/*************************************************************************/ /* remote_debugger.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ /* "Software"), to deal in the Software without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of the Software, and to */ /* permit persons to whom the Software is furnished to do so, subject to */ /* the following conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /*************************************************************************/ #include "remote_debugger.h" #include "core/config/project_settings.h" #include "core/debugger/debugger_marshalls.h" #include "core/debugger/engine_debugger.h" #include "core/debugger/engine_profiler.h" #include "core/debugger/script_debugger.h" #include "core/input/input.h" #include "core/object/script_language.h" #include "core/os/os.h" class RemoteDebugger::MultiplayerProfiler : public EngineProfiler { struct BandwidthFrame { uint32_t timestamp; int packet_size; }; int bandwidth_in_ptr = 0; Vector<BandwidthFrame> bandwidth_in; int bandwidth_out_ptr = 0; Vector<BandwidthFrame> bandwidth_out; uint64_t last_bandwidth_time = 0; int bandwidth_usage(const Vector<BandwidthFrame> &p_buffer, int p_pointer) { ERR_FAIL_COND_V(p_buffer.size() == 0, 0); int total_bandwidth = 0; uint64_t timestamp = OS::get_singleton()->get_ticks_msec(); uint64_t final_timestamp = timestamp - 1000; int i = (p_pointer + p_buffer.size() - 1) % p_buffer.size(); while (i != p_pointer && p_buffer[i].packet_size > 0) { if (p_buffer[i].timestamp < final_timestamp) { return total_bandwidth; } total_bandwidth += p_buffer[i].packet_size; i = (i + p_buffer.size() - 1) % p_buffer.size(); } ERR_FAIL_COND_V_MSG(i == p_pointer, total_bandwidth, "Reached the end of the bandwidth profiler buffer, values might be inaccurate."); return total_bandwidth; } public: void toggle(bool p_enable, const Array &p_opts) { if (!p_enable) { bandwidth_in.clear(); bandwidth_out.clear(); } else { bandwidth_in_ptr = 0; bandwidth_in.resize(16384); // ~128kB for (int i = 0; i < bandwidth_in.size(); ++i) { bandwidth_in.write[i].packet_size = -1; } bandwidth_out_ptr = 0; bandwidth_out.resize(16384); // ~128kB for (int i = 0; i < bandwidth_out.size(); ++i) { bandwidth_out.write[i].packet_size = -1; } } } void add(const Array &p_data) { ERR_FAIL_COND(p_data.size() < 3); const String inout = p_data[0]; int time = p_data[1]; int size = p_data[2]; if (inout == "in") { bandwidth_in.write[bandwidth_in_ptr].timestamp = time; bandwidth_in.write[bandwidth_in_ptr].packet_size = size; bandwidth_in_ptr = (bandwidth_in_ptr + 1) % bandwidth_in.size(); } else if (inout == "out") { bandwidth_out.write[bandwidth_out_ptr].timestamp = time; bandwidth_out.write[bandwidth_out_ptr].packet_size = size; bandwidth_out_ptr = (bandwidth_out_ptr + 1) % bandwidth_out.size(); } } void tick(double p_frame_time, double p_idle_time, double p_physics_time, double p_physics_frame_time) { uint64_t pt = OS::get_singleton()->get_ticks_msec(); if (pt - last_bandwidth_time > 200) { last_bandwidth_time = pt; int incoming_bandwidth = bandwidth_usage(bandwidth_in, bandwidth_in_ptr); int outgoing_bandwidth = bandwidth_usage(bandwidth_out, bandwidth_out_ptr); Array arr; arr.push_back(incoming_bandwidth); arr.push_back(outgoing_bandwidth); EngineDebugger::get_singleton()->send_message("multiplayer:bandwidth", arr); } } }; class RemoteDebugger::PerformanceProfiler : public EngineProfiler { Object *performance = nullptr; int last_perf_time = 0; uint64_t last_monitor_modification_time = 0; public: void toggle(bool p_enable, const Array &p_opts) {} void add(const Array &p_data) {} void tick(double p_frame_time, double p_idle_time, double p_physics_time, double p_physics_frame_time) { if (!performance) { return; } uint64_t pt = OS::get_singleton()->get_ticks_msec(); if (pt - last_perf_time < 1000) { return; } last_perf_time = pt; Array custom_monitor_names = performance->call("get_custom_monitor_names"); uint64_t monitor_modification_time = performance->call("get_monitor_modification_time"); if (monitor_modification_time > last_monitor_modification_time) { last_monitor_modification_time = monitor_modification_time; EngineDebugger::get_singleton()->send_message("performance:profile_names", custom_monitor_names); } int max = performance->get("MONITOR_MAX"); Array arr; arr.resize(max + custom_monitor_names.size()); for (int i = 0; i < max; i++) { arr[i] = performance->call("get_monitor", i); } for (int i = 0; i < custom_monitor_names.size(); i++) { Variant monitor_value = performance->call("get_custom_monitor", custom_monitor_names[i]); if (!monitor_value.is_num()) { ERR_PRINT("Value of custom monitor '" + String(custom_monitor_names[i]) + "' is not a number"); arr[i + max] = Variant(); } arr[i + max] = monitor_value; } EngineDebugger::get_singleton()->send_message("performance:profile_frame", arr); } PerformanceProfiler(Object *p_performance) { performance = p_performance; } }; Error RemoteDebugger::_put_msg(String p_message, Array p_data) { Array msg; msg.push_back(p_message); msg.push_back(p_data); Error err = peer->put_message(msg); if (err != OK) { n_messages_dropped++; } return err; } void RemoteDebugger::_err_handler(void *p_this, const char *p_func, const char *p_file, int p_line, const char *p_err, const char *p_descr, bool p_editor_notify, ErrorHandlerType p_type) { if (p_type == ERR_HANDLER_SCRIPT) { return; //ignore script errors, those go through debugger } RemoteDebugger *rd = (RemoteDebugger *)p_this; if (rd->flushing && Thread::get_caller_id() == rd->flush_thread) { // Can't handle recursive errors during flush. return; } Vector<ScriptLanguage::StackInfo> si; for (int i = 0; i < ScriptServer::get_language_count(); i++) { si = ScriptServer::get_language(i)->debug_get_current_stack_info(); if (si.size()) { break; } } // send_error will lock internally. rd->script_debugger->send_error(String::utf8(p_func), String::utf8(p_file), p_line, String::utf8(p_err), String::utf8(p_descr), p_editor_notify, p_type, si); } void RemoteDebugger::_print_handler(void *p_this, const String &p_string, bool p_error) { RemoteDebugger *rd = (RemoteDebugger *)p_this; if (rd->flushing && Thread::get_caller_id() == rd->flush_thread) { // Can't handle recursive prints during flush. return; } String s = p_string; int allowed_chars = MIN(MAX(rd->max_chars_per_second - rd->char_count, 0), s.length()); if (allowed_chars == 0 && s.length() > 0) { return; } if (allowed_chars < s.length()) { s = s.substr(0, allowed_chars); } MutexLock lock(rd->mutex); rd->char_count += allowed_chars; bool overflowed = rd->char_count >= rd->max_chars_per_second; if (rd->is_peer_connected()) { if (overflowed) { s += "[...]"; } OutputString output_string; output_string.message = s; output_string.type = p_error ? MESSAGE_TYPE_ERROR : MESSAGE_TYPE_LOG; rd->output_strings.push_back(output_string); if (overflowed) { output_string.message = "[output overflow, print less text!]"; output_string.type = MESSAGE_TYPE_ERROR; rd->output_strings.push_back(output_string); } } } RemoteDebugger::ErrorMessage RemoteDebugger::_create_overflow_error(const String &p_what, const String &p_descr) { ErrorMessage oe; oe.error = p_what; oe.error_descr = p_descr; oe.warning = false; uint64_t time = OS::get_singleton()->get_ticks_msec(); oe.hr = time / 3600000; oe.min = (time / 60000) % 60; oe.sec = (time / 1000) % 60; oe.msec = time % 1000; return oe; } void RemoteDebugger::flush_output() { flush_thread = Thread::get_caller_id(); flushing = true; MutexLock lock(mutex); if (!is_peer_connected()) { return; } if (n_messages_dropped > 0) { ErrorMessage err_msg = _create_overflow_error("TOO_MANY_MESSAGES", "Too many messages! " + String::num_int64(n_messages_dropped) + " messages were dropped. Profiling