Merge branch 'aristocratos:main' into battery-power-2

CHANGELOG.md

@@ -1,6 +1,8 @@
 ## v1.3.0
 
-* Added Gpu Support | @romner-set | PR #529
+* Added Gpu Support Linux | @romner-set | PR #529
+
+* Added platform support for OpenBSD | @joske | PR #607
 
 * Enable macos clang | @muneebmahmed | PR #666
 
@@ -42,6 +44,16 @@
 
 * Create adwaita.theme | @flipflop133 | #485
 
+* Try get terminal size of "/dev/tty" if stdout fails | @imwints | PR #627
+
+* Refresh rate program argument | @imwints | PR #640
+
+* Improved error handling when determining the config directory | @imwints | #652
+
+* Use native POSIX polling syscalls to read input | @lvxnull | #624
+
+* Conditional compile on Big Sur and up | @joske | PR #690
+
 + Various fixes by @imwints, @simplepad, @joske, @gwena, @cpalv, @iambeingtracked, @mattico, @NexAdn
 
 ## v1.2.13

CMakeLists.txt

@@ -11,7 +11,7 @@ if("${CMAKE_CURRENT_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_BINARY_DIR}")
 endif()
 
 project("btop"
-  VERSION 1.2.13
+  VERSION 1.3.0
   DESCRIPTION "A monitor of resources"
   HOMEPAGE_URL "https://github.com/aristocratos/btop"
   LANGUAGES CXX
@@ -41,6 +41,7 @@ option(BTOP_LTO "Enable LTO" ON)
 option(BTOP_USE_MOLD "Use mold to link btop" OFF)
 option(BTOP_PEDANTIC "Enable a bunch of additional warnings" OFF)
 option(BTOP_WERROR "Compile with warnings as errors" OFF)
+option(BTOP_FORTIFY "Detect buffer overflows with _FORTIFY_SOURCE=3" ON)
 option(BTOP_GPU "Enable GPU support" ON)
 cmake_dependent_option(BTOP_RSMI_STATIC "Link statically to ROCm SMI" OFF "BTOP_GPU" OFF)
 
@@ -97,7 +98,7 @@ if(BTOP_WERROR)
 endif()
 
 if(NOT APPLE)
- target_compile_options(btop PRIVATE -fstack-clash-protection)
+  target_compile_options(btop PRIVATE -fstack-clash-protection)
 endif()
 check_cxx_compiler_flag(-fstack-protector HAS_FSTACK_PROTECTOR)
 if(HAS_FSTACK_PROTECTOR)
@@ -112,7 +113,7 @@ target_compile_definitions(btop PRIVATE
   _FILE_OFFSET_BITS=64
   $<$<CONFIG:Debug>:_GLIBCXX_ASSERTIONS _LIBCPP_ENABLE_ASSERTIONS=1>
   # Only has an effect with optimizations enabled
-  $<$<NOT:$<CONFIG:Debug>>:_FORTIFY_SOURCE=2>
+  $<$<AND:$<NOT:$<CONFIG:Debug>>,$<BOOL:${BTOP_FORTIFY}>>:_FORTIFY_SOURCE=3>
 )
 
 target_include_directories(btop SYSTEM PRIVATE include)

Makefile

@@ -50,6 +50,11 @@ ifeq ($(GPU_SUPPORT),true)
 	override ADDFLAGS += -DGPU_SUPPORT
 endif
 
