4.104.114.84.95
Last change
on this file since df976833 was
df976833,
checked in by Joel Sherrill <joel.sherrill@…>, on 07/07/00 at 19:31:30
|
Fixed problem reported by Victor V. Vengerov <Victor.Vengerov@…>
where alarm() did not correctly account for the watchdog start_time
and stop_time fields being based on ticks not seconds. This resulted
in alarm() returning a bogus number of seconds remaining.
|
-
Property mode set to
100644
|
File size:
1.2 KB
|
Rev | Line | |
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[07d880f4] | 1 | /* |
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| 2 | * 3.4.1 Schedule Alarm, P1003.1b-1993, p. 79 |
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| 3 | * |
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[08311cc3] | 4 | * COPYRIGHT (c) 1989-1999. |
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[07d880f4] | 5 | * On-Line Applications Research Corporation (OAR). |
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| 6 | * |
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| 7 | * The license and distribution terms for this file may be |
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| 8 | * found in the file LICENSE in this distribution or at |
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| 9 | * http://www.OARcorp.com/rtems/license.html. |
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| 10 | * |
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| 11 | * $Id$ |
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| 12 | */ |
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| 13 | |
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| 14 | |
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| 15 | #include <pthread.h> |
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| 16 | #include <errno.h> |
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| 17 | |
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| 18 | #include <rtems/system.h> |
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| 19 | #include <rtems/posix/pthread.h> |
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| 20 | #include <rtems/posix/psignal.h> |
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| 21 | |
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| 22 | unsigned int alarm( |
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| 23 | unsigned int seconds |
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| 24 | ) |
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| 25 | { |
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| 26 | unsigned int remaining = 0; |
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| 27 | Watchdog_Control *the_timer; |
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| 28 | |
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| 29 | the_timer = &_POSIX_signals_Alarm_timer; |
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| 30 | |
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| 31 | switch ( _Watchdog_Remove( the_timer ) ) { |
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| 32 | case WATCHDOG_INACTIVE: |
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| 33 | case WATCHDOG_BEING_INSERTED: |
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| 34 | break; |
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| 35 | |
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| 36 | case WATCHDOG_ACTIVE: |
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| 37 | case WATCHDOG_REMOVE_IT: |
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[df976833] | 38 | /* |
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| 39 | * The stop_time and start_time fields are snapshots of ticks since |
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| 40 | * boot. Since alarm() is dealing in seconds, we must account for |
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| 41 | * this. |
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| 42 | */ |
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| 43 | |
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[07d880f4] | 44 | remaining = the_timer->initial - |
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[df976833] | 45 | ((the_timer->stop_time - the_timer->start_time) / _TOD_Ticks_per_second); |
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[07d880f4] | 46 | break; |
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| 47 | } |
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| 48 | |
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| 49 | _Watchdog_Insert_seconds( the_timer, seconds ); |
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| 50 | |
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| 51 | return remaining; |
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| 52 | } |
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| 53 | |
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