static void start_lock()
{
struct dsc$descriptor_s name_s;
int status;
char *name = "PINGLOCK";
cur_mode = LCK$K_EXMODE;
*lvb_int = us-1;
/* Make a descriptor of the name */
memset(&name_s, 0, sizeof(struct dsc$descriptor_s));
name_s.dsc$w_length = strlen(name);
name_s.dsc$a_pointer = name;
/* Lock it */
status = sys$enqw(0,
cur_mode,
&our_lksb,
0, /* flags */
&name_s,
0, /* parent */
compast_routine,
0, /* astp */
blockast_routine,
PSL$C_USER,
RSDM$K_PROCESS_RSDM_ID,
0);
if (status != SS$_NORMAL)
{
printf("lock enq failed : %s\n", strerror(EVMSERR, status));
sys$exit(status);
}
printf("Lock ID is %x\n", our_lksb.sb_lkid);
return;
}
asmlinkage int exe$enqw_wrap(struct struct_args * s) {
return exe$enqw(s->s1,s->s2,s->s3,s->s4,s->s5,s->s6,s->s7,s->s8,s->s9,s->s10,s->s11);
}
main(){
struct _lksb lksb;
unsigned int status, lkmode, flags;
lkmode = LCK$K_NLMODE;
flags = 0;//LCK$M_SYSTEM;
status = sys$enqw(0,
lkmode,
&lksb,
flags,
&resource,
0, ast, 42, blkast, 0, 0);
printf("main %x %x %x %x\n",getpid(),status,lksb.lksb$w_status,lksb.lksb$l_lkid);
sleep (10);
lkmode = LCK$K_PWMODE;
flags = LCK$M_CONVERT;
printf("a %x\n",getpid());
status = sys$enqw(0,
lkmode,
&lksb,
flags,
0, 0, ast, 43, blkast, 0, 0);
printf("a %x %x %x %x\n",getpid(),status,lksb.lksb$w_status,lksb.lksb$l_lkid)\
;
sleep (10);
lkmode = LCK$K_PRMODE;
lkmode = LCK$K_PRMODE;
flags = LCK$M_CONVERT;
printf("b %x\n",getpid());
status = sys$enqw(0,
lkmode,
&lksb,
flags,
0, 0, ast, 44, blkast, 0, 0);
printf("b %x %x %x %x\n",getpid(),status,lksb.lksb$w_status,lksb.lksb$l_lkid)\
;
sleep (10);
status = sys$deq(lksb.lksb$l_lkid,0,0,0);
printf("c %x %x %x %x\n",getpid(),status,lksb.lksb$w_status,lksb.lksb$l_lkid)\
;
sleep(20);
}