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Diffstat (limited to 'include/rtems/posix/condimpl.h')
-rw-r--r-- | include/rtems/posix/condimpl.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/include/rtems/posix/condimpl.h b/include/rtems/posix/condimpl.h new file mode 100644 index 0000000000..7def0f852a --- /dev/null +++ b/include/rtems/posix/condimpl.h @@ -0,0 +1,128 @@ +/** + * @file + * + * This include file contains the static inline implementation of the private + * inlined routines for POSIX condition variables. + */ + +/* + * COPYRIGHT (c) 1989-2013. + * 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_CONDIMPL_H +#define _RTEMS_POSIX_CONDIMPL_H + +#include <rtems/posix/cond.h> +#include <rtems/score/objectimpl.h> +#include <rtems/score/threadqimpl.h> +#include <rtems/score/watchdog.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * Constant to indicate condition variable does not currently have + * a mutex assigned to it. + */ +#define POSIX_CONDITION_VARIABLES_NO_MUTEX 0 + +/** + * The following defines the information control block used to manage + * this class of objects. + */ +POSIX_EXTERN Objects_Information _POSIX_Condition_variables_Information; + +/** + * The default condition variable attributes structure. + */ +extern const pthread_condattr_t _POSIX_Condition_variables_Default_attributes; + +/** + * @brief POSIX Condition Variable Manager Initialization + * + * This routine performs the initialization necessary for this manager. + */ +void _POSIX_Condition_variables_Manager_initialization(void); + +/** + * @brief POSIX Condition Variable Allocate + * + * This function allocates a condition variable control block from + * the inactive chain of free condition variable control blocks. + */ +RTEMS_INLINE_ROUTINE POSIX_Condition_variables_Control * + _POSIX_Condition_variables_Allocate( void ) +{ + return (POSIX_Condition_variables_Control *) + _Objects_Allocate( &_POSIX_Condition_variables_Information ); +} + +/** + * @brief POSIX Condition Variable Free + * + * This routine frees a condition variable control block to the + * inactive chain of free condition variable control blocks. + */ +RTEMS_INLINE_ROUTINE void _POSIX_Condition_variables_Free ( + POSIX_Condition_variables_Control *the_condition_variable +) +{ + _Thread_queue_Destroy( &the_condition_variable->Wait_queue ); + _Objects_Free( + &_POSIX_Condition_variables_Information, + &the_condition_variable->Object + ); +} + +/** + * @brief POSIX Condition Variable Get + * + * This function maps condition variable IDs to condition variable control + * blocks. If ID corresponds to a local condition variable, then it returns + * the_condition variable control pointer which maps to ID and location + * is set to OBJECTS_LOCAL. if the condition variable ID is global and + * resides on a remote node, then location is set to OBJECTS_REMOTE, + * and the_condition variable is undefined. Otherwise, location is set + * to OBJECTS_ERROR and the_condition variable is undefined. + */ +POSIX_Condition_variables_Control *_POSIX_Condition_variables_Get ( + pthread_cond_t *cond, + Objects_Locations *location +); + +/** + * @brief Implements wake up version of the "signal" operation. + * + * A support routine which implements guts of the broadcast and single task + * wake up version of the "signal" operation. + */ +int _POSIX_Condition_variables_Signal_support( + pthread_cond_t *cond, + bool is_broadcast +); + +/** + * @brief POSIX condition variables wait support. + * + * A support routine which implements guts of the blocking, non-blocking, and + * timed wait version of condition variable wait routines. + */ +int _POSIX_Condition_variables_Wait_support( + pthread_cond_t *cond, + pthread_mutex_t *mutex, + Watchdog_Interval timeout, + bool already_timedout +); + +#ifdef __cplusplus +} +#endif + +#endif +/* end of include file */ |