seaweedfs/weed/storage/volume_create_windows.go

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// +build windows
package storage
import (
"os"
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"github.com/chrislusf/seaweedfs/weed/storage/backend/memory_map"
"golang.org/x/sys/windows"
"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/storage/backend/memory_map/os_overloads"
)
func createVolumeFile(fileName string, preallocate int64, memoryMapSizeMB uint32) (*os.File, error) {
mMap, exists := memory_map.FileMemoryMap[fileName]
if !exists {
if preallocate > 0 {
glog.V(0).Infof("Preallocated disk space for %s is not supported", fileName)
}
if memoryMapSizeMB > 0 {
file, e := os_overloads.OpenFile(fileName, windows.O_RDWR|windows.O_CREAT, 0644, true)
memory_map.FileMemoryMap[fileName] = new(memory_map.MemoryMap)
new_mMap := memory_map.FileMemoryMap[fileName]
new_mMap.CreateMemoryMap(file, 1024*1024*uint64(memoryMapSizeMB))
return file, e
} else {
file, e := os_overloads.OpenFile(fileName, windows.O_RDWR|windows.O_CREAT|windows.O_TRUNC, 0644, false)
return file, e
}
} else {
return mMap.File, nil
}
}