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/************************************************************************
* flight_recorder.h *
************************************************************************
* This code supports the a generic flight recorder. *
* Copyright (C) 20yy <Allan H Trautman> <IBM Corp> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the: *
* Free Software Foundation, Inc., *
* 59 Temple Place, Suite 330, *
* Boston, MA 02111-1307 USA *
************************************************************************
* See the fight_recorder.c file for useage deails. *
************************************************************************/
#include <linux/kernel.h>
/************************************************************************
* Generic Flight Recorder Structure *
************************************************************************/
struct flightRecorder { /* Structure Defination */
char Signature[8]; /* Eye Catcher */
int Size; /* Size of Flight Recorder */
int Flags; /* Format Flags. */
char* StartPointer; /* Buffer Starting Address */
char* EndPointer; /* Buffer Ending Address */
char* NextPointer; /* Next Entry Address */
char* WrapPointer; /* Point at which buffer wraps */
char* Buffer; /* Where the data log is. */
};
typedef struct flightRecorder FlightRecorder;
/************************************************************************
* Forware declares
************************************************************************/
FlightRecorder* alloc_Flight_Recorder(FlightRecorder* FrPtr, char* Signature, int SizeOfFr);
void fr_Log_Entry(FlightRecorder* LogFr, const char *fmt, ...);
int fr_Dump(FlightRecorder* Fr, char *Buffer, int BufferLen);
/************************************************************************
* Sample Macro to make life easier using the flight_recorder.
* TestFr is a global value.
* To use them: TESTFR("Test Loop value is &d",Loop");
************************************************************************/
#define LOGFR(...) (fr_Log_Entry(__VA_ARGS__))
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