mio/sys/unix/
mod.rs

1/// Helper macro to execute a system call that returns an `io::Result`.
2//
3// Macro must be defined before any modules that use them.
4#[allow(unused_macros)]
5macro_rules! syscall {
6    ($fn: ident ( $($arg: expr),* $(,)* ) ) => {{
7        #[allow(unused_unsafe)]
8        let res = unsafe { libc::$fn($($arg, )*) };
9        if res < 0 {
10            Err(std::io::Error::last_os_error())
11        } else {
12            Ok(res)
13        }
14    }};
15}
16
17cfg_os_poll! {
18    #[cfg_attr(all(
19        not(mio_unsupported_force_poll_poll),
20        any(
21            target_os = "android",
22            target_os = "illumos",
23            target_os = "linux",
24            target_os = "redox",
25        )
26    ), path = "selector/epoll.rs")]
27    #[cfg_attr(all(
28        not(mio_unsupported_force_poll_poll),
29        any(
30            target_os = "dragonfly",
31            target_os = "freebsd",
32            target_os = "ios",
33            target_os = "macos",
34            target_os = "netbsd",
35            target_os = "openbsd",
36            target_os = "tvos",
37            target_os = "visionos",
38            target_os = "watchos",
39        )
40    ), path = "selector/kqueue.rs")]
41    #[cfg_attr(any(
42        mio_unsupported_force_poll_poll,
43        target_os = "aix",
44        target_os = "espidf",
45        target_os = "fuchsia",
46        target_os = "haiku",
47        target_os = "hermit",
48        target_os = "hurd",
49        target_os = "nto",
50        target_os = "solaris",
51        target_os = "vita",
52        target_os = "cygwin",
53        target_os = "wasi",
54        target_os = "horizon"
55    ), path = "selector/poll.rs")]
56    mod selector;
57    pub(crate) use self::selector::*;
58
59    #[cfg_attr(all(
60        not(mio_unsupported_force_waker_pipe),
61        any(
62            target_os = "android",
63            target_os = "espidf",
64            target_os = "fuchsia",
65            target_os = "hermit",
66            target_os = "illumos",
67            target_os = "linux",
68        )
69    ), path = "waker/eventfd.rs")]
70    #[cfg_attr(all(
71        not(mio_unsupported_force_waker_pipe),
72        not(mio_unsupported_force_poll_poll), // `kqueue(2)` based waker doesn't work with `poll(2)`.
73        any(
74            target_os = "freebsd",
75            target_os = "ios",
76            target_os = "macos",
77            target_os = "tvos",
78            target_os = "visionos",
79            target_os = "watchos",
80        )
81    ), path = "waker/kqueue.rs")]
82    #[cfg_attr(any(
83        // NOTE: also add to the list for the `pipe` module below.
84        mio_unsupported_force_waker_pipe,
85        all(
86            // `kqueue(2)` based waker doesn't work with `poll(2)`.
87            mio_unsupported_force_poll_poll,
88            any(
89                target_os = "freebsd",
90                target_os = "ios",
91                target_os = "macos",
92                target_os = "tvos",
93                target_os = "visionos",
94                target_os = "watchos",
95            ),
96        ),
97        target_os = "aix",
98        target_os = "dragonfly",
99        target_os = "haiku",
100        target_os = "hurd",
101        target_os = "netbsd",
102        target_os = "nto",
103        target_os = "openbsd",
104        target_os = "redox",
105        target_os = "solaris",
106        target_os = "vita",
107        target_os = "cygwin",
108        all(target_os = "wasi", target_env = "p1")
109    ), path = "waker/pipe.rs")]
110    #[cfg_attr(any(target_os = "horizon", all(target_os = "wasi", not(target_env = "p1"))), path = "waker/single_threaded.rs")]
111    mod waker;
112    // NOTE: the `Waker` type is expected in the selector module as the
113    // `poll(2)` implementation needs to do some special stuff.
114
115    #[cfg(feature = "os-ext")]
116    mod sourcefd;
117    #[cfg(feature = "os-ext")]
118    pub use self::sourcefd::SourceFd;
119
120    cfg_net! {
121        mod net;
122
123        pub(crate) mod tcp;
124        pub(crate) mod udp;
125        #[cfg(not(any(target_os = "hermit", target_os = "wasi")))]
126        pub(crate) mod uds;
127    }
128
129    #[cfg(all(
130        any(
131            // For the public `pipe` module, must match `cfg_os_ext` macro.
132            feature = "os-ext",
133            // For the `Waker` type based on a pipe.
134            mio_unsupported_force_waker_pipe,
135            all(
136                // `kqueue(2)` based waker doesn't work with `poll(2)`.
137                mio_unsupported_force_poll_poll,
138                any(
139                    target_os = "freebsd",
140                    target_os = "ios",
141                    target_os = "macos",
142                    target_os = "tvos",
143                    target_os = "visionos",
144                    target_os = "watchos",
145                ),
146            ),
147            // NOTE: also add to the list for the `pipe` module below.
148            target_os = "aix",
149            target_os = "dragonfly",
150            target_os = "haiku",
151            target_os = "hurd",
152            target_os = "netbsd",
153            target_os = "nto",
154            target_os = "openbsd",
155            target_os = "redox",
156            target_os = "solaris",
157            target_os = "vita",
158            target_os = "cygwin",
159        ),
160        not(target_os = "hermit"),
161        not(target_os = "wasi"),
162    ))]
163    pub(crate) mod pipe;
164}
165
166cfg_not_os_poll! {
167    cfg_os_ext! {
168        mod sourcefd;
169        pub use self::sourcefd::SourceFd;
170    }
171}
mio/sys/unix/mod.rs

mio/sys/unix/
mod.rs
