90 lines
3.0 KiB
C++
90 lines
3.0 KiB
C++
#ifdef CPPTRACE_GET_SYMBOLS_WITH_LIBBACKTRACE
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#include <cpptrace/cpptrace.hpp>
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#include "cpptrace_symbols.hpp"
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#include "../platform/cpptrace_program_name.hpp"
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#include <memory>
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#include <vector>
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#ifdef CPPTRACE_BACKTRACE_PATH
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#include CPPTRACE_BACKTRACE_PATH
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#else
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#include <backtrace.h>
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#endif
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namespace cpptrace {
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namespace detail {
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int full_callback(void* data, uintptr_t address, const char* file, int line, const char* symbol) {
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stacktrace_frame& frame = *static_cast<stacktrace_frame*>(data);
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if(line == 0) {
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///fprintf(stderr, "Getting bad data for some reason\n"); // TODO: Eliminate
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}
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frame.address = address;
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frame.line = line;
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frame.filename = file ? file : "";
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frame.symbol = symbol ? symbol : "";
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return 0;
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}
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void syminfo_callback(void* data, uintptr_t address, const char* symbol, uintptr_t, uintptr_t) {
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stacktrace_frame& frame = *static_cast<stacktrace_frame*>(data);
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frame.address = address;
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frame.line = 0;
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frame.filename = "";
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frame.symbol = symbol ? symbol : "";
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}
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void error_callback(void* data, const char* msg, int errnum) {
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// nothing at the moment
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///fprintf(stderr, "Backtrace error %s %d %p\n", msg, errnum, data); // TODO: Eliminate
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}
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backtrace_state* get_backtrace_state() {
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// backtrace_create_state must be called only one time per program
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static backtrace_state* state = nullptr;
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static bool called = false;
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if(!called) {
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state = backtrace_create_state(program_name(), true, error_callback, nullptr);
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called = true;
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}
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return state;
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}
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// TODO: Handle backtrace_pcinfo calling the callback multiple times on inlined functions
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struct symbolizer::impl {
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stacktrace_frame resolve_frame(void* addr) {
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stacktrace_frame frame;
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frame.col = -1;
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backtrace_pcinfo(
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get_backtrace_state(),
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reinterpret_cast<uintptr_t>(addr),
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full_callback,
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error_callback,
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&frame
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);
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if(frame.symbol.empty()) {
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// fallback, try to at least recover the symbol name with backtrace_syminfo
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backtrace_syminfo(
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get_backtrace_state(),
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reinterpret_cast<uintptr_t>(addr),
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syminfo_callback,
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error_callback,
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&frame
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);
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}
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return frame;
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}
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};
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symbolizer::symbolizer() : pimpl{new impl} {}
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symbolizer::~symbolizer() = default;
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stacktrace_frame symbolizer::resolve_frame(void* addr) {
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return pimpl->resolve_frame(addr);
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}
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}
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}
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#endif
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