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Michael Anthony Knyszek d1798d5aa0 runtime: manage a pool of spanSetBlocks and free them eagerly
This change adds a global pool of spanSetBlocks to the spanSet data
structure and adds support for eagerly freeing these blocks back to the
pool if the block goes empty.

This change prepares us to use this data structure in more places in the
runtime by allowing reuse of spanSetBlock.

Updates #37487.

Change-Id: I0752226e3667a9e3e1d87c9b66edaedeae1ac23f
Reviewed-on: https://go-review.googlesource.com/c/go/+/221180
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
2020-04-27 17:50:41 +00:00
.github .github: add link to questions in ISSUE_TEMPLATE 2020-01-06 17:05:31 +00:00
api all: remove scattered remnants of darwin/386 2020-04-08 18:37:38 +00:00
doc os, net: define and use os.ErrDeadlineExceeded 2020-04-25 00:26:48 +00:00
lib/time time/tzdata: new package 2020-04-14 19:34:31 +00:00
misc cmd/cgo: use consistent tag for a particular struct 2020-04-14 18:59:37 +00:00
src runtime: manage a pool of spanSetBlocks and free them eagerly 2020-04-27 17:50:41 +00:00
test cmd/compile: optimize Move with all-zero ro sym src to Zero 2020-04-24 23:58:10 +00:00
.gitattributes build: force all Windows batch files to CRLF 2020-03-22 08:42:38 +00:00
.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
AUTHORS A: Qais Patankar (individual CLA) 2020-04-25 23:01:43 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS A+C: add Andy Pan (individual CLA) 2020-04-05 22:58:00 +00:00
favicon.ico website: recreate 16px and 32px favicon 2016-08-25 15:43:32 +00:00
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README.md README: linkify some paths 2018-06-06 18:07:01 +00:00
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SECURITY.md SECURITY.md: update go versions 2019-09-26 15:34:57 +00:00

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