func NewCMon() *ImpCMon {
//
var nR, nL int
c := func(a Any, k uint) bool {
switch k {
case lIn:
return nR == 0
case rIn:
return nL == 0
}
return true
}
f := func(a Any, k uint) Any {
switch k {
case lIn:
nL++
case lOut:
nL--
case rIn:
nR++
case rOut:
nR--
}
return nil
}
return &ImpCMon{mon.NewC(4, f, c)}
}
func NewCMon() *ImpCMon {
//
var nR, nW int
f := func(a Any, i uint) Any {
switch i {
case rIn:
nR++
case rOut:
nR--
case wIn:
nW++
case wOut:
nW--
}
return nil
}
p := func(a Any, i uint) bool {
switch i {
case rIn:
return nW == 0
case wIn:
return nR == 0 && nW == 0
}
return true
}
return &ImpCMon{mon.NewC(4, f, p)}
}
func NewLockCMon() *LockCMon {
//
nForks := make([]uint, nPhilos)
for p := uint(0); p < nPhilos; p++ {
nForks[p] = 2
}
c := func(a Any, i uint) bool {
if i == lock {
p := a.(uint) // p-th philosopher
return nForks[p] == 2
}
return true // unlock
}
f := func(a Any, i uint) Any {
p := a.(uint) // p-th philosopher
if i == lock {
nForks[left(p)]--
nForks[right(p)]--
} else { // unlock
nForks[left(p)]++
nForks[right(p)]++
}
return p
}
return &LockCMon{mon.NewC(nPhilos, f, c)}
}
func NewCMon() *ImpCMon {
//
var n uint
do := func(a Any, i uint) Any {
if i == customer {
n++
} else { // i == barber
n--
}
return 0
}
c := func(a Any, i uint) bool {
if i == customer {
return true
}
return n > 0 // i == barber
}
return &ImpCMon{mon.NewC(2, do, c)}
}
func NewMon() *ImpMon {
//
x := new(ImpMon)
x.balance = euro.New()
x.balance.Set2(0, 0)
p := func(a Any, i uint) bool {
if i == 1 { // draw
return a.(*euro.Imp).Eq(x.balance) || a.(*euro.Imp).Less(x.balance)
}
return true // deposit
}
f := func(a Any, i uint) Any {
if i == 0 { // deposit
x.balance.Plus(a.(*euro.Imp))
} else { // draw
x.balance.Minus(a.(*euro.Imp))
}
return x.balance
}
x.Imp = mon.NewC(2, f, p)
return x
}
func NewMon(a Any, n uint) *ImpMon {
//
if a == nil || n == 0 {
return nil
}
x := new(ImpMon)
x.Buffer = newBuffer(a, n)
p := func(a Any, i uint) bool {
if i == 0 { // Ins
return !x.Buffer.Full()
}
return x.Buffer.Num() > 0 // Get
}
f := func(a Any, i uint) Any {
if i == 0 { // Ins
x.Buffer.Ins(a)
return a
} // Get
return x.Buffer.Get()
}
x.Monitor /* x.m */ = mon.NewC(3, f, p)
return x
}
func NewCMon() *ImpCMon {
//
var m mon.Monitor
var avail [3]bool
smokerOut := true
c := func(a Any, k uint) bool {
if a == nil { // AgentOut, SmokerOut
return true
}
if k == agent { // AgentIn
return smokerOut
}
u := a.(uint) // SmokerIn
return avail[(u+1)%3] && avail[(u+2)%3]
}
f := func(a Any, k uint) Any {
if k == agent {
if a == nil { // AgentOut
// nixtun
} else { // AgentIn
u := a.(uint)
avail[(u+1)%3], avail[(u+2)%3] = true, true
}
} else {
if a == nil { // SmokerOut
smokerOut = true
} else { // SmokerIn
u := a.(uint)
avail[(u+1)%3], avail[(u+2)%3] = false, false
smokerOut = false
}
}
return a
}
m = mon.NewC(2, f, c)
return &ImpCMon{m}
}
