51abdee5f1
This extracts everything related to green scheduling from libstd and introduces a new libgreen crate. This mostly involves deleting most of std::rt and moving it to libgreen. Along with the movement of code, this commit rearchitects many functions in the scheduler in order to adapt to the fact that Local::take now *only* works on a Task, not a scheduler. This mostly just involved threading the current green task through in a few locations, but there were one or two spots where things got hairy. There are a few repercussions of this commit: * tube/rc have been removed (the runtime implementation of rc) * There is no longer a "single threaded" spawning mode for tasks. This is now encompassed by 1:1 scheduling + communication. Convenience methods have been introduced that are specific to libgreen to assist in the spawning of pools of schedulers.
55 lines
1.5 KiB
Rust
55 lines
1.5 KiB
Rust
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//! Runtime environment settings
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use from_str::FromStr;
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use option::{Some, None};
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use os;
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// Note that these are all accessed without any synchronization.
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// They are expected to be initialized once then left alone.
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static mut MIN_STACK: uint = 2 * 1024 * 1024;
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static mut DEBUG_BORROW: bool = false;
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static mut POISON_ON_FREE: bool = false;
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pub fn init() {
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unsafe {
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match os::getenv("RUST_MIN_STACK") {
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Some(s) => match FromStr::from_str(s) {
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Some(i) => MIN_STACK = i,
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None => ()
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},
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None => ()
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}
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match os::getenv("RUST_DEBUG_BORROW") {
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Some(_) => DEBUG_BORROW = true,
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None => ()
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}
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match os::getenv("RUST_POISON_ON_FREE") {
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Some(_) => POISON_ON_FREE = true,
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None => ()
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}
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}
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}
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pub fn min_stack() -> uint {
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unsafe { MIN_STACK }
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}
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pub fn debug_borrow() -> bool {
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unsafe { DEBUG_BORROW }
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}
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pub fn poison_on_free() -> bool {
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unsafe { POISON_ON_FREE }
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}
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