source: rtems/cpukit/score/include/rtems/score/states.h @ 0edf263

4.115
Last change on this file since 0edf263 was 0edf263, checked in by Sebastian Huber <sebastian.huber@…>, on 10/26/12 at 08:05:07

rtems: Add system events

System events are similar to normal events. They offer a second set of
events. These events are intended for internal RTEMS use and should not
be used by applications (with the exception of the transient system
event).

  • Property mode set to 100644
File size: 5.3 KB
Line 
1/**
2 *  @file  rtems/score/states.h
3 *
4 *  This include file contains thread execution state information.
5 */
6
7/*
8 *  COPYRIGHT (c) 1989-2006.
9 *  On-Line Applications Research Corporation (OAR).
10 *
11 *  The license and distribution terms for this file may be
12 *  found in the file LICENSE in this distribution or at
13 *  http://www.rtems.com/license/LICENSE.
14 */
15
16#ifndef _RTEMS_SCORE_STATES_H
17#define _RTEMS_SCORE_STATES_H
18
19/**
20 *  @defgroup ScoreStates Thread States Handler
21 *
22 *  @ingroup Score
23 *
24 *  This handler encapsulates functionality which relates to the management of
25 *  the state bitmap associated with each thread.
26 */
27/**@{*/
28
29#ifdef __cplusplus
30extern "C" {
31#endif
32
33/**
34 *  The following type defines the control block used to manage a
35 *  thread's state.
36 */
37typedef uint32_t   States_Control;
38
39/*
40 *  The following constants define the individual states which may be
41 *  be used to compose and manipulate a thread's state.
42 */
43
44/** This macro corresponds to all states being set. */
45#define STATES_ALL_SET                         0xfffff
46/** This macro corresponds to a task being ready. */
47#define STATES_READY                           0x00000
48/** This macro corresponds to a task being created but not yet started. */
49#define STATES_DORMANT                         0x00001
50/** This macro corresponds to a task being suspended. */
51#define STATES_SUSPENDED                       0x00002
52/** This macro corresponds to a task being in an internal state transition. */
53#define STATES_TRANSIENT                       0x00004
54/** This macro corresponds to a task which is waiting for a timeout. */
55#define STATES_DELAYING                        0x00008
56/** This macro corresponds to a task waiting until a specific TOD. */
57#define STATES_WAITING_FOR_TIME                0x00010
58/** This macro corresponds to a task waiting for a variable length buffer. */
59#define STATES_WAITING_FOR_BUFFER              0x00020
60/** This macro corresponds to a task waiting for a fixed size segment. */
61#define STATES_WAITING_FOR_SEGMENT             0x00040
62/** This macro corresponds to a task waiting for a message. */
63#define STATES_WAITING_FOR_MESSAGE             0x00080
64/** This macro corresponds to a task waiting for an event. */
65#define STATES_WAITING_FOR_EVENT               0x00100
66/** This macro corresponds to a task waiting for a semaphore. */
67#define STATES_WAITING_FOR_SEMAPHORE           0x00200
68/** This macro corresponds to a task waiting for a mutex. */
69#define STATES_WAITING_FOR_MUTEX               0x00400
70/** This macro corresponds to a task waiting for a condition variable. */
71#define STATES_WAITING_FOR_CONDITION_VARIABLE  0x00800
72/** This macro corresponds to a task waiting for a join while exiting. */
73#define STATES_WAITING_FOR_JOIN_AT_EXIT        0x01000
74/** This macro corresponds to a task waiting for a reply to an MPCI request. */
75#define STATES_WAITING_FOR_RPC_REPLY           0x02000
76/** This macro corresponds to a task waiting for a period. */
77#define STATES_WAITING_FOR_PERIOD              0x04000
78/** This macro corresponds to a task waiting for a signal. */
79#define STATES_WAITING_FOR_SIGNAL              0x08000
80/** This macro corresponds to a task waiting for a barrier. */
81#define STATES_WAITING_FOR_BARRIER             0x10000
82/** This macro corresponds to a task waiting for a RWLock. */
83#define STATES_WAITING_FOR_RWLOCK              0x20000
84/** This macro corresponds to a task waiting for a system event. */
85#define STATES_WAITING_FOR_SYSTEM_EVENT        0x40000
86
87/** This macro corresponds to a task which is in an interruptible
88 *  blocking state.
89 */
90#define STATES_INTERRUPTIBLE_BY_SIGNAL         0x10000000
91
92/** This macro corresponds to a task waiting for a local object operation. */
93#define STATES_LOCALLY_BLOCKED ( STATES_WAITING_FOR_BUFFER             | \
94                                 STATES_WAITING_FOR_SEGMENT            | \
95                                 STATES_WAITING_FOR_MESSAGE            | \
96                                 STATES_WAITING_FOR_SEMAPHORE          | \
97                                 STATES_WAITING_FOR_MUTEX              | \
98                                 STATES_WAITING_FOR_CONDITION_VARIABLE | \
99                                 STATES_WAITING_FOR_JOIN_AT_EXIT       | \
100                                 STATES_WAITING_FOR_SIGNAL             | \
101                                 STATES_WAITING_FOR_BARRIER            | \
102                                 STATES_WAITING_FOR_RWLOCK             )
103
104/** This macro corresponds to a task waiting which is blocked on
105 *  a thread queue. */
106#define STATES_WAITING_ON_THREAD_QUEUE \
107                               ( STATES_LOCALLY_BLOCKED         | \
108                                 STATES_WAITING_FOR_RPC_REPLY   )
109
110/** This macro corresponds to a task waiting which is blocked. */
111#define STATES_BLOCKED         ( STATES_DELAYING                | \
112                                 STATES_WAITING_FOR_TIME        | \
113                                 STATES_WAITING_FOR_PERIOD      | \
114                                 STATES_WAITING_FOR_EVENT       | \
115                                 STATES_WAITING_FOR_SYSTEM_EVENT | \
116                                 STATES_WAITING_ON_THREAD_QUEUE | \
117                                 STATES_INTERRUPTIBLE_BY_SIGNAL )
118
119#ifndef __RTEMS_APPLICATION__
120#include <rtems/score/states.inl>
121#endif
122
123#ifdef __cplusplus
124}
125#endif
126
127/**@}*/
128
129#endif
130/* end of include file */
Note: See TracBrowser for help on using the repository browser.