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76 lines
2.0 KiB
C
76 lines
2.0 KiB
C
/*
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* PROGRAM: JRD Access Method
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* MODULE: msg.h
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* DESCRIPTION: Message system definitions
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*
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* The contents of this file are subject to the Interbase Public
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* License Version 1.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy
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* of the License at http://www.Inprise.com/IPL.html
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*
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* Software distributed under the License is distributed on an
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* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express
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* or implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code was created by Inprise Corporation
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* and its predecessors. Portions created by Inprise Corporation are
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* Copyright (C) Inprise Corporation.
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*
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* All Rights Reserved.
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* Contributor(s): ______________________________________.
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*
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*/
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#ifndef JRD_MSG_H
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#define JRD_MSG_H
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#define MSG_NUMBER(facility, code) ((SLONG) facility * 10000 + code)
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const USHORT MSG_BUCKET = 1024;
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const UCHAR MSG_MAJOR_VERSION = 1;
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// trick to silence the compiler when FB_MSG_MINOR_VERSION is 0
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#define FB_MSG_MINOR_VERSION 1
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const UCHAR MSG_MINOR_VERSION = FB_MSG_MINOR_VERSION;
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// Message file header block
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struct isc_msghdr
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{
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UCHAR msghdr_major_version; // Version number
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UCHAR msghdr_minor_version; // Version number
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USHORT msghdr_bucket_size; // Bucket size of B-tree
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ULONG msghdr_top_tree; // Start address of first index bucket
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ULONG msghdr_origin; // Origin for data records, unused.
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USHORT msghdr_levels; // Levels in tree
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};
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// Index node
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struct msgnod
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{
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ULONG msgnod_code; // Message code
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ULONG msgnod_seek; // Offset of next bucket or message
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};
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// Leaf node
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struct msgrec
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{
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ULONG msgrec_code; // Message code
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USHORT msgrec_length; // Length of message text
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USHORT msgrec_flags; // Misc flags
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TEXT msgrec_text[1]; // Text of message
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inline msgrec* next() const
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{
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IPTR next = (IPTR) this;
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next += FB_ALIGN(offsetof(msgrec, msgrec_text[0]) + msgrec_length, sizeof (SLONG));
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return (msgrec*) next;
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}
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};
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typedef msgrec* MSGREC;
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#endif // JRD_MSG_H
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