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function createPool(n){
var T, pool, idleThreads, q, poolObject, e, RUN, EMIT;
T = this;
n = Math.floor(n);
if (!(n > 0)) {
throw '.createPool( num ): number of threads must be a Number > 0';
}
pool = [];
idleThreads = [];
q = {
first: null,
last: null,
length: 0
};
poolObject = {
on: onEvent,
load: poolLoad,
destroy: destroy,
pendingJobs: getPendingJobs,
idleThreads: getIdleThreads,
totalThreads: getNumThreads,
any: {
eval: evalAny,
emit: emitAny
},
all: {
eval: evalAll,
emit: emitAll
}
};
try {
while (n--) {
pool[n] = idleThreads[n] = T.create();
}
} catch (e$) {
e = e$;
destroy('rudely');
throw e;
}
return poolObject;
RUN = 1;
EMIT = 2;
function poolLoad(path, cb){
var i;
i = pool.length;
while (i--) {
pool[i].load(path, cb);
}
}
function nextJob(t){
var job;
job = qPull();
if (job) {
if (job.type === RUN) {
t.eval(job.srcTextOrEventType, function(e, d){
var f;
nextJob(t);
f = job.cbOrData;
if (f) {
return job.cbOrData.call(t, e, d);
}
});
} else {
if (job.type === EMIT) {
t.emit(job.srcTextOrEventType, job.cbOrData);
nextJob(t);
}
}
} else {
idleThreads.push(t);
}
}
function qPush(srcTextOrEventType, cbOrData, type){
var job;
job = {
srcTextOrEventType: srcTextOrEventType,
cbOrData: cbOrData,
type: type,
next: null
};
if (q.last) {
q.last = q.last.next = job;
} else {
q.first = q.last = job;
}
q.length++;
}
function qPull(){
var job;
job = q.first;
if (job) {
if (q.last === job) {
q.first = q.last = null;
} else {
q.first = job.next;
}
q.length--;
}
return job;
}
function evalAny(src, cb){
qPush(src, cb, RUN);
if (idleThreads.length) {
nextJob(idleThreads.pop());
}
return poolObject;
}
function evalAll(src, cb){
pool.forEach(function(v, i, o){
return v.eval(src, cb);
});
return poolObject;
}
function emitAny(event, data){
qPush(event, data, EMIT);
if (idleThreads.length) {
nextJob(idleThreads.pop());
}
return poolObject;
}
function emitAll(event, data){
pool.forEach(function(v, i, o){
return v.emit(event, data);
});
return poolObject;
}
function onEvent(event, cb){
pool.forEach(function(v, i, o){
return v.on(event, cb);
});
return this;
}
function destroy(rudely){
var err, beNice, beRude;
err = function(){
throw 'This thread pool has been destroyed';
};
beNice = function(){
if (q.length) {
return setTimeout(beNice, 666);
} else {
return beRude();
}
};
beRude = function(){
q.length = 0;
q.first = null;
pool.forEach(function(v, i, o){
return v.destroy();
});
return poolObject.eval = poolObject.totalThreads = poolObject.idleThreads = poolObject.pendingJobs = poolObject.destroy = err;
};
if (rudely) {
beRude();
} else {
beNice();
}
}
function getNumThreads(){
return pool.length;
}
function getIdleThreads(){
return idleThreads.length;
}
function getPendingJobs(){
return q.length;
}
return getPendingJobs;
}
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