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//@ run-pass
//@ aux-build:custom.rs
//@ aux-build:helper.rs
//@ no-prefer-dynamic
#![feature(allocator_api)]
#![feature(slice_ptr_get)]
extern crate custom;
extern crate helper;
use std::alloc::{Allocator, Global, Layout, System};
use std::sync::atomic::{AtomicUsize, Ordering};
#[global_allocator]
static GLOBAL: custom::A = custom::A(AtomicUsize::new(0));
fn main() {
unsafe {
let n = GLOBAL.0.load(Ordering::SeqCst);
let layout = Layout::from_size_align(4, 2).unwrap();
let memory = Global.allocate(layout.clone()).unwrap();
helper::work_with(&memory);
assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 1);
Global.deallocate(memory.as_non_null_ptr(), layout);
assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 2);
let memory = System.allocate(layout.clone()).unwrap();
assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 2);
helper::work_with(&memory);
System.deallocate(memory.as_non_null_ptr(), layout);
assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 2);
}
}
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