cpukit/libdrvmgr/drvmgr_lock.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /* Driver Manager Internal locking implementation
0004  *
0005  * COPYRIGHT (c) 2009 Cobham Gaisler AB.
0006  *
0007  * Redistribution and use in source and binary forms, with or without
0008  * modification, are permitted provided that the following conditions
0009  * are met:
0010  * 1. Redistributions of source code must retain the above copyright
0011  *    notice, this list of conditions and the following disclaimer.
0012  * 2. Redistributions in binary form must reproduce the above copyright
0013  *    notice, this list of conditions and the following disclaimer in the
0014  *    documentation and/or other materials provided with the distribution.
0015  *
0016  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0017  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0018  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0019  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0020  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0021  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0022  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0023  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0024  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0025  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0026  * POSSIBILITY OF SUCH DAMAGE.
0027  */
0028
0029 #include <drvmgr/drvmgr.h>
0030 #include "drvmgr_internal.h"
0031 #include <rtems/score/sysstate.h>
0032
0033 void _DRV_Manager_Lock( void )
0034 {
0035   if ( !_System_state_Is_before_initialization( _System_state_Get() ) ) {
0036     _API_Mutex_Lock( &drvmgr.lock );
0037   }
0038 }
0039
0040 void _DRV_Manager_Unlock(void)
0041 {
0042   if ( !_System_state_Is_before_initialization( _System_state_Get() ) ) {
0043     _API_Mutex_Unlock( &drvmgr.lock );
0044   }
0045 }