Getting Started with QNX Neutrino - QNX Software Systems

tp1.c
© 2009, QNX Software Systems GmbH & Co. KG.
contextfree (THREAD_POOL_PARAM_T *param)
{
tag ("contextfree"); printf ("param %p\n", param);
}
void
unblockfunc (THREAD_POOL_PARAM_T *ctp)
{
tag ("unblockfunc"); printf ("ctp %p\n", ctp);
}
int
handlerfunc (THREAD_POOL_PARAM_T *ctp)
{
static int i = 0;
tag ("handlerfunc"); printf ("ctp %p\n", ctp);
if (i++ > 15) {
tag ("handlerfunc"); printf ("exceeded 15 operations, return 0\n");
return (0);
}
tag ("handlerfunc"); printf ("sleep (%d)\n", pthread_self () * 25);
sleep (pthread_self () * 25);
tag ("handlerfunc"); printf ("done sleep\n");
/*
i = 0;
if (i++ & 1) {
tag ("handlerfunc"); printf ("returning 0\n");
return (0);
} else {
*/
tag ("handlerfunc"); printf ("returning 0x%08X\n", 0x30000000 + pthread_self ());
return (0x30000000 + pthread_self ());
/*
}
*/
}
main ()
{
thread_pool_attr_t tp_attr;
void *tpp;
memset (&tp_attr, 0, sizeof (tp_attr));
tp_attr.handle = (void *) 0x12345678; // passed to contextalloc
tp_attr.block_func = blockfunc;
tp_attr.unblock_func = unblockfunc;
tp_attr.context_alloc = contextalloc;
tp_attr.context_free = contextfree;
tp_attr.handler_func = handlerfunc;
tp_attr.lo_water = 3;
tp_attr.hi_water = 7;
tp_attr.increment = 2;
tp_attr.maximum = 10;
tpp = thread_pool_create (&tp_attr, POOL_FLAG_USE_SELF);
if (tpp == NULL) {
fprintf (stderr,
"%s: can’t thread_pool_create, errno %s\n",
progname, strerror (errno));
322 Appendix: C • Sample Programs April 30, 2009