might misbheave, try raising 'network/limits/debugger/max_queued_messages' in project setting."); if (_put_msg("error", err_msg.serialize()) == OK) { n_messages_dropped = 0; } } if (output_strings.size()) { // Join output strings so we generate less messages. Vector<String> joined_log_strings; Vector<String> strings; Vector<int> types; for (int i = 0; i < output_strings.size(); i++) { const OutputString &output_string = output_strings[i]; if (output_string.type == MESSAGE_TYPE_ERROR) { if (!joined_log_strings.is_empty()) { strings.push_back(String("\n").join(joined_log_strings)); types.push_back(MESSAGE_TYPE_LOG); joined_log_strings.clear(); } strings.push_back(output_string.message); types.push_back(MESSAGE_TYPE_ERROR); } else { joined_log_strings.push_back(output_string.message); } } if (!joined_log_strings.is_empty()) { strings.push_back(String("\n").join(joined_log_strings)); types.push_back(MESSAGE_TYPE_LOG); } Array arr; arr.push_back(strings); arr.push_back(types); _put_msg("output", arr); output_strings.clear(); } while (errors.size()) { ErrorMessage oe = errors.front()->get(); _put_msg("error", oe.serialize()); errors.pop_front(); } // Update limits uint64_t ticks = OS::get_singleton()->get_ticks_usec() / 1000; if (ticks - last_reset > 1000) { last_reset = ticks; char_count = 0; err_count = 0; n_errors_dropped = 0; warn_count = 0; n_warnings_dropped = 0; } flushing = false; } void RemoteDebugger::send_message(const String &p_message, const Array &p_args) { MutexLock lock(mutex); if (is_peer_connected()) { _put_msg(p_message, p_args); } } void RemoteDebugger::send_error(const String &p_func, const String &p_file, int p_line, const String &p_err, const String &p_descr, bool p_editor_notify, ErrorHandlerType p_type) { ErrorMessage oe; oe.error = p_err; oe.error_descr = p_descr; oe.source_file = p_file; oe.source_line = p_line; oe.source_func = p_func; oe.warning = p_type == ERR_HANDLER_WARNING; uint64_t time = OS::get_singleton()->get_ticks_msec(); oe.hr = time / 3600000; oe.min = (time / 60000) % 60; oe.sec = (time / 1000) % 60; oe.msec = time % 1000; oe.callstack.append_array(script_debugger->get_error_stack_info()); if (flushing && Thread::get_caller_id() == flush_thread) { // Can't handle recursive errors during flush. return; } MutexLock lock(mutex); if (oe.warning) { warn_count++; } else { err_count++; } if (is_peer_connected()) { if (oe.warning) { if (warn_count > max_warnings_per_second) { n_warnings_dropped++; if (n_warnings_dropped == 1) { // Only print one message about dropping per second ErrorMessage overflow = _create_overflow_error("TOO_MANY_WARNINGS", "Too many warnings! Ignoring warnings for up to 1 second."); errors.push_back(overflow); } } else { errors.push_back(oe); } } else { if (err_count > max_errors_per_second) { n_errors_dropped++; if (n_errors_dropped == 1) { // Only print one message about dropping per second ErrorMessage overflow = _create_overflow_error("TOO_MANY_ERRORS", "Too many errors! Ignoring errors for up to 1 second."); errors.push_back(overflow); } } else { errors.push_back(oe); } } } } void RemoteDebugger::_send_stack_vars(List<String> &p_names, List<Variant> &p_vals, int p_type) { DebuggerMarshalls::ScriptStackVariable stvar; List<String>::Element *E = p_names.front(); List<Variant>::Element *F = p_vals.front(); while (E) { stvar.name = E->get(); stvar.value = F->get(); stvar.type = p_type; send_message("stack_frame_var", stvar.serialize()); E = E->next(); F = F->next(); } } Error RemoteDebugger::_try_capture(const String &p_msg, const Array &p_data, bool &r_captured) { const int idx = p_msg.find(":"); r_captured = false; if (idx < 0) { // No prefix, unknown message. return OK; } const String cap = p_msg.substr(0, idx); if (!has_capture(cap)) { return ERR_UNAVAILABLE; // Unknown message... } const String msg = p_msg.substr(idx + 1); return