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feat: profiling setup

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This commit is contained in:
shirakaba
2022-12-17 17:46:31 +09:00
parent 2d0c3ff6a9
commit 40db84e653
3 changed files with 98 additions and 0 deletions
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12
apps/new/src/plugin-demos/properties.ts
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@@ -1,4 +1,5 @@
import { Button, EventData, Page, Switch, View, getViewById, Observable, Label, PropertyChangeData } from '@nativescript/core';
import { jamieProfiler } from '@nativescript/core/profiling/jamie';
export function navigatingTo(args: EventData) {
const page = <Page>args.object;
@@ -47,11 +48,22 @@ export class DemoModel extends Observable {
this.target.addEventListener(Observable.propertyChangeEvent, onPropertyChange, null);
jamieProfiler.flush();
console.log('BEGIN PROFILE');
const time = profile(() => {
for (let i = 0; i < 1000000; i++) {
this.target.setProperty(propName, i);
}
});
console.log('END PROFILE');
console.log(
jamieProfiler
.report(jamieProfiler.flush())
.map(([key, value]) => `${key}: ${value} ms`)
.join('\n')
);
this.target.removeEventListener(Observable.propertyChangeEvent, onPropertyChange, null);

49
apps/old/src/plugin-demos/properties.ts
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@@ -1,5 +1,43 @@
import { Button, EventData, Page, Switch, View, getViewById, Observable, Label, PropertyChangeData } from '@nativescript/core';
class Profiler {
private map: Record<string, number> = {};
profile<T>(key: string, action: () => T) {
const start = global.isIOS ? (global as any).performance.now() : __time();
const returnValue = action();
const stop = global.isIOS ? (global as any).performance.now() : __time();
const period = stop - start;
this.map[key] = (this.map[key] || 0) + period;
// console.log(`[PROFILE] ${key}: ${stop - start} ms`);
return returnValue;
}
flush() {
const map = this.map;
this.map = {};
return map;
}
get(key: string) {
return this.map[key];
}
report(map: Record<string, number> = this.map) {
return Object.entries(map).sort(([, valueA], [, valueB]) => {
return sortDescending(valueA, valueB);
});
}
}
function sortDescending(a: number, b: number): 1 | 0 | -1 {
return a < b ? 1 : a > b ? -1 : 0;
}
const jamieProfiler = new Profiler();
export function navigatingTo(args: EventData) {
const page = <Page>args.object;
@@ -47,11 +85,22 @@ export class DemoModel extends Observable {
this.target.addEventListener(Observable.propertyChangeEvent, onPropertyChange, null);
jamieProfiler.flush();
console.log('BEGIN PROFILE');
const time = profile(() => {
for (let i = 0; i < 1000000; i++) {
this.target.setProperty(propName, i);
}
});
console.log('END PROFILE');
console.log(
jamieProfiler
.report(jamieProfiler.flush())
.map(([key, value]) => `${key}: ${value} ms`)
.join('\n')
);
this.target.removeEventListener(Observable.propertyChangeEvent, onPropertyChange, null);

37
packages/core/profiling/jamie.ts Normal file
View File

@@ -0,0 +1,37 @@
class Profiler {
private map: Record<string, number> = {};
profile<T>(key: string, action: () => T) {
const start = global.isIOS ? (global as any).performance.now() : __time();
const returnValue = action();
const stop = global.isIOS ? (global as any).performance.now() : __time();
const period = stop - start;
this.map[key] = (this.map[key] || 0) + period;
// console.log(`[PROFILE] ${key}: ${stop - start} ms`);
return returnValue;
}
flush() {
const map = this.map;
this.map = {};
return map;
}
get(key: string) {
return this.map[key];
}
report(map: Record<string, number> = this.map) {
return Object.entries(map).sort(([, valueA], [, valueB]) => {
return sortDescending(valueA, valueB);
});
}
}
function sortDescending(a: number, b: number): 1 | 0 | -1 {
return a < b ? 1 : a > b ? -1 : 0;
}
export const jamieProfiler = new Profiler();