| const privateCpuProfileName = process.env.__NEXT_PRIVATE_CPU_PROFILE | |
| const isCpuProfileEnabled = process.env.NEXT_CPU_PROF || privateCpuProfileName | |
| if (isCpuProfileEnabled) { | |
| const { Session } = require('inspector') as typeof import('inspector') | |
| const fs = require('fs') as typeof import('fs') | |
| const session = new Session() | |
| session.connect() | |
| session.post('Profiler.enable') | |
| session.post('Profiler.start') | |
| function saveProfile() { | |
| session.post('Profiler.stop', (error, param) => { | |
| if (error) { | |
| console.error('Cannot generate CPU profiling:', error) | |
| return | |
| } | |
| // Write profile to disk | |
| const filename = `${ | |
| privateCpuProfileName || 'CPU.main' | |
| }.${Date.now()}.cpuprofile` | |
| fs.writeFileSync(`./${filename}`, JSON.stringify(param.profile)) | |
| process.exit(0) | |
| }) | |
| } | |
| process.on('SIGINT', saveProfile) | |
| process.on('SIGTERM', saveProfile) | |
| process.on('exit', saveProfile) | |
| } | |