1 // Copyright 2010 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // Export guts for testing. 6 7 package runtime 8 9 import "unsafe" 10 11 var Fadd64 = fadd64 12 var Fsub64 = fsub64 13 var Fmul64 = fmul64 14 var Fdiv64 = fdiv64 15 var F64to32 = f64to32 16 var F32to64 = f32to64 17 var Fcmp64 = fcmp64 18 var Fintto64 = fintto64 19 var F64toint = f64toint 20 var Sqrt = sqrt 21 22 var Entersyscall = entersyscall 23 var Exitsyscall = exitsyscall 24 var LockedOSThread = lockedOSThread 25 var Xadduintptr = xadduintptr 26 27 var FuncPC = funcPC 28 29 type LFNode struct { 30 Next uint64 31 Pushcnt uintptr 32 } 33 34 func LFStackPush(head *uint64, node *LFNode) { 35 lfstackpush(head, (*lfnode)(unsafe.Pointer(node))) 36 } 37 38 func LFStackPop(head *uint64) *LFNode { 39 return (*LFNode)(unsafe.Pointer(lfstackpop(head))) 40 } 41 42 type ParFor struct { 43 body func(*ParFor, uint32) 44 done uint32 45 Nthr uint32 46 thrseq uint32 47 Cnt uint32 48 wait bool 49 } 50 51 func NewParFor(nthrmax uint32) *ParFor { 52 var desc *ParFor 53 systemstack(func() { 54 desc = (*ParFor)(unsafe.Pointer(parforalloc(nthrmax))) 55 }) 56 return desc 57 } 58 59 func ParForSetup(desc *ParFor, nthr, n uint32, wait bool, body func(*ParFor, uint32)) { 60 systemstack(func() { 61 parforsetup((*parfor)(unsafe.Pointer(desc)), nthr, n, wait, 62 *(*func(*parfor, uint32))(unsafe.Pointer(&body))) 63 }) 64 } 65 66 func ParForDo(desc *ParFor) { 67 systemstack(func() { 68 parfordo((*parfor)(unsafe.Pointer(desc))) 69 }) 70 } 71 72 func ParForIters(desc *ParFor, tid uint32) (uint32, uint32) { 73 desc1 := (*parfor)(unsafe.Pointer(desc)) 74 pos := desc1.thr[tid].pos 75 return uint32(pos), uint32(pos >> 32) 76 } 77 78 func GCMask(x interface{}) (ret []byte) { 79 systemstack(func() { 80 ret = getgcmask(x) 81 }) 82 return 83 } 84 85 func RunSchedLocalQueueTest() { 86 testSchedLocalQueue() 87 } 88 func RunSchedLocalQueueStealTest() { 89 testSchedLocalQueueSteal() 90 } 91 92 var StringHash = stringHash 93 var BytesHash = bytesHash 94 var Int32Hash = int32Hash 95 var Int64Hash = int64Hash 96 var EfaceHash = efaceHash 97 var IfaceHash = ifaceHash 98 var MemclrBytes = memclrBytes 99 100 var HashLoad = &hashLoad 101 102 // entry point for testing 103 func GostringW(w []uint16) (s string) { 104 systemstack(func() { 105 s = gostringw(&w[0]) 106 }) 107 return 108 } 109 110 var Gostringnocopy = gostringnocopy 111 var Maxstring = &maxstring 112 113 type Uintreg uintreg 114 115 var Open = open 116 var Close = closefd 117 var Read = read 118 var Write = write 119 120 func Envs() []string { return envs } 121 func SetEnvs(e []string) { envs = e } 122 123 var BigEndian = _BigEndian 124 125 // For benchmarking. 126 127 func BenchSetType(n int, x interface{}) { 128 e := *(*eface)(unsafe.Pointer(&x)) 129 t := e._type 130 var size uintptr 131 var p unsafe.Pointer 132 switch t.kind & kindMask { 133 case _KindPtr: 134 t = (*ptrtype)(unsafe.Pointer(t)).elem 135 size = t.size 136 p = e.data 137 case _KindSlice: 138 slice := *(*struct { 139 ptr unsafe.Pointer 140 len, cap uintptr 141 })(e.data) 142 t = (*slicetype)(unsafe.Pointer(t)).elem 143 size = t.size * slice.len 144 p = slice.ptr 145 } 146 allocSize := roundupsize(size) 147 systemstack(func() { 148 for i := 0; i < n; i++ { 149 heapBitsSetType(uintptr(p), allocSize, size, t) 150 } 151 }) 152 } 153 154 const PtrSize = ptrSize 155 156 var TestingAssertE2I2GC = &testingAssertE2I2GC 157 var TestingAssertE2T2GC = &testingAssertE2T2GC 158
