If you're not sure, see unwind_protect_safe.
~unwind_protect (void) { run (); }
virtual void add (elem *new_elem)
{
lifo.push (new_elem);
}
void add (void (*fcn) (void *), void *ptr = 0) GCC_ATTR_DEPRECATED
{
add (new fcn_arg_elem<void *> (fcn, ptr));
}
operator bool (void) const { return ! empty (); }
void run_top (void) GCC_ATTR_DEPRECATED { run_first (); }
void run_first (void)
{
if (! empty ())
{
// No leak on exception!
std::auto_ptr<elem> ptr (lifo.top ());
lifo.pop ();
ptr->run ();
}
}
void run_top (int num) GCC_ATTR_DEPRECATED { run (num); }
void discard_top (void) GCC_ATTR_DEPRECATED { discard_first (); }
void discard_first (void)
{
if (! empty ())
{
elem *ptr = lifo.top ();
lifo.pop ();
delete ptr;
}
}
void discard_top (int num) GCC_ATTR_DEPRECATED { discard (num); }
size_t size (void) const { return lifo.size (); }
protected:
std::stack<elem *> lifo;
private:
// No copying!
unwind_protect (const unwind_protect&);
unwind_protect& operator = (const unwind_protect&);
};
// Like unwind_protect, but this one will guard against the
// possibility of seeing an exception (or interrupt) in the cleanup
// actions. Not that we can do much about it, but at least we won't
// crash.
class
OCTAVE_API
unwind_protect_safe : public unwind_protect
{
private:
static void gripe_exception (void);
public:
unwind_protect_safe (void) : unwind_protect () { }
~unwind_protect_safe (void)
{
while (! empty ())
{
try
{
run_first ();
}
catch (...) // Yes, the black hole. Remember we're in a dtor.
{
gripe_exception ();
}
}
}
private:
// No copying!
unwind_protect_safe (const unwind_protect_safe&);
unwind_protect_safe& operator = (const unwind_protect_safe&);
};
#endif
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