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sync: use 386 instead of x86-32 to refer to the 32 bit x86 architecture

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This aligns the naming with GOARCH using 386 as a build target for
this architecture and makes it more easily found when searching
for documentation related to the build target.

Change-Id: I393bb89dd2f71e568124107b13e1b288fbd0c76a
Reviewed-on: https://go-review.googlesource.com/c/go/+/271988
Trust: Martin Möhrmann <moehrmann@google.com>
Run-TryBot: Martin Möhrmann <martisch@uos.de>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Martin Möhrmann 2020-11-21 15:53:18 +01:00
parent 9ea6364a5e
commit d902791b50
2 changed files with 6 additions and 7 deletions
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11
src/sync/atomic/doc.go
View file

@ -43,15 +43,14 @@ import (
"unsafe" "unsafe"
) )
// BUG(rsc): On x86-32, the 64-bit functions use instructions unavailable before the Pentium MMX. // BUG(rsc): On 386, the 64-bit functions use instructions unavailable before the Pentium MMX.
// //
// On non-Linux ARM, the 64-bit functions use instructions unavailable before the ARMv6k core. // On non-Linux ARM, the 64-bit functions use instructions unavailable before the ARMv6k core.
// //
// On ARM, x86-32, and 32-bit MIPS, // On ARM, 386, and 32-bit MIPS, it is the caller's responsibility
// it is the caller's responsibility to arrange for 64-bit // to arrange for 64-bit alignment of 64-bit words accessed atomically.
// alignment of 64-bit words accessed atomically. The first word in a // The first word in a variable or in an allocated struct, array, or slice can
// variable or in an allocated struct, array, or slice can be relied upon to be // be relied upon to be 64-bit aligned.
// 64-bit aligned.
// SwapInt32 atomically stores new into *addr and returns the previous *addr value. // SwapInt32 atomically stores new into *addr and returns the previous *addr value.
func SwapInt32(addr *int32, new int32) (old int32) func SwapInt32(addr *int32, new int32) (old int32)

2
src/sync/once.go
View file

@ -15,7 +15,7 @@ type Once struct {
// done indicates whether the action has been performed. // done indicates whether the action has been performed.
// It is first in the struct because it is used in the hot path. // It is first in the struct because it is used in the hot path.
// The hot path is inlined at every call site. // The hot path is inlined at every call site.
// Placing done first allows more compact instructions on some architectures (amd64/x86), // Placing done first allows more compact instructions on some architectures (amd64/386),
// and fewer instructions (to calculate offset) on other architectures. // and fewer instructions (to calculate offset) on other architectures.
done uint32 done uint32
m Mutex m Mutex