86 lines
1.6 KiB
C
86 lines
1.6 KiB
C
/*
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Copyright (c) 2002, Thomas Kurschel
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Part of Radeon driver
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Fast logger
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As syslog is very slow and tends to loose
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data if its buffer overflows (which occurs much
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too often), this module provides a fast (and memory-
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wasting) logging mechanism. You need a seperate
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application to retrieve the log.
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Everything is thread-safe.
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*/
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#ifndef __LOG_COLL_H__
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#define __LOG_COLL_H__
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#include <SupportDefs.h>
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// by undefining this flag, all logging functions
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// are resolved to empty space, so don't add
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// extra tests in your code
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#undef ENABLE_LOGGING
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//#define ENABLE_LOGGING
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// add log entry with 0..3 (uint32) data
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#define LOG( li, what ) log( li, what, 0 )
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#define LOG1( li, what, arg1 ) log( li, what, 1, arg1 );
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#define LOG2( li, what, arg1, arg2 ) log( li, what, 2, arg1, arg2 );
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#define LOG3( li, what, arg1, arg2, arg3 ) log( li, what, 3, arg1, arg2, arg3 );
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// one log entry
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typedef struct log_entry_t {
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uint64 tsc;
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uint16 what;
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uint8 num_args;
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uint32 args[1];
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} log_entry;
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struct log_info_t;
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#if defined(__cplusplus)
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extern "C" {
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#endif
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#ifdef ENABLE_LOGGING
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void log( struct log_info_t *li, uint16 what, const uint8 num_args, ... );
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#else
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#define log( a, b, c... )
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#endif
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// define LOG_INCLUDE_STARTUP in your device driver
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#ifdef LOG_INCLUDE_STARTUP
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uint32 log_getsize( struct log_info_t *li );
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void log_getcopy( struct log_info_t *li, void *dest, uint32 max_size );
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#ifdef ENABLE_LOGGING
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struct log_info_t *log_init( uint32 size );
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void log_exit( struct log_info_t *li );
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#else
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#define log_init( a ) NULL
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#define log_exit( a )
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#endif
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#endif
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#if defined(__cplusplus)
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}
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#endif
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#endif
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