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comparison packages/kernel/current/include/ktypes.h @ 0:3111d98ba7b3 ecos-v1_1-release

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Initial commit of eCos version 1.1
author jlarmour
date Tue, 11 May 1999 11:16:07 +0000
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children 443894e2e912
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-1:000000000000 0:3111d98ba7b3
1 #ifndef CYGONCE_KERNEL_KTYPES_H
2 #define CYGONCE_KERNEL_KTYPES_H
3
4 //==========================================================================
5 //
6 // ktypes.h
7 //
8 // Standard types used in the kernel and its interfaces
9 //
10 //==========================================================================
11 //####COPYRIGHTBEGIN####
12 //
13 // -------------------------------------------
14 // The contents of this file are subject to the Cygnus eCos Public License
15 // Version 1.0 (the "License"); you may not use this file except in
16 // compliance with the License. You may obtain a copy of the License at
17 // http://sourceware.cygnus.com/ecos
18 //
19 // Software distributed under the License is distributed on an "AS IS"
20 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
21 // License for the specific language governing rights and limitations under
22 // the License.
23 //
24 // The Original Code is eCos - Embedded Cygnus Operating System, released
25 // September 30, 1998.
26 //
27 // The Initial Developer of the Original Code is Cygnus. Portions created
28 // by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved.
29 // -------------------------------------------
30 //
31 //####COPYRIGHTEND####
32 //==========================================================================
33 //#####DESCRIPTIONBEGIN####
34 //
35 // Author(s): nickg from an original by hmt
36 // Contributors: nickg
37 // Date: 1997-09-08
38 // Purpose: Define kernel specific types
39 // Description: Kernel specific types
40 // Usage: #include <cyg/kernel/ktypes.h>
41 // ...
42 // cyg_priority priority; // etc
43 //
44 //####DESCRIPTIONEND####
45 //
46 //==========================================================================
47
48 // -------------------------------------------------------------------------
49 // Check that a configuration file is present.
50
51 #ifndef CYGONCE_PKGCONF_KERNEL_H
52 #error "No Configuration file included"
53 #endif
54
55 // -------------------------------------------------------------------------
56
57 #include <cyg/infra/cyg_type.h>
58 #include <stddef.h> // for size_t
59
60 // -------------------------------------------------------------------------
61 // Integer types:
62
63 typedef cyg_int32 cyg_code; // General return/error/status code
64
65 typedef cyg_count32 cyg_priority; // priority value
66
67 typedef cyg_uint32 cyg_vector; // vector number/descriptor
68
69 typedef cyg_uint64 cyg_tick_count; // clock tick count value
70
71 // -------------------------------------------------------------------------
72 // Predefinitions of various kernel classes
73
74 #ifdef __cplusplus
75
76 class Cyg_Scheduler;
77 class Cyg_Scheduler_Implementation;
78
79 class Cyg_HardwareThread;
80 class Cyg_SchedThread;
81 class Cyg_SchedThread_Implementation;
82 class Cyg_Thread;
83
84 class Cyg_ThreadQueue;
85 class Cyg_ThreadQueue_Implementation;
86
87 #endif
88
89
90 // -------------------------------------------------------------------------
91 // Class and structure conversion macros.
92 // CYG_CLASSFROMFIELD translates a pointer to a field of a struct or
93 // class into a pointer to the class.
94 // CYG_OFFSETOFBASE yields the offset of a base class of a derived
95 // class.
96 // CYG_CLASSFROMBASE translates a pointer to a base class into a pointer
97 // to a selected derived class. The base class object _must_ be part of
98 // the specified derived class. This is essentially a poor mans version
99 // of the RTTI dynamic_cast operator.
100 // Caveat: These macros do not work for virtual base classes.
101
102 #define CYG_CLASSFROMFIELD(_type_,_member_,_ptr_)\
103 ((_type_ *)((char *)(_ptr_)-((char *)&(((_type_ *)0)->_member_))))
104
105 #ifdef __cplusplus
106
107 #define CYG_OFFSETOFBASE(_type_,_base_)\
108 ((char *)((_base_ *)((_type_ *)4)) - (char *)4)
109
110 # define CYG_CLASSFROMBASE(_class_,_base_,_ptr_)\
111 ((_class_ *)((char *)(_ptr_) - CYG_OFFSETOFBASE(_class_,_base_)))
112
113 #endif
114
115 // -------------------------------------------------------------------------
116 #endif // CYGONCE_KERNEL_KTYPES_H
117 // EOF ktypes.h
118