lukechilds/node - node - Gitea: Git with a cup of tea

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Commit Graph

Author	SHA1	Message	Date
Ben Noordhuis	8350f3a3a2	buffer: optimize Buffer#toString() Break up Buffer#toString() into a fast and slow path. The fast path optimizes for zero-length buffers and no-arg method invocation. The speedup for zero-length buffers is a satisfying 700%. The no-arg toString() operation gets faster by about 13% for a one-byte buffer. This change exploits the fact that most Buffer#toString() calls are plain no-arg method calls. Rewriting the method to take no arguments means a call doesn't go through an ArgumentsAdaptorTrampoline stack frame in the common case. PR-URL: https://github.com/nodejs/io.js/pull/2027 Reviewed-By: Brian White <mscdex@mscdex.net> Reviewed-By: Christian Tellnes <christian@tellnes.no> Reviewed-By: Daniel Cousens <email@dcousens.com> Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com> Reviewed-By: Trevor Norris <trev.norris@gmail.com>	10 years ago

Author

SHA1

Message

Date

Ben Noordhuis

8350f3a3a2

buffer: optimize Buffer#toString()

Break up Buffer#toString() into a fast and slow path.  The fast path
optimizes for zero-length buffers and no-arg method invocation.

The speedup for zero-length buffers is a satisfying 700%.  The no-arg
toString() operation gets faster by about 13% for a one-byte buffer.

This change exploits the fact that most Buffer#toString() calls are
plain no-arg method calls.  Rewriting the method to take no arguments
means a call doesn't go through an ArgumentsAdaptorTrampoline stack
frame in the common case.

PR-URL: https://github.com/nodejs/io.js/pull/2027
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Christian Tellnes <christian@tellnes.no>
Reviewed-By: Daniel Cousens <email@dcousens.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>

10 years ago

1 Commits (2d251e661a8c761e0c1bd809fdc6a29179950c00)