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runtime: test that periodic GC works

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We've broken periodic GC a few times without noticing because there's
no test for it, partly because you have to wait two minutes to see if
it happens. This exposes control of the periodic GC timeout to runtime
tests and adds a test that cranks it down to zero and sleeps for a bit
to make sure periodic GCs happen.

Change-Id: I3ec44e967e99f4eda752f85c329eebd18b87709e
Reviewed-on: https://go-review.googlesource.com/13169
Reviewed-by: Rick Hudson <rlh@golang.org>
Run-TryBot: Austin Clements <austin@google.com>
This commit is contained in:
Austin Clements 2015-08-05 11:35:28 -04:00
parent 829cc349c5
commit e01be84149
3 changed files with 46 additions and 9 deletions
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2
src/runtime/export_test.go
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@ -155,3 +155,5 @@ const PtrSize = ptrSize
var TestingAssertE2I2GC = &testingAssertE2I2GC
var TestingAssertE2T2GC = &testingAssertE2T2GC
var ForceGCPeriod = &forcegcperiod