blob: 94f56d42613fd7ee26158db6bb4df7ec6fd8e44b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
// 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.
//! Runtime environment settings
use from_str::from_str;
use option::{Some, None};
use os;
// Note that these are all accessed without any synchronization.
// They are expected to be initialized once then left alone.
static mut MIN_STACK: uint = 2 * 1024 * 1024;
/// This default corresponds to 20M of cache per scheduler (at the default size).
static mut MAX_CACHED_STACKS: uint = 10;
static mut DEBUG_BORROW: bool = false;
pub fn init() {
unsafe {
match os::getenv("RUST_MIN_STACK") {
Some(s) => match from_str(s) {
Some(i) => MIN_STACK = i,
None => ()
},
None => ()
}
match os::getenv("RUST_MAX_CACHED_STACKS") {
Some(max) => MAX_CACHED_STACKS = from_str(max).expect("expected positive integer in \
RUST_MAX_CACHED_STACKS"),
None => ()
}
match os::getenv("RUST_DEBUG_BORROW") {
Some(_) => DEBUG_BORROW = true,
None => ()
}
}
}
pub fn min_stack() -> uint {
unsafe { MIN_STACK }
}
pub fn max_cached_stacks() -> uint {
unsafe { MAX_CACHED_STACKS }
}
pub fn debug_borrow() -> bool {
unsafe { DEBUG_BORROW }
}
|
