On Tue, Oct 28, 2008 at 01:53:30PM -0700, Adam Mitchell wrote:
> BTW, I replaced "string" with "Xstring" and it works. If I could avoid
> touching Apache's files, that would be nice. But I can live with this.
No need to. Just do:
#!/usr/sbin/dtrace -Cs
#define __builtin_va_list long
#define __attribute__(x)
#define string Xstring
#include <httpd.h>
#undef string
...
> Thanks for the help everybody!
>
> I want to share this with anyone who will come looking for this later:
>
> Copy the Apache header files to a work directory:
>
> # cp -R /opt/apache/include /export/home/amitchel
>
> My command line:
>
>
> dtrace -32 -C -I /export/home/amitchel/include -x cpppath=/usr/sfw/bin/cpp
> -Xs -s watchApacheRequests.d -p 843
>
> My script:
> #!/usr/sbin/dtrace
>
> #define __builtin_va_list long
> #define __attribute__(x)
> #include <httpd.h>
>
> pid$target:a.out:ap_process_request:entry
> {
>
> self->ts = timestamp;
> self->r = (request_rec*) copyin(arg0, sizeof(request_rec));
> self->uri = copyinstr((uintptr_t) self->r->uri);
>
> }
>
>
> pid$target:a.out:ap_process_request:return
> /self->ts/
> {
> @request_uris[self->uri] = quantize((timestamp - self->ts) / 1000000);
> self->ts = 0;
> self->uri = "err";
> }
>
> tick-5s
> {
> printa(@request_uris);
> }
>
>
>
> You'll get some errors like this because of the 'string' reserved keyword:
>
> cc1: warning: /dev/fd/6 is shorter than expected
> dtrace: failed to compile script watchApacheRequests.d:
> "/export/home/amitchel/include/ap_regex.h", line 117: syntax error near
> "string"
>
>
> Edit the file, replace 'string' with 'Xstring' and try again. I had to edit
> these files:
>
> /export/home/amitchel/include/ap_regex.h
> /export/home/amitchel/include/httpd.h
>
>
> And here's the script output:
>
> 0 49008 :tick-5s
> /hello
> value ------------- Distribution ------------- count
> 1 | 0
> 2 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 1
> 4 | 0
>
> /page1
> value ------------- Distribution ------------- count
> 1 | 0
> 2 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 1
> 4 | 0
>
> /pageTwo
> value ------------- Distribution ------------- count
> 1 | 0
> 2 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 1
> 4 | 0
> --
> This message posted from opensolaris.org
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