'use strict'; // Flags: --expose_gc var common = require('../common'); var fs = require('fs'); var testFileName = require('path').join(common.tmpDir, 'GH-814_test.txt'); var testFD = fs.openSync(testFileName, 'w'); console.error(testFileName + '\n'); var tailProc = require('child_process').spawn('tail', ['-f', testFileName]); tailProc.stdout.on('data', tailCB); function tailCB(data) { PASS = data.toString().indexOf('.') < 0; if (PASS) { //console.error('i'); } else { console.error('[FAIL]\n DATA -> '); console.error(data); console.error('\n'); throw new Error('Buffers GC test -> FAIL'); } } var PASS = true; var bufPool = []; var kBufSize = 16 * 1024 * 1024; var neverWrittenBuffer = newBuffer(kBufSize, 0x2e); //0x2e === '.' var timeToQuit = Date.now() + 5e3; //Test should last no more than this. writer(); function writer() { if (PASS) { if (Date.now() > timeToQuit) { setTimeout(function() { process.kill(tailProc.pid); console.error('\nBuffers GC test -> PASS (OK)\n'); }, 555); } else { fs.write(testFD, newBuffer(kBufSize, 0x61), 0, kBufSize, -1, writerCB); gc(); gc(); gc(); gc(); gc(); gc(); var nuBuf = Buffer.allocUnsafe(kBufSize); neverWrittenBuffer.copy(nuBuf); if (bufPool.push(nuBuf) > 100) { bufPool.length = 0; } process.nextTick(writer); //console.error('o'); } } } function writerCB(err, written) { //console.error('cb.'); if (err) { throw err; } } // ******************* UTILITIES function newBuffer(size, value) { var buffer = Buffer.allocUnsafe(size); while (size--) { buffer[size] = value; } buffer[buffer.length - 1] = 0x0d; buffer[buffer.length - 1] = 0x0a; return buffer; }