62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
// 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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// Routines useful when debugging the Rust runtime.
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#include "rust_globals.h"
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#include "rust_abi.h"
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#include "rust_debug.h"
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#include "rust_task.h"
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#include <iostream>
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#include <string>
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#include <sstream>
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namespace {
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debug::flag track_origins("RUST_TRACK_ORIGINS");
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} // end anonymous namespace
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namespace debug {
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void
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maybe_track_origin(rust_task *task, void *ptr) {
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if (!*track_origins)
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return;
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task->debug.origins[ptr] =
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stack_walk::symbolicate(stack_walk::backtrace());
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}
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void
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maybe_untrack_origin(rust_task *task, void *ptr) {
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if (!*track_origins)
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return;
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task->debug.origins.erase(ptr);
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}
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// This function is intended to be called by the debugger.
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void
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dump_origin(rust_task *task, void *ptr) {
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if (!*track_origins) {
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std::cerr << "Try again with RUST_TRACK_ORIGINS=1." << std::endl;
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} else if (task->debug.origins.find(ptr) == task->debug.origins.end()) {
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std::cerr << "Pointer " << std::hex << (uintptr_t)ptr <<
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" does not have a tracked origin." << std::endl;
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} else {
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std::cerr << "Origin of pointer " << std::hex << (uintptr_t)ptr <<
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":" << std::endl << task->debug.origins[ptr] <<
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std::endl;
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}
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}
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} // end namespace debug
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