+FORTIFY_SOURCE ?= true
+ifeq ($(FORTIFY_SOURCE),true)
+	override ADDFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3
+endif
+
 #? Compiler and Linker
 ifeq ($(shell $(CXX) --version | grep clang >/dev/null 2>&1; echo $$?),0)
 	override CXX_IS_CLANG := true
@@ -174,7 +179,7 @@ override GOODFLAGS := $(foreach flag,$(TESTFLAGS),$(strip $(shell echo "int main
 override REQFLAGS   := -std=c++20
 WARNFLAGS			:= -Wall -Wextra -pedantic
 OPTFLAGS			:= -O2 -ftree-vectorize -flto=$(LTO)
-LDCXXFLAGS			:= -pthread -D_FORTIFY_SOURCE=2 -D_GLIBCXX_ASSERTIONS -D_FILE_OFFSET_BITS=64 $(GOODFLAGS) $(ADDFLAGS)
+LDCXXFLAGS			:= -pthread -D_GLIBCXX_ASSERTIONS -D_FILE_OFFSET_BITS=64 $(GOODFLAGS) $(ADDFLAGS)
 override CXXFLAGS	+= $(REQFLAGS) $(LDCXXFLAGS) $(OPTFLAGS) $(WARNFLAGS)
 override LDFLAGS	+= $(LDCXXFLAGS) $(OPTFLAGS) $(WARNFLAGS)
 INC					:= $(foreach incdir,$(INCDIRS),-isystem $(incdir)) -I$(SRCDIR)

README.md

@@ -43,6 +43,15 @@
 
 ## News
 
+##### 7 January 2024
+
+Btop release v1.3.0
+
+Big release with GPU support added for Linux and platform support for OpenBSD. Big thanks to [@romner-set](https://github.com/romner-set) (GPU support) and [@joske](https://github.com/joske) (OpenBSD support) for contributions.
+And a multitude of bugfixes and small changes, see [CHANGELOG.md](CHANGELOG.md) and latest [release](https://github.com/aristocratos/btop/releases/latest) for detailed list and attributions.
+
+See news entry below for more information regarding GPU support.
+
 ##### 25 November 2023
 
 GPU monitoring added for Linux!
@@ -69,6 +78,9 @@ Big update with version bump to 1.3 coming soon.
 
 First release of btop4win available at https://github.com/aristocratos/btop4win
 
+<details>
+<summary>More...</summary>
+
 ##### 16 January 2022
 
 Release v1.2.0 with FreeBSD support. No release binaries for FreeBSD provided as of yet.
@@ -84,9 +96,6 @@ macOS binaries + installer are included for both x86 and ARM64 (Apple Silicon) i
 
 Big thank you to [@joske](https://github.com/joske) who wrote the vast majority of the implementation!
 
-<details>
-<summary>More...</summary>
-
 ##### 30 October 2021
 
 Work on the OSX [macOS] and FreeBSD branches, both initiated and mostly worked on by [@joske](https://github.com/joske), will likely be completed in the coming weeks.
@@ -213,6 +222,22 @@ Also needs a UTF8 locale and a font that covers:
 * Unicode Block “Geometric Shapes” U+25A0 - U+25FF
 * Unicode Block "Box Drawing" and "Block Elements" U+2500 - U+259F
 
+### **Optional Dependencies (Needed for GPU monitoring)**
+
+GPU monitoring also requires a btop binary built with GPU support (`GPU_SUPPORT=true` flag).
+
+See [GPU compatibility](#gpu-compatibility) section for more about compiling with GPU support.
+
+ * **NVIDIA**
+
+If you have an NVIDIA GPU you must use an official NVIDIA driver, both the closed-source and open-source ones have been verified to work.
+
+In addition to that you must also have the nvidia-ml dynamic library installed, which should be included with the driver package of your distribution.
+
+ * **AMD**
+
+If you have an AMD GPU `rocm_smi_lib` is required, which may or may not be packaged for your distribution.
+
 ### **Notice (Text rendering issues)**
 
