Hi Nadir,
Your input is very useful. We will try this.
Many thanks.
Samisa...
Nadir Amra wrote:
Correction would need to be made for thread id in sprintf, the code below
assumes it is long long, but on 32 but systems it is int.
tid = pthread_getthreadid_np();
sprintf(myfmt, "<%s.%03ld %016llx> %s", tempTimeStr, t.tv_usec/1000,
*((long long *)&tid), fmt);
Nadir K. Amra
Nadir Amra/Rochester/[EMAIL PROTECTED] wrote on 02/05/2006 11:28:07 AM:
Note I have not looked at axis2 code, so I am talking canceptually....
I am assuming there is a point where there is some initialization going
on
prior to anyone using the trace that is tied to configuration. At that
time, one can set a global file handle to the log file by calling
trace_init() which simply contains the following code:
FILE * traceFp = fopen(logFile, "w+");
setvbuf(traceFp, NULL, _IOFBF, (size_t)(8*1024));
The above assumes trace records are no longer than 8K. This will ensure
no
buffering takes place.
Then, in the actual routine that performs the trace:
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <pthread.h>
void trace(const char *fmt, ... )
{
char tempTimeStr[200];
struct timeval t;
struct tm *lTime;
pthread_id_np_t tid;
va_list args;
char myfmt[8*1024];
if (traceFp == NULL)
return;
gettimeofday(&t, NULL);
lTime = localtime((const time_t *)&t.tv_sec);
strftime(tempTimeStr, 100, "%d/%b/%Y %H:%M:%S", lTime);
tid = pthread_getthreadid_np();
sprintf(myfmt, "<%s.%03ld %016llx> %s", tempTimeStr, t.tv_usec/1000,
*((long long *)&tid), fmt);
va_start(args, fmt);
vfprintf(traceFp, myfmt, args);
va_end(args);
fflush(traceFp);
}
The above code is thread-safe and not only prints out the date and time
(included milli-seconds), but the thread ID also.
Nadir K. Amra
Samisa Abeysinghe <[EMAIL PROTECTED]> wrote on 02/03/2006
10:51:11 PM:
Hi All,
Once we have the threads in place, we have to ensure that our
logging mechanism is thread safe.
May be we can learn some stuff from Apache httpd code.
Unfortunately, we are not lucky as much as Java guys, we do not
have
a log4j equivalent. We have log4c http://log4c.sourceforge.net/. But I
am not convinced of its maturity and licence.
Thoughts please...
Thanks,
Samisa...
