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Austin Clements f54bcedce1 runtime: beginning of decentralized off->mark transition
This begins the conversion of the centralized GC coordinator to a
decentralized state machine by introducing the internal API that
triggers the first state transition from _GCoff to _GCmark (or
_GCmarktermination).

This change introduces the transition lock, the off->mark transition
condition (which is very similar to shouldtriggergc()), and the
general structure of a state transition. Since we're doing this
conversion in stages, it then falls back to the GC coordinator to
actually execute the cycle. We'll start moving logic out of the GC
coordinator and in to transition functions next.

This fixes a minor bug in gcstoptheworld debug mode where passing the
heap trigger once could trigger multiple STW GCs.

Updates #11970.

Change-Id: I964087dd190a639eb5766398f8e1bbf8b352902f
Reviewed-on: https://go-review.googlesource.com/16355
Reviewed-by: Rick Hudson <rlh@golang.org>
Run-TryBot: Austin Clements <austin@google.com>
2015-11-05 21:23:17 +00:00
api api: update next.txt 2015-10-12 23:00:00 +00:00
doc doc/go1.6.txt: mention possible GOTRACEBACK change 2015-10-30 18:43:53 +00:00
lib/time lib/time: update to IANA release 2015e. 2015-07-22 02:56:31 +00:00
misc misc/ios: keep whole buffer in go_darwin_arm_exec 2015-11-04 20:00:35 +00:00
src runtime: beginning of decentralized off->mark transition 2015-11-05 21:23:17 +00:00
test runtime: fix finalization and profiling of tiny allocations 2015-11-03 18:57:18 +00:00
.gitattributes .gitattributes: prevent all magic line ending changes 2014-12-12 23:14:54 +00:00
.gitignore .gitignore: ignore y.output 2015-06-10 00:28:52 +00:00
AUTHORS A+C: automated updates 2015-09-10 00:59:04 +00:00
CONTRIBUTING.md doc: suggest security@golang.org for reporting security issues 2015-06-26 09:53:36 +00:00
CONTRIBUTORS C: Add Brian Gitonga Marete's Google email address (Google CLA). 2015-10-09 15:21:30 +00:00
LICENSE
PATENTS
README.md readme: emphasize issue tracker is for bugs/proposals 2015-10-02 18:44:14 +00:00
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