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return values of socket_recvmsg

php.internals

Sam Ding

8 years ago

The test case  ext/sockets/tests/socket_recvmsg.php  has following output
on x86_64:

=======
...
1 Array
2 (
3    [name] => Array
4        (
5            [family] => 10
6            [addr] => ::1
7            [port] => 7001
8            [flowinfo] => 0
9            [scope_id] => 0
10        )
11
12    [control] => Array
13       (
14            [0] => Array
15               (
16                    [level] => 41
17                    [type] => 50
18                    [data] => Array
19                       (
20                            [addr] => ::1
21                            [ifindex] => 1
22                        )
23                )
24        )
...
=======
This is output  by c
function:"socket_recvmsg"(/home/work/php/php/ext/sockets/sendrecvmsg.c:214),
which returns a struct "executor_globals.current_execute_data".

The struct  is defined as :

(gdb)  ptype executor_globals.current_execute_data
type = struct _zend_execute_data {
const zend_op *opline;
zend_execute_data *call;
zval *return_value;
zend_function *func;
zval This;
zend_execute_data *prev_execute_data;
zend_array *symbol_table;
void **run_time_cache;
zval *literals;
} *

Where do  the above output values  (line 18-21) store in the struct
_zend_execute_data ?


Thanks,

Sam

Kalle Sommer Nielsen

8 years ago

Hi Sam

2018-01-25 23:11 GMT+01:00 Sam Ding <samding@ca.ibm.com>:

>
> The test case  ext/sockets/tests/socket_recvmsg.php  has following output
> on x86_64:
>
> =======
> ...
> 1 Array
> 2 (
> 3    [name] => Array
> 4        (
> 5            [family] => 10
> 6            [addr] => ::1
> 7            [port] => 7001
> 8            [flowinfo] => 0
> 9            [scope_id] => 0
> 10        )
> 11
> 12    [control] => Array
> 13       (
> 14            [0] => Array
> 15               (
> 16                    [level] => 41
> 17                    [type] => 50
> 18                    [data] => Array
> 19                       (
> 20                            [addr] => ::1
> 21                            [ifindex] => 1
> 22                        )
> 23                )
> 24        )
> ...
> =======
> This is output  by c
> function:"socket_recvmsg"(/home/work/php/php/ext/sockets/sendrecvmsg.c:214),

You can find the implementation of socket_recvmsg() in the ext/sockets
directory here:
http://git.php.net/?p=php-src.git;a=blob;f=ext/sockets/sendrecvmsg.c;h=7b9c4e8ad357b73b514dc5feb8dc8d9ca215126b;hb=HEAD#l210

--
regards,

Kalle Sommer Nielsen
kalle@php.net

Sam Ding

8 years ago

Thank Kalle,

I knew the implementaion of socket_recvmsg(), but want to know the return
data structure.
The test on Big_endian (s390x) got a little different return result than on
x86_64, try to dig out
where the problem is.

Thanks,

Sam


kalle.php@gmail.com wrote on 01/26/2018 01:58:23 AM:

> From: Kalle Sommer Nielsen <kalle@php.net>
> To: Sam Ding <samding@ca.ibm.com>
> Cc: PHP internals <internals@lists.php.net>
> Date: 01/26/2018 01:58 AM
> Subject: Re: [PHP-DEV] return values of socket_recvmsg
> Sent by: kalle.php@gmail.com
>
> Hi Sam
>
> 2018-01-25 23:11 GMT+01:00 Sam Ding <samding@ca.ibm.com>:
> >
> > The test case  ext/sockets/tests/socket_recvmsg.php  has following

output

> > on x86_64:
> >
> > =======
> > ...
> > 1 Array
> > 2 (
> > 3    [name] => Array
> > 4        (
> > 5            [family] => 10
> > 6            [addr] => ::1
> > 7            [port] => 7001
> > 8            [flowinfo] => 0
> > 9            [scope_id] => 0
> > 10        )
> > 11
> > 12    [control] => Array
> > 13       (
> > 14            [0] => Array
> > 15               (
> > 16                    [level] => 41
> > 17                    [type] => 50
> > 18                    [data] => Array
> > 19                       (
> > 20                            [addr] => ::1
> > 21                            [ifindex] => 1
> > 22                        )
> > 23                )
> > 24        )
> > ...
> > =======
> > This is output  by c
> >

function:"socket_recvmsg"(/home/work/php/php/ext/sockets/sendrecvmsg.c:214),

>
> You can find the implementation of socket_recvmsg() in the ext/sockets
> directory here:
> https://urldefense.proofpoint.com/v2/url?
>

u=http-3A__git.php.net_-3Fp-3Dphp-2Dsrc.git-3Ba-3Dblob-3Bf-3Dext_sockets_sendrecvmsg.c-3Bh-3D7b9c4e8ad357b73b514dc5feb8dc8d9ca215126b-3Bhb-3DHEAD-23l210&d=DwIBaQ&c=jf_iaSHvJObTbx-

> siA1ZOg&r=CBZ1IFMUPf-s4Wt-
>

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