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Add test to ensure that atomic types are lock-free

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This commit is contained in:
Amanieu d'Antras 2016-04-17 12:49:26 +01:00
parent 97216a6ce5
commit 03dd9b87cb
2 changed files with 92 additions and 0 deletions
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30
src/test/run-make/atomic-lock-free/Makefile Normal file
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-include ../tools.mk
# This tests ensure that atomic types are never lowered into runtime library calls that are not
# guaranteed to be lock-free.
all:
ifeq ($(UNAME),Linux)
$(RUSTC) --target=i686-unknown-linux-gnu atomic_lock_free.rs
nm "$(TMPDIR)/libatomic_lock_free.rlib" | grep -vq __atomic_fetch_add
$(RUSTC) --target=x86_64-unknown-linux-gnu atomic_lock_free.rs
nm "$(TMPDIR)/libatomic_lock_free.rlib" | grep -vq __atomic_fetch_add
$(RUSTC) --target=arm-unknown-linux-gnueabi atomic_lock_free.rs
nm "$(TMPDIR)/libatomic_lock_free.rlib" | grep -vq __atomic_fetch_add
$(RUSTC) --target=arm-unknown-linux-gnueabihf atomic_lock_free.rs
nm "$(TMPDIR)/libatomic_lock_free.rlib" | grep -vq __atomic_fetch_add
$(RUSTC) --target=armv7-unknown-linux-gnueabihf atomic_lock_free.rs
nm "$(TMPDIR)/libatomic_lock_free.rlib" | grep -vq __atomic_fetch_add
$(RUSTC) --target=aarch64-unknown-linux-gnu atomic_lock_free.rs
nm "$(TMPDIR)/libatomic_lock_free.rlib" | grep -vq __atomic_fetch_add
$(RUSTC) --target=mips-unknown-linux-gnu atomic_lock_free.rs
nm "$(TMPDIR)/libatomic_lock_free.rlib" | grep -vq __atomic_fetch_add
$(RUSTC) --target=mipsel-unknown-linux-gnu atomic_lock_free.rs
nm "$(TMPDIR)/libatomic_lock_free.rlib" | grep -vq __atomic_fetch_add
$(RUSTC) --target=powerpc-unknown-linux-gnu atomic_lock_free.rs
nm "$(TMPDIR)/libatomic_lock_free.rlib" | grep -vq __atomic_fetch_add
$(RUSTC) --target=powerpc64-unknown-linux-gnu atomic_lock_free.rs
nm "$(TMPDIR)/libatomic_lock_free.rlib" | grep -vq __atomic_fetch_add
$(RUSTC) --target=powerpc64le-unknown-linux-gnu atomic_lock_free.rs
nm "$(TMPDIR)/libatomic_lock_free.rlib" | grep -vq __atomic_fetch_add
endif

62
src/test/run-make/atomic-lock-free/atomic_lock_free.rs Normal file
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// Copyright 2016 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.
#![feature(cfg_target_has_atomic, no_core, intrinsics, lang_items)]
#![crate_type="rlib"]
#![no_core]
extern "rust-intrinsic" {
fn atomic_xadd<T>(dst: *mut T, src: T) -> T;
}
#[lang = "sized"]
trait Sized {}
#[cfg(target_has_atomic = "8")]
pub unsafe fn atomic_u8(x: *mut u8) {
atomic_xadd(x, 1);
atomic_xadd(x, 1);
}
#[cfg(target_has_atomic = "8")]
pub unsafe fn atomic_i8(x: *mut i8) {
atomic_xadd(x, 1);
}
#[cfg(target_has_atomic = "16")]
pub unsafe fn atomic_u16(x: *mut u16) {
atomic_xadd(x, 1);
}
#[cfg(target_has_atomic = "16")]
pub unsafe fn atomic_i16(x: *mut i16) {
atomic_xadd(x, 1);
}
#[cfg(target_has_atomic = "32")]
pub unsafe fn atomic_u32(x: *mut u32) {
atomic_xadd(x, 1);
}
#[cfg(target_has_atomic = "32")]
pub unsafe fn atomic_i32(x: *mut i32) {
atomic_xadd(x, 1);
}
#[cfg(target_has_atomic = "64")]
pub unsafe fn atomic_u64(x: *mut u64) {
atomic_xadd(x, 1);
}
#[cfg(target_has_atomic = "64")]
pub unsafe fn atomic_i64(x: *mut i64) {
atomic_xadd(x, 1);
}
#[cfg(target_has_atomic = "ptr")]
pub unsafe fn atomic_usize(x: *mut usize) {
atomic_xadd(x, 1);
}
#[cfg(target_has_atomic = "ptr")]
pub unsafe fn atomic_isize(x: *mut isize) {
atomic_xadd(x, 1);
}