2b92962aa2
- Make `extern fn()` assignable to any closure type, rather than a subtype. - Remove unused int_ty_set and float_ty_set - Refactor variable unification and make it more DRY - Do fn sub/lub/glb on the level of fn_sig - Rename infer::to_str::ToStr to infer::to_str::InferStr - Capitalize names of various types - Correct hashing of FnMeta - Convert various records-of-fns into structs-of-fns. This is both eliminating use of deprecated features and more forwards compatible with fn reform. r=pcwalton
104 lines
2.3 KiB
Rust
104 lines
2.3 KiB
Rust
// Copyright 2012 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.
|
|
|
|
#[doc(hidden)]; // FIXME #3538
|
|
|
|
#[legacy_modes]; // tjc: remove after snapshot
|
|
|
|
// NB: transitionary, de-mode-ing.
|
|
// XXX: Can't forbid this because frame_address needs a deprecated mode.
|
|
#[allow(deprecated_mode)];
|
|
#[forbid(deprecated_pattern)];
|
|
|
|
use cast::reinterpret_cast;
|
|
use ptr::offset;
|
|
use sys::size_of;
|
|
|
|
pub type Word = uint;
|
|
|
|
pub struct Frame {
|
|
fp: *Word
|
|
}
|
|
|
|
pub fn Frame(fp: *Word) -> Frame {
|
|
Frame {
|
|
fp: fp
|
|
}
|
|
}
|
|
|
|
pub fn walk_stack(visit: fn(Frame) -> bool) {
|
|
|
|
debug!("beginning stack walk");
|
|
|
|
do frame_address |frame_pointer| {
|
|
let mut frame_address: *Word = unsafe {
|
|
reinterpret_cast(&frame_pointer)
|
|
};
|
|
loop {
|
|
let fr = Frame(frame_address);
|
|
|
|
debug!("frame: %x", unsafe { reinterpret_cast(&fr.fp) });
|
|
visit(fr);
|
|
|
|
unsafe {
|
|
let next_fp: **Word = reinterpret_cast(&frame_address);
|
|
frame_address = *next_fp;
|
|
if *frame_address == 0u {
|
|
debug!("encountered task_start_wrapper. ending walk");
|
|
// This is the task_start_wrapper_frame. There is
|
|
// no stack beneath it and it is a foreign frame.
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_simple() {
|
|
for walk_stack |_frame| {
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_simple_deep() {
|
|
fn run(i: int) {
|
|
if i == 0 { return }
|
|
|
|
for walk_stack |_frame| {
|
|
unsafe {
|
|
breakpoint();
|
|
}
|
|
}
|
|
run(i - 1);
|
|
}
|
|
|
|
run(10);
|
|
}
|
|
|
|
fn breakpoint() {
|
|
rustrt::rust_dbg_breakpoint()
|
|
}
|
|
|
|
fn frame_address(f: fn(++x: *u8)) {
|
|
rusti::frame_address(f)
|
|
}
|
|
|
|
extern mod rustrt {
|
|
#[legacy_exports];
|
|
fn rust_dbg_breakpoint();
|
|
}
|
|
|
|
#[abi = "rust-intrinsic"]
|
|
extern mod rusti {
|
|
#[legacy_exports];
|
|
fn frame_address(f: &once fn(++x: *u8));
|
|
}
|