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const {
FunctionPrototypeBind,
ObjectDefineProperties,
MathCeil,
ReflectApply,
ReflectConstruct,
Symbol,
} = primordials;
const { InternalPerformanceEntry } = require('internal/perf/performance_entry');
const { now } = require('internal/perf/utils');
const {
validateFunction,
validateObject,
} = require('internal/validators');
const {
isHistogram
} = require('internal/histogram');
const {
isConstructor,
} = internalBinding('util');
const {
codes: {
ERR_INVALID_ARG_TYPE,
},
} = require('internal/errors');
const {
enqueue,
} = require('internal/perf/observe');
const kTimerified = Symbol('kTimerified');
function processComplete(name, start, args, histogram) {
const duration = now() - start;
if (histogram !== undefined)
histogram.record(MathCeil(duration * 1e6));
const entry =
new InternalPerformanceEntry(
name,
'function',
start,
duration,
args);
for (let n = 0; n < args.length; n++)
entry[n] = args[n];
enqueue(entry);
}
function timerify(fn, options = {}) {
validateFunction(fn, 'fn');
validateObject(options, 'options');
const {
histogram
} = options;
if (histogram !== undefined &&
(!isHistogram(histogram) || typeof histogram.record !== 'function')) {
throw new ERR_INVALID_ARG_TYPE(
'options.histogram',
'RecordableHistogram',
histogram);
}
if (fn[kTimerified]) return fn[kTimerified];
const constructor = isConstructor(fn);
function timerified(...args) {
const start = now();
const result = constructor ?
ReflectConstruct(fn, args, fn) :
ReflectApply(fn, this, args);
if (!constructor && typeof result?.finally === 'function') {
return result.finally(
FunctionPrototypeBind(
processComplete,
result,
fn.name,
start,
args,
histogram));
}
processComplete(fn.name, start, args, histogram);
return result;
}
ObjectDefineProperties(timerified, {
[kTimerified]: {
configurable: false,
enumerable: false,
value: timerified,
},
length: {
configurable: false,
enumerable: true,
value: fn.length,
},
name: {
configurable: false,
enumerable: true,
value: `timerified ${fn.name}`
}
});
ObjectDefineProperties(fn, {
[kTimerified]: {
configurable: false,
enumerable: false,
value: timerified,
}
});
return timerified;
}
module.exports = timerify;
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