| commit | a762221bea7c02a17cffc6937d8af33a027a32e5 | [log] [tgz] |
|---|---|---|
| author | Michael Anthony Knyszek <mknyszek@google.com> | Wed Sep 18 15:44:11 2019 +0000 |
| committer | Michael Knyszek <mknyszek@google.com> | Fri Nov 08 17:01:18 2019 +0000 |
| tree | 8ed1ad5dfad0dd428571ade56dff15fbf1c179f4 | |
| parent | a5a6f61043dcd8fe9c9ccd4b9ddef0c40fe1105f [diff] |
runtime: rearrange mheap_.alloc* into allocSpan This change combines the functionality of allocSpanLocked, allocManual, and alloc_m into a new method called allocSpan. While these methods' abstraction boundaries are OK when the heap lock is held throughout, they start to break down when we want finer-grained locking in the page allocator. allocSpan does just that, and only locks the heap when it absolutely has to. Piggy-backing off of work in previous CLs to make more of span initialization lockless, this change makes span initialization entirely lockless as part of the reorganization. Ultimately this change will enable us to add a lockless fast path to allocSpan. Updates #35112. Change-Id: I99875939d75fb4e958a67ac99e4a7cda44f06864 Reviewed-on: https://go-review.googlesource.com/c/go/+/196641 Run-TryBot: Michael Knyszek <mknyszek@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com>
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.
Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.
Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.
Official binary distributions are available at https://golang.org/dl/.
After downloading a binary release, visit https://golang.org/doc/install or load doc/install.html in your web browser for installation instructions.
If a binary distribution is not available for your combination of operating system and architecture, visit https://golang.org/doc/install/source or load doc/install-source.html in your web browser for source installation instructions.
Go is the work of thousands of contributors. We appreciate your help!
To contribute, please read the contribution guidelines: https://golang.org/doc/contribute.html
Note that the Go project uses the issue tracker for bug reports and proposals only. See https://golang.org/wiki/Questions for a list of places to ask questions about the Go language.