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| 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/runtime2.go | |
| parent | 4468e1cfb94ed07fea5514dce740180fd3a6d20f (diff) | |
| download | go-e0e9fb8affbe37c2ff73b9afb60f726e747f428d.tar.gz go-e0e9fb8affbe37c2ff73b9afb60f726e747f428d.zip | |
[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/runtime2.go')
| -rw-r--r-- | src/runtime/runtime2.go | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/runtime/runtime2.go b/src/runtime/runtime2.go index cf4b0bff43..75c4818599 100644 --- a/src/runtime/runtime2.go +++ b/src/runtime/runtime2.go @@ -613,8 +613,8 @@ type p struct { pcache pageCache raceprocctx uintptr - deferpool [5][]*_defer // pool of available defer structs of different sizes (see panic.go) - deferpoolbuf [5][32]*_defer + deferpool []*_defer // pool of available defer structs (see panic.go) + deferpoolbuf [32]*_defer // Cache of goroutine ids, amortizes accesses to runtime·sched.goidgen. goidcache uint64 @@ -801,9 +801,9 @@ type schedt struct { sudoglock mutex sudogcache *sudog - // Central pool of available defer structs of different sizes. + // Central pool of available defer structs. deferlock mutex - deferpool [5]*_defer + deferpool *_defer // freem is the list of m's waiting to be freed when their // m.exited is set. Linked through m.freelink. |