diff options
author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-11-16 14:50:09 +0100 |
---|---|---|
committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-11-23 12:52:06 +0100 |
commit | c42be504c92d76d2e06d0fc8ebd05fc913376d2d (patch) | |
tree | 259f8a712a6139f427888647955bc3c95480877e /cpukit/rtems | |
parent | score: Add RTEMS_ALIAS() (diff) | |
download | rtems-c42be504c92d76d2e06d0fc8ebd05fc913376d2d.tar.bz2 |
posix: Add self-contained pthread spinlock
Turn pthread_spinlock_t into a self-contained object. On uni-processor
configurations, interrupts are disabled in the lock/trylock operations
and the previous interrupt status is restored in the corresponding
unlock operations. On SMP configurations, a ticket lock is a acquired
and released in addition.
The self-contained pthread_spinlock_t object is defined by Newlib in
<sys/_pthreadtypes.h>.
typedef struct {
struct _Ticket_lock_Control _lock;
__uint32_t _interrupt_state;
} pthread_spinlock_t;
This implementation is simple and efficient. However, this test case of
the Linux Test Project would fail due to call of printf() and sleep()
during spin lock ownership:
https://github.com/linux-test-project/ltp/blob/master/testcases/open_posix_testsuite/conformance/interfaces/pthread_spin_lock/1-2.c
There is only limited support for profiling on SMP configurations.
Delete CORE spinlock implementation.
Update #2674.
Diffstat (limited to 'cpukit/rtems')
-rw-r--r-- | cpukit/rtems/src/rtemsobjectgetapiclassname.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/cpukit/rtems/src/rtemsobjectgetapiclassname.c b/cpukit/rtems/src/rtemsobjectgetapiclassname.c index dd92e6ce6e..07bfb1b3a0 100644 --- a/cpukit/rtems/src/rtemsobjectgetapiclassname.c +++ b/cpukit/rtems/src/rtemsobjectgetapiclassname.c @@ -54,7 +54,6 @@ static const rtems_assoc_t rtems_object_api_posix_assoc[] = { { "Condition Variable", OBJECTS_POSIX_CONDITION_VARIABLES, 0}, { "Timer", OBJECTS_POSIX_TIMERS, 0}, { "Barrier", OBJECTS_POSIX_BARRIERS, 0}, - { "Spinlock", OBJECTS_POSIX_SPINLOCKS, 0}, { "RWLock", OBJECTS_POSIX_RWLOCKS, 0}, { NULL, 0, 0} }; |