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// 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.
// aux-build:custom.rs
// aux-build:helper.rs
// no-prefer-dynamic
#![feature(global_allocator, heap_api, allocator_api)]
extern crate custom;
extern crate helper;
use std::heap::{Heap, Alloc, System, Layout};
use std::sync::atomic::{Ordering, ATOMIC_USIZE_INIT};
#[global_allocator]
static GLOBAL: custom::A = custom::A(ATOMIC_USIZE_INIT);
fn main() {
unsafe {
let n = GLOBAL.0.load(Ordering::SeqCst);
let layout = Layout::from_size_align(4, 2).unwrap();
let ptr = Heap.alloc(layout.clone()).unwrap();
helper::work_with(&ptr);
assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 1);
Heap.dealloc(ptr, layout.clone());
assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 2);
let ptr = System.alloc(layout.clone()).unwrap();
assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 2);
helper::work_with(&ptr);
System.dealloc(ptr, layout);
assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 2);
}
}
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