/*
* function preload(path: Path): String
* NOTE: this blocks.
*/
static EjsVar *workerPreload(Ejs *ejs, EjsWorker *worker, int argc, EjsVar **argv)
{
Ejs *inside;
EjsWorker *insideWorker;
EjsVar *result;
mprAssert(argc > 0 && ejsIsPath(argv[0]));
mprAssert(!worker->inside);
if (worker->state > EJS_WORKER_BEGIN) {
ejsThrowStateError(ejs, "Worker has already started");
return 0;
}
insideWorker = worker->pair;
inside = insideWorker->ejs;
loadFile(worker->pair, ((EjsPath*) argv[0])->path);
if (inside->exception) {
handleError(ejs, worker, inside->exception);
return 0;
}
result = ejsSerialize(ejs, inside->result, -1, 0, 0);
if (result == 0) {
return ejs->nullValue;
}
return ejsDeserialize(ejs, (EjsString*) result);
}
/*
* Post a message to this worker. Note: the worker is the destination worker which may be the parent.
*
* function postMessage(data: Object, ports: Array = null): Void
*/
static EjsVar *workerPostMessage(Ejs *ejs, EjsWorker *worker, int argc, EjsVar **argv)
{
EjsVar *data;
EjsWorker *target;
MprDispatcher *dispatcher;
Message *msg;
if (worker->state >= EJS_WORKER_CLOSED) {
ejsThrowStateError(ejs, "Worker has completed");
return 0;
}
/*
* Create the event with serialized data in the originating interpreter. It owns the data.
*/
if ((data = ejsSerialize(ejs, argv[0], -1, 0, 0)) == 0) {
ejsThrowArgError(ejs, "Can't serialize message data");
return 0;
}
if ((msg = mprAllocObjZeroed(ejs, Message)) == 0) {
ejsThrowMemoryError(ejs);
return 0;
}
target = worker->pair;
msg->data = mprStrdup(target->ejs, ejsGetString(data));
msg->worker = target;
msg->callback = "onmessage";
msg->callbackSlot = ES_ejs_sys_Worker_onmessage;
dispatcher = target->ejs->dispatcher;
mprCreateEvent(dispatcher, (MprEventProc) doMessage, 0, MPR_NORMAL_PRIORITY, msg, 0);
mprSignalCond(dispatcher->cond);
return 0;
}
/*
Interpret from the console or from a literal command
*/
static int interpretCommands(EcCompiler *cp, cchar *cmd)
{
Ejs *ejs;
EjsString *result;
char *tmpArgv[1];
int err;
ejs = cp->ejs;
cp->interactive = 1;
if (ecOpenConsoleStream(cp, (cmd) ? commandGets: consoleGets, cmd) < 0) {
mprError("Cannot open input");
return EJS_ERR;
}
tmpArgv[0] = EC_INPUT_STREAM;
while (!cp->stream->eof && !mprIsStopping()) {
err = 0;
cp->uid = 0;
ejs->result = ESV(undefined);
if (ecCompile(cp, 1, tmpArgv) < 0) {
mprRawLog(0, "%s", cp->errorMsg);
ejs->result = ESV(undefined);
err++;
}
if (!err && cp->errorCount == 0) {
if (ejsRunProgram(ejs, NULL, NULL) < 0) {
ejsReportError(ejs, "Error in script");
}
}
if (!ejs->exception && ejs->result != ESV(undefined)) {
if (ejsIs(ejs, ejs->result, Date) /* MOB || ejsIsType(ejs, ejs->result) */) {
if ((result = (EjsString*) ejsToString(ejs, ejs->result)) != 0) {
mprPrintf("%@\n", result);
}
} else if (ejs->result != ESV(null)) {
if ((result = (EjsString*) ejsSerialize(ejs, ejs->result, EJS_JSON_SHOW_PRETTY)) != 0) {
mprPrintf("%@\n", result);
}
}
}
ecResetInput(cp);
cp->errorCount = 0;
cp->fatalError = 0;
}
ecCloseStream(cp);
return 0;
}
/*
WARNING: the inside interpreter owns the exception object. Must fully extract all fields
*/
static void handleError(Ejs *ejs, EjsWorker *worker, EjsObj *exception, int throwOutside)
{
Ejs *inside;
EjsObj *e;
MprDispatcher *dispatcher;
Message *msg;
assert(!worker->inside);
assert(exception);
assert(ejs == worker->ejs);
ejsBlockGC(ejs);
if ((msg = createMessage()) == 0) {
ejsThrowMemoryError(ejs);
return;
}
msg->worker = worker;
msg->callback = "onerror";
msg->callbackSlot = ES_Worker_onerror;
inside = worker->pair->ejs;
inside->exception = 0;
e = ejsDeserialize(ejs, ejsSerialize(inside, exception, 0));
inside->exception = exception;
/*
Inside interpreter owns the exception object, so must fully extract all exception.
Allocate into the outside worker's interpreter.
*/
if (ejsIsError(inside, exception)) {
msg->message = ejsGetPropertyByName(ejs, e, EN("message"));
msg->stack = ejsGetPropertyByName(ejs, e, EN("stack"));
} else {
msg->message = e;
msg->stack = 0;
}
if (throwOutside) {
if (msg->stack) {
ejsThrowStateError(ejs, "%@\n%@", ejsToString(ejs, msg->message), ejsToString(ejs, msg->stack));
} else {
ejsThrowStateError(ejs, "%@", ejsToString(ejs, msg->message));
}
}
dispatcher = ejs->dispatcher;
mprCreateEvent(dispatcher, "doMessage-error", 0, (MprEventProc) doMessage, msg, 0);
}
/*
* Start a worker thread. This is called by eval() and load(). Not by preload() or by Worker()
* It always joins.
*/
static EjsVar *startWorker(Ejs *ejs, EjsWorker *worker, int timeout)
{
Ejs *inside;
EjsVar *result;
mprAssert(ejs);
mprAssert(worker);
mprAssert(worker->state == EJS_WORKER_BEGIN);
if (worker->state > EJS_WORKER_BEGIN) {
ejsThrowStateError(ejs, "Worker has already started");
return 0;
}
mprAssert(worker->pair->state == EJS_WORKER_BEGIN);
addWorker(ejs, worker);
worker->state = EJS_WORKER_STARTED;
worker->obj.var.permanent = 1;
if (mprStartWorker(ejs, (MprWorkerProc) workerMain, (void*) worker, MPR_NORMAL_PRIORITY) < 0) {
ejsThrowStateError(ejs, "Can't start worker");
worker->obj.var.permanent = 0;
return 0;
}
if (timeout == 0) {
return ejs->undefinedValue;
}
if (timeout < 0) {
timeout = MAXINT;
}
if (join(ejs, (EjsVar*) worker, timeout) < 0) {
ejsThrowStateError(ejs, "Timeout (%d)", timeout);
return ejs->undefinedValue;
}
mprAssert(worker->pair);
mprAssert(worker->pair->ejs);
inside = worker->pair->ejs;
result = ejsSerialize(ejs, inside->result, -1, 0, 0);
if (result == 0) {
return ejs->nullValue;
}
return ejsDeserialize(ejs, (EjsString*) result);
}
