NUTTRACER
From Nutwiki
Revision as of 12:02, 21 January 2007 by Harald (Talk | contribs) (Taken from Ernst Stippl's post to the mailing list)
How to use NUTTRACER
A while ago I used tracing:
I re-built Nut/OS with the "OS Tracer" flag set under the "RTOS Kernel" section in Nutconf and added some lines to my prog:
// set the _TRACING_ define to enable the calls to TRACE_add #define _TRACING_ #define stats
..program continues ...
#ifdef stats
if ( NutTraceInit ( 4000, TRACE_MODE_CIRCULAR ) == 0)
{
printf ("Error in NutTraceInit\r\n");
}
NutTraceRegisterUserTag(1, "Befor FGETS\0");
NutTraceRegisterUserTag(2, "After FGETS\0");
NutTraceRegisterUserTag(3, "Befor IOCTL\0");
NutTraceRegisterUserTag(4, "After FREAD\0");
#endif
..program continues ...
#ifdef stats
TRACE_ADD_ITEM(TRACE_TAG_USER,1)
#endif
..program continues ...
#ifdef stats
TRACE_ADD_ITEM(TRACE_TAG_USER,2)
#endif
#ifdef stats
NutTraceStop () ;
NutTracePrint (uart_FILE, 0);
#endif
..program ends
The NutTracePrint produced something like:
TRACE contains 4000 items, printing 4000 items. TAG PC/Info Time [s:ms:us] -------------------------------------------------- Trace Start 0x0 0:000:002 Thread Sleep main 0:006:168 Thread Yield main 0:006:172 Thread Wait httpd1 0:006:188 Thread Yield httpd1 0:006:192 Thread Wait httpd2 0:006:202 Thread Yield httpd2 0:006:207 Thread Wait FWD 0:006:219 Thread Yield FWD 0:006:223 Thread Wait tcpsm 0:006:646 Thread Yield tcpsm 0:006:651 Thread Yield idle 0:181:309 Thread Sleep rxi1 0:182:007 Thread Yield rxi1 0:182:012 Thread Yield idle 0:206:301 Thread Wait tcpsm 0:206:722 Thread Yield tcpsm 0:206:727 Thread Yield idle 0:381:248 Thread Sleep rxi1 0:381:867 Thread Yield rxi1 0:381:871 Thread Yield idle 0:406:241 Thread Wait tcpsm 0:406:662 Thread Yield tcpsm 0:406:666 Thread Yield idle 0:581:187 Thread Sleep rxi1 0:581:807 Thread Yield rxi1 0:581:811 Thread Yield idle 0:606:180 Thread Wait tcpsm 0:606:601
