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runtime: convert ncgocall to atomic type 

For #53821

Change-Id: Ib0d62ee36487b3ed68e063976968f3cac6499e4b
Reviewed-on: https://go-review.googlesource.com/c/go/+/426075
Reviewed-by: Michael Pratt <mpratt@google.com>
Run-TryBot: xie cui <523516579@qq.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
This commit is contained in:
cuiweixie 2022-08-27 09:45:15 +08:00 committed by Michael Pratt
parent af991a6d28
commit 5a6db7c48f
3 changed files with 3 additions and 3 deletions
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2
src/runtime/cgocall.go
View File

@ -111,7 +111,7 @@ func syscall_cgocaller(fn unsafe.Pointer, args ...uintptr) uintptr {
return as.retval return as.retval
} }
var ncgocall uint64 // number of cgo calls in total for dead m var ncgocall atomic.Uint64 // number of cgo calls in total for dead m
// Call from Go to C. // Call from Go to C.
// //

2
src/runtime/debug.go
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@ -45,7 +45,7 @@ func NumCPU() int {
// NumCgoCall returns the number of cgo calls made by the current process. // NumCgoCall returns the number of cgo calls made by the current process.
func NumCgoCall() int64 { func NumCgoCall() int64 {
var n = int64(atomic.Load64(&ncgocall)) var n = int64(ncgocall.Load())
for mp := (*m)(atomic.Loadp(unsafe.Pointer(&allm))); mp != nil; mp = mp.alllink { for mp := (*m)(atomic.Loadp(unsafe.Pointer(&allm))); mp != nil; mp = mp.alllink {
n += int64(mp.ncgocall) n += int64(mp.ncgocall)
} }

2
src/runtime/proc.go
View File

@ -1530,7 +1530,7 @@ found:
} }
unlock(&sched.lock) unlock(&sched.lock)
atomic.Xadd64(&ncgocall, int64(mp.ncgocall)) ncgocall.Add(int64(mp.ncgocall))
// Release the P. // Release the P.
handoffp(releasep()) handoffp(releasep())