updates.

[silc.git] / lib / silcutil / os2 / silcos2mutex.c

diff --git a/lib/silcutil/os2/silcos2mutex.c b/lib/silcutil/os2/silcos2mutex.c
new file mode 100644 (file)
index 0000000..a798145
--- /dev/null
+++ b/lib/silcutil/os2/silcos2mutex.c
@@ -0,0 +1,68 @@
+/*
+
+  silcos2mutex.c 
+
+  Author: Pekka Riikonen <priikone@silcnet.org>
+
+  Copyright (C) 2002 Pekka Riikonen
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; version 2 of the License.
+
+  This program 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 General Public License for more details.
+
+*/
+/* I used Apache's APR code as a reference here. */
+/* $Id$ */
+
+#include "silcincludes.h"
+
+#ifdef SILC_THREADS
+
+/* SILC Mutex structure */
+struct SilcMutexStruct {
+  HMTX mutex;
+};
+
+bool silc_mutex_alloc(SilcMutex *mutex)
+{
+  char name[64];
+
+  *mutex = silc_calloc(1, sizeof(**mutex));
+  if (*mutex == NULL)
+    return FALSE;
+
+  /* Create the lock. Is the name working? :) */
+  memset(name, 0, sizeof(name));
+  snprintf(name, sizeof(name) - 1, "%p/SEM32/SILC1234$", *mutex);
+  if (!DosCreateMutexSem(name, &(*mutex)->mutex, DC_SEM_SHARED, FALSE)) {
+    silc_free(*mutex);
+    return FALSE;
+  }
+
+  return TRUE;
+}
+
+void silc_mutex_free(SilcMutex mutex)
+{
+  DosCloseMutexSem(mutex->mutex);
+  silc_free(mutex);
+}
+
+void silc_mutex_lock(SilcMutex mutex)
+{
+  if (!DosRequestMutexSem(mutex->mutex, SEM_INDEFINITE_WAIT))
+    assert(FALSE);
+}
+
+void silc_mutex_unlock(SilcMutex mutex)
+{
+  if (!DosReleaseMutexSem(mutex->mutex)
+    assert(FALSE);
+}
+
+#endif /* SILC_THREADS */