 * If you are having problems with the characters in the graphs not looking like they do in the screenshots, it's likely a problem with your systems configured fallback font not having support for braille characters.
@@ -396,6 +421,7 @@ Also needs a UTF8 locale and a font that covers:
    | `STRIP=true`                    | To force stripping of debug symbols (adds `-s` linker flag)             |
    | `DEBUG=true`                    | Sets OPTFLAGS to `-O0 -g` and enables more verbose debug logging        |
    | `ARCH=<architecture>`           | To manually set the target architecture                                 |
+   | `FORTIFY_SOURCE=false`          | Disable fortification with `_FORTIFY_SOURCE=3`                          |
    | `GPU_SUPPORT=<true\|false>`     | Enable/disable GPU support (Enabled by default on X86_64 Linux)         |
    | `RSMI_STATIC=true`              | To statically link the ROCm SMI library used for querying AMDGPU        |
    | `ADDFLAGS=<flags>`              | For appending flags to both compiler and linker                         |
@@ -494,6 +520,7 @@ Also needs a UTF8 locale and a font that covers:
    | `-DBTOP_USE_MOLD=<ON\|OFF>`     | Use mold to link btop (OFF by default)                                  |
    | `-DBTOP_PEDANTIC=<ON\|OFF>`     | Compile with additional warnings (OFF by default)                       |
    | `-DBTOP_WERROR=<ON\|OFF>`       | Compile with warnings as errors (OFF by default)                        |
+   | `-DBTOP_FORTIFY=<ON\|OFF>`      | Detect buffer overflows with `_FORTIFY_SOURCE=3` (ON by default)        |
    | `-DBTOP_GPU=<ON\|OFF>`          | Enable GPU support (ON by default)                                      |
    | `-DBTOP_RSMI_STATIC=<ON\|OFF>`  | Build and link the ROCm SMI library statically (OFF by default)         |
    | `-DCMAKE_INSTALL_PREFIX=<path>` | The installation prefix ('/usr/local' by default)                       |
@@ -567,6 +594,7 @@ Also needs a UTF8 locale and a font that covers:
    | `STRIP=true`                    | To force stripping of debug symbols (adds `-s` linker flag)             |
    | `DEBUG=true`                    | Sets OPTFLAGS to `-O0 -g` and enables more verbose debug logging        |
    | `ARCH=<architecture>`           | To manually set the target architecture                                 |
+   | `FORTIFY_SOURCE=false`          | Disable fortification with `_FORTIFY_SOURCE=3`                          |
    | `ADDFLAGS=<flags>`              | For appending flags to both compiler and linker                         |
    | `CXX=<compiler>`                | Manualy set which compiler to use                                       |
 
@@ -665,6 +693,7 @@ Also needs a UTF8 locale and a font that covers:
    | `-DBTOP_USE_MOLD=<ON\|OFF>`     | Use mold to link btop (OFF by default)                                  |
    | `-DBTOP_PEDANTIC=<ON\|OFF>`     | Compile with additional warnings (OFF by default)                       |
    | `-DBTOP_WERROR=<ON\|OFF>`       | Compile with warnings as errors (OFF by default)                        |
+   | `-DBTOP_FORTIFY=<ON\|OFF>`      | Detect buffer overflows with `_FORTIFY_SOURCE=3` (ON by default)        |
    | `-DCMAKE_INSTALL_PREFIX=<path>` | The installation prefix ('/usr/local' by default)                       |
 
    To force any specific compiler, run `CXX=<compiler> cmake -B build -G Ninja`
@@ -733,6 +762,7 @@ Also needs a UTF8 locale and a font that covers:
    | `STRIP=true`                    | To force stripping of debug symbols (adds `-s` linker flag)             |
    | `DEBUG=true`                    | Sets OPTFLAGS to `-O0 -g` and enables more verbose debug logging        |
    | `ARCH=<architecture>`           | To manually set the target architecture                                 |
+   | `FORTIFY_SOURCE=false`          | Disable fortification with `_FORTIFY_SOURCE=3`                          |
    | `ADDFLAGS=<flags>`              | For appending flags to both compiler and linker                         |
    | `CXX=<compiler>`                | Manualy set which compiler to use                                       |
 
@@ -842,6 +872,7 @@ Also needs a UTF8 locale and a font that covers:
    | `-DBTOP_USE_MOLD=<ON\|OFF>`     | Use mold to link btop (OFF by default)                                  |
    | `-DBTOP_PEDANTIC=<ON\|OFF>`     | Compile with additional warnings (OFF by default)                       |
    | `-DBTOP_WERROR=<ON\|OFF>`       | Compile with warnings as errors (OFF by default)                        |
+   | `-DBTOP_FORTIFY=<ON\|OFF>`      | Detect buffer overflows with `_FORTIFY_SOURCE=3` (ON by default)        |
    | `-DCMAKE_INSTALL_PREFIX=<path>` | The installation prefix ('/usr/local' by default)                       |
 
