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, 51 deletions

diff --git a/src/ath.c b/src/ath.c
index ddd8a872..6b4667ef 100644
--- a/src/ath.c
+++ b/src/ath.c
@@ -49,11 +49,6 @@
 #include "ath.h"
 
 
-#define MUTEX_UNLOCKED	((ath_mutex_t) 0)
-#define MUTEX_LOCKED	((ath_mutex_t) 1)
-#define MUTEX_DESTROYED	((ath_mutex_t) 2)
-
-
 #ifdef HAVE_W32_SYSTEM
 #include <windows.h>
 uintptr_t
@@ -80,52 +75,6 @@ ath_self (void)
 #endif
 
 
-int
-ath_mutex_init (ath_mutex_t *lock)
-{
-#ifndef NDEBUG
-  *lock = MUTEX_UNLOCKED;
-#endif
-  return 0;
-}
-
-
-int
-ath_mutex_destroy (ath_mutex_t *lock)
-{
-#ifndef NDEBUG
-  assert (*lock == MUTEX_UNLOCKED);
-
-  *lock = MUTEX_DESTROYED;
-#endif
-  return 0;
-}
-
-
-int
-ath_mutex_lock (ath_mutex_t *lock)
-{
-#ifndef NDEBUG
-  assert (*lock == MUTEX_UNLOCKED);
-
-  *lock = MUTEX_LOCKED;
-#endif
-  return 0;
-}
-
-
-int
-ath_mutex_unlock (ath_mutex_t *lock)
-{
-#ifndef NDEBUG
-  assert (*lock == MUTEX_LOCKED);
-
-  *lock = MUTEX_UNLOCKED;
-#endif
-  return 0;
-}
-
-
 gpgme_ssize_t
 ath_read (int fd, void *buf, size_t nbytes)
 {