blob: eb710a039d4e0569ccc83673f53c4db90cf07898 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build (linux && (amd64 || arm64 || loong64 || ppc64le)) || (freebsd && amd64)
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/mman.h>
#include "libcgo.h"
uintptr_t
x_cgo_mmap(void *addr, uintptr_t length, int32_t prot, int32_t flags, int32_t fd, uint32_t offset) {
void *p;
_cgo_tsan_acquire();
p = mmap(addr, length, prot, flags, fd, offset);
_cgo_tsan_release();
if (p == MAP_FAILED) {
/* This is what the Go code expects on failure. */
return (uintptr_t)errno;
}
return (uintptr_t)p;
}
void
x_cgo_munmap(void *addr, uintptr_t length) {
int r;
_cgo_tsan_acquire();
r = munmap(addr, length);
_cgo_tsan_release();
if (r < 0) {
/* The Go runtime is not prepared for munmap to fail. */
abort();
}
}
|