    _**Note:** Static linking does not work with GCC._
@@ -912,6 +943,7 @@ Also needs a UTF8 locale and a font that covers:
    | `STRIP=true`                    | To force stripping of debug symbols (adds `-s` linker flag)             |
    | `DEBUG=true`                    | Sets OPTFLAGS to `-O0 -g` and enables more verbose debug logging        |
    | `ARCH=<architecture>`           | To manually set the target architecture                                 |
+   | `FORTIFY_SOURCE=false`          | Disable fortification with `_FORTIFY_SOURCE=3`                          |
    | `ADDFLAGS=<flags>`              | For appending flags to both compiler and linker                         |
    | `CXX=<compiler>`                | Manualy set which compiler to use                                       |
 

src/btop.cpp

@@ -96,9 +96,9 @@ namespace Global {
 	string exit_error_msg;
 	atomic<bool> thread_exception (false);
 
-	bool debuginit{};   // defaults to false
+	bool debuginit{};
-	bool debug{};       // defaults to false
+	bool debug{};
-	bool utf_force{};   // defaults to false
+	bool utf_force{};
 
 	uint64_t start_time;
 
@@ -107,9 +107,10 @@ namespace Global {
 	atomic<bool> should_quit (false);
 	atomic<bool> should_sleep (false);
 	atomic<bool> _runner_started (false);
+	atomic<bool> init_conf (false);
 
-	bool arg_tty{};         // defaults to false
+	bool arg_tty{};
-	bool arg_low_color{};   // defaults to false
+	bool arg_low_color{};
 	int arg_preset = -1;
 	int arg_update = 0;
 }
@@ -418,7 +419,7 @@ namespace Runner {
 
 	string output;
 	string empty_bg;
-	bool pause_output{}; // defaults to false
+	bool pause_output{};
 	sigset_t mask;
 	pthread_t runner_id;
 	pthread_mutex_t mtx;
@@ -894,10 +895,10 @@ int main(int argc, char **argv) {
 	}
 
 	//? Config init
-	{	vector<string> load_warnings;
+	{
+		atomic_lock lck(Global::init_conf);
+		vector<string> load_warnings;
 		Config::load(Config::conf_file, load_warnings);
-
-		if (Config::current_boxes.empty()) Config::check_boxes(Config::getS("shown_boxes"));
 		Config::set("lowcolor", (Global::arg_low_color ? true : not Config::getB("truecolor")));
 
 		if (Global::debug) {
@@ -918,7 +919,7 @@ int main(int argc, char **argv) {
 	}
 	else {
 		string found;
-		bool set_failure{}; // defaults to false
+		bool set_failure{};
 		for (const auto loc_env : array{"LANG", "LC_ALL"}) {
 			if (std::getenv(loc_env) != nullptr and str_to_upper(s_replace((string)std::getenv(loc_env), "-", "")).ends_with("UTF8")) {
 				found = std::getenv(loc_env);
@@ -1018,6 +1019,11 @@ int main(int argc, char **argv) {
 		clean_quit(1);
 	}
 
+	if (not Config::check_boxes(Config::getS("shown_boxes"))) {
+		Config::check_boxes("cpu mem net proc");
+		Config::set("shown_boxes", "cpu mem net proc"s);
+	}
+
 	//? Update list of available themes and generate the selected theme
 	Theme::updateThemes();
 	Theme::setTheme();

src/btop_config.cpp

@@ -510,7 +510,7 @@ namespace Config {
 		else if (name.starts_with("graph_symbol_") and (value != "default" and not v_contains(valid_graph_symbols, value)))
 			validError = fmt::format("Invalid graph symbol identifier for {}: {}", name, value);
 
-		else if (name == "shown_boxes" and not value.empty() and not check_boxes(value))
+		else if (name == "shown_boxes" and not Global::init_conf and not value.empty() and not check_boxes(value))
 			validError = "Invalid box name(s) in shown_boxes!";
 
