Make SignalSet::termination work for all targets

Conditionally enables signals if they're available. This would make for an amazing use case of `#[cfg(accessible(...))]`. See rust-lang/rust#64797 for info on this.
nvzqz · Feb 5, 2020 · 197e35f · 197e35f
1 parent 059066a
commit 197e35f
Showing 1 changed file with 67 additions and 10 deletions.
diff --git a/src/unix/signal_set.rs b/src/unix/signal_set.rs
@@ -77,19 77,76 @@ impl SignalSet {
 
  /// Creates a new set of signals that result in process termination.
  ///
- /// The included signals are only those that can be gracefully handled.
  /// This only includes signals that can be trivially handled with grace:
  /// - [`alarm`](#method.alarm)
  /// - [`hangup`](#method.hangup)
  /// - [`interrupt`](#method.interrupt)
  /// - [`pipe`](#method.pipe)
  /// - [`quit`](#method.quit)
  /// - [`terminate`](#method.terminate)
  /// - [`user_defined_1`](#method.user_defined_1)
  /// - [`user_defined_2`](#method.user_defined_2)
  ///
  /// If a listed signal is not available for the current target, the returned
  /// set will simply not include it.
  #[inline]
  #[must_use]
  pub const fn termination() -> Self {
- Self::new()
- .alarm()
- .hangup()
- .interrupt()
- .pipe()
- .quit()
- .terminate()
- .user_defined_1()
- .user_defined_2()
  #[allow(unused_mut)]
  let mut set = Self::new();
 
  // This would make for an amazing use case of `#[cfg(accessible(...))]`.
  // See https://github.com/rust-lang/rust/issues/64797 for info on this.
  #[cfg(any(
  // According to `libc`:
  // "bsd"
  target_os = "macos",
  target_os = "ios",
  target_os = "freebsd",
  target_os = "dragonfly",
  target_os = "openbsd",
  target_os = "netbsd",
  // "linux-like"
  target_os = "linux",
  target_os = "android",
  target_os = "emscripten",
  // "solarish"
  target_os = "solaris",
  target_os = "illumos",
  // Uncategorized
  windows,
  target_os = "fuchsia",
  target_os = "redox",
  target_os = "haiku",
  target_os = "hermit",
  target_os = "vxworks",
  target_env = "uclibc",
  ))]
  {
  #[cfg(not(windows))]
  {
  set = set.alarm().hangup().pipe().quit();
  }
 
  #[cfg(any(
  not(target_env = "uclibc"),
  all(
  target_env = "uclibc",
  any(
  target_arch = "arm",
  target_arch = "mips",
  target_arch = "mips64",
  ),
  ),
  ))]
  {
  set = set.user_defined_1().user_defined_2();
  }
 
  set = set.interrupt().terminate();
  }
 
  set
  }
 
  /// Converts `self` into a raw signal set.