1 /*****************************************************************************
2 * vlc_gcrypt.h: VLC thread support for gcrypt
3 *****************************************************************************
4 * Copyright (C) 2004-2008 RĂ©mi Denis-Courmont
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
19 *****************************************************************************/
21 #ifdef LIBVLC_USE_PTHREAD
23 * If possible, use gcrypt-provided thread implementation. This is so that
24 * other non-VLC components (inside the process) can also use gcrypt safely.
26 GCRY_THREAD_OPTION_PTHREAD_IMPL
;
27 # define gcry_threads_vlc gcry_threads_pthread
30 * gcrypt thread option VLC implementation
33 static int gcry_vlc_mutex_init( void **p_sys
)
36 vlc_mutex_t
*p_lock
= (vlc_mutex_t
*)malloc( sizeof( vlc_mutex_t
) );
41 i_val
= vlc_mutex_init( p_lock
);
49 static int gcry_vlc_mutex_destroy( void **p_sys
)
51 vlc_mutex_t
*p_lock
= (vlc_mutex_t
*)*p_sys
;
52 vlc_mutex_destroy( p_lock
);
57 static int gcry_vlc_mutex_lock( void **p_sys
)
59 vlc_mutex_lock( (vlc_mutex_t
*)*p_sys
);
63 static int gcry_vlc_mutex_unlock( void **lock
)
65 vlc_mutex_unlock( (vlc_mutex_t
*)*lock
);
69 static struct gcry_thread_cbs gcry_threads_vlc
=
71 GCRY_THREAD_OPTION_USER
,
74 gcry_vlc_mutex_destroy
,
81 * Initializes gcrypt with proper locking.
82 * @return VLC_SUCCESS on success, a VLC error code otherwise.
84 static inline void vlc_gcrypt_init (void)
86 vlc_mutex_t
*lock
= var_AcquireMutex ("gcrypt_mutex");
87 gcry_control (GCRYCTL_SET_THREAD_CBS
, &gcry_threads_vlc
);
88 vlc_mutex_unlock (lock
);