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Posted to users@httpd.apache.org by Vyacheslav Zholudev <vy...@gmail.com> on 2009/06/04 20:36:09 UTC
[users@httpd] Log output from fprintf(stdout, ...)
I have an Apache Module which contains such methods like
fprintf(stderr, "%s\n", message); and fprintf(stdout, "%s\n", message);
They are executed under certain circumstances, but I can't see the output in
the Apache's log files.
I use directive ErrorLog and CustomLog ... combined with LogLevel debug, but
still can't see the result of my fprintfs.
Does anybody have an idea what I might do wrong?
Thanks in advance,
Vyacheslav
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Re: [users@httpd] Log output from fprintf(stdout, ...)
Posted by Vyacheslav Zholudev <vy...@gmail.com>.
Thanks, Tom. It was helpful. However, I also use the part of code which
contains fprintfs in another context, so I really need those fprintfs. And
moreover I don't want to consider those messages as apache log messages.
So the question remains, is it possible to log messages sent to stdout and
stderr?
The possible temporary solution is to run Apache in non-daemon mode and
redirect its output to a file.
Tom Evans-3 wrote:
>
> On Thu, 2009-06-04 at 11:36 -0700, Vyacheslav Zholudev wrote:
>> I have an Apache Module which contains such methods like
>> fprintf(stderr, "%s\n", message); and fprintf(stdout, "%s\n", message);
>>
>> They are executed under certain circumstances, but I can't see the output
>> in
>> the Apache's log files.
>>
>> I use directive ErrorLog and CustomLog ... combined with LogLevel debug,
>> but
>> still can't see the result of my fprintfs.
>> Does anybody have an idea what I might do wrong?
>>
>> Thanks in advance,
>> Vyacheslav
>
> Use ap_log_error() instead. eg
>
> #include <http_log.h>
>
> void ap_log_error(const char *file, int line, int level, const
> server_rec *s, const char* fmt, ...);
>
> Typically, you would use macros for the first two arguments:
>
> ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, cmd->s, "%s", message);
>
> Cheers
>
> Tom
>
>
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Re: [users@httpd] Log output from fprintf(stdout, ...)
Posted by Tom Evans <te...@googlemail.com>.
On Thu, 2009-06-04 at 11:36 -0700, Vyacheslav Zholudev wrote:
> I have an Apache Module which contains such methods like
> fprintf(stderr, "%s\n", message); and fprintf(stdout, "%s\n", message);
>
> They are executed under certain circumstances, but I can't see the output in
> the Apache's log files.
>
> I use directive ErrorLog and CustomLog ... combined with LogLevel debug, but
> still can't see the result of my fprintfs.
> Does anybody have an idea what I might do wrong?
>
> Thanks in advance,
> Vyacheslav
Use ap_log_error() instead. eg
#include <http_log.h>
void ap_log_error(const char *file, int line, int level, const
server_rec *s, const char* fmt, ...);
Typically, you would use macros for the first two arguments:
ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, cmd->s, "%s", message);
Cheers
Tom
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