da153354b2
Currently copystack adjusts pointers in the old stack and then copies the adjusted stack to the new stack. In addition to being generally confusing, this is going to make concurrent stack shrinking harder. Switch this around so that we first copy the stack and then adjust pointers on the new stack (never writing to the old stack). This reprises CL 15996, but takes a different and simpler approach. CL 15996 still walked the old stack while adjusting pointers on the new stack. In this CL, we adjust auxiliary structures before walking the stack, so we can just walk the new stack. For #12967. Change-Id: I94fa86f823ba9ee478e73b2ba509eed3361c43df Reviewed-on: https://go-review.googlesource.com/20033 Reviewed-by: Rick Hudson <rlh@golang.org> |
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