From c42be504c92d76d2e06d0fc8ebd05fc913376d2d Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Wed, 16 Nov 2016 14:50:09 +0100 Subject: 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 . 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. --- testsuites/psxtests/psxconfig01/init.c | 13 ------------- 1 file changed, 13 deletions(-) (limited to 'testsuites/psxtests/psxconfig01/init.c') diff --git a/testsuites/psxtests/psxconfig01/init.c b/testsuites/psxtests/psxconfig01/init.c index 582fd11197..1513b54d73 100644 --- a/testsuites/psxtests/psxconfig01/init.c +++ b/testsuites/psxtests/psxconfig01/init.c @@ -67,7 +67,6 @@ const char rtems_test_name[] = "PSXCONFIG 1"; #define CONFIGURE_MAXIMUM_POSIX_QUEUED_SIGNALS 7 #define CONFIGURE_MAXIMUM_POSIX_RWLOCKS 31 #define CONFIGURE_MAXIMUM_POSIX_SEMAPHORES 41 -#define CONFIGURE_MAXIMUM_POSIX_SPINLOCKS 17 #define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION #define CONFIGURE_MAXIMUM_POSIX_THREADS 3 @@ -515,18 +514,6 @@ static rtems_task Init(rtems_task_argument argument) ); #endif -#ifdef CONFIGURE_MAXIMUM_POSIX_SPINLOCKS - for (i = 0; i < CONFIGURE_MAXIMUM_POSIX_SPINLOCKS; ++i) { - pthread_spinlock_t spinlock; - eno = pthread_spin_init(&spinlock, 0); - rtems_test_assert(eno == 0); - } - rtems_resource_snapshot_take(&snapshot); - rtems_test_assert( - snapshot.posix_api.active_spinlocks == CONFIGURE_MAXIMUM_POSIX_SPINLOCKS - ); -#endif - #ifdef CONFIGURE_MAXIMUM_POSIX_THREADS for (i = 0; i < CONFIGURE_MAXIMUM_POSIX_THREADS; ++i) { pthread_t thread; -- cgit v1.2.3