e348cacc6d
Check TracerPid in /proc/self/status for attached debugger. Add SIGTRAP handler to prevent signal from halting app while not running in a debugger. Log DebugPrint in clog (stderr).
61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2017 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#include "xenia/base/debugging.h"
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#include <csignal>
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#include <cstdarg>
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#include <fstream>
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#include <iostream>
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#include <mutex>
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#include <sstream>
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#include "xenia/base/string_buffer.h"
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namespace xe {
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namespace debugging {
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bool IsDebuggerAttached() {
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std::ifstream proc_status_stream("/proc/self/status");
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if (!proc_status_stream.is_open()) {
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return false;
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}
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std::string line;
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while (std::getline(proc_status_stream, line)) {
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std::istringstream line_stream(line);
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std::string key;
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line_stream >> key;
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if (key == "TracerPid:") {
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uint32_t tracer_pid;
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line_stream >> tracer_pid;
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return tracer_pid != 0;
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}
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}
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return false;
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}
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void Break() {
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static std::once_flag flag;
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std::call_once(flag, []() {
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// Install handler for sigtrap only once
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std::signal(SIGTRAP, [](int) {
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// Forward signal to default handler after being caught
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std::signal(SIGTRAP, SIG_DFL);
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});
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});
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std::raise(SIGTRAP);
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}
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namespace internal {
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void DebugPrint(const char* s) { std::clog << s << std::endl; }
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} // namespace internal
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} // namespace debugging
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} // namespace xe
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