github.com/geraldss/go/src@v0.0.0-20210511222824-ac7d0ebfc235/runtime/mmap.go (about)

     1  // Copyright 2015 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build !aix
     6  // +build !darwin
     7  // +build !js
     8  // +build !linux !amd64
     9  // +build !linux !arm64
    10  // +build !openbsd
    11  // +build !plan9
    12  // +build !solaris
    13  // +build !windows
    14  
    15  package runtime
    16  
    17  import "unsafe"
    18  
    19  // mmap calls the mmap system call. It is implemented in assembly.
    20  // We only pass the lower 32 bits of file offset to the
    21  // assembly routine; the higher bits (if required), should be provided
    22  // by the assembly routine as 0.
    23  // The err result is an OS error code such as ENOMEM.
    24  func mmap(addr unsafe.Pointer, n uintptr, prot, flags, fd int32, off uint32) (p unsafe.Pointer, err int)
    25  
    26  // munmap calls the munmap system call. It is implemented in assembly.
    27  func munmap(addr unsafe.Pointer, n uintptr)