/usr/include/directfb/fusion/ref.h is in libdirectfb-dev 1.2.10.0-4.3ubuntu1.
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 | /*
(c) Copyright 2001-2008 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 Hundt <andi@fischlustig.de>,
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 __FUSION__REF_H__
#define __FUSION__REF_H__
#include <pthread.h>
#include <fusion/types.h>
#include <fusion/call.h>
#include <fusion/lock.h>
typedef union {
/* multi app */
struct {
int id;
const FusionWorldShared *shared;
FusionID creator;
/* builtin impl */
struct {
int local;
int global;
FusionSkirmish lock;
FusionCall *call;
int call_arg;
} builtin;
} multi;
/* single app */
struct {
int refs;
pthread_cond_t cond;
pthread_mutex_t lock;
bool destroyed;
int locked;
FusionCall *call;
int call_arg;
} single;
} FusionRef;
/*
* Initialize.
*/
DirectResult fusion_ref_init (FusionRef *ref,
const char *name,
const FusionWorld *world);
DirectResult fusion_ref_set_name (FusionRef *ref,
const char *name);
/*
* Lock, increase, unlock.
*/
DirectResult fusion_ref_up (FusionRef *ref, bool global);
/*
* Lock, decrease, unlock.
*/
DirectResult fusion_ref_down (FusionRef *ref, bool global);
/*
* Get the current reference count. Meant for debugging only.
* This value is not reliable, because no locking will be performed
* and the value may change after or even while returning it.
*/
DirectResult fusion_ref_stat (FusionRef *ref, int *refs);
/*
* Wait for zero and lock.
*/
DirectResult fusion_ref_zero_lock (FusionRef *ref);
/*
* Check for zero and lock if true.
*/
DirectResult fusion_ref_zero_trylock (FusionRef *ref);
/*
* Unlock the counter.
* Only to be called after successful zero_lock or zero_trylock.
*/
DirectResult fusion_ref_unlock (FusionRef *ref);
/*
* Have the call executed when reference counter reaches zero.
*/
DirectResult fusion_ref_watch (FusionRef *ref,
FusionCall *call,
int call_arg);
/*
* Inherit local reference count from another reference.
*
* The local count of the other reference (and its inherited references) is added to this reference.
*/
DirectResult fusion_ref_inherit (FusionRef *ref,
FusionRef *from);
/*
* Deinitialize.
* Can be called after successful zero_lock or zero_trylock
* so that waiting fusion_ref_up calls return with DR_DESTROYED.
*/
DirectResult fusion_ref_destroy (FusionRef *ref);
#endif
|