1 files changed, 115 insertions, 0 deletions
diff --git a/src/w32-sema.c b/src/w32-sema.c
new file mode 100644
index 00000000..5228cc7c
--- /dev/null
+++ b/src/w32-sema.c
@@ -0,0 +1,115 @@
+/* w32-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>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <windows.h>
+#include <io.h>
+
+#include "util.h"
+#include "sema.h"
+#include "debug.h"
+
+static void
+sema_fatal (const char *text)
+{
+    fprintf (stderr, "sema.c: %s\n", text);
+    abort ();
+}
+
+
+static void
+critsect_init (struct critsect_s *s)
+{
+    CRITICAL_SECTION *mp;
+    static CRITICAL_SECTION init_lock;
+    static int initialized;
+    
+    if (!initialized) {
+        /* The very first time we call this function, we assume that
+	   only one thread is running, so that we can bootstrap the
+	   semaphore code.  */
+        InitializeCriticalSection (&init_lock);
+        initialized = 1;
+    }
+    if (!s)
+        return; /* we just want to initialize ourself */
+
+    /* first test whether it is really not initialized */
+    EnterCriticalSection (&init_lock);
+    if ( s->priv ) {
+        LeaveCriticalSection (&init_lock);
+        return;
+    }
+    /* now init it */
+    mp = malloc ( sizeof *mp );
+    if (!mp) {
+        LeaveCriticalSection (&init_lock);
+        sema_fatal ("out of core while creating critical section lock");
+    }
+    InitializeCriticalSection (mp);
+    s->priv = mp;
+    LeaveCriticalSection (&init_lock);
+}
+
+void
+_gpgme_sema_subsystem_init ()
+{
+    /* fixme: we should check that there is only one thread running */
+    critsect_init (NULL);
+}
+
+
+void
+_gpgme_sema_cs_enter ( struct critsect_s *s )
+{
+    if (!s->priv)
+        critsect_init (s);
+    EnterCriticalSection ( (CRITICAL_SECTION*)s->priv );
+}
+
+void
+_gpgme_sema_cs_leave (struct critsect_s *s)
+{
+    if (!s->priv)
+        critsect_init (s);
+    LeaveCriticalSection ((CRITICAL_SECTION*)s->priv);
+}
+
+void
+_gpgme_sema_cs_destroy ( struct critsect_s *s )
+{
+    if (s && s->priv) {
+        DeleteCriticalSection ((CRITICAL_SECTION*)s->priv);
+        free (s->priv);
+        s->priv = NULL;
+    }
+}