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Sebastian Huber
c42be504c9
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.
58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
/**
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* @file
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*
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* Simple test program wrapper for Spinlocks
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*/
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/*
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* COPYRIGHT (c) 1989-2012.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#define CONFIGURE_INIT
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <bsp.h>
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#include <pmacros.h>
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/* forward declarations to avoid warnings */
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rtems_task Init(rtems_task_argument ignored);
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void test_main(void);
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rtems_task Init(
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rtems_task_argument ignored
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)
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{
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test_main();
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rtems_test_exit( 0 );
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}
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/* configuration information */
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#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
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#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
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#define CONFIGURE_MAXIMUM_TASKS 2
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#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
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#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
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#define CONFIGURE_INIT_TASK_STACK_SIZE (RTEMS_MINIMUM_STACK_SIZE * 2)
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#define CONFIGURE_INIT_TASK_PRIORITY 2
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#define CONFIGURE_INIT_TASK_INITIAL_MODES RTEMS_PREEMPT
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#define CONFIGURE_EXTRA_TASK_STACKS RTEMS_MINIMUM_STACK_SIZE
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#define CONFIGURE_INIT
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#include <rtems/confdefs.h>
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/* end of file */
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