84 lines
1.8 KiB
C++
84 lines
1.8 KiB
C++
// Routines useful when debugging the Rust runtime.
|
|
|
|
#include "rust_debug.h"
|
|
#include "rust_internal.h"
|
|
|
|
#include <iostream>
|
|
#include <string>
|
|
#include <sstream>
|
|
#include <stdint.h>
|
|
|
|
#if defined(__APPLE__) || defined(__linux__)
|
|
#define HAVE_BACKTRACE
|
|
#include <execinfo.h>
|
|
#elif defined(_WIN32)
|
|
#include <windows.h>
|
|
#endif
|
|
|
|
namespace {
|
|
|
|
debug::flag track_origins("RUST_TRACK_ORIGINS");
|
|
|
|
} // end anonymous namespace
|
|
|
|
namespace debug {
|
|
|
|
#ifdef HAVE_BACKTRACE
|
|
std::string
|
|
backtrace() {
|
|
void *call_stack[128];
|
|
int n_frames = ::backtrace(call_stack, 128);
|
|
char **syms = backtrace_symbols(call_stack, n_frames);
|
|
|
|
std::cerr << "n_frames: " << n_frames << std::endl;
|
|
|
|
std::stringstream ss;
|
|
for (int i = 0; i < n_frames; i++) {
|
|
std::cerr << syms[i] << std::endl;
|
|
ss << syms[i] << std::endl;
|
|
}
|
|
|
|
free(syms);
|
|
|
|
return ss.str();
|
|
}
|
|
#else
|
|
std::string
|
|
backtrace() {
|
|
std::string s;
|
|
return s;
|
|
}
|
|
#endif
|
|
|
|
void
|
|
maybe_track_origin(rust_task *task, void *ptr) {
|
|
if (!*track_origins)
|
|
return;
|
|
task->debug.origins[ptr] = backtrace();
|
|
}
|
|
|
|
void
|
|
maybe_untrack_origin(rust_task *task, void *ptr) {
|
|
if (!*track_origins)
|
|
return;
|
|
task->debug.origins.erase(ptr);
|
|
}
|
|
|
|
// This function is intended to be called by the debugger.
|
|
void
|
|
dump_origin(rust_task *task, void *ptr) {
|
|
if (!*track_origins) {
|
|
std::cerr << "Try again with RUST_TRACK_ORIGINS=1." << std::endl;
|
|
} else if (task->debug.origins.find(ptr) == task->debug.origins.end()) {
|
|
std::cerr << "Pointer " << std::hex << (uintptr_t)ptr <<
|
|
" does not have a tracked origin." << std::endl;
|
|
} else {
|
|
std::cerr << "Origin of pointer " << std::hex << (uintptr_t)ptr <<
|
|
":" << std::endl << task->debug.origins[ptr] <<
|
|
std::endl;
|
|
}
|
|
}
|
|
|
|
} // end namespace debug
|
|
|