93 lines
2.4 KiB
Rust
93 lines
2.4 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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//! Unsafe debugging functions for inspecting values.
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use core::cast::reinterpret_cast;
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use core::ptr;
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use core::sys;
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pub mod rustrt {
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use core::sys;
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#[abi = "cdecl"]
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pub extern {
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pub unsafe fn debug_tydesc(td: *sys::TypeDesc);
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pub unsafe fn debug_opaque(td: *sys::TypeDesc, x: *());
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pub unsafe fn debug_box(td: *sys::TypeDesc, x: *());
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pub unsafe fn debug_tag(td: *sys::TypeDesc, x: *());
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pub unsafe fn debug_fn(td: *sys::TypeDesc, x: *());
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pub unsafe fn debug_ptrcast(td: *sys::TypeDesc, x: *()) -> *();
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pub unsafe fn rust_dbg_breakpoint();
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}
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}
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pub fn debug_tydesc<T>() {
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unsafe {
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rustrt::debug_tydesc(sys::get_type_desc::<T>());
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}
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}
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pub fn debug_opaque<T>(x: T) {
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unsafe {
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rustrt::debug_opaque(sys::get_type_desc::<T>(),
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ptr::addr_of(&x) as *());
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}
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}
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pub fn debug_box<T>(x: @T) {
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unsafe {
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rustrt::debug_box(sys::get_type_desc::<T>(),
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ptr::addr_of(&x) as *());
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}
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}
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pub fn debug_tag<T>(x: T) {
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unsafe {
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rustrt::debug_tag(sys::get_type_desc::<T>(),
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ptr::addr_of(&x) as *());
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}
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}
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pub fn debug_fn<T>(x: T) {
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unsafe {
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rustrt::debug_fn(sys::get_type_desc::<T>(),
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ptr::addr_of(&x) as *());
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}
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}
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pub unsafe fn ptr_cast<T, U>(x: @T) -> @U {
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reinterpret_cast(
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&rustrt::debug_ptrcast(sys::get_type_desc::<T>(),
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reinterpret_cast(&x)))
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}
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/// Triggers a debugger breakpoint
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pub fn breakpoint() {
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unsafe {
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rustrt::rust_dbg_breakpoint();
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}
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}
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#[test]
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fn test_breakpoint_should_not_abort_process_when_not_under_gdb() {
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// Triggering a breakpoint involves raising SIGTRAP, which terminates
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// the process under normal circumstances
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breakpoint();
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}
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// Local Variables:
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// mode: rust;
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// fill-column: 78;
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// indent-tabs-mode: nil
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// c-basic-offset: 4
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// buffer-file-coding-system: utf-8-unix
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// End:
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