/usr/include/directfb/direct/LockWQ.h is in libdirectfb-dev 1.7.7-8.
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 | /*
(c) Copyright 2012-2013 DirectFB integrated media GmbH
(c) Copyright 2001-2013 The world wide DirectFB Open Source Community (directfb.org)
(c) Copyright 2000-2004 Convergence (integrated media) GmbH
All rights reserved.
Written by Denis Oliver Kropp <dok@directfb.org>,
Andreas Shimokawa <andi@directfb.org>,
Marek Pikarski <mass@directfb.org>,
Sven Neumann <neo@directfb.org>,
Ville Syrjälä <syrjala@sci.fi> and
Claudio Ciccani <klan@users.sf.net>.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#ifndef ___Direct__LockWQ__H___
#define ___Direct__LockWQ__H___
#include <direct/Types++.h>
#ifdef __cplusplus
extern "C" {
#endif
#include <direct/os/mutex.h>
#include <direct/os/waitqueue.h>
#ifdef __cplusplus
}
namespace Direct {
class LockWQ
{
public:
LockWQ()
{
direct_mutex_init( &mutex );
direct_waitqueue_init( &wq );
}
~LockWQ()
{
direct_mutex_deinit( &mutex );
direct_waitqueue_deinit( &wq );
}
void lock()
{
direct_mutex_lock( &mutex );
}
void unlock()
{
direct_mutex_unlock( &mutex );
}
DirectResult wait( unsigned long timeout_us = 0 )
{
if (timeout_us > 0)
return direct_waitqueue_wait_timeout( &wq, &mutex, timeout_us );
return direct_waitqueue_wait( &wq, &mutex );
}
void notify()
{
direct_waitqueue_signal( &wq );
}
void notifyAll()
{
direct_waitqueue_broadcast( &wq );
}
class Lock {
public:
Lock( LockWQ &lwq )
:
lwq( lwq ),
unlocked( false )
{
lwq.lock();
}
~Lock()
{
if (!unlocked)
lwq.unlock();
}
DirectResult wait( unsigned long timeout_us = 0 )
{
return lwq.wait( timeout_us );
}
void unlock()
{
unlocked = true;
lwq.unlock();
}
private:
LockWQ &lwq;
bool unlocked;
};
private:
DirectMutex mutex;
DirectWaitQueue wq;
};
}
#endif // __cplusplus
#endif
|