1 #ifndef CYGONCE_KERNEL_KTYPES_H
2 #define CYGONCE_KERNEL_KTYPES_H
4 //==========================================================================
8 // Standard types used in the kernel and its interfaces
10 //==========================================================================
11 //####ECOSGPLCOPYRIGHTBEGIN####
12 // -------------------------------------------
13 // This file is part of eCos, the Embedded Configurable Operating System.
14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
16 // eCos is free software; you can redistribute it and/or modify it under
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22 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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27 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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30 // or inline functions from this file, or you compile this file and link it
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33 // License. However the source code for this file must still be made available
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40 // at http://sources.redhat.com/ecos/ecos-license/
41 // -------------------------------------------
42 //####ECOSGPLCOPYRIGHTEND####
43 //==========================================================================
44 //#####DESCRIPTIONBEGIN####
46 // Author(s): nickg from an original by hmt
47 // Contributors: nickg
49 // Purpose: Define kernel specific types
50 // Description: Kernel specific types
51 // Usage: #include <cyg/kernel/ktypes.h>
53 // cyg_priority priority; // etc
55 //####DESCRIPTIONEND####
57 //==========================================================================
59 // -------------------------------------------------------------------------
60 // Check that a configuration file is present.
62 #ifndef CYGONCE_PKGCONF_KERNEL_H
63 #error "No Configuration file included"
66 // -------------------------------------------------------------------------
68 #include <cyg/infra/cyg_type.h>
69 #include <stddef.h> // for size_t
71 // -------------------------------------------------------------------------
74 typedef cyg_int32 cyg_code; // General return/error/status code
76 typedef cyg_count32 cyg_priority; // priority value
78 typedef cyg_uint32 cyg_vector; // vector number/descriptor
80 typedef cyg_uint64 cyg_tick_count; // clock tick count value
82 // -------------------------------------------------------------------------
83 // Predefinitions of various kernel classes
88 class Cyg_Scheduler_Implementation;
90 class Cyg_HardwareThread;
91 class Cyg_SchedThread;
92 class Cyg_SchedThread_Implementation;
95 class Cyg_ThreadQueue;
96 class Cyg_ThreadQueue_Implementation;
101 // -------------------------------------------------------------------------
102 // Class and structure conversion macros.
103 // CYG_CLASSFROMFIELD translates a pointer to a field of a struct or
104 // class into a pointer to the class.
105 // CYG_OFFSETOFBASE yields the offset of a base class of a derived
107 // CYG_CLASSFROMBASE translates a pointer to a base class into a pointer
108 // to a selected derived class. The base class object _must_ be part of
109 // the specified derived class. This is essentially a poor mans version
110 // of the RTTI dynamic_cast operator.
111 // Caveat: These macros do not work for virtual base classes.
113 #define CYG_CLASSFROMFIELD(_type_,_member_,_ptr_)\
114 ((_type_ *)((char *)(_ptr_)-((char *)&(((_type_ *)0)->_member_))))
118 #define CYG_OFFSETOFBASE(_type_,_base_)\
119 ((char *)((_base_ *)((_type_ *)4)) - (char *)4)
121 # define CYG_CLASSFROMBASE(_class_,_base_,_ptr_)\
122 ((_class_ *)((char *)(_ptr_) - CYG_OFFSETOFBASE(_class_,_base_)))
126 // -------------------------------------------------------------------------
127 #endif // CYGONCE_KERNEL_KTYPES_H