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/**
* @file rtems/score/states.h
*
* This include file contains thread execution state information.
*/
/*
* COPYRIGHT (c) 1989-2006.
* 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.com/license/LICENSE.
*/
#ifndef _RTEMS_SCORE_STATES_H
#define _RTEMS_SCORE_STATES_H
/**
* @defgroup ScoreStates Thread States Handler
*
* @ingroup Score
*
* This handler encapsulates functionality which relates to the management of
* the state bitmap associated with each thread.
*/
/**@{*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* The following type defines the control block used to manage a
* thread's state.
*/
typedef uint32_t States_Control;
/*
* The following constants define the individual states which may be
* be used to compose and manipulate a thread's state.
*/
/** This macro corresponds to all states being set. */
#define STATES_ALL_SET 0xfffff
/** This macro corresponds to a task being ready. */
#define STATES_READY 0x00000
/** This macro corresponds to a task being created but not yet started. */
#define STATES_DORMANT 0x00001
/** This macro corresponds to a task being suspended. */
#define STATES_SUSPENDED 0x00002
/** This macro corresponds to a task being in an internal state transition. */
#define STATES_TRANSIENT 0x00004
/** This macro corresponds to a task which is waiting for a timeout. */
#define STATES_DELAYING 0x00008
/** This macro corresponds to a task waiting until a specific TOD. */
#define STATES_WAITING_FOR_TIME 0x00010
/** This macro corresponds to a task waiting for a variable length buffer. */
#define STATES_WAITING_FOR_BUFFER 0x00020
/** This macro corresponds to a task waiting for a fixed size segment. */
#define STATES_WAITING_FOR_SEGMENT 0x00040
/** This macro corresponds to a task waiting for a message. */
#define STATES_WAITING_FOR_MESSAGE 0x00080
/** This macro corresponds to a task waiting for an event. */
#define STATES_WAITING_FOR_EVENT 0x00100
/** This macro corresponds to a task waiting for a semaphore. */
#define STATES_WAITING_FOR_SEMAPHORE 0x00200
/** This macro corresponds to a task waiting for a mutex. */
#define STATES_WAITING_FOR_MUTEX 0x00400
/** This macro corresponds to a task waiting for a condition variable. */
#define STATES_WAITING_FOR_CONDITION_VARIABLE 0x00800
/** This macro corresponds to a task waiting for a join while exiting. */
#define STATES_WAITING_FOR_JOIN_AT_EXIT 0x01000
/** This macro corresponds to a task waiting for a reply to an MPCI request. */
#define STATES_WAITING_FOR_RPC_REPLY 0x02000
/** This macro corresponds to a task waiting for a period. */
#define STATES_WAITING_FOR_PERIOD 0x04000
/** This macro corresponds to a task waiting for a signal. */
#define STATES_WAITING_FOR_SIGNAL 0x08000
/** This macro corresponds to a task waiting for a barrier. */
#define STATES_WAITING_FOR_BARRIER 0x10000
/** This macro corresponds to a task waiting for a RWLock. */
#define STATES_WAITING_FOR_RWLOCK 0x20000
/** This macro corresponds to a task which is in an interruptible
* blocking state.
*/
#define STATES_INTERRUPTIBLE_BY_SIGNAL 0x10000000
/** This macro corresponds to a task waiting for a local object operation. */
#define STATES_LOCALLY_BLOCKED ( STATES_WAITING_FOR_BUFFER | \
STATES_WAITING_FOR_SEGMENT | \
STATES_WAITING_FOR_MESSAGE | \
STATES_WAITING_FOR_SEMAPHORE | \
STATES_WAITING_FOR_MUTEX | \
STATES_WAITING_FOR_CONDITION_VARIABLE | \
STATES_WAITING_FOR_JOIN_AT_EXIT | \
STATES_WAITING_FOR_SIGNAL | \
STATES_WAITING_FOR_BARRIER | \
STATES_WAITING_FOR_RWLOCK )
/** This macro corresponds to a task waiting which is blocked on
* a thread queue. */
#define STATES_WAITING_ON_THREAD_QUEUE \
( STATES_LOCALLY_BLOCKED | \
STATES_WAITING_FOR_RPC_REPLY )
/** This macro corresponds to a task waiting which is blocked. */
#define STATES_BLOCKED ( STATES_DELAYING | \
STATES_WAITING_FOR_TIME | \
STATES_WAITING_FOR_PERIOD | \
STATES_WAITING_FOR_EVENT | \
STATES_WAITING_ON_THREAD_QUEUE | \
STATES_INTERRUPTIBLE_BY_SIGNAL )
#ifndef __RTEMS_APPLICATION__
#include <rtems/score/states.inl>
#endif
#ifdef __cplusplus
}
#endif
/**@}*/
#endif
/* end of include file */
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