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426b4c6258
This vastly reduces the overhead of decodeStrings:false streams, such as net and http.
131 lines
3.6 KiB
JavaScript
131 lines
3.6 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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// Make sure that sync writes to stderr get processed before exiting.
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var common = require('../common.js');
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var assert = require('assert');
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function parent() {
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var spawn = require('child_process').spawn;
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var assert = require('assert');
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var i = 0;
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children.forEach(function(_, c) {
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var child = spawn(process.execPath, [__filename, '' + c]);
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var err = '';
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child.stderr.on('data', function(c) {
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err += c;
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});
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child.on('close', function() {
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assert.equal(err, 'child ' + c + '\nfoo\nbar\nbaz\n');
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console.log('ok %d child #%d', ++i, c);
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if (i === children.length)
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console.log('1..' + i);
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});
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});
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}
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function child0() {
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// Just a very simple wrapper around TTY(2)
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// Essentially the same as stderr, but without all the net stuff.
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var Writable = require('stream').Writable;
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var util = require('util');
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// a lowlevel stderr writer
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var TTY = process.binding('tty_wrap').TTY;
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var handle = new TTY(2, false);
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util.inherits(W, Writable);
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function W(opts) {
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Writable.call(this, opts);
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}
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W.prototype._write = function(chunk, encoding, cb) {
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var req = handle.writeUtf8String(chunk.toString() + '\n');
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// here's the problem.
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// it needs to tell the Writable machinery that it's ok to write
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// more, but that the current buffer length is handle.writeQueueSize
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req.oncomplete = afterWrite
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if (req.writeQueueSize === 0)
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req.cb = cb;
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else
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cb();
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}
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function afterWrite(status, handle, req) {
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if (req.cb)
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req.cb();
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}
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var w = new W
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w.write('child 0');
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w.write('foo');
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w.write('bar');
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w.write('baz');
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}
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// using console.error
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function child1() {
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console.error('child 1');
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console.error('foo');
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console.error('bar');
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console.error('baz');
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}
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// using process.stderr
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function child2() {
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process.stderr.write('child 2\n');
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process.stderr.write('foo\n');
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process.stderr.write('bar\n');
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process.stderr.write('baz\n');
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}
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// using a net socket
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function child3() {
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var net = require('net');
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var socket = new net.Socket({ fd: 2 });
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socket.write('child 3\n');
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socket.write('foo\n');
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socket.write('bar\n');
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socket.write('baz\n');
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}
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function child4() {
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console.error('child 4\nfoo\nbar\nbaz');
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}
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function child5() {
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process.stderr.write('child 5\nfoo\nbar\nbaz\n');
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}
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var children = [ child0, child1, child2, child3, child4, child5 ];
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if (!process.argv[2]) {
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parent();
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} else {
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children[process.argv[2]]();
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// immediate process.exit to kill any waiting stuff.
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process.exit();
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}
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