6965fe4bce
I believe this patch incorporates all expected syntax changes from extern function reform (#3678). You can now write things like: extern "<abi>" fn foo(s: S) -> T { ... } extern "<abi>" mod { ... } extern "<abi>" fn(S) -> T The ABI for foreign functions is taken from this syntax (rather than from an annotation). We support the full ABI specification I described on the mailing list. The correct ABI is chosen based on the target architecture. Calls by pointer to C functions are not yet supported, and the Rust type of crust fns is still *u8.
43 lines
1.3 KiB
Rust
43 lines
1.3 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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pub type HANDLE = u32;
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pub type DWORD = u32;
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pub type SIZE_T = u32;
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pub type LPVOID = uint;
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pub type BOOL = u8;
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mod kernel32 {
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use super::{HANDLE, DWORD, SIZE_T, LPVOID, BOOL};
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#[cfg(target_os = "win32")]
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#[abi = "stdcall"]
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pub extern "stdcall" {
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pub fn GetProcessHeap() -> HANDLE;
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pub fn HeapAlloc(hHeap: HANDLE, dwFlags: DWORD, dwBytes: SIZE_T)
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-> LPVOID;
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pub fn HeapFree(hHeap: HANDLE, dwFlags: DWORD, lpMem: LPVOID) -> BOOL;
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}
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}
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#[cfg(target_os = "win32")]
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pub fn main() {
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let heap = unsafe { kernel32::GetProcessHeap() };
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let mem = unsafe { kernel32::HeapAlloc(heap, 0u32, 100u32) };
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assert!(mem != 0u);
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let res = unsafe { kernel32::HeapFree(heap, 0u32, mem) };
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assert!(res != 0u8);
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}
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#[cfg(target_os = "macos")]
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#[cfg(target_os = "linux")]
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#[cfg(target_os = "freebsd")]
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pub fn main() { }
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