PRT_TYPE * PRT_CALL_CONV PrtCloneType(_In_ PRT_TYPE *type)
{
PrtAssert(PrtIsValidType(type), "Invalid type expression");
PRT_TYPE_KIND kind = type->typeKind;
switch (kind)
{
case PRT_KIND_ANY:
case PRT_KIND_BOOL:
case PRT_KIND_EVENT:
case PRT_KIND_MACHINE:
case PRT_KIND_INT:
case PRT_KIND_NULL:
{
return PrtMkPrimitiveType(kind);
}
case PRT_KIND_FORGN:
{
return PrtMkForeignType(type->typeUnion.typeTag);
}
case PRT_KIND_MAP:
{
PRT_MAPTYPE *mtype = type->typeUnion.map;
return PrtMkMapType(mtype->domType, mtype->codType);
}
case PRT_KIND_NMDTUP:
{
PRT_UINT32 i;
PRT_NMDTUPTYPE *ntype = type->typeUnion.nmTuple;
PRT_TYPE *clone = PrtMkNmdTupType(ntype->arity);
for (i = 0; i < ntype->arity; ++i)
{
PrtSetFieldName(clone, i, ntype->fieldNames[i]);
PrtSetFieldType(clone, i, ntype->fieldTypes[i]);
}
return clone;
}
case PRT_KIND_SEQ:
{
PRT_SEQTYPE *stype = type->typeUnion.seq;
return PrtMkSeqType(stype->innerType);
}
case PRT_KIND_TUPLE:
{
PRT_UINT32 i;
PRT_TUPTYPE *ttype = type->typeUnion.tuple;
PRT_TYPE *clone = PrtMkTupType(ttype->arity);
for (i = 0; i < ttype->arity; ++i)
{
PrtSetFieldType(clone, i, ttype->fieldTypes[i]);
}
return clone;
}
default:
PrtAssert(PRT_FALSE, "PrtCloneType: Invalid type");
return PrtMkPrimitiveType(PRT_KIND_NULL);
}
}
PRT_MACHINEINST_PRIV *
PrtMkMachinePrivate(
_Inout_ PRT_PROCESS_PRIV *process,
_In_ PRT_UINT32 instanceOf,
_In_ PRT_VALUE *payload
)
{
PRT_UINT32 packSize;
PRT_UINT32 nVars;
PRT_UINT8 eQSize;
PRT_MACHINEINST_PRIV *context;
PRT_UINT32 i;
PrtLockMutex(process->processLock);
nVars = process->program->machines[instanceOf].nVars;
eQSize = PRT_QUEUE_LEN_DEFAULT;
//
// Allocate memory for state machine context
//
context = (PRT_MACHINEINST_PRIV*)PrtMalloc(sizeof(PRT_MACHINEINST_PRIV));
//
// Add it to the array of machines in the process
//
PRT_UINT32 numMachines = process->numMachines;
PRT_UINT32 machineCount = process->machineCount;
PRT_MACHINEINST **machines = process->machines;
if (machineCount == 0)
{
machines = (PRT_MACHINEINST **)PrtCalloc(1, sizeof(PRT_MACHINEINST *));
process->machines = machines;
process->machineCount = 1;
}
else if (machineCount == numMachines) {
PRT_MACHINEINST **newMachines = (PRT_MACHINEINST **)PrtCalloc(2 * machineCount, sizeof(PRT_MACHINEINST *));
for (PRT_UINT32 i = 0; i < machineCount; i++)
{
newMachines[i] = machines[i];
}
PrtFree(machines);
machines = newMachines;
process->machines = newMachines;
process->machineCount = 2 * machineCount;
}
machines[numMachines] = (PRT_MACHINEINST *)context;
process->numMachines++;
//
// Initialize Machine Identity
//
context->process = (PRT_PROCESS *)process;
context->instanceOf = instanceOf;
PRT_MACHINEID id;
id.machineId = process->numMachines; // index begins with 1 since 0 is reserved
id.processId = process->guid;
context->id = PrtMkMachineValue(id);
context->extContext = NULL;
context->isModel = PRT_FALSE;
//
// Initialize the map used in PrtDist, map from sender to the last seqnumber received
//
PRT_TYPE *domType = PrtMkPrimitiveType(PRT_KIND_MACHINE);
PRT_TYPE *codType = PrtMkPrimitiveType(PRT_KIND_INT);
PRT_TYPE *recvMapType = PrtMkMapType(domType, codType);
context->recvMap = PrtMkDefaultValue(recvMapType);
PrtFreeType(domType);
PrtFreeType(codType);
PrtFreeType(recvMapType);
// Initialize Machine Internal Variables
//
context->currentState = process->program->machines[context->instanceOf].initStateIndex;
context->isRunning = PRT_FALSE;
context->isHalted = PRT_FALSE;
context->lastOperation = ReturnStatement;
context->currentTrigger = PrtMkEventValue(PRT_SPECIAL_EVENT_NULL);
context->currentPayload = PrtCloneValue(payload);
//
// Allocate memory for local variables and initialize them
//
context->varValues = NULL;
if (nVars > 0)
{
context->varValues = PrtCalloc(nVars, sizeof(PRT_VALUE*));
for (i = 0; i < nVars; i++)
{
context->varValues[i] = PrtMkDefaultValue(process->program->machines[instanceOf].vars[i].type);
}
}
context->receive = NULL;
//
// Initialize various stacks
//
context->callStack.length = 0;
context->funStack.length = 0;
//
// Initialize event queue
//
context->eventQueue.eventsSize = eQSize;
context->eventQueue.events = (PRT_EVENT*)PrtCalloc(eQSize, sizeof(PRT_EVENT));
context->eventQueue.headIndex = 0;
context->eventQueue.tailIndex = 0;
context->eventQueue.size = 0;
packSize = PrtGetPackSize(context);
//
// Initialize Inherited Deferred Set
//
context->inheritedDeferredSetCompact = (PRT_UINT32*)PrtCalloc(packSize, sizeof(PRT_UINT32));
//
// Initialize the current deferred set
//
context->currentDeferredSetCompact = (PRT_UINT32*)PrtCalloc(packSize, sizeof(PRT_UINT32));
//
// Initialize actions
//
context->inheritedActionSetCompact = (PRT_UINT32*)PrtCalloc(packSize, sizeof(PRT_UINT32));
context->currentActionSetCompact = (PRT_UINT32*)PrtCalloc(packSize, sizeof(PRT_UINT32));
//
//Initialize state machine lock
//
context->stateMachineLock = PrtCreateMutex();
//
//Log
//
PrtLog(PRT_STEP_CREATE, context);
//
// Allocate external context Structure
//
process->program->machines[context->instanceOf].extCtorFun((PRT_MACHINEINST *)context, payload);
PrtUnlockMutex(process->processLock);
//
// Run the state machine
//
PrtLockMutex(context->stateMachineLock);
PrtRunStateMachine(context, PRT_FALSE);
return context;
}
