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runtime: mark atomic methods which call nosplit functions as nosplit
Fixes #54411 Change-Id: I482ebca7365862bfb82a9daf8111c6f395aa1170 Reviewed-on: https://go-review.googlesource.com/c/go/+/423255 Reviewed-by: Michael Knyszek <mknyszek@google.com> Reviewed-by: Michael Pratt <mpratt@google.com> Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com> TryBot-Result: Gopher Robot <gobot@golang.org>
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@ -100,6 +100,8 @@ type Uint8 struct {
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}
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// Load accesses and returns the value atomically.
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//
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//go:nosplit
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func (u *Uint8) Load() uint8 {
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return Load8(&u.value)
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}
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@ -136,6 +138,8 @@ type Bool struct {
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}
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// Load accesses and returns the value atomically.
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//
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//go:nosplit
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func (b *Bool) Load() bool {
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return b.u.Load() != 0
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}
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@ -158,6 +162,8 @@ type Uint32 struct {
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}
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// Load accesses and returns the value atomically.
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//
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//go:nosplit
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func (u *Uint32) Load() uint32 {
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return Load(&u.value)
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}
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@ -169,6 +175,8 @@ func (u *Uint32) Load() uint32 {
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// on this thread can be observed to occur before it.
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//
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// WARNING: Use sparingly and with great care.
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//
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//go:nosplit
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func (u *Uint32) LoadAcquire() uint32 {
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return LoadAcq(&u.value)
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}
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@ -255,6 +263,8 @@ type Uint64 struct {
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}
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// Load accesses and returns the value atomically.
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//
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//go:nosplit
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func (u *Uint64) Load() uint64 {
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return Load64(&u.value)
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}
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@ -283,6 +293,8 @@ func (u *Uint64) Swap(value uint64) uint64 {
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//
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// This operation wraps around in the usual
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// two's-complement way.
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//
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//go:nosplit
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func (u *Uint64) Add(delta int64) uint64 {
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return Xadd64(&u.value, delta)
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}
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@ -307,6 +319,8 @@ func (u *Uintptr) Load() uintptr {
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// on this thread can be observed to occur before it.
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//
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// WARNING: Use sparingly and with great care.
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//
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//go:nosplit
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func (u *Uintptr) LoadAcquire() uintptr {
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return LoadAcquintptr(&u.value)
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}
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@ -361,6 +375,8 @@ type Float64 struct {
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}
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// Load accesses and returns the value atomically.
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//
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//go:nosplit
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func (f *Float64) Load() float64 {
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r := f.u.Load()
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return *(*float64)(unsafe.Pointer(&r))
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@ -386,6 +402,8 @@ type UnsafePointer struct {
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}
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// Load accesses and returns the value atomically.
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//
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//go:nosplit
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func (u *UnsafePointer) Load() unsafe.Pointer {
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return Loadp(unsafe.Pointer(&u.value))
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}
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@ -420,6 +438,8 @@ type Pointer[T any] struct {
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}
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// Load accesses and returns the value atomically.
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//
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//go:nosplit
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func (p *Pointer[T]) Load() *T {
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return (*T)(p.u.Load())
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}
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