mirror of https://code.videolan.org/videolan/vlc
49 lines
2.0 KiB
C
49 lines
2.0 KiB
C
/*****************************************************************************
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* vlc_gcrypt.h: VLC thread support for gcrypt
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*****************************************************************************
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* Copyright (C) 2004-2010 Rémi Denis-Courmont
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/**
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* \file
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* This file implements gcrypt support functions in vlc
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*/
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#include <vlc_threads.h>
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#include <errno.h>
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static inline void vlc_gcrypt_init (void)
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{
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/* This would need a process-wide static mutex with all libraries linking
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* to a given instance of libgcrypt. We cannot do this as we have different
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* plugins linking with gcrypt, and some underlying libraries may use it
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* behind our back. Only way is to always link gcrypt statically (ouch!) or
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* have upstream gcrypt provide one shared object per threading system. */
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static bool done = false;
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vlc_global_lock (VLC_GCRYPT_MUTEX);
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if (!done)
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{
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/* The suggested way for an application to make sure that global_init
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* has been called is by using gcry_check_version. (see global_init
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* comments in gcrypt sources) */
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gcry_check_version(NULL);
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done = true;
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}
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vlc_global_unlock (VLC_GCRYPT_MUTEX);
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}
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