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'use strict';
// Flags: --expose_gc
const common = require('../common');
const assert = require('assert');
const tick = require('../common/tick');
const { createHook, AsyncResource } = require('async_hooks');
// Test priority of destroy hook relative to nextTick,... and
// verify a microtask is scheduled in case a lot items are queued
const resType = 'MyResource';
let activeId = -1;
createHook({
init(id, type) {
if (type === resType) {
assert.strictEqual(activeId, -1);
activeId = id;
}
},
destroy(id) {
if (activeId === id) {
activeId = -1;
}
},
}).enable();
function testNextTick() {
assert.strictEqual(activeId, -1);
const res = new AsyncResource(resType);
assert.strictEqual(activeId, res.asyncId());
res.emitDestroy();
// nextTick has higher prio than emit destroy
process.nextTick(common.mustCall(() =>
assert.strictEqual(activeId, res.asyncId())),
);
}
function testQueueMicrotask() {
assert.strictEqual(activeId, -1);
const res = new AsyncResource(resType);
assert.strictEqual(activeId, res.asyncId());
res.emitDestroy();
// queueMicrotask has higher prio than emit destroy
queueMicrotask(common.mustCall(() =>
assert.strictEqual(activeId, res.asyncId())),
);
}
function testImmediate() {
assert.strictEqual(activeId, -1);
const res = new AsyncResource(resType);
assert.strictEqual(activeId, res.asyncId());
res.emitDestroy();
setImmediate(common.mustCall(() =>
assert.strictEqual(activeId, -1)),
);
}
function testPromise() {
assert.strictEqual(activeId, -1);
const res = new AsyncResource(resType);
assert.strictEqual(activeId, res.asyncId());
res.emitDestroy();
// Promise has higher prio than emit destroy
Promise.resolve().then(common.mustCall(() =>
assert.strictEqual(activeId, res.asyncId())),
);
}
async function testAwait() {
assert.strictEqual(activeId, -1);
const res = new AsyncResource(resType);
assert.strictEqual(activeId, res.asyncId());
res.emitDestroy();
for (let i = 0; i < 5000; i++) {
await Promise.resolve();
}
global.gc();
await Promise.resolve();
// Limit to trigger a microtask not yet reached
assert.strictEqual(activeId, res.asyncId());
for (let i = 0; i < 5000; i++) {
await Promise.resolve();
}
global.gc();
await Promise.resolve();
assert.strictEqual(activeId, -1);
}
testNextTick();
tick(2, testQueueMicrotask);
tick(4, testImmediate);
tick(6, testPromise);
tick(8, () => testAwait().then(common.mustCall()));
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