/usr/include/sigx-2.0/sigx/locking_dispatcher_ptr.h is in libsigx-2.0-dev 2.0.2-1build1.
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 | #ifndef _SIGX_LOCKING_DISPATCHER_PTR_H_
#define _SIGX_LOCKING_DISPATCHER_PTR_H_
/*
* Copyright 2008 Klaus Triendl
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <sigx/fwddecl.h>
#include <sigx/shared_dispatchable.h>
#include <sigx/lock_acquirer.h>
namespace sigx
{
/** @short behaves like a dispatcher pointer, ensures threadsafe access to the dispatcher reference.
*
* A DispatcherPtr is constructed from a dispatchable and references the
* dispatcher of the dispatchable. A read lock ensures threadsafe access to
* the reference (the owner thread sets a read/write lock when it sets
* the reference to 0).
* After you have constructed a DispatcherPtr, you *must* test for null.
*/
class shared_dispatchable::DispatcherPtr
{
public:
explicit DispatcherPtr(shared_dispatchable& _A_disp):
m_locker(*_A_disp.m_disp_ptr)
{}
/** @short Returns a plain dispatcher*
*/
dispatcher_ptr operator ->()
{ return access_acquiree(m_locker); }
operator bool()
{ return access_acquiree(m_locker); }
bool operator !()
{ return !access_acquiree(m_locker); }
bool operator !=(dispatcher_ptr other)
{ return other != access_acquiree(m_locker); }
private:
readlock_acquirer<internal::rwlockable_dispatcher_ptr> m_locker;
};
} // namespace sigx
#endif // file guard
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