NonStop S-Series Server Description Manual (G06.24+)

TNS Instruction Set Definition
HP NonStop S-Series Server Description Manual—520331-003
C-41
Instruction Definitions
0 0 0 5 0 3* XIST XRAY increment state
CB=ext addr
A=counter offset
'Indivisible On';
t := xmem2[CB];
if t.<0> then
{a := t + $XADR(A);
! increment state
if xmem[a]<>0xFFFF then
{t:=xmem[a]:= xmem[a]+1;
if xmem[a-2]’<‘t then
xmem[a-2] := t;
a:=a+2;
clock:=sysstack[%350:%353]
+ microsecond counter;
xmem4[a]:=xmem4[a] -clock
xmem[t] := 0;
}
};
'Indivisible Off';
RP:=RP-3;
** The counters must be present in memory
[ See Note 3: CLOCK ADDR ]
0 0 0 5 0 4* XDST XRAY Decrement state
CB=ext addr
A=counter offset
'Indivisible On';
t := xmem2[CB];
if t.<0> then
{a := t + $XADR(A);
! decrement state
if xmem[a]<>0 then
{xmem[a] := xmem[a]-1;
xmem[t] := 0;
a:=a+2;
clock:=sysstack[%350:%353]
+ microsecond counter;
xmem4[a]:=xmem4[a] +clock
}
};
'Indivisible Off';
RP:=RP-3;
** The counters must be present in memory
[ See Note 3: CLOCK ADDR ]
0 0 0 5 0 5C RTIM Read System Time
RP := RP + 4;
DCBA := CLOCK + 'micro second counter';
CLOCK = sysstack[ %350:%353 ]
[ See Note 3: CLOCK ADDR ]
Table C-2. Instruction Definitions (page31of38)