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Add architecture specific map sizes

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Signed-off-by: Goutham Veeramachaneni <cs14btech11014@iith.ac.in>
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Goutham Veeramachaneni 2018-03-14 18:59:20 +05:30
parent fb65e3daf4
commit 6e5164fe44
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3 changed files with 10 additions and 2 deletions
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5
fileutil/mmap_386.go Normal file
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@ -0,0 +1,5 @@
// +build windows
package fileutil
const maxMapSize = 0x7FFFFFFF // 2GB

5
fileutil/mmap_amd64.go Normal file
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@ -0,0 +1,5 @@
// +build windows
package fileutil
const maxMapSize = 0xFFFFFFFFFFFF // 256TB

2
fileutil/mmap_windows.go
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@ -19,8 +19,6 @@ import (
"unsafe"
)
const maxMapSize = 0xFFFFFFFFFFFF // 256TB
func mmap(f *os.File, size int) ([]byte, error) {
low, high := uint32(size), uint32(size>>32)
h, errno := syscall.CreateFileMapping(syscall.Handle(f.Fd()), nil, syscall.PAGE_READONLY, high, low, nil)