52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
// Routines useful when debugging the Rust runtime.
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#include "rust_abi.h"
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#include "rust_debug.h"
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#include "rust_internal.h"
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#include <iostream>
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#include <string>
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#include <sstream>
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#include <stdint.h>
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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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