buffers: speed up swap16/32, add swap64 by zbjornson · Pull Request #7157

buffers: speed up swap16/32, add swap64 by zbjornson · Pull Request #7157 · nodejs/node

added buffer

Issues and PRs related to the buffer subsystem.

c++

Issues and PRs that require attention from people who are familiar with C++.

labels

Jun 5, 2016

trevnorris pushed a commit that referenced this pull request

Jun 27, 2016

* Speed up buffer.swap16 and swap32 by using builtins. Up to ~6x gain.
  Drop transition point between JS and C++ implementations accordingly.
  Amount of performance improvement not only depends on buffer size but
  also memory alignment.
* Fix tests: C++ impl tests were testing 0-filled buffers so were
  always passing.
* Add similar buffer.swap64 method.
* Make buffer-swap benchmark mirror JS impl.

doc/api/buffer.markdown has an entry of "added: REPLACEME" that should
be changed to the correct release number before tagged.

Because node is currently using a very old version of cpplint.py it
doesn't know that std::swap() has moved from <algorithm> to <utility> in
c++11. So until cpplint.py is updated simply NOLINT the line.
Technically it should be NOLINT(build/include_what_you_use), but that
puts the line over 80 characters causing another lint error.

PR-URL: #7157
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

addaleax added the semver-minor

PRs that contain new features and should be released in the next minor version.

label

Jun 27, 2016

addaleax pushed a commit to addaleax/node that referenced this pull request

Jul 5, 2016

* Speed up buffer.swap16 and swap32 by using builtins. Up to ~6x gain.
  Drop transition point between JS and C++ implementations accordingly.
  Amount of performance improvement not only depends on buffer size but
  also memory alignment.
* Fix tests: C++ impl tests were testing 0-filled buffers so were
  always passing.
* Add similar buffer.swap64 method.
* Make buffer-swap benchmark mirror JS impl.

doc/api/buffer.markdown has an entry of "added: REPLACEME" that should
be changed to the correct release number before tagged.

Because node is currently using a very old version of cpplint.py it
doesn't know that std::swap() has moved from <algorithm> to <utility> in
c++11. So until cpplint.py is updated simply NOLINT the line.
Technically it should be NOLINT(build/include_what_you_use), but that
puts the line over 80 characters causing another lint error.

PR-URL: nodejs#7157
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Fishrock123 pushed a commit that referenced this pull request

Jul 5, 2016

* Speed up buffer.swap16 and swap32 by using builtins. Up to ~6x gain.
  Drop transition point between JS and C++ implementations accordingly.
  Amount of performance improvement not only depends on buffer size but
  also memory alignment.
* Fix tests: C++ impl tests were testing 0-filled buffers so were
  always passing.
* Add similar buffer.swap64 method.
* Make buffer-swap benchmark mirror JS impl.

doc/api/buffer.markdown has an entry of "added: REPLACEME" that should
be changed to the correct release number before tagged.

Because node is currently using a very old version of cpplint.py it
doesn't know that std::swap() has moved from <algorithm> to <utility> in
c++11. So until cpplint.py is updated simply NOLINT the line.
Technically it should be NOLINT(build/include_what_you_use), but that
puts the line over 80 characters causing another lint error.

PR-URL: #7157
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Backport-URL: #7546

Fishrock123 added a commit that referenced this pull request

Jul 6, 2016

Notable changes:

* buffer: Added `buffer.swap64()` to compliment `swap16()` &
`swap32()`. (Zach Bjornson) #7157
* build: New `configure` options have been added for building Node.js
as a shared library. (Stefan Budeanu)
#6994
  - The options are: `--shared`, `--without-v8-platform` &
`--without-bundled-v8`.
* crypto: Root certificates have been updated. (Ben Noordhuis)
#7363
* debugger: The server address is now configurable via
`--debug=<address>:<port>`. (Ben Noordhuis)
#3316
* npm: Upgraded npm to v3.10.3 (Kat Marchán)
#7515 & (Rebecca Turner)
#7410
* readline: Added the `prompt` option to the readline constructor.
(Evan Lucas) #7125
* repl / vm: `sigint`/`ctrl+c` will now break out of infinite loops
without stopping the Node.js instance. (Anna Henningsen)
#6635
* src:
  - Added a `node::FreeEnvironment` public C++ API. (Cheng Zhao)
#3098
  - Refactored `require('constants')`, constants are now available
directly from their respective modules. (James M Snell)
#6534
* stream: Improved `readable.read()` performance by up to 70%. (Brian
White) #7077
* timers: `setImmediate()` is now up to 150% faster in some situations.
(Andras) #6436
* util: Added a `breakLength` option to `util.inspect()` to control how
objects are formatted across lines. (cjihrig)
#7499
* v8-inspector: Experimental support has been added for debugging
Node.js over the inspector protocol. (Ali Ijaz Sheikh)
#6792
  - *Note: This feature is experimental, and it could be altered or
removed.*
  - You can try this feature by running Node.js with the `--inspect`
flag.

