| 1 | //! Platform-dependent platform abstraction. |
| 2 | //! |
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| 3 | //! The `std::sys` module is the abstracted interface through which |
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| 4 | //! `std` talks to the underlying operating system. It has different |
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| 5 | //! implementations for different operating system families, today |
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| 6 | //! just Unix and Windows, and initial support for Redox. |
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| 7 | //! |
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| 8 | //! The centralization of platform-specific code in this module is |
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| 9 | //! enforced by the "platform abstraction layer" tidy script in |
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| 10 | //! `tools/tidy/src/pal.rs`. |
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| 11 | //! |
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| 12 | //! This module is closely related to the platform-independent system |
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| 13 | //! integration code in `std::sys_common`. See that module's |
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| 14 | //! documentation for details. |
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| 15 | //! |
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| 16 | //! In the future it would be desirable for the independent |
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| 17 | //! implementations of this module to be extracted to their own crates |
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| 18 | //! that `std` can link to, thus enabling their implementation |
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| 19 | //! out-of-tree via crate replacement. Though due to the complex |
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| 20 | //! inter-dependencies within `std` that will be a challenging goal to |
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| 21 | //! achieve. |
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| 22 | |
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| 23 | #![allow (missing_debug_implementations)] |
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| 24 | |
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| 25 | pub mod common; |
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| 26 | |
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| 27 | cfg_if::cfg_if! { |
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| 28 | if #[cfg(unix)] { |
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| 29 | mod unix; |
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| 30 | pub use self::unix::*; |
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| 31 | } else if #[cfg(windows)] { |
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| 32 | mod windows; |
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| 33 | pub use self::windows::*; |
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| 34 | } else if #[cfg(target_os = "solid_asp3" )] { |
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| 35 | mod solid; |
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| 36 | pub use self::solid::*; |
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| 37 | } else if #[cfg(target_os = "hermit" )] { |
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| 38 | mod hermit; |
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| 39 | pub use self::hermit::*; |
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| 40 | } else if #[cfg(target_os = "trusty" )] { |
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| 41 | mod trusty; |
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| 42 | pub use self::trusty::*; |
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| 43 | } else if #[cfg(all(target_os = "wasi" , target_env = "p2" ))] { |
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| 44 | mod wasip2; |
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| 45 | pub use self::wasip2::*; |
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| 46 | } else if #[cfg(target_os = "wasi" )] { |
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| 47 | mod wasi; |
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| 48 | pub use self::wasi::*; |
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| 49 | } else if #[cfg(target_family = "wasm" )] { |
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| 50 | mod wasm; |
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| 51 | pub use self::wasm::*; |
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| 52 | } else if #[cfg(target_os = "xous" )] { |
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| 53 | mod xous; |
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| 54 | pub use self::xous::*; |
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| 55 | } else if #[cfg(target_os = "uefi" )] { |
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| 56 | mod uefi; |
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| 57 | pub use self::uefi::*; |
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| 58 | } else if #[cfg(all(target_vendor = "fortanix" , target_env = "sgx" ))] { |
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| 59 | mod sgx; |
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| 60 | pub use self::sgx::*; |
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| 61 | } else if #[cfg(target_os = "teeos" )] { |
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| 62 | mod teeos; |
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| 63 | pub use self::teeos::*; |
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| 64 | } else if #[cfg(target_os = "zkvm" )] { |
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| 65 | mod zkvm; |
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| 66 | pub use self::zkvm::*; |
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| 67 | } else { |
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| 68 | mod unsupported; |
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| 69 | pub use self::unsupported::*; |
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| 70 | } |
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| 71 | } |
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| 72 | |
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| 73 | cfg_if::cfg_if! { |
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| 74 | // Fuchsia components default to full backtrace. |
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| 75 | if #[cfg(target_os = "fuchsia" )] { |
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| 76 | pub const FULL_BACKTRACE_DEFAULT: bool = true; |
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| 77 | } else { |
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| 78 | pub const FULL_BACKTRACE_DEFAULT: bool = false; |
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| 79 | } |
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| 80 | } |
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| 81 | |
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| 82 | #[cfg (not(target_os = "uefi" ))] |
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| 83 | pub type RawOsError = i32; |
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| 84 | |
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