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const {
ObjectDefineProperties,
ObjectSetPrototypeOf,
SafeMap,
SafeSet,
SafeArrayIterator,
Symbol,
SymbolToStringTag,
ReflectConstruct,
} = primordials;
const { initPerformanceEntry, PerformanceEntry } = require('internal/perf/performance_entry');
const { now } = require('internal/perf/utils');
const { enqueue, bufferUserTiming } = require('internal/perf/observe');
const nodeTiming = require('internal/perf/nodetiming');
const {
validateNumber,
validateObject,
validateString,
validateInternalField,
} = require('internal/validators');
const {
codes: {
ERR_ILLEGAL_CONSTRUCTOR,
ERR_INVALID_ARG_VALUE,
ERR_MISSING_ARGS,
ERR_PERFORMANCE_INVALID_TIMESTAMP,
ERR_PERFORMANCE_MEASURE_INVALID_OPTIONS,
},
} = require('internal/errors');
const { structuredClone } = require('internal/structured_clone');
const {
kEmptyObject,
lazyDOMException,
kEnumerableProperty,
} = require('internal/util');
const kDetail = Symbol('kDetail');
const markTimings = new SafeMap();
const nodeTimingReadOnlyAttributes = new SafeSet(new SafeArrayIterator([
'nodeStart',
'v8Start',
'environment',
'loopStart',
'loopExit',
'bootstrapComplete',
]));
function getMark(name) {
if (name === undefined) return;
if (typeof name === 'number') {
if (name < 0)
throw new ERR_PERFORMANCE_INVALID_TIMESTAMP(name);
return name;
}
name = `${name}`;
if (nodeTimingReadOnlyAttributes.has(name))
return nodeTiming[name];
const ts = markTimings.get(name);
if (ts === undefined)
throw lazyDOMException(`The "${name}" performance mark has not been set`, 'SyntaxError');
return ts;
}
class PerformanceMark {
constructor(name, options = kEmptyObject) {
if (arguments.length === 0) {
throw new ERR_MISSING_ARGS('name');
}
name = `${name}`;
options ??= kEmptyObject;
if (nodeTimingReadOnlyAttributes.has(name))
throw new ERR_INVALID_ARG_VALUE('name', name);
validateObject(options, 'options');
const startTime = options.startTime ?? now();
validateNumber(startTime, 'startTime');
if (startTime < 0)
throw new ERR_PERFORMANCE_INVALID_TIMESTAMP(startTime);
markTimings.set(name, startTime);
let detail = options.detail;
detail = detail != null ?
structuredClone(detail) :
null;
initPerformanceEntry(this, name, 'mark', startTime, 0);
this[kDetail] = detail;
}
get detail() {
validateInternalField(this, kDetail, 'PerformanceMark');
return this[kDetail];
}
toJSON() {
return {
name: this.name,
entryType: this.entryType,
startTime: this.startTime,
duration: this.duration,
detail: this[kDetail],
};
}
}
ObjectSetPrototypeOf(PerformanceMark, PerformanceEntry);
ObjectSetPrototypeOf(PerformanceMark.prototype, PerformanceEntry.prototype);
ObjectDefineProperties(PerformanceMark.prototype, {
detail: kEnumerableProperty,
[SymbolToStringTag]: {
__proto__: null,
configurable: true,
value: 'PerformanceMark',
},
});
class PerformanceMeasure extends PerformanceEntry {
constructor() {
throw new ERR_ILLEGAL_CONSTRUCTOR();
}
get detail() {
validateInternalField(this, kDetail, 'PerformanceMeasure');
return this[kDetail];
}
}
ObjectDefineProperties(PerformanceMeasure.prototype, {
detail: kEnumerableProperty,
[SymbolToStringTag]: {
__proto__: null,
configurable: true,
value: 'PerformanceMeasure',
},
});
function createPerformanceMeasure(name, start, duration, detail) {
return ReflectConstruct(function PerformanceMeasure() {
initPerformanceEntry(this, name, 'measure', start, duration);
this[kDetail] = detail;
}, [], PerformanceMeasure);
}
function mark(name, options) {
const mark = new PerformanceMark(name, options);
enqueue(mark);
bufferUserTiming(mark);
return mark;
}
function calculateStartDuration(startOrMeasureOptions, endMark) {
startOrMeasureOptions ??= 0;
let start;
let end;
let duration;
let optionsValid = false;
if (typeof startOrMeasureOptions === 'object') {
({ start, end, duration } = startOrMeasureOptions);
optionsValid = start !== undefined || end !== undefined;
}
if (optionsValid) {
if (endMark !== undefined) {
throw new ERR_PERFORMANCE_MEASURE_INVALID_OPTIONS(
'endMark must not be specified');
}
if (start === undefined && end === undefined) {
throw new ERR_PERFORMANCE_MEASURE_INVALID_OPTIONS(
'One of options.start or options.end is required');
}
if (start !== undefined && end !== undefined && duration !== undefined) {
throw new ERR_PERFORMANCE_MEASURE_INVALID_OPTIONS(
'Must not have options.start, options.end, and ' +
'options.duration specified');
}
}
if (endMark !== undefined) {
end = getMark(endMark);
} else if (optionsValid && end !== undefined) {
end = getMark(end);
} else if (optionsValid && start !== undefined && duration !== undefined) {
end = getMark(start) + getMark(duration);
} else {
end = now();
}
if (typeof startOrMeasureOptions === 'string') {
start = getMark(startOrMeasureOptions);
} else if (optionsValid && start !== undefined) {
start = getMark(start);
} else if (optionsValid && duration !== undefined && end !== undefined) {
start = end - getMark(duration);
} else {
start = 0;
}
duration = end - start;
return { start, duration };
}
function measure(name, startOrMeasureOptions, endMark) {
validateString(name, 'name');
const {
start,
duration,
} = calculateStartDuration(startOrMeasureOptions, endMark);
let detail = startOrMeasureOptions?.detail;
detail = detail != null ? structuredClone(detail) : null;
const measure = createPerformanceMeasure(name, start, duration, detail);
enqueue(measure);
bufferUserTiming(measure);
return measure;
}
function clearMarkTimings(name) {
if (name !== undefined) {
name = `${name}`;
if (nodeTimingReadOnlyAttributes.has(name))
throw new ERR_INVALID_ARG_VALUE('name', name);
markTimings.delete(name);
return;
}
markTimings.clear();
}
module.exports = {
PerformanceMark,
PerformanceMeasure,
clearMarkTimings,
mark,
measure,
};
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