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coremutex.inl @ 5870ac55

4.104.114.84.95

Last change on this file since 5870ac55 was 5870ac55, checked in by Joel Sherrill <joel.sherrill@…>, on 01/05/00 at 22:19:21
Added support for simple binary semaphores in addition to the high power binary/mutex style semaphores already supported by RTEMS. This was done at the request of Eric Norum <eric@…> in support of his effort to port EPICS to RTEMS. This change consisted of changing the nesting_allowed boolean into a lock_nesting_behavior enumerated value as well as allowing the core mutex object to optionally support ensuring that the holder of a binary semaphore released it. Finally, a more subtle enhancement was to allow the non-holder to release a priority inheritance/ceiling mutex and still allow the holding task to return to its original priority.
Property mode set to `100644`
File size: 1.3 KB

Line
1	/* macros/coremutex.h
2	*
3	* This include file contains all of the inlined routines associated
4	* with core mutexes.
5	*
6	* COPYRIGHT (c) 1989-1999.
7	* On-Line Applications Research Corporation (OAR).
8	*
9	* The license and distribution terms for this file may be
10	* found in the file LICENSE in this distribution or at
11	* http://www.OARcorp.com/rtems/license.html.
12	*
13	* $Id$
14	*/
15
16	#ifndef __MACROS_CORE_MUTEX_h
17	#define __MACROS_CORE_MUTEX_h
18
19
20	/*PAGE
21	*
22	* _CORE_mutex_Is_locked
23	*
24	*/
25
26	#define _CORE_mutex_Is_locked( _the_mutex ) \
27	( (_the_mutex)->lock == CORE_MUTEX_LOCKED )
28
29	/*PAGE
30	*
31	* _CORE_mutex_Is_fifo
32	*
33	*/
34
35	#define _CORE_mutex_Is_fifo( _the_attribute ) \
36	( (_the_attribute)->discipline == CORE_MUTEX_DISCIPLINES_FIFO )
37
38	/*PAGE
39	*
40	* _CORE_mutex_Is_priority
41	*
42	*/
43
44	#define _CORE_mutex_Is_priority( _the_attribute ) \
45	( (_the_attribute)->discipline == CORE_MUTEX_DISCIPLINES_PRIORITY )
46
47	/*PAGE
48	*
49	* _CORE_mutex_Is_inherit_priority
50	*
51	*/
52
53	#define _CORE_mutex_Is_inherit_priority( _the_attribute ) \
54	( (_the_attribute)->discipline == \
55	CORE_MUTEX_DISCIPLINES_PRIORITY_INHERIT )
56
57	/*PAGE
58	*
59	* _CORE_mutex_Is_priority_ceiling
60	*
61	*/
62
63	#define _CORE_mutex_Is_priority_ceiling( _the_attribute )\
64	( (_the_attribute)->discipline == CORE_MUTEX_DISCIPLINES_PRIORITY_CEILING )
65
66	#endif
67	/* end of include file */

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