capture_parse(cap, msg, p_data, r_captured); } void RemoteDebugger::debug(bool p_can_continue, bool p_is_error_breakpoint) { //this function is called when there is a debugger break (bug on script) //or when execution is paused from editor if (script_debugger->is_skipping_breakpoints() && !p_is_error_breakpoint) { return; } ERR_FAIL_COND_MSG(!is_peer_connected(), "Script Debugger failed to connect, but being used anyway."); if (!peer->can_block()) { return; // Peer does not support blocking IO. We could at least send the error though. } ScriptLanguage *script_lang = script_debugger->get_break_language(); const String error_str = script_lang ? script_lang->debug_get_error() : ""; Array msg; msg.push_back(p_can_continue); msg.push_back(error_str); ERR_FAIL_COND(!script_lang); msg.push_back(script_lang->debug_get_stack_level_count() > 0); send_message("debug_enter", msg); Input::MouseMode mouse_mode = Input::get_singleton()->get_mouse_mode(); if (mouse_mode != Input::MOUSE_MODE_VISIBLE) { Input::get_singleton()->set_mouse_mode(Input::MOUSE_MODE_VISIBLE); } while (is_peer_connected()) { flush_output(); peer->poll(); if (peer->has_message()) { Array cmd = peer->get_message(); ERR_CONTINUE(cmd.size() != 2); ERR_CONTINUE(cmd[0].get_type() != Variant::STRING); ERR_CONTINUE(cmd[1].get_type() != Variant::ARRAY); String command = cmd[0]; Array data = cmd[1]; if (command == "step") { script_debugger->set_depth(-1); script_debugger->set_lines_left(1); break; } else if (command == "next") { script_debugger->set_depth(0); script_debugger->set_lines_left(1); break; } else if (command == "continue") { script_debugger->set_depth(-1); script_debugger->set_lines_left(-1); break; } else if (command == "break") { ERR_PRINT("Got break when already broke!"); break; } else if (command == "get_stack_dump") { DebuggerMarshalls::ScriptStackDump dump; int slc = script_lang->debug_get_stack_level_count(); for (int i = 0; i < slc; i++) { ScriptLanguage::StackInfo frame; frame.file = script_lang->debug_get_stack_level_source(i); frame.line = script_lang->debug_get_stack_level_line(i); frame.func = script_lang->debug_get_stack_level_function(i); dump.frames.push_back(frame); } send_message("stack_dump", dump.serialize()); } else if (command == "get_stack_frame_vars") { ERR_FAIL_COND(data.size() != 1); ERR_FAIL_COND(!script_lang); int lv = data[0]; List<String> members; List<Variant> member_vals; if (ScriptInstance *inst = script_lang->debug_get_stack_level_instance(lv)) { members.push_back("self"); member_vals.push_back(inst->get_owner()); } script_lang->debug_get_stack_level_members(lv, &members, &member_vals); ERR_FAIL_COND(members.size() != member_vals.size()); List<String> locals; List<Variant> local_vals; script_lang->debug_get_stack_level_locals(lv, &locals, &local_vals); ERR_FAIL_COND(locals.size() != local_vals.size()); List<String> globals; List<Variant> globals_vals; script_lang->debug_get_globals(&globals, &globals_vals); ERR_FAIL_COND(globals.size() != globals_vals.size()); Array var_size; var_size.push_back(local_vals.size() + member_vals.size() + globals_vals.size()); send_message("stack_frame_vars", var_size); _send_stack_vars(locals, local_vals, 0); _send_stack_vars(members, member_vals, 1); _send_stack_vars(globals, globals_vals, 2); } else if (command == "reload_scripts") { reload_all_scripts = true; } else if (command == "breakpoint") { ERR_FAIL_COND(data.size() < 3); bool set = data[2]; if (set) { script_debugger->insert_breakpoint(data[1], data[0]); } else { script_debugger->remove_breakpoint(data[1], data[0]); } } else if (command == "set_skip_breakpoints") { ERR_FAIL_COND(data.size() < 1); script_debugger->set_skip_breakpoints(data[0]); } else { bool captured = false; ERR_CONTINUE(_try_capture(command, data, captured) != OK); if (!captured) { WARN_PRINT("Unknown message received from debugger: " + command); } } } else { OS::get_singleton()->delay_usec(10000); OS::get_singleton()->process_and_drop_events(); } } send_message("debug_exit", Array()); if (mouse_mode != Input::MOUSE_MODE_VISIBLE) { Input::get_singleton()->set_mouse_mode(mouse_mode); } } void RemoteDebugger::poll_events(bool p_is_idle) { if (peer.is_null()) { return; } flush_output(); peer->poll(); while (peer->has_message()) { Array arr = peer->get_message(); ERR_CONTINUE(arr.size() != 2); ERR_CONTINUE(arr[0].get_type() != Variant::STRING); ERR_CONTINUE(arr[1].get_type() != Variant::ARRAY); const String cmd = arr[0]; const int idx = cmd.find(":"); bool parsed = false; if (idx < 0) { // Not prefix, use scripts capture. capture_parse("core", cmd, arr[1], parsed); continue; } const String cap = cmd.substr(0, idx); if (!has_capture(cap)) { continue; // Unknown message... } const String msg = cmd.substr(idx + 1); capture_parse(cap, msg, arr[1], parsed); } // Reload scripts during idle poll only. if (p_is_idle && reload_all_scripts) { for (int i = 0; i < ScriptServer::get_language_count(); i++) { ScriptServer::get_language(i)->reload_all_scripts(); } reload_all_scripts = false; } } Error RemoteDebugger::_core_capture(const String &p_cmd, const Array &p_data, bool &r_captured) { r_captured = true; if (p_cmd == "reload_scripts") { reload_all_scripts = true; } else if (p_cmd == "breakpoint") { ERR_FAIL_COND_V(p_data.size() < 3, ERR_INVALID_DATA); bool set = p_data[2]; if (set) { script_debugger->insert_breakpoint(p_data[1], p_data[0]); } else { script_debugger->remove_breakpoint(p_data[1], p_data[0]); } } else if (p_cmd == "set_skip_breakpoints") { ERR_FAIL_COND_V(p_data.size() < 1, ERR_INVALID_DATA); script_debugger->set_skip_breakpoints(p_data[0]); } else if (p_cmd == "break") { script_debugger->debug(script_debugger->get_break_language()); } else { r_captured = false; } return OK; } Error RemoteDebugger::_profiler_capture(const String &p_cmd, const Array &p_data, bool &r_captured) { r_captured = false; ERR_FAIL_COND_V(p_data.size() < 1, ERR_INVALID_DATA); ERR_FAIL_COND_V(p_data[0].get_type() != Variant::BOOL, ERR_INVALID_DATA); ERR_FAIL_COND_V(!has_profiler(p_cmd), ERR_UNAVAILABLE); Array opts; if (p_data.size() > 1) { // Optional profiler parameters. ERR_FAIL_COND_V(p_data[1].get_type() != Variant::ARRAY, ERR_INVALID_DATA); opts = p_data[1]; } r_captured = true; profiler_enable(p_cmd, p_data[0], opts); return OK; } RemoteDebugger::RemoteDebugger(Ref<RemoteDebuggerPeer> p_peer) { peer = p_peer; max_chars_per_second = GLOBAL_GET("network/limits/debugger/max_chars_per_second"); max_errors_per_second = GLOBAL_GET("network/limits/debugger/max_errors_per_second"); max_warnings_per_second = GLOBAL_GET("network/limits/debugger/max_warnings_per_second"); // Multiplayer Profiler multiplayer_profiler.instantiate(); multiplayer_profiler->bind("multiplayer"); // Performance Profiler Object *perf = Engine::get_singleton()->get_singleton_object("Performance"); if (perf) { performance_profiler = Ref<PerformanceProfiler>(memnew(PerformanceProfiler(perf))); performance_profiler->bind("performance"); profiler_enable("performance", true); } // Core and profiler captures. Capture core_cap(this, [](void *p_user, const String &p_cmd, const Array &p_data, bool &r_captured) { return ((RemoteDebugger *)p_user)->_core_capture(p_cmd, p_data, r_captured); }); register_message_capture("core", core_cap); Capture profiler_cap(this, [](void *p_user, const String &p_cmd, const Array &p_data, bool &r_captured) { return ((RemoteDebugger *)p_user)->_profiler_capture(p_cmd, p_data, r_captured); }); register_message_capture("profiler", profiler_cap); // Error handlers phl.printfunc = _print_handler; phl.userdata = this; add_print_handler(&phl); eh.errfunc = _err_handler; eh.userdata = this; add_error_handler(&eh); } RemoteDebugger::~RemoteDebugger() { remove_print_handler(&phl); remove_error_handler(&eh); }