really create glitch-free branch

git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/glitch-free@2120 fefdeb5f-60dc-0310-8127-8f9354f1896f

1 files changed, 49 insertions, 0 deletions

diff --git a/src/pulsecore/fdsem.h b/src/pulsecore/fdsem.h
new file mode 100644
index 00000000..f38ef205
--- /dev/null
+++ b/src/pulsecore/fdsem.h
@@ -0,0 +1,49 @@
+#ifndef foopulsefdsemhfoo
+#define foopulsefdsemhfoo
+
+/* $Id$ */
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2004-2006 Lennart Poettering
+
+  PulseAudio 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.
+
+  PulseAudio 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 PulseAudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#include <sys/types.h>
+#include <pulse/def.h>
+
+/* A simple, asynchronous semaphore which uses fds for sleeping. In
+ * the best case all functions are lock-free unless sleeping is
+ * required.  */
+
+typedef struct pa_fdsem pa_fdsem;
+
+pa_fdsem *pa_fdsem_new(void);
+void pa_fdsem_free(pa_fdsem *f);
+
+void pa_fdsem_post(pa_fdsem *f);
+void pa_fdsem_wait(pa_fdsem *f);
+int pa_fdsem_try(pa_fdsem *f);
+
+int pa_fdsem_get(pa_fdsem *f);
+
+int pa_fdsem_before_poll(pa_fdsem *f);
+int pa_fdsem_after_poll(pa_fdsem *f);
+
+
+#endif