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.
81 lines
2.6 KiB
Rust
81 lines
2.6 KiB
Rust
// Copyright 2012 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 calls emitted by the compiler.
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use c_str::ToCStr;
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use libc::{c_char, size_t, uintptr_t};
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use rt::borrowck;
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#[cold]
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#[lang="fail_"]
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pub fn fail_(expr: *c_char, file: *c_char, line: size_t) -> ! {
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::rt::begin_unwind_raw(expr, file, line);
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}
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#[cold]
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#[lang="fail_bounds_check"]
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pub fn fail_bounds_check(file: *c_char, line: size_t, index: size_t, len: size_t) -> ! {
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let msg = format!("index out of bounds: the len is {} but the index is {}",
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len as uint, index as uint);
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msg.with_c_str(|buf| fail_(buf, file, line))
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}
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#[lang="malloc"]
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pub unsafe fn local_malloc(td: *c_char, size: uintptr_t) -> *c_char {
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::rt::local_heap::local_malloc(td, size)
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}
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// NB: Calls to free CANNOT be allowed to fail, as throwing an exception from
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// inside a landing pad may corrupt the state of the exception handler. If a
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// problem occurs, call exit instead.
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#[lang="free"]
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pub unsafe fn local_free(ptr: *c_char) {
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::rt::local_heap::local_free(ptr);
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}
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#[lang="borrow_as_imm"]
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#[inline]
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pub unsafe fn borrow_as_imm(a: *u8, file: *c_char, line: size_t) -> uint {
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borrowck::borrow_as_imm(a, file, line)
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}
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#[lang="borrow_as_mut"]
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#[inline]
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pub unsafe fn borrow_as_mut(a: *u8, file: *c_char, line: size_t) -> uint {
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borrowck::borrow_as_mut(a, file, line)
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}
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#[lang="record_borrow"]
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pub unsafe fn record_borrow(a: *u8, old_ref_count: uint,
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file: *c_char, line: size_t) {
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borrowck::record_borrow(a, old_ref_count, file, line)
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}
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#[lang="unrecord_borrow"]
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pub unsafe fn unrecord_borrow(a: *u8, old_ref_count: uint,
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file: *c_char, line: size_t) {
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borrowck::unrecord_borrow(a, old_ref_count, file, line)
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}
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#[lang="return_to_mut"]
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#[inline]
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pub unsafe fn return_to_mut(a: *u8, orig_ref_count: uint,
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file: *c_char, line: size_t) {
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borrowck::return_to_mut(a, orig_ref_count, file, line)
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}
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#[lang="check_not_borrowed"]
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#[inline]
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pub unsafe fn check_not_borrowed(a: *u8,
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file: *c_char,
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line: size_t) {
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borrowck::check_not_borrowed(a, file, line)
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}
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