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| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2000-01-05 22:19:21 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2000-01-05 22:19:21 +0000 |
| commit | 5870ac55678115857215a4199f519263599ee341 (patch) | |
| tree | 8b6f044ae7cccc3da9a3bd69b2468c2ca77acff8 /cpukit/rtems/include/rtems/rtems/attr.h | |
| parent | Updated to reflect a time that had previously been left out due to (diff) | |
| download | rtems-5870ac55678115857215a4199f519263599ee341.tar.bz2 | |
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@cls.usask.ca> 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.
Diffstat (limited to 'cpukit/rtems/include/rtems/rtems/attr.h')
| -rw-r--r-- | cpukit/rtems/include/rtems/rtems/attr.h | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/cpukit/rtems/include/rtems/rtems/attr.h b/cpukit/rtems/include/rtems/rtems/attr.h index 20d8eebe01..b054bd6684 100644 --- a/cpukit/rtems/include/rtems/rtems/attr.h +++ b/cpukit/rtems/include/rtems/rtems/attr.h @@ -37,17 +37,16 @@ typedef unsigned32 rtems_attribute; #define RTEMS_FIFO 0x00000000 /* process RTEMS_FIFO */ #define RTEMS_PRIORITY 0x00000004 /* process by priority */ -#define RTEMS_COUNTING_SEMAPHORE 0x00000000 -#define RTEMS_BINARY_SEMAPHORE 0x00000010 +#define RTEMS_SEMAPHORE_CLASS 0x00000030 /* mask */ +#define RTEMS_COUNTING_SEMAPHORE 0x00000000 +#define RTEMS_BINARY_SEMAPHORE 0x00000010 +#define RTEMS_SIMPLE_BINARY_SEMAPHORE 0x00000020 #define RTEMS_NO_INHERIT_PRIORITY 0x00000000 -#define RTEMS_INHERIT_PRIORITY 0x00000020 +#define RTEMS_INHERIT_PRIORITY 0x00000040 #define RTEMS_NO_PRIORITY_CEILING 0x00000000 -#define RTEMS_PRIORITY_CEILING 0x00000040 - -#define RTEMS_NESTING_ALLOWED 0x00000000 -#define RTEMS_NO_NESTING_ALLOWED 0x00000080 +#define RTEMS_PRIORITY_CEILING 0x00000080 #define RTEMS_APPLICATION_TASK 0x00000000 #define RTEMS_SYSTEM_TASK 0x00000100 |