mirror of
https://gitlab.rtems.org/rtems/rtos/rtems.git
synced 2026-08-30 03:57:45 +08:00
Joel Sherrill
260e09260a
* spintrcritical_support/intrcritical.c, spintrcritical_support/intrcritical.h: Change prototype of delay method to indicate when counter is reset. This can be used to count how many iterations we are doing.
94 lines
2.0 KiB
C
94 lines
2.0 KiB
C
/*
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* COPYRIGHT (c) 1989-2009.
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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.com/license/LICENSE.
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*
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* $Id$
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*/
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#include <tmacros.h>
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#include <intrcritical.h>
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static uint32_t Maximum;
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static uint32_t Maximum_current;
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static rtems_id Timer;
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static rtems_timer_service_routine (*TSR)( rtems_id, void * );
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void interrupt_critical_section_test_support_initialize(
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rtems_timer_service_routine (*tsr)( rtems_id, void * )
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)
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{
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Watchdog_Interval initial;
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uint32_t counter;
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initial = _Watchdog_Ticks_since_boot;
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Timer = 0;
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TSR = tsr;
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if ( tsr ) {
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rtems_status_code rc;
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puts( "Support - rtems_timer_create - creating timer 1" );
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rc = rtems_timer_create( rtems_build_name( 'T', 'M', '1', ' ' ), &Timer );
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directive_failed( rc, "rtems_timer_create" );
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}
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/*
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* Wait for starting point
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*/
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for (counter=0 ; initial == _Watchdog_Ticks_since_boot ; counter++)
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;
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initial = _Watchdog_Ticks_since_boot;
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/*
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* Wait for ending point
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*/
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for (counter=0 ; initial == _Watchdog_Ticks_since_boot ; counter++)
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;
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Maximum = counter;
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Maximum_current = counter;
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#if 0
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printf( "%d 0x%08x counts\n", counter, counter );
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#endif
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}
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bool interrupt_critical_section_test_support_delay(void)
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{
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uint32_t counter;
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Watchdog_Interval initial;
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bool retval;
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if (TSR) {
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rtems_status_code rc;
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rc = rtems_timer_fire_after( Timer, 1, TSR, NULL );
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directive_failed( rc, "timer_fire_after failed" );
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}
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/*
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* Count down
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*/
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if ( !Maximum_current ) {
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Maximum_current = Maximum;
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retval = true;
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} else
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retval = false;
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initial = _Watchdog_Ticks_since_boot;
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for (counter=Maximum_current ; counter ; counter--)
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if ( initial != _Watchdog_Ticks_since_boot )
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break;
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Maximum_current--;
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/*
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* Return so the test can try to generate the condition
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*/
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return retval;
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}
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