Hi Yann,
For my product I need to run apache as single process. As httpd -X works
for me. But the issue is to stop httpd -X, we need to kill process. While
killing the process, semaphore exists in kernel directory.
If I repeat for 10-15 times, then it will give error like no space
available on device.
To solve this error, either I need to explicitly kill each semaphore id and
then start. So I thought not to create semaphore itself.
Therefore I commented following lines in worker.c
if ((rv = SAFE_ACCEPT((apr_snprintf(id, sizeof id, "%i",
i),ap_proc_mutex_create(&all_buckets[i].mutex,NULL, AP_ACCEPT_MUTEX_TYPE,
id, s, pconf, 0))))) {
ap_log_error(APLOG_MARK, APLOG_CRIT | level_flags, rv, (startup
? NULL : s), "could not create accept mutex");
return !OK;
After commenting above line, when I am starting httpd -X, it is giving
signal 31 error. When starting with httpd, its only starting parent and
killing child processes with signal 31 error.
What should I change if I want to start apache in debug mode and not to
create semaphore ?
Thanks
Hemant
On Thu, Nov 2, 2017 at 4:01 PM, Yann Ylavic <ylavic....@gmail.com> wrote:
> Hi Hemant,
>
> On Thu, Nov 2, 2017 at 5:47 AM, Hemant Chaudhary
> <hemantdude.chaudh...@gmail.com> wrote:
> >
> > Semaphore is used in multi process environment to share resources within
> > processes. But when I am starting apache in debug mode i:e single process
> > then still it creates semaphore. May I know the reason why it is creating
> > semaphore in debug mode also.
>
> The debug mode has no particular code optimization or walkout,
> precisely because we want to be able to diagnose potential bugs for
> the non-debug case.
>
> Regards,
> Yann.
>
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