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lib/fs: use unsafe.Slice instead of deprecated reflect.SliceHeader

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Aliaksandr Valialkin 2024-02-29 17:18:33 +02:00
parent 4b1a262475
commit 9bc4c51ceb
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1 changed files with 2 additions and 7 deletions
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9
lib/fs/fs_windows.go
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@ -89,11 +89,7 @@ func mmap(fd int, length int) ([]byte, error) {
windows.CloseHandle(h) windows.CloseHandle(h)
return nil, os.NewSyscallError("MapViewOfFile", errno) return nil, os.NewSyscallError("MapViewOfFile", errno)
} }
data := make([]byte, 0) data := unsafe.Slice(addr, length)
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&data))
hdr.Data = addr
hdr.Len = length
hdr.Cap = hdr.Len
mmapByAddrLock.Lock() mmapByAddrLock.Lock()
mmapByAddr[addr] = h mmapByAddr[addr] = h
@ -105,8 +101,7 @@ func mmap(fd int, length int) ([]byte, error) {
func mUnmap(data []byte) error { func mUnmap(data []byte) error {
// flush is not needed, since we perform only reading operation. // flush is not needed, since we perform only reading operation.
// In case of write, additional call FlushViewOfFile must be performed. // In case of write, additional call FlushViewOfFile must be performed.
header := (*reflect.SliceHeader)(unsafe.Pointer(&data)) addr := uintptr(unsafe.Pointer(&data[0]))
addr := header.Data
mmapByAddrLock.Lock() mmapByAddrLock.Lock()
h, ok := mmapByAddr[addr] h, ok := mmapByAddr[addr]