1 // Do not edit. Bootstrap copy of /Volumes/Android/buildbot/src/android/build-tools/out/obj/go/src/cmd/link/internal/ld/util.go 2 3 //line /Volumes/Android/buildbot/src/android/build-tools/out/obj/go/src/cmd/link/internal/ld/util.go:1 4 // Copyright 2015 The Go Authors. All rights reserved. 5 // Use of this source code is governed by a BSD-style 6 // license that can be found in the LICENSE file. 7 8 package ld 9 10 import ( 11 "bytes" 12 "encoding/binary" 13 "log" 14 "os" 15 "runtime" 16 "runtime/pprof" 17 "strings" 18 "time" 19 ) 20 21 func cstring(x []byte) string { 22 i := bytes.IndexByte(x, '\x00') 23 if i >= 0 { 24 x = x[:i] 25 } 26 return string(x) 27 } 28 29 func tokenize(s string) []string { 30 var f []string 31 for { 32 s = strings.TrimLeft(s, " \t\r\n") 33 if s == "" { 34 break 35 } 36 quote := false 37 i := 0 38 for ; i < len(s); i++ { 39 if s[i] == '\'' { 40 if quote && i+1 < len(s) && s[i+1] == '\'' { 41 i++ 42 continue 43 } 44 quote = !quote 45 } 46 if !quote && (s[i] == ' ' || s[i] == '\t' || s[i] == '\r' || s[i] == '\n') { 47 break 48 } 49 } 50 next := s[:i] 51 s = s[i:] 52 if strings.Contains(next, "'") { 53 var buf []byte 54 quote := false 55 for i := 0; i < len(next); i++ { 56 if next[i] == '\'' { 57 if quote && i+1 < len(next) && next[i+1] == '\'' { 58 i++ 59 buf = append(buf, '\'') 60 } 61 quote = !quote 62 continue 63 } 64 buf = append(buf, next[i]) 65 } 66 next = string(buf) 67 } 68 f = append(f, next) 69 } 70 return f 71 } 72 73 func cutStringAtNUL(s string) string { 74 if i := strings.Index(s, "\x00"); i >= 0 { 75 s = s[:i] 76 } 77 return s 78 } 79 80 func Access(name string, mode int) int { 81 if mode != 0 { 82 panic("bad access") 83 } 84 _, err := os.Stat(name) 85 if err != nil { 86 return -1 87 } 88 return 0 89 } 90 91 // strings.Compare, introduced in Go 1.5. 92 func stringsCompare(a, b string) int { 93 if a == b { 94 return 0 95 } 96 if a < b { 97 return -1 98 } 99 return +1 100 } 101 102 var atExitFuncs []func() 103 104 func AtExit(f func()) { 105 atExitFuncs = append(atExitFuncs, f) 106 } 107 108 func Exit(code int) { 109 for i := len(atExitFuncs) - 1; i >= 0; i-- { 110 f := atExitFuncs[i] 111 atExitFuncs = atExitFuncs[:i] 112 f() 113 } 114 os.Exit(code) 115 } 116 117 var ( 118 cpuprofile string 119 memprofile string 120 memprofilerate int64 121 ) 122 123 func startProfile() { 124 if cpuprofile != "" { 125 f, err := os.Create(cpuprofile) 126 if err != nil { 127 log.Fatalf("%v", err) 128 } 129 if err := pprof.StartCPUProfile(f); err != nil { 130 log.Fatalf("%v", err) 131 } 132 AtExit(pprof.StopCPUProfile) 133 } 134 if memprofile != "" { 135 if memprofilerate != 0 { 136 runtime.MemProfileRate = int(memprofilerate) 137 } 138 f, err := os.Create(memprofile) 139 if err != nil { 140 log.Fatalf("%v", err) 141 } 142 AtExit(func() { 143 runtime.GC() // profile all outstanding allocations 144 if err := pprof.WriteHeapProfile(f); err != nil { 145 log.Fatalf("%v", err) 146 } 147 }) 148 } 149 } 150 151 func artrim(x []byte) string { 152 i := 0 153 j := len(x) 154 for i < len(x) && x[i] == ' ' { 155 i++ 156 } 157 for j > i && x[j-1] == ' ' { 158 j-- 159 } 160 return string(x[i:j]) 161 } 162 163 func stringtouint32(x []uint32, s string) { 164 for i := 0; len(s) > 0; i++ { 165 var buf [4]byte 166 s = s[copy(buf[:], s):] 167 x[i] = binary.LittleEndian.Uint32(buf[:]) 168 } 169 } 170 171 var start = time.Now() 172 173 func elapsed() float64 { 174 return time.Since(start).Seconds() 175 } 176
