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Diffstat (limited to 'cpukit/score/include/rtems/score/states.h')
| -rw-r--r-- | cpukit/score/include/rtems/score/states.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/cpukit/score/include/rtems/score/states.h b/cpukit/score/include/rtems/score/states.h new file mode 100644 index 0000000000..fc56924d8a --- /dev/null +++ b/cpukit/score/include/rtems/score/states.h @@ -0,0 +1,127 @@ +/** + * @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. + * + * $Id$ + */ + +#ifndef _RTEMS_SCORE_STATES_H +#define _RTEMS_SCORE_STATES_H + +/** + * @defgroup ScoreStates Thread States Handler + * + * 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 */ |