From 881b0e78806e50125b81158b482e35057d57f522 Mon Sep 17 00:00:00 2001 From: Nodir Turakulov Date: Thu, 15 Oct 2015 23:34:56 -0700 Subject: [PATCH] runtime: merge string1.go into string.go string1.go contents are appended to string.go as is Updates #12952 Change-Id: I30083ba7fdd362d4421e964a494c76ca865bedc2 Reviewed-on: https://go-review.googlesource.com/15951 Reviewed-by: Brad Fitzpatrick Run-TryBot: Brad Fitzpatrick TryBot-Result: Gobot Gobot --- src/runtime/string.go | 60 +++++++++++++++++++++++++++++++++++++ src/runtime/string1.go | 67 ------------------------------------------ 2 files changed, 60 insertions(+), 67 deletions(-) delete mode 100644 src/runtime/string1.go diff --git a/src/runtime/string.go b/src/runtime/string.go index a5851b7abc..0b31173b30 100644 --- a/src/runtime/string.go +++ b/src/runtime/string.go @@ -360,3 +360,63 @@ func atoi(s string) int { } return n } + +//go:nosplit +func findnull(s *byte) int { + if s == nil { + return 0 + } + p := (*[_MaxMem/2 - 1]byte)(unsafe.Pointer(s)) + l := 0 + for p[l] != 0 { + l++ + } + return l +} + +func findnullw(s *uint16) int { + if s == nil { + return 0 + } + p := (*[_MaxMem/2/2 - 1]uint16)(unsafe.Pointer(s)) + l := 0 + for p[l] != 0 { + l++ + } + return l +} + +var maxstring uintptr = 256 // a hint for print + +//go:nosplit +func gostringnocopy(str *byte) string { + ss := stringStruct{str: unsafe.Pointer(str), len: findnull(str)} + s := *(*string)(unsafe.Pointer(&ss)) + for { + ms := maxstring + if uintptr(len(s)) <= ms || casuintptr(&maxstring, ms, uintptr(len(s))) { + break + } + } + return s +} + +func gostringw(strw *uint16) string { + var buf [8]byte + str := (*[_MaxMem/2/2 - 1]uint16)(unsafe.Pointer(strw)) + n1 := 0 + for i := 0; str[i] != 0; i++ { + n1 += runetochar(buf[:], rune(str[i])) + } + s, b := rawstring(n1 + 4) + n2 := 0 + for i := 0; str[i] != 0; i++ { + // check for race + if n2 >= n1 { + break + } + n2 += runetochar(b[n2:], rune(str[i])) + } + b[n2] = 0 // for luck + return s[:n2] +} diff --git a/src/runtime/string1.go b/src/runtime/string1.go deleted file mode 100644 index 4bfa3d95f9..0000000000 --- a/src/runtime/string1.go +++ /dev/null @@ -1,67 +0,0 @@ -// Copyright 2009 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package runtime - -import "unsafe" - -//go:nosplit -func findnull(s *byte) int { - if s == nil { - return 0 - } - p := (*[_MaxMem/2 - 1]byte)(unsafe.Pointer(s)) - l := 0 - for p[l] != 0 { - l++ - } - return l -} - -func findnullw(s *uint16) int { - if s == nil { - return 0 - } - p := (*[_MaxMem/2/2 - 1]uint16)(unsafe.Pointer(s)) - l := 0 - for p[l] != 0 { - l++ - } - return l -} - -var maxstring uintptr = 256 // a hint for print - -//go:nosplit -func gostringnocopy(str *byte) string { - ss := stringStruct{str: unsafe.Pointer(str), len: findnull(str)} - s := *(*string)(unsafe.Pointer(&ss)) - for { - ms := maxstring - if uintptr(len(s)) <= ms || casuintptr(&maxstring, ms, uintptr(len(s))) { - break - } - } - return s -} - -func gostringw(strw *uint16) string { - var buf [8]byte - str := (*[_MaxMem/2/2 - 1]uint16)(unsafe.Pointer(strw)) - n1 := 0 - for i := 0; str[i] != 0; i++ { - n1 += runetochar(buf[:], rune(str[i])) - } - s, b := rawstring(n1 + 4) - n2 := 0 - for i := 0; str[i] != 0; i++ { - // check for race - if n2 >= n1 { - break - } - n2 += runetochar(b[n2:], rune(str[i])) - } - b[n2] = 0 // for luck - return s[:n2] -} -- 2.50.0