[PATCH] part of implimenting a monotonic clock in rtems part of this is not the final patch.
zack_on_the_speed_chanel
zack_on_the_speed_chanel at protonmail.ch
Fri Jun 11 15:20:16 UTC 2021
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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Wednesday, June 9th, 2021 at 6:27 PM, zack <zakthertemsdev at outlook.com> wrote:
> From: zack zack_on_the_speed_chanel at protonmail.ch
>
> cpukit/include/rtems/posix/timer.h | 6 ++-
>
> cpukit/posix/src/psxtimercreate.c | 5 +-
>
> cpukit/posix/src/timergettime.c | 61 ++++++++++++++++++++---
>
> testsuites/psxtests/psxtimer02/psxtimer.c | 26 +++++++---
>
> 4 files changed, 81 insertions(+), 17 deletions(-)
>
> diff --git a/cpukit/include/rtems/posix/timer.h b/cpukit/include/rtems/posix/timer.h
>
> index bcbf07a65a..f8cf6115b2 100644
>
> --- a/cpukit/include/rtems/posix/timer.h
>
> +++ b/cpukit/include/rtems/posix/timer.h
>
> @@ -21,7 +21,7 @@
>
> #include <rtems/score/objectdata.h>
>
> #include <rtems/score/watchdog.h>
>
> +#include <time.h>
>
> #include <pthread.h>
>
> #ifdef __cplusplus
>
> @@ -47,7 +47,9 @@ typedef struct {
>
> struct itimerspec timer_data; /* Timing data of the timer /
>
> uint32_t ticks; / Number of ticks of the initialization /
>
> uint32_t overrun; / Number of expirations of the timer */
>
> - struct timespec time; /* Time at which the timer was started */
>
> - struct timespec time; /* Time at which the timer was started */
> - clockid_t clock_type;
>
> } POSIX_Timer_Control;
>
> /**
>
> diff --git a/cpukit/posix/src/psxtimercreate.c b/cpukit/posix/src/psxtimercreate.c
>
> index a63cf1d100..e78c359bd5 100644
>
> --- a/cpukit/posix/src/psxtimercreate.c
>
> +++ b/cpukit/posix/src/psxtimercreate.c
>
> @@ -40,7 +40,7 @@ int timer_create(
>
> {
>
> POSIX_Timer_Control *ptimer;
>
> - if ( clock_id != CLOCK_REALTIME )
>
> - if ( clock_id != CLOCK_REALTIME || clock_id != CLOCK_MONOTONIC )
>
> rtems_set_errno_and_return_minus_one( EINVAL );
>
> if ( !timerid )
>
> @@ -91,7 +91,8 @@ int timer_create(
>
> ptimer->timer_data.it_value.tv_nsec = 0;
>
> ptimer->timer_data.it_interval.tv_sec = 0;
>
> ptimer->timer_data.it_interval.tv_nsec = 0;
>
>
> - ptimer->clock_type=clock_id;
>
> - _Watchdog_Preinitialize( &ptimer->Timer, _Per_CPU_Get_snapshot() );
>
> _Watchdog_Initialize( &ptimer->Timer, _POSIX_Timer_TSR );
>
> _Objects_Open_u32(&_POSIX_Timer_Information, &ptimer->Object, 0);
>
>
> diff --git a/cpukit/posix/src/timergettime.c b/cpukit/posix/src/timergettime.c
>
> index ee2a566f0e..62011cde58 100644
>
> --- a/cpukit/posix/src/timergettime.c
>
> +++ b/cpukit/posix/src/timergettime.c
>
> @@ -28,6 +28,7 @@
>
> #include <rtems/score/todimpl.h>
>
> #include <rtems/score/watchdogimpl.h>
>
> #include <rtems/seterr.h>
>
> +#include <rtems/timespec.h>
>
> /*
>
> - - When a timer is initialized, the value of the time in
>
>
>
> @@ -43,21 +44,67 @@ int timer_gettime(
>
> {
>
> POSIX_Timer_Control *ptimer;
>
> ISR_lock_Context lock_context;
>
> - uint64_t now;
>
> uint32_t remaining;
>
> - Per_CPU_Control *cpu;
>
>
> - struct timespec * now; // get time now either with
>
>
> - struct timespec * expire; // expire
>
>
>
> - struct timespec * result;// get remaining time
>
>
>
> if ( !value )
>
> - rtems_set_errno_and_return_minus_one( EINVAL );
>
> - rtems_set_errno_and_return_minus_one( EINVAL );
>
> ptimer = _POSIX_Timer_Get( timerid, &lock_context );
>
> - if ( ptimer != NULL ) {
> - Per_CPU_Control *cpu;
>
> - if(ptimer== NULL ){
> - rtems_set_errno_and_return_minus_one( EINVAL );
> - }
>
> +if ( ptimer->clock_type ==CLOCK_REALTIME) {
>
> - cpu = _POSIX_Timer_Acquire_critical( ptimer, &lock_context );
>
>
> - _TOD_Get(now); // get current time
>
>
> - rtems_timespec_from_ticks (ptimer->Timer.expire,expire ); // get the time to expire
>
>
>
