diff options
Diffstat (limited to 'libkdenetwork/libgpgme-copy/gpgme/ath-pth-compat.c')
-rw-r--r-- | libkdenetwork/libgpgme-copy/gpgme/ath-pth-compat.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/libkdenetwork/libgpgme-copy/gpgme/ath-pth-compat.c b/libkdenetwork/libgpgme-copy/gpgme/ath-pth-compat.c new file mode 100644 index 000000000..7bdea8762 --- /dev/null +++ b/libkdenetwork/libgpgme-copy/gpgme/ath-pth-compat.c @@ -0,0 +1,123 @@ +/* ath-pth.c - Pth module for self-adapting thread-safeness library + * Copyright (C) 2002 g10 Code GmbH + * + * This file is part of GPGME. + * + * GPGME is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GPGME 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#include <stdlib.h> +#include <errno.h> +#include <pth.h> + +#include "ath.h" + +#pragma weak pth_mutex_init +#pragma weak pth_mutex_acquire +#pragma weak pth_mutex_release +#pragma weak pth_read +#pragma weak pth_write +#pragma weak pth_select +#pragma weak pth_waitpid +#pragma weak pth_accept +#pragma weak pth_connect + +/* The lock we take while checking for lazy lock initialization. */ +static pth_mutex_t check_init_lock = PTH_MUTEX_INIT; + +/* Initialize the mutex *PRIV. If JUST_CHECK is true, only do this if + it is not already initialized. */ +static int +mutex_pth_init (void **priv, int just_check) +{ + int err = 0; + + if (just_check) + pth_mutex_acquire (&check_init_lock, 0, NULL); + if (!*priv || !just_check) + { + pth_mutex_t *lock = malloc (sizeof (pth_mutex_t)); + if (!lock) + err = ENOMEM; + if (!err) + { + err = pth_mutex_init (lock); + if (err == FALSE) + err = errno; + else + err = 0; + + if (err) + free (lock); + else + *priv = lock; + } + } + if (just_check) + pth_mutex_release (&check_init_lock); + return err; +} + + +static int +mutex_pth_destroy (void *priv) +{ + free (priv); + return 0; +} + + +static int +mutex_pth_lock (void *priv) +{ + int ret = pth_mutex_acquire ((pth_mutex_t *) priv, 0, NULL); + return ret == FALSE ? errno : 0; +} + + +static int +mutex_pth_unlock (void *priv) +{ + int ret = pth_mutex_release ((pth_mutex_t *) priv); + return ret == FALSE ? errno : 0; +} + + +static struct ath_ops ath_pth_ops = + { + mutex_pth_init, + mutex_pth_destroy, + mutex_pth_lock, + mutex_pth_unlock, + pth_read, + pth_write, + pth_select, + pth_waitpid, + pth_accept, + pth_connect, + NULL, /* FIXME: When GNU PTh has sendmsg. */ + NULL /* FIXME: When GNU PTh has recvmsg. */ + }; + + +struct ath_ops * +ath_pth_available (void) +{ + if (pth_mutex_init && pth_mutex_acquire && pth_mutex_release + && pth_read && pth_write && pth_select && pth_waitpid) + return &ath_pth_ops; + else + return 0; +} |