Jackson Tian 5396baf7c1 buffer: faster case for create Buffer from new Buffer(0) ...

When create Buffer from a Buffer will copy data
from old to new even though length is zero.

This patch can improve edge case 4x faster.
following is benchmark results.

new: buffers/buffer_zero.js n=1024: 2463.53891
old: buffers/buffer_zero.js n=1024: 618.70801

PR-URL: https://github.com/nodejs/node/pull/4326
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

2015-12-23 17:15:19 -08:00

..

internal

repl: Fixed node repl history edge case.

2015-12-22 13:29:28 -05:00

_debug_agent.js

lib: use const to define constants

2015-01-21 16:21:31 -05:00

_debugger.js

lib: use arrow functions instead of bind

2015-12-17 19:45:57 +09:00

_http_agent.js

http: remove excess calls to removeSocket

2015-12-21 16:11:57 -05:00

_http_client.js

http: do not emit upgrade on advertisement

2015-12-17 19:25:43 -05:00

_http_common.js

http: do not emit upgrade on advertisement

2015-12-17 19:25:43 -05:00

_http_incoming.js

http: do not allow multiple instances of certain response headers

2015-10-06 14:53:21 -07:00

_http_outgoing.js

http: Remove an unnecessary assignment

2015-12-17 08:35:59 -08:00

_http_server.js

http: fix pipeline regression

2015-12-04 14:42:13 +11:00

_linklist.js

lib,test: deprecate _linklist

2015-10-08 17:32:08 -07:00

_stream_duplex.js

node: allow multiple arguments passed to nextTick

2015-04-15 17:02:21 -06:00

_stream_passthrough.js

lib: use const to define constants

2015-01-21 16:21:31 -05:00

_stream_readable.js

stream: be less eager with readable flag

2015-12-03 21:59:44 -05:00

_stream_transform.js

lib: Consistent error messages in all modules

2015-11-09 20:08:36 +01:00

_stream_wrap.js

stream_wrap: error if stream has StringDecoder

2015-12-06 21:55:25 -05:00

_stream_writable.js

streams: update .readable/.writable to false

2015-12-02 12:56:48 -05:00

_tls_common.js

lib,src: ensure '(node:pid)' prefix for stdout logging

2015-12-03 12:24:38 -08:00

_tls_legacy.js

lib: use arrow functions instead of bind

2015-12-17 19:45:57 +09:00

_tls_wrap.js

lib: use arrow functions instead of bind

2015-12-17 19:45:57 +09:00

assert.js

assert: typed array deepequal performance fix

2015-12-21 18:04:01 +01:00

buffer.js

buffer: faster case for create Buffer from new Buffer(0)

2015-12-23 17:15:19 -08:00

child_process.js

child_process: add safety checks on stdio access

2015-11-12 17:52:09 -08:00

cluster.js

lib: use arrow functions instead of bind

2015-12-17 19:45:57 +09:00

console.js

console: delete timers that have ended

2015-11-13 11:36:45 -05:00

constants.js

Remove excessive copyright/license boilerplate

2015-01-12 15:30:28 -08:00

crypto.js

lib: Consistent error messages in all modules

2015-11-09 20:08:36 +01:00

dgram.js

udp: remove a needless instanceof Buffer check

2015-12-16 06:53:03 +01:00

dns.js

meta: remove use of profanity in source

2015-12-02 11:05:11 -08:00

domain.js

domains: fix handling of uncaught exceptions

2015-12-11 14:33:48 -08:00

events.js

lib,src: ensure '(node:pid)' prefix for stdout logging

2015-12-03 12:24:38 -08:00

fs.js

lib: use arrow functions instead of bind

2015-12-17 19:45:57 +09:00

http.js

lib,src: remove usage of events.EventEmitter

2015-09-23 00:23:08 +05:30

https.js

https: use servername in agent key

2015-12-22 13:51:12 -05:00

module.js

module: always decorate thrown errors

2015-12-19 14:15:38 -05:00

net.js

lib: use arrow functions instead of bind

2015-12-17 19:45:57 +09:00

os.js

util: prepend '(node) ' to deprecation messages

2015-07-03 16:32:29 +02:00

path.js

path: make format() consistent and more functional

2015-11-27 11:53:33 +00:00

process.js

src: remove excessive license boilerplate

2015-01-27 16:35:05 +11:00

punycode.js

lib: add missing new for errors lib/*.js

2015-03-24 12:42:15 -07:00

querystring.js

querystring: Parse multiple separator characters

2015-11-13 10:13:35 -08:00

readline.js

readline: deprecate undocumented exports

2015-11-19 17:01:25 -05:00

repl.js

repl: use String#repeat instead of Array#join

2015-12-21 10:54:01 -06:00

stream.js

lib,src: remove usage of events.EventEmitter

2015-09-23 00:23:08 +05:30

string_decoder.js

lib: don't use global Buffer

2015-06-11 20:24:44 +02:00

sys.js

util: introduce printDeprecationMessage function

2015-06-04 10:59:43 +03:00

timers.js

timers: optimize callback call: bind -> arrow

2015-12-02 11:14:28 -05:00

tls.js

tls: remove util and calls to util.format

2015-10-28 16:57:55 -07:00

tty.js

tty: Remove deprecated setRawMode wrapper

2015-11-18 13:16:02 -08:00

url.js

lib: Consistent error messages in all modules

2015-11-09 20:08:36 +01:00

util.js

util: use consistent Dates in inspect()

2015-12-16 22:15:18 -05:00

v8.js

src: add total_available_size to v8 statistics

2015-08-11 22:51:50 +02:00

vm.js

lib: reduce util.is*() usage

2015-01-31 23:47:29 -05:00

zlib.js

zlib: only apply drain listener if given callback

2015-11-14 08:11:28 -08:00