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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1995-05-11 17:39:37 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1995-05-11 17:39:37 +0000 |
commit | ac7d5ef06a6d6e8d84abbd1f0b82162725f98326 (patch) | |
tree | 9304cf759a73f2a1c6fd3191948f00e870af3787 /c/src/exec/score/include/rtems/score/tqdata.h | |
download | rtems-ac7d5ef06a6d6e8d84abbd1f0b82162725f98326.tar.bz2 |
Initial revision
Diffstat (limited to 'c/src/exec/score/include/rtems/score/tqdata.h')
-rw-r--r-- | c/src/exec/score/include/rtems/score/tqdata.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/c/src/exec/score/include/rtems/score/tqdata.h b/c/src/exec/score/include/rtems/score/tqdata.h new file mode 100644 index 0000000000..8c43fa4c72 --- /dev/null +++ b/c/src/exec/score/include/rtems/score/tqdata.h @@ -0,0 +1,90 @@ +/* tqdata.h + * + * This include file contains all the constants and structures + * needed to declare a thread queue. + * + * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. + * On-Line Applications Research Corporation (OAR). + * All rights assigned to U.S. Government, 1994. + * + * This material may be reproduced by or for the U.S. Government pursuant + * to the copyright license under the clause at DFARS 252.227-7013. This + * notice must appear in all copies of this file and its derivatives. + * + * $Id$ + */ + +#ifndef __RTEMS_THREAD_QUEUE_DATA_h +#define __RTEMS_THREAD_QUEUE_DATA_h + +#ifdef __cplusplus +extern "C" { +#endif + +#include <rtems/chain.h> +#include <rtems/priority.h> +#include <rtems/states.h> + +/* + * The following enumerated type details all of the disciplines + * supported by the Thread Queue Handler. + */ + +typedef enum { + THREAD_QUEUE_DATA_FIFO_DISCIPLINE, /* RTEMS_FIFO queue discipline */ + THREAD_QUEUE_DATA_PRIORITY_DISCIPLINE, /* RTEMS_PRIORITY queue discipline */ +} Thread_queue_Disciplines; + +/* + * The following record defines the control block used + * to manage each thread. + */ + +#define TASK_QUEUE_DATA_NUMBER_OF_PRIORITY_HEADERS 4 /* # of pri groups */ + +typedef struct { + union { + Chain_Control Fifo; /* FIFO discipline list */ + Chain_Control Priority[TASK_QUEUE_DATA_NUMBER_OF_PRIORITY_HEADERS]; + /* priority discipline list */ + } Queues; + boolean sync; /* alloc/dealloc critical section */ + Thread_queue_Disciplines discipline; /* queue discipline */ + States_Control state; /* state of threads on Thread_q */ +} Thread_queue_Control; + +/* + * _Thread_queue_Header_number + * + * DESCRIPTION: + * + * This function returns the index of the priority chain on which + * a thread of the_priority should be placed. + */ + +STATIC INLINE unsigned32 _Thread_queue_Header_number ( + rtems_task_priority the_priority +); + +/* + * _Thread_queue_Is_reverse_search + * + * DESCRIPTION: + * + * This function returns TRUE if the_priority indicates that the + * enqueue search should start at the front of this priority + * group chain, and FALSE if the search should start at the rear. + */ + +STATIC INLINE boolean _Thread_queue_Is_reverse_search ( + rtems_task_priority the_priority +); + +#include <rtems/tqdata.inl> + +#ifdef __cplusplus +} +#endif + +#endif +/* end of include file */ |