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f8ef685bdd
在四点链接的情况下，我们只终端中间两点是不够的，要切三刀； 总之实践很简单，就是copy完成之后，要Close所有的链接 readv的话，系统readv数组和buffer不要在put进pool后相互引用 添加-bl 选项，可以自定义buf大小；注意越小可能越慢，建议buf大小保持在4k以上 添加-pp选项，可以生成cpu.pprof文件 修复其它小问题.
48 lines
925 B
Go
48 lines
925 B
Go
package utils
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import (
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"syscall"
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)
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func GetReadVReader() SystemReadver {
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return new(windowsReader)
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}
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type windowsReader struct {
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bufs []syscall.WSABuf
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}
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func (r *windowsReader) Init(bs [][]byte, singleBufLen int) {
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if r.bufs == nil {
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r.bufs = make([]syscall.WSABuf, 0, len(bs))
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}
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for _, b := range bs {
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r.bufs = append(r.bufs, syscall.WSABuf{Len: uint32(singleBufLen), Buf: &b[0]})
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}
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}
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func (r *windowsReader) Clear() {
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for idx := range r.bufs {
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r.bufs[idx].Buf = nil
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}
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r.bufs = r.bufs[:0]
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}
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func (r *windowsReader) Recover(bsLen int, bs [][]byte) {
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r.bufs = r.bufs[:len(bs)]
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for idx := range r.bufs {
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r.bufs[idx].Buf = &(bs[idx][0])
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}
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}
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func (r *windowsReader) Read(fd uintptr) (uint32, error) {
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var nBytes uint32
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var flags uint32
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err := syscall.WSARecv(syscall.Handle(fd), &r.bufs[0], uint32(len(r.bufs)), &nBytes, &flags, nil, nil)
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if err != nil {
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return 0, err
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}
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return nBytes, nil
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}
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