 	#ifdef GPU_SUPPORT
@@ -622,8 +622,7 @@ namespace Config {
 			if (not v_contains(valid_boxes, box)) return false;
 		#ifdef GPU_SUPPORT
 			if (box.starts_with("gpu")) {
-				size_t gpu_num = stoi(box.substr(3));
+				size_t gpu_num = stoi(box.substr(3)) + 1;
-				if (gpu_num == 0) gpu_num = 5;
 				if (std::cmp_greater(gpu_num, Gpu::gpu_names.size())) return false;
 			}
 		#endif

src/btop_draw.cpp

@@ -307,8 +307,8 @@ namespace Draw {
 			{"/uptime", ""}
 		};
 
-		static time_t c_time{};     // defaults to 0
+		static time_t c_time{};
-		static size_t clock_len{};  // defaults to 0
+		static size_t clock_len{};
 		static string clock_str;
 
 		if (auto n_time = time(nullptr); not force and n_time == c_time)
@@ -2013,7 +2013,7 @@ namespace Draw {
 		#ifdef GPU_SUPPORT
 			const bool show_gpu_on = Config::getS("show_gpu_info") == "On";
 			const bool gpus_shown_in_cpu_panel = Gpu::gpu_names.size() > 0 and (
-				show_gpu_on or (Config::getS("cpu_graph_lower") == "Auto" and Gpu::shown == 0)
+				show_gpu_on or (Config::getS("show_gpu_info") == "Auto" and Gpu::shown == 0)
 			);
 			const int gpus_height_offset = (Gpu::gpu_names.size() - Gpu::shown)*gpus_shown_in_cpu_panel;
 			int gpus_extra_height = gpus_shown_in_cpu_panel ? Gpu::gpu_names.size() - (show_gpu_on ? 0 : Gpu::shown) : 0;

src/btop_draw.hpp

@@ -65,8 +65,8 @@ namespace Draw {
 
 	//* An editable text field
 	class TextEdit {
-		size_t pos{};   // defaults to 0
+		size_t pos{};
-		size_t upos{};  // defaults to 0
+		size_t upos{};
 		bool numeric;
 	public:
 		string text;

src/btop_menu.cpp

@@ -49,8 +49,8 @@ namespace Menu {
    bool redraw{true};
    int currentMenu = -1;
    msgBox messageBox;
-   int signalToSend{};  // defaults to 0
+   int signalToSend{};
-   int signalKillRet{}; // defaults to 0
+   int signalKillRet{};
 
    const array<string, 32> P_Signals = {
 	   "0",
@@ -873,8 +873,8 @@ namespace Menu {
 
 	int signalChoose(const string& key) {
 		auto s_pid = (Config::getB("show_detailed") and Config::getI("selected_pid") == 0 ? Config::getI("detailed_pid") : Config::getI("selected_pid"));
-		static int x{}; // defaults to 0
+		static int x{};
-		static int y{}; // defaults to 0
+		static int y{};
 		static int selected_signal = -1;
 
 		if (bg.empty()) selected_signal = -1;
@@ -1075,8 +1075,8 @@ namespace Menu {
 
 	int mainMenu(const string& key) {
 		enum MenuItems { Options, Help, Quit };
-		static int y{};         // defaults to 0
+		static int y{};
-		static int selected{};  // defaults to 0
+		static int selected{};
 		static vector<string> colors_selected;
 		static vector<string> colors_normal;
 		auto tty_mode = Config::getB("tty_mode");
@@ -1154,18 +1154,18 @@ namespace Menu {
 
