Adic Server Uživatelský manuál stáhnout pdf (Strana 193)

Response Technique 5-21

21 Dec 2001

Response Technique

This section describes the most desirable response processing

technique.

Setup

The following code should be executed upon startup. This

code installs a signal handler, which will be automatically run

every time one of the child processes terminates. At this point

retrieve the results, place them into internal data structures

and free the shared memory array entry. See Figure 5-21.

Figure 5-21 Setup Signal Handler

. . .

/* dasadmin sample application, dasadmin.c file */

int ( *func )();

struct sigaction action;

aci_async_entry *async_entry;

action.sa_handler = wait_for_child;

sigemptyset(&action.sa_mask);

action.sa_flags = 0;

if (sigaction(SIGCHLD, &action, (struct sigaction*)0)

== (int)SIG_ERR)

{

fprintf( stderr, "Unable to set signal handler for

SIGCHLD\n");

return( 1 );

}

. . .

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Adic Server Uživatelský manuál Strana 193