05b6a2f59c
Some extern blobs are duplicated without "stdcall" abi, since Win64 does not use any calling convention. (Giving any abi to them causes llvm producing wrong bytecode.)
120 lines
3.0 KiB
Rust
120 lines
3.0 KiB
Rust
// Copyright 2013 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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use libc::c_void;
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#[cfg(unix)]
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use libc::c_int;
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#[cfg(unix)]
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use ptr::null;
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#[cfg(windows)]
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use libc::types::os::arch::extra::{DWORD, LPVOID, BOOL};
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#[cfg(unix)]
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pub type Key = pthread_key_t;
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#[cfg(unix)]
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#[fixed_stack_segment]
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#[inline(never)]
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pub unsafe fn create(key: &mut Key) {
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assert_eq!(0, pthread_key_create(key, null()));
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}
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#[cfg(unix)]
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#[fixed_stack_segment]
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#[inline(never)]
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pub unsafe fn set(key: Key, value: *mut c_void) {
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assert_eq!(0, pthread_setspecific(key, value));
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}
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#[cfg(unix)]
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#[fixed_stack_segment]
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#[inline(never)]
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pub unsafe fn get(key: Key) -> *mut c_void {
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pthread_getspecific(key)
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}
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#[cfg(target_os="macos")]
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#[allow(non_camel_case_types)] // foreign type
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type pthread_key_t = ::libc::c_ulong;
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#[cfg(target_os="linux")]
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#[cfg(target_os="freebsd")]
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#[cfg(target_os="android")]
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#[allow(non_camel_case_types)] // foreign type
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type pthread_key_t = ::libc::c_uint;
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#[cfg(unix)]
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extern {
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#[fast_ffi]
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fn pthread_key_create(key: *mut pthread_key_t, dtor: *u8) -> c_int;
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#[fast_ffi]
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fn pthread_setspecific(key: pthread_key_t, value: *mut c_void) -> c_int;
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#[fast_ffi]
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fn pthread_getspecific(key: pthread_key_t) -> *mut c_void;
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}
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#[cfg(windows)]
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pub type Key = DWORD;
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#[cfg(windows)]
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#[fixed_stack_segment]
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#[inline(never)]
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pub unsafe fn create(key: &mut Key) {
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static TLS_OUT_OF_INDEXES: DWORD = 0xFFFFFFFF;
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*key = TlsAlloc();
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assert!(*key != TLS_OUT_OF_INDEXES);
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}
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#[cfg(windows)]
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#[fixed_stack_segment]
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#[inline(never)]
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pub unsafe fn set(key: Key, value: *mut c_void) {
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assert!(0 != TlsSetValue(key, value))
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}
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#[cfg(windows)]
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#[fixed_stack_segment]
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#[inline(never)]
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pub unsafe fn get(key: Key) -> *mut c_void {
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TlsGetValue(key)
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}
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#[cfg(windows, target_arch = "x86")]
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#[abi = "stdcall"]
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extern "stdcall" {
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fn TlsAlloc() -> DWORD;
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fn TlsSetValue(dwTlsIndex: DWORD, lpTlsvalue: LPVOID) -> BOOL;
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fn TlsGetValue(dwTlsIndex: DWORD) -> LPVOID;
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}
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#[cfg(windows, target_arch = "x86_64")]
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extern {
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fn TlsAlloc() -> DWORD;
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fn TlsSetValue(dwTlsIndex: DWORD, lpTlsvalue: LPVOID) -> BOOL;
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fn TlsGetValue(dwTlsIndex: DWORD) -> LPVOID;
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}
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#[test]
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fn tls_smoke_test() {
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use cast::transmute;
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unsafe {
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let mut key = 0;
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let value = ~20;
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create(&mut key);
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set(key, transmute(value));
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let value: ~int = transmute(get(key));
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assert_eq!(value, ~20);
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let value = ~30;
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set(key, transmute(value));
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let value: ~int = transmute(get(key));
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assert_eq!(value, ~30);
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}
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}
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