core: Use gpgrt locking for thread safeness

* configure.ac: Require libgpg-error 1.17. No longer
check for pthread.
* doc/gpgme.texi: Document removed neccessity for thread
safe gpgme flavours.
* src/sema.h (DEFINE_GLOBAL_LOCK),
(DEFINE_STATIC_LOCK, INIT_LOCK, DECLARE_LOCK)
(DESTROY_LOCK, LOCK, UNLOCK): Change to gpgrt equivalents.
* src/posix-sema.c, src/w32-sema.c: Removed.
* src/Makefile.am: Remove libpthread and
Update accordingly.
* src/ath.c, src/ath.h (ath_mutex_init)
(ath_mutex_destroy, ath_mutex_lock, ath_mutex_unlock): Removed.
* src/ath.h (ATH_MUTEX_INITIALIZER): Removed.
* src/version.c (do_subsystem_inits): sema_subsystem_init is
no longer required.
* tests/gpg/Makefile.am: Add new threading tests.
(t_thread1_LDADD, t_cancel_LDADD):
Use just gpgme.
* tests/gpg/t-thread-keylist-verify.c,
tests/gpg/t-thread-keylist.c: New.
* src/gpgme-config.in: Use -lgpgme for thread-model pthread.

--
Using gpgrt locks instead of pthread locks removes
the neccessity to link pthread directly to gpgme and
have a different, thread safe flavor of gpgme. Now
gpgme is thread-safe if the conditions mentioned
in the doc are met.

As the cpp bindings linked against libgpgme
and not libgpgme-pthread this fixes threading problems
with them.

libgpgme-pthread is removed but gpgme-config still supports
--thread=pthread for compatibility with find scripts.

1 files changed, 0 insertions, 68 deletions

diff --git a/src/posix-sema.c b/src/posix-sema.c
deleted file mode 100644
index d04ce616..00000000
--- a/src/posix-sema.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/* posix-sema.c
-   Copyright (C) 2001 Werner Koch (dd9jn)
-   Copyright (C) 2001, 2002, 2004, 2007 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 Lesser General Public License as
-   published by the Free Software Foundation; either version 2.1 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
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-   02111-1307, USA.  */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <errno.h>
-#include <signal.h>
-#include <fcntl.h>
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-#ifdef HAVE_SYS_TIME_H
-# include <sys/time.h>
-#endif
-#ifdef HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-
-#include "util.h"
-#include "sema.h"
-#include "ath.h"
-
-void
-_gpgme_sema_subsystem_init ()
-{
-}
-
-void
-_gpgme_sema_cs_enter (struct critsect_s *s)
-{
-  _gpgme_ath_mutex_lock (&s->priv);
-}
-
-void
-_gpgme_sema_cs_leave (struct critsect_s *s)
-{
-  _gpgme_ath_mutex_unlock (&s->priv);
-}
-
-void
-_gpgme_sema_cs_destroy (struct critsect_s *s)
-{
-  _gpgme_ath_mutex_destroy (&s->priv);
-  s->priv = NULL;
-}