1/****************************************************************************
2**
3** Copyright (C) 2019 Intel Corporation.
4**
5** Permission is hereby granted, free of charge, to any person obtaining a copy
6** of this software and associated documentation files (the "Software"), to deal
7** in the Software without restriction, including without limitation the rights
8** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9** copies of the Software, and to permit persons to whom the Software is
10** furnished to do so, subject to the following conditions:
11**
12** The above copyright notice and this permission notice shall be included in
13** all copies or substantial portions of the Software.
14**
15** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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21** THE SOFTWARE.
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23****************************************************************************/
24
25#ifndef FORKFD_H
26#define FORKFD_H
27
28#include <fcntl.h>
29#include <stdint.h>
30#include <sys/wait.h>
31#include <unistd.h> // to get the POSIX flags
32
33#if _POSIX_SPAWN > 0
34# include <spawn.h>
35#endif
36
37#ifdef __cplusplus
38extern "C" {
39#endif
40
41#define FFD_CLOEXEC 1
42#define FFD_NONBLOCK 2
43#define FFD_USE_FORK 4
44
45#define FFD_CHILD_PROCESS (-2)
46
47#define FFDW_NOHANG 1 /* WNOHANG */
48#define FFDW_NOWAIT 2 /* WNOWAIT */
49
50struct forkfd_info {
51 int32_t code;
52 int32_t status;
53};
54
55int forkfd(int flags, pid_t *ppid);
56int vforkfd(int flags, pid_t *ppid, int (*childFn)(void *), void *token);
57int forkfd_wait4(int ffd, struct forkfd_info *info, int options, struct rusage *rusage);
58static inline int forkfd_wait(int ffd, struct forkfd_info *info, struct rusage *rusage)
59{
60 return forkfd_wait4(ffd, info, options: 0, rusage);
61}
62int forkfd_close(int ffd);
63
64#if _POSIX_SPAWN > 0
65/* only for spawnfd: */
66# define FFD_SPAWN_SEARCH_PATH O_RDWR
67
68int spawnfd(int flags, pid_t *ppid, const char *path, const posix_spawn_file_actions_t *file_actions,
69 posix_spawnattr_t *attrp, char *const argv[], char *const envp[]);
70#endif
71
72#ifdef __cplusplus
73}
74#endif
75
76#endif // FORKFD_H
77

source code of qtbase/src/3rdparty/forkfd/forkfd.h