 	int optionsMenu(const string& key) {
 		enum Predispositions { isBool, isInt, isString, is2D, isBrowseable, isEditable};
-		static int y{};                 // defaults to 0
+		static int y{};
-		static int x{};                 // defaults to 0
+		static int x{};
-		static int height{};            // defaults to 0
+		static int height{};
-		static int page{};              // defaults to 0
+		static int page{};
-		static int pages{};             // defaults to 0
+		static int pages{};
-		static int selected{};          // defaults to 0
+		static int selected{};
-		static int select_max{};        // defaults to 0
+		static int select_max{};
-		static int item_height{};       // defaults to 0
+		static int item_height{};
-		static int selected_cat{};      // defaults to 0
+		static int selected_cat{};
-		static int max_items{};         // defaults to 0
+		static int max_items{};
-		static int last_sel{};          // defaults to 0
+		static int last_sel{};
-		static bool editing{};          // defaults to false
+		static bool editing{};
 		static Draw::TextEdit editor;
 		static string warnings;
 		static bitset<8> selPred;
@@ -1201,9 +1201,9 @@ namespace Menu {
 			Theme::updateThemes();
 		}
 		int retval = Changed;
-		bool recollect{};       // defaults to false
+		bool recollect{};
-		bool screen_redraw{};   // defaults to false
+		bool screen_redraw{};
-		bool theme_refresh{};   // defaults to false
+		bool theme_refresh{};
 
 		//? Draw background if needed else process input
 		if (redraw) {
@@ -1505,11 +1505,11 @@ namespace Menu {
 	}
 
 	int helpMenu(const string& key) {
-		static int y{};         // defaults to 0
+		static int y{};
-		static int x{};         // defaults to 0
+		static int x{};
-		static int height{};    // defaults to 0
+		static int height{};
-		static int page{};      // defaults to 0
+		static int page{};
-		static int pages{};     // defaults to 0
+		static int pages{};
 
 		if (bg.empty()) page = 0;
 		int retval = Changed;

src/btop_menu.hpp

@@ -46,12 +46,12 @@ namespace Menu {
 	//? Strings in content vector is not checked for box width overflow
 	class msgBox {
 		string box_contents, button_left, button_right;
-		int height{};       // defaults to 0
+		int height{};
-		int width{};        // defaults to 0
+		int width{};
-		int boxtype{};      // defaults to 0
+		int boxtype{};
-		int selected{};     // defaults to 0
+		int selected{};
-		int x{};            // defaults to 0
+		int x{};
-		int y{};            // defaults to 0
+		int y{};
 	public:
 		enum BoxTypes { OK, YES_NO, NO_YES };
 		enum msgReturn {

src/btop_shared.hpp

@@ -54,6 +54,7 @@ namespace Global {
 	extern string overlay;
 	extern string clock;
 	extern uid_t real_uid, set_uid;
+	extern atomic<bool> init_conf;
 }
 
 namespace Runner {
@@ -228,11 +229,11 @@ namespace Mem {
 		string name;
 		string fstype{};                // defaults to ""
 		std::filesystem::path stat{};   // defaults to ""
-		int64_t total{};                // defaults to 0
+		int64_t total{};
-		int64_t used{};                 // defaults to 0
+		int64_t used{};
-		int64_t free{};                 // defaults to 0
+		int64_t free{};
-		int used_percent{};             // defaults to 0
+		int used_percent{};
-		int free_percent{};             // defaults to 0
+		int free_percent{};
 
 		array<int64_t, 3> old_io = {0, 0, 0};
 		deque<long long> io_read = {};
@@ -272,12 +273,12 @@ namespace Net {
 	extern std::unordered_map<string, uint64_t> graph_max;
 
 	struct net_stat {
-		uint64_t speed{};       // defaults to 0
+		uint64_t speed{};
-		uint64_t top{};         // defaults to 0
+		uint64_t top{};
-		uint64_t total{};       // defaults to 0
+		uint64_t total{};
-		uint64_t last{};        // defaults to 0
+		uint64_t last{};
-		uint64_t offset{};      // defaults to 0
+		uint64_t offset{};
-		uint64_t rollover{};    // defaults to 0
+		uint64_t rollover{};
 	};
 
 	struct net_info {
@@ -285,7 +286,7 @@ namespace Net {
 		std::unordered_map<string, net_stat> stat = { {"download", {}}, {"upload", {}} };
 		string ipv4{};      // defaults to ""
 		string ipv6{};      // defaults to ""
-		bool connected{};   // defaults to false
+		bool connected{};
 	};
 
 	extern std::unordered_map<string, net_info> current_net;
@@ -337,32 +338,32 @@ namespace Proc {
 
