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|
RoomModel room.basic.service.timing {
import room.basic.types.* from "Types.room"
async ActorClass ATimingService {
Interface {
SPP timer: PTimer
}
Structure {
usercode1 {
"#include \"osal/etTime.h\" "
"#define ET_NB_OF_TCBS 30"
"typedef struct etTCB etTimerControlBlock;"
"struct etTCB {"
" etTime expTime;"
" etTime pTime;"
" int32 portIdx;"
" etTimerControlBlock* next;"
"};"
}
usercode2 {
"// uc2"
} usercode3 {
"// uc3"
}
Attribute tcbs [ 30 ]: tcb
Attribute usedTcbsRoot: tcb ref
Attribute freeTcbsRoot: tcb ref
ServiceImplementation of timer
}
Behavior {
ctor {
"memset(tcbs.getData(), sizeof(tcbs), 0);"
}
Operation getTcb(): tcb ref {
"etTimerControlBlock* temp = freeTcbsRoot;"
""
"if (freeTcbsRoot != 0) {"
" freeTcbsRoot = freeTcbsRoot->next;"
" temp->next = 0;"
"}"
"return temp;"
""
}
Operation returnTcb(block: tcb ref) {
"block->next = freeTcbsRoot;"
"freeTcbsRoot = block;"
}
Operation removeTcbFromUsedList(idx: int32) {
"etTimerControlBlock* temp = usedTcbsRoot;"
"etTimerControlBlock* temp2 = usedTcbsRoot;"
""
"if (temp == 0)"
" return;"
""
"if (usedTcbsRoot->portIdx == idx) {"
" /* element found, the first one */"
" usedTcbsRoot = usedTcbsRoot->next;"
" returnTcb(temp);"
" return;"
"}"
""
"temp = temp->next;"
"while (temp != 0) {"
" if (temp->portIdx == idx) {"
" temp2->next = temp->next;"
" returnTcb(temp);"
" return;"
" } else {"
" /* try next */"
" temp2 = temp;"
" temp = temp->next;"
" }"
"}"
}
Operation putTcbToUsedList(block: tcb ref) {
"etTimerControlBlock* temp = usedTcbsRoot;"
"etTimerControlBlock* temp2 = usedTcbsRoot;"
""
"if (temp == 0) {"
" /* list empty put new block to root */"
" block->next = 0;"
" usedTcbsRoot = block;"
" return;"
"}"
""
"while (1) {"
" if (temp != 0) {"
" if (isTimeGreater(&block->expTime, &temp->expTime)) {"
" /* try next position */"
" temp2 = temp;"
" temp = temp->next;"
" } else {"
" /* right position found */"
" block->next = temp;"
" if (temp == usedTcbsRoot) {"
" usedTcbsRoot = block;"
" } else {"
" temp2->next = block;"
" }"
" return;"
" }"
" } else {"
" /* end of list reached */"
" block->next = 0;"
" temp2->next = block;"
" return;"
" }"
"}"
}
Operation isTimeGreater(t1: targetTime ref, t2: targetTime ref): boolean {
"if (t1->sec > t2->sec)"
" return ET_TRUE;"
"if (t1->sec < t2->sec)"
" return ET_FALSE;"
"if (t1->nSec > t2->nSec)"
" return ET_TRUE;"
"return ET_FALSE;"
}
Operation addTime(t1: targetTime ref, t2: targetTime ref) {
"t1->sec += t2->sec;"
"t1->nSec += t2->nSec;"
"while (t1->nSec >= 1000000000L) {"
" t1->sec++;"
" t1->nSec -= 1000000000L;"
"}"
}
// Operation printList(){
// "etTimerControlBlock* temp=usedTcbsRoot;"
// " printf(\"list: \");"
// " while (temp!=0){"
// " printf(\"(%ld,%ld),\",temp->expTime.sec,temp->expTime.nSec);"
// " temp=temp->next;"
