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Diffstat (limited to 'cpukit/include/rtems/posix/pthreadimpl.h')
-rw-r--r-- | cpukit/include/rtems/posix/pthreadimpl.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/cpukit/include/rtems/posix/pthreadimpl.h b/cpukit/include/rtems/posix/pthreadimpl.h new file mode 100644 index 0000000000..3e2351e57e --- /dev/null +++ b/cpukit/include/rtems/posix/pthreadimpl.h @@ -0,0 +1,129 @@ +/** + * @file + * + * @brief POSIX Threads Private Support + * + * This include file contains all the private support information for + * POSIX threads. + */ + +/* + * COPYRIGHT (c) 1989-2011. + * 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.org/license/LICENSE. + */ + +#ifndef _RTEMS_POSIX_PTHREADIMPL_H +#define _RTEMS_POSIX_PTHREADIMPL_H + +#include <rtems/posix/pthread.h> +#include <rtems/posix/config.h> +#include <rtems/posix/threadsup.h> +#include <rtems/score/assert.h> +#include <rtems/score/objectimpl.h> +#include <rtems/score/timespec.h> +#include <rtems/score/threadimpl.h> +#include <rtems/score/watchdogimpl.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @addtogroup POSIX_PTHREAD + */ +/**@{**/ + +/** + * The following sets the minimum stack size for POSIX threads. + */ +#define PTHREAD_MINIMUM_STACK_SIZE (_Stack_Minimum() * 2) + +/** + * The following defines the information control block used to manage + * this class of objects. + */ +extern Thread_Information _POSIX_Threads_Information; + +RTEMS_INLINE_ROUTINE void _POSIX_Threads_Sporadic_timer_insert( + Thread_Control *the_thread, + POSIX_API_Control *api +) +{ + the_thread->cpu_time_budget = + _Timespec_To_ticks( &api->Sporadic.sched_ss_init_budget ); + + _Watchdog_Per_CPU_insert_ticks( + &api->Sporadic.Timer, + _Per_CPU_Get(), + _Timespec_To_ticks( &api->Sporadic.sched_ss_repl_period ) + ); +} + +void _POSIX_Threads_Sporadic_timer( Watchdog_Control *watchdog ); + +/** + * @brief POSIX threads sporadic budget callout. + * + * This routine handles the sporadic scheduling algorithm. + * + * @param[in] the_thread is a pointer to the thread whose budget + * has been exceeded. + */ +void _POSIX_Threads_Sporadic_budget_callout( + Thread_Control *the_thread +); + +int _POSIX_Thread_Translate_to_sched_policy( + Thread_CPU_budget_algorithms budget_algorithm +); + +/** + * @brief Translate sched_param into SuperCore terms. + * + * This method translates the POSIX API sched_param into the corresponding + * SuperCore settings. + * + * @param[in] policy is the POSIX scheduling policy + * @param[in] param points to the scheduling parameter structure + * @param[in] budget_algorithm points to the output CPU Budget algorithm + * @param[in] budget_callout points to the output CPU Callout + * + * @retval 0 Indicates success. + * @retval error_code POSIX error code indicating failure. + */ +int _POSIX_Thread_Translate_sched_param( + int policy, + struct sched_param *param, + Thread_CPU_budget_algorithms *budget_algorithm, + Thread_CPU_budget_algorithm_callout *budget_callout +); + +RTEMS_INLINE_ROUTINE Thread_Control *_POSIX_Threads_Allocate(void) +{ + _Objects_Allocator_lock(); + + _Thread_Kill_zombies(); + + return (Thread_Control *) + _Objects_Allocate_unprotected( &_POSIX_Threads_Information.Objects ); +} + +RTEMS_INLINE_ROUTINE void _POSIX_Threads_Free ( + Thread_Control *the_pthread +) +{ + _Objects_Free( &_POSIX_Threads_Information.Objects, &the_pthread->Object ); +} + +/** @} */ + +#ifdef __cplusplus +} +#endif + +#endif +/* end of include file */ |