 	//* Container for process information
 	struct proc_info {
-		size_t pid{};           // defaults to 0
+		size_t pid{};
 		string name{};          // defaults to ""
 		string cmd{};           // defaults to ""
 		string short_cmd{};     // defaults to ""
-		size_t threads{};       // defaults to 0
+		size_t threads{};
-		int name_offset{};      // defaults to 0
+		int name_offset{};
 		string user{};          // defaults to ""
-		uint64_t mem{};         // defaults to 0
+		uint64_t mem{};
 		double cpu_p{};         // defaults to = 0.0
 		double cpu_c{};         // defaults to = 0.0
 		char state = '0';
-		int64_t p_nice{};      // defaults to 0
+		int64_t p_nice{};
-		uint64_t ppid{};        // defaults to 0
+		uint64_t ppid{};
-		uint64_t cpu_s{};       // defaults to 0
+		uint64_t cpu_s{};
-		uint64_t cpu_t{};       // defaults to 0
+		uint64_t cpu_t{};
 		string prefix{};        // defaults to ""
-		size_t depth{};         // defaults to 0
+		size_t depth{};
-		size_t tree_index{};    // defaults to 0
+		size_t tree_index{};
-		bool collapsed{};       // defaults to false
+		bool collapsed{};
-		bool filtered{};        // defaults to false
+		bool filtered{};
 	};
 
 	//* Container for process info box
 	struct detail_container {
-		size_t last_pid{}; // defaults to 0
+		size_t last_pid{};
-		bool skip_smaps{}; // defaults to false
+		bool skip_smaps{};
 		proc_info entry;
 		string elapsed, parent, status, io_read, io_write, memory;
 		long long first_mem = -1;

src/btop_tools.cpp

@@ -54,9 +54,9 @@ namespace rng = std::ranges;
 //* Collection of escape codes and functions for terminal manipulation
 namespace Term {
 
-	atomic<bool> initialized{}; // defaults to false
+	atomic<bool> initialized{};
-	atomic<int> width{};        // defaults to 0
+	atomic<int> width{};
-	atomic<int> height{};       // defaults to 0
+	atomic<int> height{};
 	string current_tty;
 
 	namespace {

src/btop_tools.hpp

@@ -406,7 +406,7 @@ namespace Tools {
 	//* Sets atomic<bool> to true on construct, sets to false on destruct
 	class atomic_lock {
 		atomic<bool>& atom;
-		bool not_true{}; // defaults to false
+		bool not_true{};
 	public:
 		atomic_lock(atomic<bool>& atom, bool wait = false);
 		~atomic_lock();

src/linux/btop_collect.cpp

@@ -77,8 +77,8 @@ namespace Cpu {
 	vector<string> available_sensors = {"Auto"};
 	cpu_info current_cpu;
 	fs::path freq_path = "/sys/devices/system/cpu/cpufreq/policy0/scaling_cur_freq";
-	bool got_sensors{};     // defaults to false
+	bool got_sensors{};
-	bool cpu_temp_only{};   // defaults to false
+	bool cpu_temp_only{};
 
 	//* Populate found_sensors map
 	bool get_sensors();
@@ -92,9 +92,9 @@ namespace Cpu {
 	struct Sensor {
 		fs::path path;
 		string label;
-		int64_t temp{}; // defaults to 0
+		int64_t temp{};
-		int64_t high{}; // defaults to 0
+		int64_t high{};
-		int64_t crit{}; // defaults to 0
+		int64_t crit{};
 	};
 
 	std::unordered_map<string, Sensor> found_sensors;
@@ -542,14 +542,14 @@ namespace Cpu {
 	}
 
 	string get_cpuHz() {
-		static int failed{}; // defaults to 0
+		static int failed{};
 
 		if (failed > 4)
 			return ""s;
 
