forked from Archive/PX4-Autopilot
110 lines
4.6 KiB
C
110 lines
4.6 KiB
C
|
/****************************************************************************
|
||
|
|
* graphics/nxtk/nxtk_block.c
|
||
|
|
*
|
||
|
|
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
|
||
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
*
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in
|
||
|
|
* the documentation and/or other materials provided with the
|
||
|
|
* distribution.
|
||
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
||
|
|
* used to endorse or promote products derived from this software
|
||
|
|
* without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Included Files
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
#include <nuttx/config.h>
|
||
|
|
|
||
|
|
#include <nuttx/nx/nx.h>
|
||
|
|
#include <nuttx/nx/nxtk.h>
|
||
|
|
|
||
|
|
#include "nxfe.h"
|
||
|
|
|
||
|
|
#ifdef CONFIG_NX_MULTIUSER
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Pre-Processor Definitions
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Private Types
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Private Data
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Public Data
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Private Functions
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Public Functions
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Name: nxtk_block
|
||
|
|
*
|
||
|
|
* Description:
|
||
|
|
* This is callback will do to things: (1) any queue a 'blocked' callback
|
||
|
|
* to the window and then (2) block any further window messaging.
|
||
|
|
*
|
||
|
|
* The 'blocked' callback is the response from nx_block (or nxtk_block).
|
||
|
|
* Those blocking interfaces are used to assure that no further messages are
|
||
|
|
* are directed to the window. Receipt of the blocked callback signifies
|
||
|
|
* that (1) there are no further pending callbacks and (2) that the
|
||
|
|
* window is now 'defunct' and will receive no further callbacks.
|
||
|
|
*
|
||
|
|
* This callback supports coordinated destruction of a window in multi-
|
||
|
|
* user mode. In multi-use mode, the client window logic must stay
|
||
|
|
* intact until all of the queued callbacks are processed. Then the
|
||
|
|
* window may be safely closed. Closing the window prior with pending
|
||
|
|
* callbacks can lead to bad behavior when the callback is executed.
|
||
|
|
*
|
||
|
|
* Multiple user mode only!
|
||
|
|
*
|
||
|
|
* Input Parameters:
|
||
|
|
* hfwnd - The window to be blocked
|
||
|
|
* arg - An argument that will accompany the block messages (This is arg2
|
||
|
|
* in the blocked callback).
|
||
|
|
*
|
||
|
|
* Return:
|
||
|
|
* OK on success; ERROR on failure with errno set appropriately
|
||
|
|
*
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
int nxtk_block(NXTKWINDOW hfwnd, FAR void *arg)
|
||
|
|
{
|
||
|
|
return nx_block((NXWINDOW)hfwnd, arg);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* CONFIG_NX_MULTIUSER */
|