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Austin Clements 198440cc3d runtime: remove GODEBUG=gcrescanstacks=1 mode
Currently, setting GODEBUG=gcrescanstacks=1 enables a debugging mode
where the garbage collector re-scans goroutine stacks during mark
termination. This was introduced in Go 1.8 to debug the hybrid write
barrier, but I don't think we ever used it.

Now it's one of the last sources of mark work during mark termination.
This CL removes it.

Updates #26903. This is preparation for unifying STW GC and concurrent
GC.

Updates #17503.

Change-Id: I6ae04d3738aa9c448e6e206e21857a33ecd12acf
Reviewed-on: https://go-review.googlesource.com/c/134777
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rick Hudson <rlh@golang.org>
2018-10-02 20:35:27 +00:00
.github .github: use HTTPS for Stack Overflow link in SUPPORT.md 2018-06-12 11:08:14 +00:00
api os: add ModeCharDevice to ModeType 2018-09-13 09:52:57 +00:00
doc doc: document Go 1.11.1 2018-10-01 20:32:50 +00:00
lib/time lib/time: update vendored tzdata to release 2018e 2018-06-11 14:47:06 +00:00
misc misc/wasm: add mention of polyfill for Edge support 2018-10-02 17:25:11 +00:00
src runtime: remove GODEBUG=gcrescanstacks=1 mode 2018-10-02 20:35:27 +00:00
test cmd/compile: instrinsify math/bits.Mul on ppc64x 2018-10-02 18:56:06 +00:00
.gitattributes
.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
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README.md README: linkify some paths 2018-06-06 18:07:01 +00:00
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