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Merge pull request #71 from darrenstahlmsft/RemoveTimeBeginPeriod

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Remove workaround to perf issues in go1.6
This commit is contained in:
Darren Stahl
2018-01-16 14:35:03 -08:00
committed by GitHub
parent b7c3cf0d12 6f4ae360a5
commit 7da180ee92
2 changed files with 0 additions and 11 deletions
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file.go
-3
View File
@@ -16,7 +16,6 @@ import (
//sys createIoCompletionPort(file syscall.Handle, port syscall.Handle, key uintptr, threadCount uint32) (newport syscall.Handle, err error) = CreateIoCompletionPort
//sys getQueuedCompletionStatus(port syscall.Handle, bytes *uint32, key *uintptr, o **ioOperation, timeout uint32) (err error) = GetQueuedCompletionStatus
//sys setFileCompletionNotificationModes(h syscall.Handle, flags uint8) (err error) = SetFileCompletionNotificationModes
//sys timeBeginPeriod(period uint32) (n int32) = winmm.timeBeginPeriod
type atomicBool int32
@@ -153,8 +152,6 @@ func (f *win32File) prepareIo() (*ioOperation, error) {
// ioCompletionProcessor processes completed async IOs forever
func ioCompletionProcessor(h syscall.Handle) {
// Set the timer resolution to 1. This fixes a performance regression in golang 1.6.
timeBeginPeriod(1)
for {
var bytes uint32
var key uintptr
zsyscall_windows.go
-8
View File
@@ -38,14 +38,12 @@ func errnoErr(e syscall.Errno) error {
var (
modkernel32 = windows.NewLazySystemDLL("kernel32.dll")
modwinmm = windows.NewLazySystemDLL("winmm.dll")
modadvapi32 = windows.NewLazySystemDLL("advapi32.dll")
procCancelIoEx = modkernel32.NewProc("CancelIoEx")
procCreateIoCompletionPort = modkernel32.NewProc("CreateIoCompletionPort")
procGetQueuedCompletionStatus = modkernel32.NewProc("GetQueuedCompletionStatus")
procSetFileCompletionNotificationModes = modkernel32.NewProc("SetFileCompletionNotificationModes")
proctimeBeginPeriod = modwinmm.NewProc("timeBeginPeriod")
procConnectNamedPipe = modkernel32.NewProc("ConnectNamedPipe")
procCreateNamedPipeW = modkernel32.NewProc("CreateNamedPipeW")
procCreateFileW = modkernel32.NewProc("CreateFileW")
@@ -122,12 +120,6 @@ func setFileCompletionNotificationModes(h syscall.Handle, flags uint8) (err erro
return
}
func timeBeginPeriod(period uint32) (n int32) {
r0, _, _ := syscall.Syscall(proctimeBeginPeriod.Addr(), 1, uintptr(period), 0, 0)
n = int32(r0)
return
}
func connectNamedPipe(pipe syscall.Handle, o *syscall.Overlapped) (err error) {
r1, _, e1 := syscall.Syscall(procConnectNamedPipe.Addr(), 2, uintptr(pipe), uintptr(unsafe.Pointer(o)), 0)
if r1 == 0 {