Simple, I think, interrupt your CGI process in gdb to determine what
line that hung up on.
Bill
samarjit adhikari wrote:
> Hi All,
>
>
>
> Problem Description:
>
> ---------------------
>
> I have written a cgi script which does
>
> i) fork and exec a command with the child process
>
> ii) create pipe
>
> to read some data from the child process. The parent process waits untill it reads complete data from the child.
>
>
>
> observation from the packet capture:
>
> ------------------------------------
>
> i) IE is sending GET request with the CGI binary name in the URL
>
> i.e. GET /XXXX/<cgi-binary> say at the time T
>
> ii) The response came from the server at the time (T+300) sec.
>
>
>
> observation from the "top" command in the server side.
>
> --------------------------------------------------------
>
> i) Immediately the cgi-binary goes into "zimbie" state consuming 0.3% of the CPU.
>
> ii) The child process which is being created from the parent cgi-binary goes into "sleeping" state consuming 0.5% of CPU.
>
> ii) After 300 sec the parent cgi-binary exited and the response sent to the client.
>
>
>
> Which httpd server version was tried:
>
> --------------------------------------
>
> The same binary works perfectly in the httpd version 1.3.33.
>
> The same binary does not work in the httpd version 2.0.48 and 2.0.59
>
>
>
> I am attaching "httpd.conf " for the version 2.0.59.
>
>
>
> Search result on the Web:
>
> --------------------
>
> A bug(id 23911) in the apache version 2.0.54 exists due to which a CGI binaries goes into zombie state in some scenario. I have looked in to the following URL
>
> http://issues.apache.org/bugzilla/show_bug.cgi?id=23911.
>
>
> The problem can be reproduced with the sample program also.
> Sample program:
> ----------------------
> #include <stdio.h>
> #include <stdlib.h>
> int main(int argc, char *argv[])
> {
> int pid; /*child ID*/
> int ret_stat;
>
> pid=fork();
> if(pid!=0) /*PARENT*/
> {
> printf("Content-type: text/html\n\n");
> printf("<html><head></head><body>\n");
> printf("<h1>PARENTAL ZOMBIES 3</h1>\n");
> printf("</body></html>\n");
> }
> else
> { /*CHILD*/
> sleep(300);
> exit(0);
> }
> return(0);
> }
>
> I am not sure ,whether it is a configuration issue or any other. Any pointer on this issue will help me a lot.
>
>
>
> With regards,
>
>
>
> SaMaR
>
>
>
>
> __________________________________________________________
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>
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