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.
|
| // +build linux,amd64 linux,arm64
|
| #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();
| }
| }
|
|
