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428afae027
Yet another leftover from C: parfor took a func value for the callback, casted it to an unsafe.Pointer for storage, and then casted it back to a func value to call it. This is unnecessary, so just store the body as a func value. Beyond general cleanup, this also eliminates the last use of unsafe in parfor. Change-Id: Ia904af7c6c443ba75e2699835aee8e9a39b26dd8 Reviewed-on: https://go-review.googlesource.com/3396 Reviewed-by: Russ Cox <rsc@golang.org> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
120 lines
2.4 KiB
Go
120 lines
2.4 KiB
Go
// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Export guts for testing.
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package runtime
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import "unsafe"
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var Fadd64 = fadd64
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var Fsub64 = fsub64
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var Fmul64 = fmul64
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var Fdiv64 = fdiv64
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var F64to32 = f64to32
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var F32to64 = f32to64
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var Fcmp64 = fcmp64
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var Fintto64 = fintto64
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var F64toint = f64toint
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var Entersyscall = entersyscall
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var Exitsyscall = exitsyscall
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var LockedOSThread = lockedOSThread
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type LFNode struct {
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Next uint64
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Pushcnt uintptr
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}
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func LFStackPush(head *uint64, node *LFNode) {
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lfstackpush(head, (*lfnode)(unsafe.Pointer(node)))
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}
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func LFStackPop(head *uint64) *LFNode {
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return (*LFNode)(unsafe.Pointer(lfstackpop(head)))
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}
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type ParFor struct {
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body func(*ParFor, uint32)
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done uint32
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Nthr uint32
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thrseq uint32
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Cnt uint32
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wait bool
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}
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func NewParFor(nthrmax uint32) *ParFor {
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var desc *ParFor
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systemstack(func() {
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desc = (*ParFor)(unsafe.Pointer(parforalloc(nthrmax)))
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})
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return desc
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}
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func ParForSetup(desc *ParFor, nthr, n uint32, wait bool, body func(*ParFor, uint32)) {
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systemstack(func() {
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parforsetup((*parfor)(unsafe.Pointer(desc)), nthr, n, wait,
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*(*func(*parfor, uint32))(unsafe.Pointer(&body)))
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})
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}
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func ParForDo(desc *ParFor) {
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systemstack(func() {
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parfordo((*parfor)(unsafe.Pointer(desc)))
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})
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}
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func ParForIters(desc *ParFor, tid uint32) (uint32, uint32) {
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desc1 := (*parfor)(unsafe.Pointer(desc))
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pos := desc1.thr[tid].pos
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return uint32(pos), uint32(pos >> 32)
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}
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func GCMask(x interface{}) (ret []byte) {
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e := (*eface)(unsafe.Pointer(&x))
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s := (*slice)(unsafe.Pointer(&ret))
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systemstack(func() {
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var len uintptr
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getgcmask(e.data, e._type, &s.array, &len)
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s.len = uint(len)
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s.cap = s.len
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})
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return
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}
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func RunSchedLocalQueueTest() {
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systemstack(testSchedLocalQueue)
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}
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func RunSchedLocalQueueStealTest() {
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systemstack(testSchedLocalQueueSteal)
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}
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var StringHash = stringHash
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var BytesHash = bytesHash
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var Int32Hash = int32Hash
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var Int64Hash = int64Hash
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var EfaceHash = efaceHash
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var IfaceHash = ifaceHash
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var MemclrBytes = memclrBytes
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var HashLoad = &hashLoad
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// For testing.
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func GogoBytes() int32 {
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return _RuntimeGogoBytes
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}
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// entry point for testing
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func GostringW(w []uint16) (s string) {
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systemstack(func() {
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s = gostringw(&w[0])
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})
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return
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}
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var Gostringnocopy = gostringnocopy
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var Maxstring = &maxstring
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type Uintreg uintreg
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