diff options
| author | Cherry Mui <cherryyz@google.com> | 2021-06-08 18:45:18 -0400 |
|---|---|---|
| committer | Cherry Mui <cherryyz@google.com> | 2021-06-11 18:33:07 +0000 |
| commit | e0e9fb8affbe37c2ff73b9afb60f726e747f428d (patch) | |
| tree | 6a3fa8b8e487eab8ac3434bb21e7174d22c2266f /src/runtime/malloc.go | |
| parent | 4468e1cfb94ed07fea5514dce740180fd3a6d20f (diff) | |
| download | go-e0e9fb8affbe37c2ff73b9afb60f726e747f428d.tar.xz | |
[dev.typeparams] runtime: simplify defer record allocation
Now that deferred functions are always argumentless and defer
records are no longer with arguments, defer record can be fixed
size (just the _defer struct). This allows us to simplify the
allocation of defer records, specifically, remove the defer
classes and the pools of different sized defers.
Change-Id: Icc4b16afc23b38262ca9dd1f7369ad40874cf701
Reviewed-on: https://go-review.googlesource.com/c/go/+/326062
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Diffstat (limited to 'src/runtime/malloc.go')
| -rw-r--r-- | src/runtime/malloc.go | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/src/runtime/malloc.go b/src/runtime/malloc.go index 2759bbdaf9..c5f62483ff 100644 --- a/src/runtime/malloc.go +++ b/src/runtime/malloc.go @@ -420,8 +420,6 @@ func mallocinit() { throw("bad TinySizeClass") } - testdefersizes() - if heapArenaBitmapBytes&(heapArenaBitmapBytes-1) != 0 { // heapBits expects modular arithmetic on bitmap // addresses to work. @@ -1088,15 +1086,6 @@ func mallocgc(size uintptr, typ *_type, needzero bool) unsafe.Pointer { var scanSize uintptr if !noscan { - // If allocating a defer+arg block, now that we've picked a malloc size - // large enough to hold everything, cut the "asked for" size down to - // just the defer header, so that the GC bitmap will record the arg block - // as containing nothing at all (as if it were unused space at the end of - // a malloc block caused by size rounding). - // The defer arg areas are scanned as part of scanstack. - if typ == deferType { - dataSize = unsafe.Sizeof(_defer{}) - } heapBitsSetType(uintptr(x), size, dataSize, typ) if dataSize > typ.size { // Array allocation. If there are any |