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The Go programming language
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Austin Clements 70d7e96c78 runtime: avoid tracking spans with no objects with mcentral 
Lazy mcache flushing (golang.org/cl/134783) made it so that moving a
span from an mcache to an mcentral was sometimes responsible for
sweeping the span. However, it did a "preserving" sweep, which meant
it retained ownership, even if the sweeper swept all objects in the
span. As a result, we could put a completely unused span back in the
mcentral.

Fix this by first taking back ownership of the span into the mcentral
and moving it to the right mcentral list, and then doing a
non-preserving sweep. The non-preserving sweep will move the span to
the heap if it sweeps all objects.

Change-Id: I244b1893b44b8c00264f0928ac9239449775f617
Reviewed-on: https://go-review.googlesource.com/c/140597
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
 		2018-10-09 18:20:13 +00:00
.github .github: use HTTPS for Stack Overflow link in SUPPORT.md 2018-06-12 11:08:14 +00:00
api syscall: FreeBSD 12 ino64 support 2018-10-05 21:38:13 +00:00
doc spec: distinguish between explicit and implicit conversions (clarification) 2018-10-08 17:47:49 +00:00
lib/time lib/time: update vendored tzdata to release 2018e 2018-06-11 14:47:06 +00:00
misc misc/wasm: fix fs operations in browser 2018-10-08 18:33:23 +00:00
src runtime: avoid tracking spans with no objects with mcentral 2018-10-09 18:20:13 +00:00
test cmd/compile: add indexed form for several 386 instructions 2018-10-09 03:55:08 +00:00
.gitattributes
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.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A+C: add VMware as author, Venil Noronha as contributor 2018-08-31 02:14:24 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS A+C: add VMware as author, Venil Noronha as contributor 2018-08-31 02:14:24 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
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README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image 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.

Download and Install

Binary Distributions

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.

Install From Source

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.

Contributing

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.