/*
   * include/linux/sync_file.h
   *
   * Copyright (C) 2012 Google, Inc.
   *
   * 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.
   *
   */
  
  #ifndef _LINUX_SYNC_FILE_H
  #define _LINUX_SYNC_FILE_H
  
  #include <linux/types.h>
  #include <linux/kref.h>
  #include <linux/ktime.h>
  #include <linux/list.h>
  #include <linux/spinlock.h>
  #include <linux/fence.h>

  #include <linux/fence-array.h>

  
  /**
   * struct sync_file - sync file to export to the userspace
   * @file:		file representing this fence
   * @kref:		reference count on fence.
   * @name:		name of sync_file.  Useful for debugging
   * @sync_file_list:	membership in global file list

   * @wq:			wait queue for fence signaling

   * @fence:		fence with the fences in the sync_file
   * @cb:			fence callback information

   */
  struct sync_file {
  	struct file		*file;
  	struct kref		kref;
  	char			name[32];
  #ifdef CONFIG_DEBUG_FS
  	struct list_head	sync_file_list;
  #endif

  
  	wait_queue_head_t	wq;

  	struct fence		*fence;
  	struct fence_cb cb;

  };

  #define POLL_ENABLED FENCE_FLAG_USER_BITS

  struct sync_file *sync_file_create(struct fence *fence);

  struct fence *sync_file_get_fence(int fd);

  
  #endif /* _LINUX_SYNC_H */