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// Copyright 2013 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.
use vec;
pub struct StackSegment {
buf: ~[u8]
}
pub impl StackSegment {
fn new(size: uint) -> StackSegment {
// Crate a block of uninitialized values
let mut stack = vec::with_capacity(size);
unsafe {
vec::raw::set_len(&mut stack, size);
}
StackSegment {
buf: stack
}
}
/// Point one word beyond the high end of the allocated stack
fn end(&self) -> *uint {
unsafe {
vec::raw::to_ptr(self.buf).offset(self.buf.len()) as *uint
}
}
}
pub struct StackPool(());
impl StackPool {
pub fn new() -> StackPool { StackPool(()) }
fn take_segment(&self, min_size: uint) -> StackSegment {
StackSegment::new(min_size)
}
fn give_segment(&self, _stack: StackSegment) {
}
}
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