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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2007-12-17 16:01:42 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2007-12-17 16:01:42 +0000 |
commit | a6cbc9b8690825aebde9694e9132230d57d53847 (patch) | |
tree | 0974c40531822c54d167e4bdea37e57dca40ec9e /cpukit/posix/src/timerinserthelper.c | |
parent | Formatting. (diff) | |
download | rtems-a6cbc9b8690825aebde9694e9132230d57d53847.tar.bz2 |
2007-12-17 Joel Sherrill <joel.sherrill@OARcorp.com>
* posix/Makefile.am, posix/preinstall.am,
posix/include/rtems/posix/timer.h, score/src/objectget.c: Split POSIX
Timer implementation into multiple files. Add obvious error checks
for NULL parameters. Attempt to reduce include files.
* posix/src/timercreate.c, posix/src/timerdelete.c,
posix/src/timergetoverrun.c, posix/src/timergettime.c,
posix/src/timerinserthelper.c, posix/src/timersettime.c,
posix/src/timertsr.c: New files.
* posix/src/ptimer1.c: Removed.
Diffstat (limited to 'cpukit/posix/src/timerinserthelper.c')
-rw-r--r-- | cpukit/posix/src/timerinserthelper.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/cpukit/posix/src/timerinserthelper.c b/cpukit/posix/src/timerinserthelper.c new file mode 100644 index 0000000000..79178ca605 --- /dev/null +++ b/cpukit/posix/src/timerinserthelper.c @@ -0,0 +1,57 @@ +/* + * Helper routine for POSIX timers + * + * COPYRIGHT (c) 1989-2007. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#include <time.h> + +#include <rtems/system.h> +#include <rtems/seterr.h> +#include <rtems/score/isr.h> +#include <rtems/score/watchdog.h> +#include <rtems/posix/timer.h> +#include <rtems/posix/ptimer.h> + +boolean _POSIX_Timer_Insert_helper( + Watchdog_Control *timer, + Watchdog_Interval ticks, + Objects_Id id, + Watchdog_Service_routine_entry TSR, + void *arg +) +{ + ISR_Level level; + + (void) _Watchdog_Remove( timer ); + _ISR_Disable( level ); + + /* + * Check to see if the watchdog has just been inserted by a + * higher priority interrupt. If so, abandon this insert. + */ + if ( timer->state != WATCHDOG_INACTIVE ) { + _ISR_Enable( level ); + return FALSE; + } + + /* + * OK. Now we now the timer was not rescheduled by an interrupt + * so we can atomically initialize it as in use. + */ + _Watchdog_Initialize( timer, TSR, id, arg ); + _Watchdog_Insert_ticks( timer, ticks ); + _ISR_Enable( level ); + return TRUE; +} |