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| 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/libcsupport/src/resource_snapshot.c | |
| 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 '')
| -rw-r--r-- | cpukit/libcsupport/src/resource_snapshot.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/cpukit/libcsupport/src/resource_snapshot.c b/cpukit/libcsupport/src/resource_snapshot.c index 23177c4c37..d0dda9f7ca 100644 --- a/cpukit/libcsupport/src/resource_snapshot.c +++ b/cpukit/libcsupport/src/resource_snapshot.c @@ -49,7 +49,6 @@ #include <rtems/posix/pthreadimpl.h> #include <rtems/posix/rwlockimpl.h> #include <rtems/posix/semaphoreimpl.h> - #include <rtems/posix/spinlockimpl.h> #include <rtems/posix/timerimpl.h> #endif @@ -76,7 +75,6 @@ static const struct { { OBJECTS_POSIX_API, OBJECTS_POSIX_MUTEXES }, { OBJECTS_POSIX_API, OBJECTS_POSIX_RWLOCKS }, { OBJECTS_POSIX_API, OBJECTS_POSIX_SEMAPHORES }, - { OBJECTS_POSIX_API, OBJECTS_POSIX_SPINLOCKS }, { OBJECTS_POSIX_API, OBJECTS_POSIX_THREADS }, { OBJECTS_POSIX_API, OBJECTS_POSIX_TIMERS } #endif |