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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/posix/preinstall.am | |
| 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/posix/preinstall.am')
| -rw-r--r-- | cpukit/posix/preinstall.am | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/cpukit/posix/preinstall.am b/cpukit/posix/preinstall.am index 1d035e7425..4f1b220fe1 100644 --- a/cpukit/posix/preinstall.am +++ b/cpukit/posix/preinstall.am @@ -47,6 +47,10 @@ $(PROJECT_INCLUDE)/rtems/posix/priorityimpl.h: include/rtems/posix/priorityimpl. $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/posix/priorityimpl.h PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/posix/priorityimpl.h +$(PROJECT_INCLUDE)/rtems/posix/spinlockimpl.h: include/rtems/posix/spinlockimpl.h $(PROJECT_INCLUDE)/rtems/posix/$(dirstamp) + $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/posix/spinlockimpl.h +PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/posix/spinlockimpl.h + if HAS_PTHREADS $(PROJECT_INCLUDE)/aio.h: include/aio.h $(PROJECT_INCLUDE)/$(dirstamp) $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/aio.h @@ -144,14 +148,6 @@ PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/posix/rwlock.h $(PROJECT_INCLUDE)/rtems/posix/rwlockimpl.h: include/rtems/posix/rwlockimpl.h $(PROJECT_INCLUDE)/rtems/posix/$(dirstamp) $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/posix/rwlockimpl.h PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/posix/rwlockimpl.h - -$(PROJECT_INCLUDE)/rtems/posix/spinlock.h: include/rtems/posix/spinlock.h $(PROJECT_INCLUDE)/rtems/posix/$(dirstamp) - $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/posix/spinlock.h -PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/posix/spinlock.h - -$(PROJECT_INCLUDE)/rtems/posix/spinlockimpl.h: include/rtems/posix/spinlockimpl.h $(PROJECT_INCLUDE)/rtems/posix/$(dirstamp) - $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/posix/spinlockimpl.h -PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/posix/spinlockimpl.h endif if HAS_PTHREADS endif |