| // Copyright Joyent, Inc. and other Node contributors. |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining a |
| // copy of this software and associated documentation files (the |
| // "Software"), to deal in the Software without restriction, including |
| // without limitation the rights to use, copy, modify, merge, publish, |
| // distribute, sublicense, and/or sell copies of the Software, and to permit |
| // persons to whom the Software is furnished to do so, subject to the |
| // following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included |
| // in all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN |
| // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
| // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| // USE OR OTHER DEALINGS IN THE SOFTWARE. |
| |
| 'use strict'; |
| // Flags: --expose_gc |
| |
| require('../common'); |
| const assert = require('assert'); |
| |
| const tmpdir = require('../common/tmpdir'); |
| |
| function newBuffer(size, value) { |
| const buffer = Buffer.allocUnsafe(size); |
| while (size--) { |
| buffer[size] = value; |
| } |
| buffer[buffer.length - 1] = 0x0a; |
| return buffer; |
| } |
| |
| const fs = require('fs'); |
| const testFileName = require('path').join(tmpdir.path, 'GH-814_testFile.txt'); |
| const testFileFD = fs.openSync(testFileName, 'w'); |
| console.log(testFileName); |
| |
| |
| const kBufSize = 128 * 1024; |
| let PASS = true; |
| const neverWrittenBuffer = newBuffer(kBufSize, 0x2e); // 0x2e === '.' |
| const bufPool = []; |
| |
| |
| const tail = require('child_process').spawn('tail', ['-f', testFileName]); |
| tail.stdout.on('data', tailCB); |
| |
| function tailCB(data) { |
| PASS = !data.toString().includes('.'); |
| } |
| |
| |
| const timeToQuit = Date.now() + 8e3; // Test during no more than this seconds. |
| (function main() { |
| |
| if (PASS) { |
| fs.write(testFileFD, newBuffer(kBufSize, 0x61), 0, kBufSize, -1, cb); |
| global.gc(); |
| const nuBuf = Buffer.allocUnsafe(kBufSize); |
| neverWrittenBuffer.copy(nuBuf); |
| if (bufPool.push(nuBuf) > 100) { |
| bufPool.length = 0; |
| } |
| } else { |
| throw new Error("Buffer GC'ed test -> FAIL"); |
| } |
| |
| if (Date.now() < timeToQuit) { |
| process.nextTick(main); |
| } else { |
| tail.kill(); |
| console.log("Buffer GC'ed test -> PASS (OK)"); |
| } |
| |
| })(); |
| |
| |
| function cb(err, written) { |
| assert.ifError(err); |
| } |