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log_info0 log_print0

si cheng
Expert 2685 points

hello:

I am using bios_6_33_06_50 ,CCS5.3. My app is a realtime APP, I want to printf some logs, I am not sure whether use log_info0 or log_print0, witch is better for my realtime sysytem ?

 

Best Regards

Si

  • 0
    Guru 19890 points

    Hi Si,

    Real time diagnostic logging depends on the implementation of Log module.
    You can start to study logging from : 

    http://rtsc.eclipse.org/docs-tip/Using_xdc.runtime_Logging

    If the implementation of Log is LoggerBuf, Log_print0/info0 would be processed in real time.
    LoggerBuf is one of real time diagnostic logging implementation.

    Best Regards,
    Kawada 

  • 0 in reply to Naoki Kawada
    TI__Guru* 96960 points

    To add to Kawada's correct comments...here is the generated code for the two APIs (in Log__epilogue.h)

    Log_info0

    #define xdc_runtime_Log_info0(fmt) \
        xdc_runtime_Log_info1(fmt,0)
        
    #define xdc_runtime_Log_info1(fmt, a1) \
        ((Module__LOGDEF && xdc_runtime_Diags_query(Log_L_info)) ? \
            xdc_runtime_Log_doPut4((Log_L_info), Module__MID, (IArg) xdc_FILE__, \
                 (IArg) __LINE__, (IArg) fmt, (a1)) : (void)0 \
        )    

    Log_print0

    #define xdc_runtime_Log_print0(mask, fmt) \
        ((Module__LOGDEF && xdc_runtime_Diags_query(mask)) ? \
            xdc_runtime_Log_doPut1(mask, Module__MID, (IArg) fmt) : (void)0 \
        )

    Both end calling a Log_doPut call (which ends up calling a logger implementation like LoggerBuf), but the info one adds the filename and line number. So Log_print0 potentially has slightly better performance (depends on the logger implementation though).

    Todd