     1
     2
     3
     4
     5
     6
     7
     8
     9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69

    // Copyright 2017 The Rust Project Developers. See the COPYRIGHT
    // file at the top-level directory of this distribution and at
    // http://rust-lang.org/COPYRIGHT.
    //
    // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
    // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
    // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
    // option. This file may not be copied, modified, or distributed
    // except according to those terms.

    //! dox

    #![unstable(issue = "32838", feature = "allocator_api")]

    #[doc(inline)] #[allow(deprecated)] pub use alloc_crate::alloc::Heap;
    #[doc(inline)] pub use alloc_crate::alloc::{Global, oom};
    #[doc(inline)] pub use alloc_system::System;
    #[doc(inline)] pub use core::alloc::*;

    #[cfg(not(test))]
    #[doc(hidden)]
    #[lang = "oom"]
    pub extern fn rust_oom() -> ! {
        rtabort!("memory allocation failed");
    }

    #[cfg(not(test))]
    #[doc(hidden)]
    #[allow(unused_attributes)]
    pub mod __default_lib_allocator {
        use super::{System, Layout, GlobalAlloc, Opaque};
        // for symbol names src/librustc/middle/allocator.rs
        // for signatures src/librustc_allocator/lib.rs

        // linkage directives are provided as part of the current compiler allocator
        // ABI

        #[no_mangle]
        #[rustc_std_internal_symbol]
        pub unsafe extern fn __rdl_alloc(size: usize, align: usize) -> *mut u8 {
            let layout = Layout::from_size_align_unchecked(size, align);
            System.alloc(layout) as *mut u8
        }

        #[no_mangle]
        #[rustc_std_internal_symbol]
        pub unsafe extern fn __rdl_dealloc(ptr: *mut u8,
                                           size: usize,
                                           align: usize) {
            System.dealloc(ptr as *mut Opaque, Layout::from_size_align_unchecked(size, align))
        }

        #[no_mangle]
        #[rustc_std_internal_symbol]
        pub unsafe extern fn __rdl_realloc(ptr: *mut u8,
                                           old_size: usize,
                                           align: usize,
                                           new_size: usize) -> *mut u8 {
            let old_layout = Layout::from_size_align_unchecked(old_size, align);
            System.realloc(ptr as *mut Opaque, old_layout, new_size) as *mut u8
        }

        #[no_mangle]
        #[rustc_std_internal_symbol]
        pub unsafe extern fn __rdl_alloc_zeroed(size: usize, align: usize) -> *mut u8 {
            let layout = Layout::from_size_align_unchecked(size, align);
            System.alloc_zeroed(layout) as *mut u8
        }
    }

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g. `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g. `vec -> usize` or `* -> vec`)

Search multiple things at once by splitting your query with comma (e.g. `str,u8` or `String,struct:Vec,test`)