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runtime: GC precision tests #6097

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dvyukov opened this issue Aug 10, 2013 · 8 comments
Closed

runtime: GC precision tests #6097

dvyukov opened this issue Aug 10, 2013 · 8 comments
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@dvyukov
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dvyukov commented Aug 10, 2013 

Since we are actively working on precise GC with the goal of 100% precision. It's a good
idea to have some GC precision tests. E.g. allocate a heap block, set finalizer for it,
cast the pointer to uintptr, spray the value to locals/arguments/globals/heap/etc, call
GC, ensure that the block is still collected. Later when we discover/fix new corner
cases, we will be able to test them as well.
@dvyukov
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dvyukov commented Aug 10, 2013

Comment 1:

While I remember, one place where we are conservative is arguments/locals of assembly
functions.

@lexprfuncall
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Comment 2:

This is a good idea.  I have tests like the one you describe for use with the liveness
analysis that I will incorporate in the test suite when that is checked in.  I also have
a debugging mode that aggressively verifies the correctness of the maps on ordinary code.

@rsc
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rsc commented Sep 9, 2013

Comment 3:

No longer for Go 1.2, because precision didn't make it in.

Labels changed: removed go1.2maybe.

@rsc
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rsc commented Nov 27, 2013

Comment 4:

Labels changed: added go1.3maybe.

@rsc
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rsc commented Dec 4, 2013

Comment 5:

Labels changed: added release-none, removed go1.3maybe.

@rsc
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rsc commented Dec 4, 2013

Comment 6:

Labels changed: added repo-main.

@rsc
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rsc commented Mar 4, 2014

Comment 7:

Owner changed to @rsc.

@rsc rsc added this to the Unplanned milestone Apr 10, 2015
@dvyukov
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dvyukov commented Jun 26, 2017

obsolete

@dvyukov dvyukov closed this as completed Jun 26, 2017
@golang golang locked and limited conversation to collaborators Jun 26, 2018
@rsc rsc removed their assignment Jun 22, 2022
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