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+/* sema.h - Definitions for semaphores.
+ Copyright (C) 2000 Werner Koch (dd9jn)
+ Copyright (C) 2001, 2003, 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. */
+
+#ifndef SEMA_H
+#define SEMA_H
+
+struct critsect_s
+{
+ const char *name;
+ void *priv;
+};
+
+#define DEFINE_GLOBAL_LOCK(name) \
+ struct critsect_s name = { #name, NULL }
+#define DEFINE_STATIC_LOCK(name) \
+ static struct critsect_s name = { #name, NULL }
+
+#define DECLARE_LOCK(name) \
+ struct critsect_s name
+#define INIT_LOCK(a) \
+ do \
+ { \
+ (a).name = #a; \
+ (a).priv = NULL; \
+ } \
+ while (0)
+#define DESTROY_LOCK(name) _gpgme_sema_cs_destroy (&(name))
+
+
+#define LOCK(name) \
+ do \
+ { \
+ _gpgme_sema_cs_enter (&(name)); \
+ } \
+ while (0)
+
+#define UNLOCK(name) \
+ do \
+ { \
+ _gpgme_sema_cs_leave (&(name)); \
+ } \
+ while (0)
+
+void _gpgme_sema_subsystem_init (void);
+void _gpgme_sema_cs_enter (struct critsect_s *s);
+void _gpgme_sema_cs_leave (struct critsect_s *s);
+void _gpgme_sema_cs_destroy (struct critsect_s *s);
+
+#endif /* SEMA_H */