Optimize RSX Debugger

rpcs3/Emu/RSX/RSXDisAsm.cpp

@@ -109,6 +109,8 @@ u32 RSXDisAsm::disasm(u32 pc)
 
 		pc += 4;
 
+		std::string str;
+
 		for (u32 i = 0; i < count; i++, pc += 4)
 		{
 			if (!try_read_op(pc))
@@ -137,7 +139,9 @@ u32 RSXDisAsm::disasm(u32 pc)
 				continue;
 			}
 
-			std::string str = rsx::get_pretty_printing_function(id)(id, m_op);
+			str.clear();
+			rsx::get_pretty_printing_function(id)(str, id, m_op);
+
 			Write(str, m_mode == cpu_disasm_mode::list ? i : count, non_inc, id);
 		}
 

rpcs3/Emu/RSX/RSXThread.cpp

@@ -3198,7 +3198,9 @@ namespace rsx
 			}
 			}
 
-			fmt::append(result, "[%04x] %s\n", i, ensure(rsx::get_pretty_printing_function(i))(i, method_registers.registers[i]));
+			fmt::append(result, "[%04x] ", i);
+			ensure(rsx::get_pretty_printing_function(i))(result, i, method_registers.registers[i]);
+			result += '\n';
 		}
 	}
 

rpcs3/Emu/RSX/gcm_enums.cpp

@@ -612,8 +612,21 @@ void fmt_class_string<texture_max_anisotropy>::format(std::string& out, u64 arg)
 
 namespace rsx
 {
-	std::string print_boolean(bool b)
+	enum class boolean_to_string_t : u8;
-	{
+}
-		return b ? "enabled" : "disabled";
+
+template <>
+void fmt_class_string<boolean_to_string_t>::format(std::string& out, u64 arg)
+{
+	format_enum(out, arg, [](boolean_to_string_t value)
+	{
+		switch (value)
+		{
+		case boolean_to_string_t{+true}: return "true";
+		case boolean_to_string_t{+false}: return "false";
+		default: break; // TODO: This is technically unreachable but need needs to be reachable when value is not 1 or 0
+		}
+
+		return unknown;
+	});
 }
-} // end namespace rsx

rpcs3/Emu/RSX/gcm_printing.cpp

@@ -902,18 +902,20 @@ namespace
 	#undef KEY_STR
 }
 
-std::string rsx::get_method_name(const u32 id)
+std::pair<std::string_view, std::string_view> rsx::get_method_name(u32 id, std::string& string_name)
 {
 	const auto found = methods_name.find(id);
 
 	if (found != methods_name.end())
 	{
-		std::string prefix("CELL_GCM_"sv);
+		constexpr std::string_view prefix = "CELL_GCM_";
-		prefix.append(found->second.data(), found->second.size());
+
-		return prefix;
+		return {prefix, found->second};
 	}
 
-	return fmt::format("Unnamed method 0x%04x", id);
+	string_name.clear();
+	fmt::append(string_name, "Unnamed method 0x%04x", id);
+	return {};
 }
 
 // Various parameter pretty printing function
@@ -984,15 +986,15 @@ namespace
 	namespace
 	{
 		template <u32 Opcode>
-		std::string register_pretty_function(u32 /*id*/, u32 arg)
+		void register_pretty_function(std::string& out, u32 /*id*/, u32 arg)
 		{
-			return rsx::registers_decoder<Opcode>::dump(arg);
+			rsx::registers_decoder<Opcode>::dump(out, arg);
 		}
 
 		template <typename T, T... Index>
-		std::array<std::string(*)(u32, u32), 1 << 14> create_printing_table(std::integer_sequence<T, Index...>)
+		std::array<void(*)(std::string&, u32, u32), 1 << 14> create_printing_table(std::integer_sequence<T, Index...>)
 		{
-			std::array<std::string(*)(u32, u32), 1 << 14> result{};
+			std::array<void(*)(std::string&, u32, u32), 1 << 14> result{};
 
 			((result[opcode_list[Index * 5 + 0]] = &register_pretty_function<opcode_list[Index * 5 + 0]>,
 			result[opcode_list[Index * 5 + 1]] = &register_pretty_function<opcode_list[Index * 5 + 1]>,
@@ -1022,7 +1024,7 @@ namespace
 	 };*/
 }
 
-std::add_pointer_t<std::string(u32, u32)> rsx::get_pretty_printing_function(u32 id)
+std::add_pointer_t<void(std::string&, u32, u32)> rsx::get_pretty_printing_function(u32 id)
 {
 	const auto found = id < printing_functions.size() ? printing_functions[id] : nullptr;
 
@@ -1031,11 +1033,17 @@ std::add_pointer_t<std::string(u32, u32)> rsx::get_pretty_printing_function(u32
 		return found;
 	}
 
-	return [](u32 id, u32 v)
+	return [](std::string& result, u32 id, u32 v)
 	{
-		const std::string name = rsx::get_method_name(id);
+		std::string string_name;
-		const std::string_view view = name, prefix = "CELL_GCM_"sv;
+		const auto [name_prefix, name] = rsx::get_method_name(id, string_name);
 
-		return fmt::format("%s: 0x%08x", name.starts_with("CELL_GCM_"sv) ? view.substr(prefix.size()) : view, v);
+		if (!string_name.empty())
+		{
+			fmt::append(result, "%s: 0x%08x", string_name, v);
+			return;
+		}
+
+		fmt::append(result, "%s: 0x%08x", name, v);
 	};
 }

rpcs3/Emu/RSX/gcm_printing.h

@@ -6,7 +6,7 @@
 
 namespace rsx
 {
-	std::string get_method_name(u32 id);
+	std::pair<std::string_view, std::string_view> get_method_name(u32 id, std::string& result_str);
 
-	std::add_pointer_t<std::string(u32, u32)> get_pretty_printing_function(u32 id);
+	std::add_pointer_t<void(std::string&, u32, u32)> get_pretty_printing_function(u32 id);
 }

rpcs3/rpcs3qt/rsx_debugger.cpp

@@ -629,18 +629,21 @@ void rsx_debugger::GetMemory() const
 	std::string dump;
 	u32 cmd_i = 0;
 
+	std::string str;
+
 	for (const auto& command : frame_debug.command_queue)
 	{
-		const std::string str = rsx::get_pretty_printing_function(command.first)(command.first, command.second);
+		str.clear();
+		rsx::get_pretty_printing_function(command.first)(str, command.first, command.second);
 		m_list_captured_frame->setItem(cmd_i++, 0, new QTableWidgetItem(qstr(str)));
 
 		dump += str;
 		dump += '\n';
 	}
 
-	if (fs::file file = fs::file(fs::get_cache_dir() + "command_dump.log", fs::rewrite))
+	if (!dump.empty())
 	{
-		file.write(dump);
+		fs::write_file(fs::get_cache_dir() + "command_dump.log", fs::rewrite, dump);
 	}
 
 	for (u32 i = 0; i < frame_debug.draw_calls.size(); i++)