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 uses 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    ), path = "selector/poll.rs")]
55    mod selector;
56    pub(crate) use self::selector::*;
57
58    #[cfg_attr(all(
59        not(mio_unsupported_force_waker_pipe),
60        any(
61            target_os = "android",
62            target_os = "espidf",
63            target_os = "fuchsia",
64            target_os = "hermit",
65            target_os = "illumos",
66            target_os = "linux",
67        )
68    ), path = "waker/eventfd.rs")]
69    #[cfg_attr(all(
70        not(mio_unsupported_force_waker_pipe),
71        not(mio_unsupported_force_poll_poll), // `kqueue(2)` based waker doesn't work with `poll(2)`.
72        any(
73            target_os = "freebsd",
74            target_os = "ios",
75            target_os = "macos",
76            target_os = "tvos",
77            target_os = "visionos",
78            target_os = "watchos",
79        )
80    ), path = "waker/kqueue.rs")]
81    #[cfg_attr(any(
82        // NOTE: also add to the list for the `pipe` module below.
83        mio_unsupported_force_waker_pipe,
84        all(
85            // `kqueue(2)` based waker doesn't work with `poll(2)`.
86            mio_unsupported_force_poll_poll,
87            any(
88                target_os = "freebsd",
89                target_os = "ios",
90                target_os = "macos",
91                target_os = "tvos",
92                target_os = "visionos",
93                target_os = "watchos",
94            ),
95        ),
96        target_os = "aix",
97        target_os = "dragonfly",
98        target_os = "haiku",
99        target_os = "hurd",
100        target_os = "netbsd",
101        target_os = "nto",
102        target_os = "openbsd",
103        target_os = "redox",
104        target_os = "solaris",
105        target_os = "vita",
106        target_os = "cygwin",
107        all(target_os = "wasi", target_env = "p1")
108    ), path = "waker/pipe.rs")]
109    #[cfg_attr(all(target_os = "wasi", not(target_env = "p1")), path = "waker/single_threaded.rs")]
110    mod waker;
111    // NOTE: the `Waker` type is expected in the selector module as the
112    // `poll(2)` implementation needs to do some special stuff.
113
114    #[cfg(feature = "os-ext")]
115    mod sourcefd;
116    #[cfg(feature = "os-ext")]
117    pub use self::sourcefd::SourceFd;
118
119    cfg_net! {
120        mod net;
121
122        pub(crate) mod tcp;
123        pub(crate) mod udp;
124        #[cfg(not(any(target_os = "hermit", target_os = "wasi")))]
125        pub(crate) mod uds;
126    }
127
128    #[cfg(all(
129        any(
130            // For the public `pipe` module, must match `cfg_os_ext` macro.
131            feature = "os-ext",
132            // For the `Waker` type based on a pipe.
133            mio_unsupported_force_waker_pipe,
134            all(
135                // `kqueue(2)` based waker doesn't work with `poll(2)`.
136                mio_unsupported_force_poll_poll,
137                any(
138                    target_os = "freebsd",
139                    target_os = "ios",
140                    target_os = "macos",
141                    target_os = "tvos",
142                    target_os = "visionos",
143                    target_os = "watchos",
144                ),
145            ),
146            // NOTE: also add to the list for the `pipe` module below.
147            target_os = "aix",
148            target_os = "dragonfly",
149            target_os = "haiku",
150            target_os = "hurd",
151            target_os = "netbsd",
152            target_os = "nto",
153            target_os = "openbsd",
154            target_os = "redox",
155            target_os = "solaris",
156            target_os = "vita",
157            target_os = "cygwin",
158        ),
159        not(target_os = "hermit"),
160        not(target_os = "wasi"),
161    ))]
162    pub(crate) mod pipe;
163}
164
165cfg_not_os_poll! {
166    cfg_os_ext! {
167        mod sourcefd;
168        pub use self::sourcefd::SourceFd;
169    }
170}
mio/sys/unix/mod.rs

mio/sys/unix/
mod.rs
