/usr/include/octave-3.8.1/octave/oct-mutex.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.
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Copyright (C) 2008-2013 Michael Goffioul
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_oct_mutex_h)
#define octave_oct_mutex_h 1
#include "oct-refcount.h"
class octave_mutex;
class
octave_base_mutex
{
public:
friend class octave_mutex;
octave_base_mutex (void) : count (1) { }
virtual ~octave_base_mutex (void) { }
virtual void lock (void);
virtual void unlock (void);
virtual bool try_lock (void);
private:
octave_refcount<int> count;
};
class
OCTAVE_API
octave_mutex
{
public:
octave_mutex (void);
octave_mutex (const octave_mutex& m)
: rep (m.rep)
{
rep->count++;
}
~octave_mutex (void)
{
if (--rep->count == 0)
delete rep;
}
octave_mutex& operator = (const octave_mutex& m)
{
if (rep != m.rep)
{
if (--rep->count == 0)
delete rep;
rep = m.rep;
rep->count++;
}
return *this;
}
void lock (void)
{
rep->lock ();
}
void unlock (void)
{
rep->unlock ();
}
bool try_lock (void)
{
return rep->try_lock ();
}
protected:
octave_base_mutex *rep;
};
class
octave_autolock
{
public:
octave_autolock (const octave_mutex& m, bool block = true)
: mutex (m), lock_result (false)
{
if (block)
{
mutex.lock ();
lock_result = true;
}
else
lock_result = mutex.try_lock ();
}
~octave_autolock (void)
{
if (lock_result)
mutex.unlock ();
}
bool ok (void) const { return lock_result; }
operator bool (void) const { return ok (); }
private:
// No copying or default constructor!
octave_autolock (void);
octave_autolock (const octave_autolock&);
octave_autolock& operator = (const octave_autolock&);
private:
octave_mutex mutex;
bool lock_result;
};
class
OCTAVE_API
octave_thread
{
public:
static void init (void);
static bool is_octave_thread (void);
};
#endif
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