> - if (now->tv_nsec+now->tv_sec > expire->tv_nsec+expire->tv_sec) { // check if the time expired
>
>
> - rtems_timespec_subtract (now ,expire , result); //
>
>
>
> - remaining = (uint32_t) result->tv_nsec+result->tv_sec;
>
>
> - } else {
>
> - remaining = 0;
>
>
> - }
>
> - _Timespec_From_ticks( remaining, &value->it_value );
>
> - value->it_interval = ptimer->timer_data.it_interval;
>
>
> - _POSIX_Timer_Release( cpu, &lock_context );
>
> - return 0;
>
> - }
>
>
> +if ( ptimer->clock_type ==CLOCK_MONOTONIC) {
>
> - cpu = _POSIX_Timer_Acquire_critical( ptimer, &lock_context );
>
> - now = cpu->Watchdog.ticks;
>
> - _Timecounter_Nanouptime(now );
>
>
> - rtems_timespec_from_ticks (ptimer->Timer.expire,expire );
>
>
>
> - if (now->tv_nsec+now->tv_sec > expire->tv_nsec+expire->tv_sec) {
>
>
> - rtems_timespec_subtract (now, expire, result);
>
>
>
> - if ( now < ptimer->Timer.expire ) {
>
> - remaining = (uint32_t) ( ptimer->Timer.expire - now );
>
>
>
> - remaining = (uint32_t) result->tv_nsec+result->tv_sec;
>
>
> } else {
>
> remaining = 0;
>
> }
>
> diff --git a/testsuites/psxtests/psxtimer02/psxtimer.c b/testsuites/psxtests/psxtimer02/psxtimer.c
>
> index 9f79d33c42..029e638c76 100644
>
> --- a/testsuites/psxtests/psxtimer02/psxtimer.c
>
> +++ b/testsuites/psxtests/psxtimer02/psxtimer.c
>
> @@ -59,17 +59,31 @@ void *POSIX_Init (
>
> fatal_posix_service_status_errno( status, EINVAL, "bad clock id" );
>
> puts( "timer_create - bad timer id pointer - EINVAL" );
>
>
> - status = timer_create( CLOCK_REALTIME, &event, NULL );
>
> - status = timer_create( CLOCK_MONOTONIC, &event, NULL );
>
> fatal_posix_service_status_errno( status, EINVAL, "bad timer id" );
>
> puts( "timer_create - OK" );
>
> - status = timer_create( CLOCK_REALTIME, NULL, &timer );
>
> - status = timer_create( CLOCK_MONOTONIC, NULL, &timer );
>
> posix_service_failed( status, "timer_create OK" );
>
> puts( "timer_create - too many - EAGAIN" );
>
> - status = timer_create( CLOCK_REALTIME, NULL, &timer1 );
>
> - status = timer_create( CLOCK_MONOTONIC, NULL, &timer1 );
>
> fatal_posix_service_status_errno( status, EAGAIN, "too many" );
>
> - puts( "timer_create (monotonic) - bad timer id pointer - EINVAL" );
> - status = timer_create( CLOCK_MONOTONIC, &event, NULL );
> - fatal_posix_service_status_errno( status, EINVAL, "bad timer id" );
>
> - puts( "timer_create (Monotonic) - OK" );
> - status = timer_create( CLOCK_MONOTONIC, NULL, &timer );
> - posix_service_failed( status, "timer_create OK" );
>
> - puts( "timer_create (monotonic)- too many - EAGAIN" );
> - status = timer_create( CLOCK_MONOTONIC, NULL, &timer1 );
> - fatal_posix_service_status_errno( status, EAGAIN, "too many" );
>
> - puts( "timer_delete - bad id - EINVAL" );
>
> status = timer_delete( timer1 + 1 );
>
> fatal_posix_service_status_errno( status, EINVAL, "bad id" );
>
> @@ -100,14 +114,14 @@ void *POSIX_Init (
>
> status = timer_settime( timer, TIMER_ABSTIME, &itimer, NULL );
>
> fatal_posix_service_status_errno( status, EINVAL, "bad itimer value #2" );
>
> - clock_gettime( CLOCK_REALTIME, &now );
>
> - clock_gettime( CLOCK_MONOTONIC, &now );
>
> itimer.it_value = now;
>
> itimer.it_value.tv_sec = itimer.it_value.tv_sec - 1;
>
> puts( "timer_settime - bad itimer value - previous time - EINVAL" );
>
> status = timer_settime( timer, TIMER_ABSTIME, &itimer, NULL );
>
> fatal_posix_service_status_errno( status, EINVAL, "bad itimer value #3" );
>
> - clock_gettime( CLOCK_REALTIME, &now );
>
> - clock_gettime( CLOCK_MONOTONIC, &now );
>
> itimer.it_value = now;
>
> itimer.it_value.tv_sec = itimer.it_value.tv_sec + 1;
>
> puts( "timer_settime - bad id - EINVAL" );
>
> @@ -129,4 +143,4 @@ void *POSIX_Init (
>
> TEST_END();
>
> rtems_test_exit (0);
>
> -}
>
> +}
>
> \ No newline at end of file
>
> --
>
> 2.31.1
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