diff options
Diffstat (limited to 'cpukit/posix')
| -rw-r--r-- | cpukit/posix/src/clocknanosleep.c | 116 | ||||
| -rw-r--r-- | cpukit/posix/src/nanosleep.c | 91 |
2 files changed, 116 insertions, 91 deletions
diff --git a/cpukit/posix/src/clocknanosleep.c b/cpukit/posix/src/clocknanosleep.c new file mode 100644 index 0000000000..73b7d9c6a1 --- /dev/null +++ b/cpukit/posix/src/clocknanosleep.c @@ -0,0 +1,116 @@ +/** + * @file + * + * @ingroup POSIXAPI + * + * @brief Suspends Execution of calling thread until Time elapses + */ + +/* + * COPYRIGHT (c) 1989-2015. + * On-Line Applications Research Corporation (OAR). + * + * Copyright (c) 2016. Gedare Bloom. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <time.h> + +#include <rtems/score/threadimpl.h> +#include <rtems/score/threadqimpl.h> +#include <rtems/score/timespec.h> +#include <rtems/score/timecounter.h> +#include <rtems/score/watchdogimpl.h> +#include <rtems/posix/posixapi.h> + +static Thread_queue_Control _Nanosleep_Pseudo_queue = + THREAD_QUEUE_INITIALIZER( "Nanosleep" ); + +/* + * High Resolution Sleep with Specifiable Clock, IEEE Std 1003.1, 2001 + */ +int clock_nanosleep( + clockid_t clock_id, + int flags, + const struct timespec *rqtp, + struct timespec *rmtp +) +{ + Thread_queue_Context queue_context; + struct timespec uptime; + const struct timespec *end; + Thread_Control *executing; + int eno; + + if ( clock_id != CLOCK_REALTIME && clock_id != CLOCK_MONOTONIC ) { + return ENOTSUP; + } + + _Thread_queue_Context_initialize( &queue_context ); + _Thread_queue_Context_set_thread_state( + &queue_context, + STATES_WAITING_FOR_TIME | STATES_INTERRUPTIBLE_BY_SIGNAL + ); + + if ( ( flags & TIMER_ABSTIME ) != 0 ) { + end = rqtp; + + if ( clock_id == CLOCK_REALTIME ) { + _Thread_queue_Context_set_enqueue_timeout_realtime_timespec( + &queue_context, + end + ); + } else { + _Thread_queue_Context_set_enqueue_timeout_monotonic_timespec( + &queue_context, + end + ); + } + } else { + _Timecounter_Nanouptime( &uptime ); + end = _Watchdog_Future_timespec( &uptime, rqtp ); + _Thread_queue_Context_set_enqueue_timeout_monotonic_timespec( + &queue_context, + end + ); + } + + _Thread_queue_Acquire( &_Nanosleep_Pseudo_queue, &queue_context ); + executing = _Thread_Executing; + _Thread_queue_Enqueue( + &_Nanosleep_Pseudo_queue.Queue, + &_Thread_queue_Operations_FIFO, + executing, + &queue_context + ); + eno = _POSIX_Get_error_after_wait( executing ); + + if ( eno == ETIMEDOUT ) { + eno = 0; + } + + if ( rmtp != NULL && ( flags & TIMER_ABSTIME ) == 0 ) { + if ( eno == EINTR ) { + struct timespec actual_end; + + _Timecounter_Nanouptime( &actual_end ); + + if ( _Timespec_Less_than( &actual_end, end ) ) { + _Timespec_Subtract( &actual_end, end, rmtp ); + } else { + _Timespec_Set_to_zero( rmtp ); + } + } else { + _Timespec_Set_to_zero( rmtp ); + } + } + + return eno; +} diff --git a/cpukit/posix/src/nanosleep.c b/cpukit/posix/src/nanosleep.c index 8d1a4b84e4..167dcbc787 100644 --- a/cpukit/posix/src/nanosleep.c +++ b/cpukit/posix/src/nanosleep.c @@ -23,17 +23,8 @@ #include <time.h> -#include <rtems/score/threadimpl.h> -#include <rtems/score/threadqimpl.h> -#include <rtems/score/timespec.h> -#include <rtems/score/timecounter.h> -#include <rtems/score/watchdogimpl.h> -#include <rtems/posix/posixapi.h> #include <rtems/seterr.h> -static Thread_queue_Control _Nanosleep_Pseudo_queue = - THREAD_QUEUE_INITIALIZER( "Nanosleep" ); - /* * 14.2.5 High Resolution Sleep, P1003.1b-1993, p. 269 */ @@ -52,85 +43,3 @@ int nanosleep( return eno; } - -/* - * High Resolution Sleep with Specifiable Clock, IEEE Std 1003.1, 2001 - */ -int clock_nanosleep( - clockid_t clock_id, - int flags, - const struct timespec *rqtp, - struct timespec *rmtp -) -{ - Thread_queue_Context queue_context; - struct timespec uptime; - const struct timespec *end; - Thread_Control *executing; - int eno; - - if ( clock_id != CLOCK_REALTIME && clock_id != CLOCK_MONOTONIC ) { - return ENOTSUP; - } - - _Thread_queue_Context_initialize( &queue_context ); - _Thread_queue_Context_set_thread_state( - &queue_context, - STATES_WAITING_FOR_TIME | STATES_INTERRUPTIBLE_BY_SIGNAL - ); - - if ( ( flags & TIMER_ABSTIME ) != 0 ) { - end = rqtp; - - if ( clock_id == CLOCK_REALTIME ) { - _Thread_queue_Context_set_enqueue_timeout_realtime_timespec( - &queue_context, - end - ); - } else { - _Thread_queue_Context_set_enqueue_timeout_monotonic_timespec( - &queue_context, - end - ); - } - } else { - _Timecounter_Nanouptime( &uptime ); - end = _Watchdog_Future_timespec( &uptime, rqtp ); - _Thread_queue_Context_set_enqueue_timeout_monotonic_timespec( - &queue_context, - end - ); - } - - _Thread_queue_Acquire( &_Nanosleep_Pseudo_queue, &queue_context ); - executing = _Thread_Executing; - _Thread_queue_Enqueue( - &_Nanosleep_Pseudo_queue.Queue, - &_Thread_queue_Operations_FIFO, - executing, - &queue_context - ); - eno = _POSIX_Get_error_after_wait( executing ); - - if ( eno == ETIMEDOUT ) { - eno = 0; - } - - if ( rmtp != NULL && ( flags & TIMER_ABSTIME ) == 0 ) { - if ( eno == EINTR ) { - struct timespec actual_end; - - _Timecounter_Nanouptime( &actual_end ); - - if ( _Timespec_Less_than( &actual_end, end ) ) { - _Timespec_Subtract( &actual_end, end, rmtp ); - } else { - _Timespec_Set_to_zero( rmtp ); - } - } else { - _Timespec_Set_to_zero( rmtp ); - } - } - - return eno; -} |