Re: Apache + mod_php performance

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Sujet : Re: Apache + mod_php performance
De : arne (at) *nospam* vajhoej.dk (Arne Vajhøj)
Groupes : comp.os.vms
Date : 07. Oct 2024, 18:49:23
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <ve16v4$1mvdn$1@dont-email.me>
References : 1 2 3 4 5 6 7
User-Agent : Mozilla Thunderbird
On 10/7/2024 12:47 PM, Mark Berryman wrote:
It is most definitely possible as that is precisely what the auxiliary server in TCPIP Services does.  It listens for a connection, then creates a process to handle it.  See the description of TCPIP$C_AUXS in the TCPIP Services programming documentation.
SYS$COMMON:[SYSHLP.EXAMPLES.TCPIP]TCPIP$TCP_SERVER_SOCK_AUXS.C has:
     /*
      * create socket
      */
     if ( (sockfd = socket(TCPIP$C_AUXS, SOCK_STREAM, 0)) < 0 )
    {
    perror( "Failed to create socket" );
    exit( EXIT_FAILURE );
    }
but the equivalent SYS$COMMON:[SYSHLP.EXAMPLES.TCPIP]TCPIP$TCP_SERVER_QIO_AUXS.C
gives some hints about what it is doing:
     struct sockchar conn_sockchar;  /* connect socket char buffer     */
...
     $DESCRIPTOR( inet_device,    /* string descriptor with logical   */
        "SYS$NET:"    ); /* name of internet pseudodevice    */
...
     /*
      * init connection socket characteristics buffer
      */
     conn_sockchar.prot = TCPIP$C_TCP;
     conn_sockchar.type = TCPIP$C_STREAM;
     conn_sockchar.af   = TCPIP$C_AUXS;
...
     /*
      * assign device socket
      */
     status = sys$assign( &inet_device,     /* device name      */
           &conn_channel,     /* i/o channel       */
           0,          /* access mode          */
           0        /* not used             */
              );
     if ( !(status & STS$M_SUCCESS) )
    {
    printf( "Failed to assign i/o channel to TCPIP device\n" );
    exit( status );
    }
...
     /*
      * create connection socket
      */
     status = sys$qiow( EFN$C_ENF,           /* event flag      */
                        conn_channel,        /* i/o channel      */
                        IO$_SETMODE,         /* i/o function code      */
                        &iosb,               /* i/o status block      */
                        0,                   /* ast service routine      */
                        0,                   /* ast parameter      */
                        &conn_sockchar,      /* p1 - socket char buffer      */
                        0,                   /* p2      */
                        0,                   /* p3      */
                        0,                   /* p4      */
                        0,                   /* p5      */
                        0                    /* p6      */
                      );
     if ( status & STS$M_SUCCESS )
         status = iosb.status;
     if ( !(status & STS$M_SUCCESS) )
         {
         printf( "Failed to create socket\n" );
         exit( status );
         }
But it is not clear (at least not to me) whether:
- the original TCP/IP device was made shareable and SYS$NET just points to it
or:
- the original TCP/IP device is connected to a new pseudodevice that
   SYS$NET points to
The first seems by far the simplest, but the comment indicate
the second.
Arne

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