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Revert "cmd/compile,runtime: allocate defer records on the stack"

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This reverts commit fff4f599fe.

Reason for revert: Seems to still have issues around GC.

Fixes #32452

Change-Id: Ibe7af629f9ad6a3d5312acd7b066123f484da7f0
Reviewed-on: https://go-review.googlesource.com/c/go/+/180761
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
This commit is contained in:
Keith Randall 2019-06-05 18:42:31 +00:00
parent e9a136d185
commit 49200e3f3e
15 changed files with 109 additions and 329 deletions
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13
src/runtime/stack.go
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@ -719,21 +719,16 @@ func adjustctxt(gp *g, adjinfo *adjustinfo) {
}
func adjustdefers(gp *g, adjinfo *adjustinfo) {
// Adjust defer argument blocks the same way we adjust active stack frames.
tracebackdefers(gp, adjustframe, noescape(unsafe.Pointer(adjinfo)))
// Adjust pointers in the Defer structs.
// We need to do this first because we need to adjust the
// defer.link fields so we always work on the new stack.
adjustpointer(adjinfo, unsafe.Pointer(&gp._defer))
// Defer structs themselves are never on the stack.
for d := gp._defer; d != nil; d = d.link {
adjustpointer(adjinfo, unsafe.Pointer(&d.fn))
adjustpointer(adjinfo, unsafe.Pointer(&d.sp))
adjustpointer(adjinfo, unsafe.Pointer(&d._panic))
adjustpointer(adjinfo, unsafe.Pointer(&d.link))
}
// Adjust defer argument blocks the same way we adjust active stack frames.
// Note: this code is after the loop above, so that if a defer record is
// stack allocated, we work on the copy in the new stack.
tracebackdefers(gp, adjustframe, noescape(unsafe.Pointer(adjinfo)))
}
func adjustpanics(gp *g, adjinfo *adjustinfo) {