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, 13 deletions

diff --git a/src/ath.h b/src/ath.h
index 8eb9eb95..a1be9e58 100644
--- a/src/ath.h
+++ b/src/ath.h
@@ -60,10 +60,6 @@
 #define _ATH_PREFIX1(x,y) x ## y
 #define _ATH_PREFIX2(x,y) _ATH_PREFIX1(x,y)
 #define _ATH_PREFIX(x) _ATH_PREFIX2(_ATH_EXT_SYM_PREFIX,x)
-#define ath_mutex_init _ATH_PREFIX(ath_mutex_init)
-#define ath_mutex_destroy _ATH_PREFIX(ath_mutex_destroy)
-#define ath_mutex_lock _ATH_PREFIX(ath_mutex_lock)
-#define ath_mutex_unlock _ATH_PREFIX(ath_mutex_unlock)
 #define ath_read _ATH_PREFIX(ath_read)
 #define ath_write _ATH_PREFIX(ath_write)
 #define ath_select _ATH_PREFIX(ath_select)
@@ -75,17 +71,8 @@
 #endif
 
 
-typedef void *ath_mutex_t;
-#define ATH_MUTEX_INITIALIZER 0;
-
 uintptr_t ath_self (void);
 
-/* Functions for mutual exclusion.  */
-int ath_mutex_init (ath_mutex_t *mutex);
-int ath_mutex_destroy (ath_mutex_t *mutex);
-int ath_mutex_lock (ath_mutex_t *mutex);
-int ath_mutex_unlock (ath_mutex_t *mutex);
-
 /* Replacement for the POSIX functions, which can be used to allow
    other (user-level) threads to run.  */
 gpgme_ssize_t ath_read (int fd, void *buf, size_t nbytes);