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TBR=austin
CC=golang-codereviews
https://codereview.appspot.com/179040044
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The conversion was done with an automated tool and then
modified only as necessary to make it compile and run.
[This CL is part of the removal of C code from package runtime.
See golang.org/s/dev.cc for an overview.]
LGTM=r
R=r
CC=austin, dvyukov, golang-codereviews, iant, khr
https://codereview.appspot.com/167540043
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The SudoG used to sit on the stack, so it was cheap to allocated
and didn't need to be cleaned up when finished.
For the conversion to Go, we had to move sudog off the stack
for a few reasons, so we added a cache of recently used sudogs
to keep allocation cheap. But we didn't add any of the necessary
cleanup before adding a SudoG to the new cache, and so the cached
SudoGs had stale pointers inside them that have caused all sorts
of awful, hard to debug problems.
CL 155760043 made sure SudoG.elem is cleaned up.
CL 150520043 made sure SudoG.selectdone is cleaned up.
This CL makes sure SudoG.next, SudoG.prev, and SudoG.waitlink
are cleaned up. I should have done this when I did the other two
fields; instead I wasted a week tracking down a leak they caused.
A dangling SudoG.waitlink can point into a sudogcache list that
has been "forgotten" in order to let the GC collect it, but that
dangling .waitlink keeps the list from being collected.
And then the list holding the SudoG with the dangling waitlink
can find itself in the same situation, and so on. We end up
with lists of lists of unusable SudoGs that are still linked into
the object graph and never collected (given the right mix of
non-trivial selects and non-channel synchronization).
More details in golang.org/issue/9110.
Fixes issue 9110.
LGTM=r
R=r
CC=dvyukov, golang-codereviews, iant, khr
https://codereview.appspot.com/177870043
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In channels, zeroing of gp.waiting is missed on a closed channel panic.
m.morebuf.g is not zeroed.
I don't expect the latter causes any problems, but just in case.
LGTM=iant
R=golang-codereviews, iant
CC=golang-codereviews
https://codereview.appspot.com/151610043
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This change was necessary on the dev.garbage branch
to keep the garbage collector from seeing pointers into
invalid heap areas.
On this default (Go 1.4) branch, the change removes
some possibility for memory leaks.
LGTM=khr
R=golang-codereviews, khr
CC=golang-codereviews, iant, r, rlh
https://codereview.appspot.com/155760043
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The C header files are the single point of truth:
every C enum constant Foo is available to Go as _Foo.
Remove or redirect duplicate Go declarations so they
cannot be out of sync.
Eventually we will need to put constants in Go, but for now having
them be out of sync with C is too risky. These predate the build
support for auto-generating Go constants from the C definitions.
LGTM=iant
R=iant
CC=golang-codereviews
https://codereview.appspot.com/141510043
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I assumed they were the same when I wrote
cgocallback.go earlier today. Merge them
to eliminate confusion.
I can't tell what gomallocgc did before with
a nil type but without FlagNoScan.
I created a call like that in cgocallback.go
this morning, translating from a C file.
It was supposed to do what the C version did,
namely treat the block conservatively.
Now it will.
LGTM=khr
R=khr
CC=golang-codereviews
https://codereview.appspot.com/141810043
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Preparation was in CL 134570043.
This CL contains only the effect of 'hg mv src/pkg/* src'.
For more about the move, see golang.org/s/go14nopkg.
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