// " }"
// " printf(\"\\n\");"
// }
StateMachine {
Transition tr0: initial -> Operational {
action {
"int i;"
"usedTcbsRoot = 0;"
"freeTcbsRoot = &tcbs[0];"
"tcbs[ET_NB_OF_TCBS - 1].next = 0;"
"for (i = 0; i < ET_NB_OF_TCBS - 1; i++) {"
"\ttcbs[i].next = &tcbs[i + 1];"
"}"
}
}
Transition tr1: Operational -> Operational {
triggers {
<startTimeout: timer>
}
action {
"etTimerControlBlock* timer = getTcb();"
"etTime t;"
"if (timer != 0) {"
"\tt.sec = time / 1000;"
"\tt.nSec = (time % 1000) * 1000000L;"
"\ttimer->pTime.sec = 0;"
"\ttimer->pTime.nSec = 0;"
"\ttimer->portIdx = ifitem->getIdx();"
"\tgetTimeFromTarget(&(timer->expTime));"
"\taddTime(&(timer->expTime), &t);"
"\tputTcbToUsedList(timer);"
"}"
}
}
Transition tr3: Operational -> Operational {
triggers {
<startTimer: timer>
}
action {
"etTimerControlBlock* timer = getTcb();"
"etTime t;"
"if (timer != 0) {"
"\tt.sec = time / 1000;"
"\tt.nSec = (time % 1000) * 1000000L;"
"\ttimer->pTime = t;"
"\ttimer->portIdx = ifitem->getIdx();"
"\tgetTimeFromTarget(&(timer->expTime));"
"\taddTime(&(timer->expTime), &t);"
"\tputTcbToUsedList(timer);"
"}"
}
}
Transition tr4: Operational -> Operational {
triggers {
<kill: timer>
}
action {
"removeTcbFromUsedList(ifitem->getIdx());"
}
}
State Operational {
entry {
"// prepare"
} do {
"// maintain timers"
"etTimerControlBlock* temp;"
"etTime t;"
""
"getTimeFromTarget(&t);"
"while (usedTcbsRoot != 0) {"
"\tif (isTimeGreater(&t, &(usedTcbsRoot->expTime))) {"
"\t\ttimer.get(usedTcbsRoot->portIdx).timeout();"
"\t\ttemp = usedTcbsRoot;"
"\t\tusedTcbsRoot = usedTcbsRoot->next;"
"\t\tif ((temp->pTime.sec == 0) && (temp->pTime.nSec == 0)) {"
"\t\t\t// single shot timer"
"\t\t\treturnTcb(temp);"
"\t\t} else {"
"\t\t\t// periodic timer"
"\t\t\taddTime(&temp->expTime, &temp->pTime);"
"\t\t\tputTcbToUsedList(temp);"
"\t\t}"
"\t} else {"
"\t\tbreak;"
"\t}"
"}"
}
}
}
}
}
ProtocolClass PTimer {
usercode1 {
"#define ET_TIMER_RUNNING 0x01"
"#define ET_TIMER_PERIODIC 0x02"
}
usercode2 {
"//uc2 "
}
incoming {
Message startTimer(time: uint32)
Message startTimeout(time: uint32)
Message kill()
}
outgoing {
Message timeout()
}
conjugated PortClass
{
Attribute status: int8 = "0"
handle
incoming startTimer {
"if (status==0){
status=ET_TIMER_RUNNING | ET_TIMER_PERIODIC;
startTimer_impl(time);
}
"
}
handle
incoming startTimeout {
"if (status==0){
status = ET_TIMER_RUNNING;
startTimeout_impl(time);
}
"
}
handle
outgoing timeout {
"
//TODO: clear active bit in case of single shot timer
if (status!=0){
if (status==ET_TIMER_RUNNING){
// single shot timer
status=0;
}
// msg to fsm
getActor()->receiveEvent(this, msg->getEvtId(), msg->getData());
}
"
}
handle
incoming kill {
"
if (status!=0){
status=0;
kill_impl();
}
"
}
}
}
ExternalType tcb -> "etTimerControlBlock"
ExternalType targetTime -> "etTime"
}
|