Refs: #7441
PR-URL: #7550

Fishrock123 added a commit that referenced this pull request

Jul 6, 2016

Notable changes:

* buffer: Added `buffer.swap64()` to compliment `swap16()` &
`swap32()`. (Zach Bjornson) #7157
* build: New `configure` options have been added for building Node.js
as a shared library. (Stefan Budeanu)
#6994
  - The options are: `--shared`, `--without-v8-platform` &
`--without-bundled-v8`.
* crypto: Root certificates have been updated. (Ben Noordhuis)
#7363
* debugger: The server address is now configurable via
`--debug=<address>:<port>`. (Ben Noordhuis)
#3316
* npm: Upgraded npm to v3.10.3 (Kat Marchán)
#7515 & (Rebecca Turner)
#7410
* readline: Added the `prompt` option to the readline constructor.
(Evan Lucas) #7125
* repl / vm: `sigint`/`ctrl+c` will now break out of infinite loops
without stopping the Node.js instance. (Anna Henningsen)
#6635
* src:
  - Added a `node::FreeEnvironment` public C++ API. (Cheng Zhao)
#3098
  - Refactored `require('constants')`, constants are now available
directly from their respective modules. (James M Snell)
#6534
* stream: Improved `readable.read()` performance by up to 70%. (Brian
White) #7077
* timers: `setImmediate()` is now up to 150% faster in some situations.
(Andras) #6436
* util: Added a `breakLength` option to `util.inspect()` to control how
objects are formatted across lines. (cjihrig)
#7499
* v8-inspector: Experimental support has been added for debugging
Node.js over the inspector protocol. (Ali Ijaz Sheikh)
#6792
  - *Note: This feature is experimental, and it could be altered or
removed.*
  - You can try this feature by running Node.js with the `--inspect`
flag.

Refs: #7441
PR-URL: #7550

Fishrock123 added a commit that referenced this pull request

Jul 6, 2016

Notable changes:

* buffer: Added `buffer.swap64()` to compliment `swap16()` &
`swap32()`. (Zach Bjornson) #7157
* build: New `configure` options have been added for building Node.js
as a shared library. (Stefan Budeanu)
#6994
  - The options are: `--shared`, `--without-v8-platform` &
`--without-bundled-v8`.
* crypto: Root certificates have been updated. (Ben Noordhuis)
#7363
* debugger: The server address is now configurable via
`--debug=<address>:<port>`. (Ben Noordhuis)
#3316
* npm: Upgraded npm to v3.10.3 (Kat Marchán)
#7515 & (Rebecca Turner)
#7410
* readline: Added the `prompt` option to the readline constructor.
(Evan Lucas) #7125
* repl / vm: `sigint`/`ctrl+c` will now break out of infinite loops
without stopping the Node.js instance. (Anna Henningsen)
#6635
* src:
  - Added a `node::FreeEnvironment` public C++ API. (Cheng Zhao)
#3098
  - Refactored `require('constants')`, constants are now available
directly from their respective modules. (James M Snell)
#6534
* stream: Improved `readable.read()` performance by up to 70%. (Brian
White) #7077
* timers: `setImmediate()` is now up to 150% faster in some situations.
(Andras) #6436
* util: Added a `breakLength` option to `util.inspect()` to control how
objects are formatted across lines. (cjihrig)
#7499
* v8-inspector: Experimental support has been added for debugging
Node.js over the inspector protocol. (Ali Ijaz Sheikh)
#6792
  - *Note: This feature is experimental, and it could be altered or
removed.*
  - You can try this feature by running Node.js with the `--inspect`
flag.

Refs: #7441
PR-URL: #7550

lukesampson pushed a commit to ScoopInstaller/Scoop that referenced this pull request

Jul 7, 2016

### Notable changes

* **buffer**: Added `buffer.swap64()` to compliment `swap16()` & `swap32()`. (Zach Bjornson) [#7157](nodejs/node#7157)
* **build**: New `configure` options have been added for building Node.js as a shared library. (Stefan Budeanu) [#6994](nodejs/node#6994)
  - The options are: `--shared`, `--without-v8-platform` & `--without-bundled-v8`.
* **crypto**: Root certificates have been updated. (Ben Noordhuis) [#7363](nodejs/node#7363)
* **debugger**: The server address is now configurable via `--debug=<address>:<port>`. (Ben Noordhuis) [#3316](nodejs/node#3316)
* **npm**: Upgraded npm to v3.10.3 (Kat Marchán) [#7515](nodejs/node#7515) & (Rebecca Turner) [#7410](nodejs/node#7410)
* **readline**: Added the `prompt` option to the readline constructor. (Evan Lucas) [#7125](nodejs/node#7125)
* **repl / vm**: `sigint`/`ctrl+c` will now break out of infinite loops without stopping the Node.js instance. (Anna Henningsen) [#6635](nodejs/node#6635)
* **src**:
  - Added a `node::FreeEnvironment` public C++ API. (Cheng Zhao) [#3098](nodejs/node#3098)
  - Refactored `require('constants')`, constants are now available directly from their respective modules. (James M Snell) [#6534](nodejs/node#6534)
* **stream**: Improved `readable.read()` performance by up to 70%. (Brian White) [#7077](nodejs/node#7077)
* **timers**: `setImmediate()` is now up to 150% faster in some situations. (Andras) [#6436](nodejs/node#6436)
* **util**: Added a `breakLength` option to `util.inspect()` to control how objects are formatted across lines. (cjihrig) [#7499](nodejs/node#7499)
* **v8-inspector**: Experimental support has been added for debugging Node.js over the inspector protocol. (Ali Ijaz Sheikh) [#6792](nodejs/node#6792)
  - **Note: This feature is _experimental_, and it could be altered or removed.**
  - You can try this feature by running Node.js with the `--inspect` flag.

bnoordhuis added a commit to bnoordhuis/io.js that referenced this pull request

Jul 11, 2016

fanatid added a commit to fanatid/buffer that referenced this pull request

Aug 6, 2016