sync: Add lib sync helper library

Used to talk to kernel synchronization framework

Change-Id: I66e1f4a90f5d58d384bf1cec09db52101f182c5e
Signed-off-by: Erik Gilling <konkers@android.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/include/sync/sync.h b/include/sync/sync.h
new file mode 100644
index 0000000..6aa5f2d
--- /dev/null
+++ b/include/sync/sync.h
@@ -0,0 +1,45 @@
+/*
+ *  sync.h
+ *
+ *   Copyright 2012 Google, Inc
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#ifndef __SYS_CORE_SYNC_H
+#define __SYS_CORE_SYNC_H
+
+#include <linux/sync.h>
+#include <linux/sw_sync.h>
+
+__BEGIN_DECLS
+
+/* timeout in msecs */
+int sync_wait(int fd, unsigned int timeout);
+int sync_merge(const char *name, int fd1, int fd2);
+struct sync_fence_info_data *sync_fence_info(int fd);
+struct sync_pt_info *sync_pt_info(struct sync_fence_info_data *info,
+                                  struct sync_pt_info *itr);
+void sync_fence_info_free(struct sync_fence_info_data *info);
+
+/* sw_sync is mainly inteded for testing and should not be complied into
+ * production kernels
+ */
+
+int sw_sync_timeline_create(void);
+int sw_sync_timeline_inc(int fd, unsigned count);
+int sw_sync_fence_create(int fd, const char *name, unsigned value);
+
+__END_DECLS
+
+#endif /* __SYS_CORE_SYNC_H */