 		string cpuhz;
 		try {
-			double hz{}; // defaults to 0.0
+			double hz{};
 			//? Try to get freq from /sys/devices/system/cpu/cpufreq/policy first (faster)
 			if (not freq_path.empty()) {
 				hz = stod(readfile(freq_path, "0.0")) / 1000;
@@ -605,9 +605,9 @@ namespace Cpu {
 		//? Try to get core mapping from /proc/cpuinfo
 		ifstream cpuinfo(Shared::procPath / "cpuinfo");
 		if (cpuinfo.good()) {
-			int cpu{};  // defaults to 0
+			int cpu{};
-			int core{}; // defaults to 0
+			int core{};
-			int n{};    // defaults to 0
+			int n{};
 			for (string instr; cpuinfo >> instr;) {
 				if (instr == "processor") {
 					cpuinfo.ignore(SSmax, ':');
@@ -1554,10 +1554,10 @@ namespace Gpu {
 #endif
 
 namespace Mem {
-	bool has_swap{}; // defaults to false
+	bool has_swap{};
 	vector<string> fstab;
 	fs::file_time_type fstab_time;
-	int disk_ios{}; // defaults to 0
+	int disk_ios{};
 	vector<string> last_found;
 
 	//?* Find the filepath to the specified ZFS object's stat file
@@ -2045,10 +2045,10 @@ namespace Mem {
 		int64_t bytes_read;
 		int64_t bytes_write;
 		int64_t io_ticks;
-		int64_t bytes_read_total{};     // defaults to 0
+		int64_t bytes_read_total{};
-		int64_t bytes_write_total{};    // defaults to 0
+		int64_t bytes_write_total{};
-		int64_t io_ticks_total{};       // defaults to 0
+		int64_t io_ticks_total{};
-		int64_t objects_read{};         // defaults to 0
+		int64_t objects_read{};
 
 		// looking through all files that start with 'objset'
 		for (const auto& file: fs::directory_iterator(disk.stat)) {
@@ -2124,11 +2124,11 @@ namespace Net {
 	net_info empty_net = {};
 	vector<string> interfaces;
 	string selected_iface;
-	int errors{}; // defaults to 0
+	int errors{};
 	std::unordered_map<string, uint64_t> graph_max = { {"download", {}}, {"upload", {}} };
 	std::unordered_map<string, array<int, 2>> max_count = { {"download", {}}, {"upload", {}} };
 	bool rescale{true};
-	uint64_t timestamp{}; // defaults to 0
+	uint64_t timestamp{};
 
 	//* RAII wrapper for getifaddrs
 	class getifaddr_wrapper {
@@ -2217,7 +2217,7 @@ namespace Net {
 					auto& saved_stat = net.at(iface).stat.at(dir);
 					auto& bandwidth = net.at(iface).bandwidth.at(dir);
 
-					uint64_t val{}; // defaults to 0
+					uint64_t val{};
 					try { val = (uint64_t)stoull(readfile(sys_file, "0")); }
 					catch (const std::invalid_argument&) {}
 					catch (const std::out_of_range&) {}
@@ -2337,15 +2337,15 @@ namespace Proc {
 	std::unordered_map<string, string> uid_user;
 	string current_sort;
 	string current_filter;
-	bool current_rev{}; // defaults to false
+	bool current_rev{};
 
 	fs::file_time_type passwd_time;
 
 	uint64_t cputimes;
 	int collapse = -1, expand = -1;
-	uint64_t old_cputimes{};    // defaults to 0
+	uint64_t old_cputimes{};
-	atomic<int> numpids{};      // defaults to 0
+	atomic<int> numpids{};
-	int filter_found{};         // defaults to 0
+	int filter_found{};
 
 	detail_container detailed;
 	constexpr size_t KTHREADD = 2;
@@ -2477,7 +2477,7 @@ namespace Proc {
 		const int cmult = (per_core) ? Shared::coreCount : 1;
 		bool got_detailed = false;
 
-		static size_t proc_clear_count{}; // defaults to 0
+		static size_t proc_clear_count{};
 
 		//* Use pids from last update if only changing filter, sorting or tree options
 		if (no_update and not current_procs.empty()) {
@@ -2552,7 +2552,7 @@ namespace Proc {
 
 				//? Check if pid already exists in current_procs
 				auto find_old = rng::find(current_procs, pid, &proc_info::pid);
-				bool no_cache{}; // defaults to false
+				bool no_cache{};
 				if (find_old == current_procs.end()) {
 					current_procs.push_back({pid});
 					find_old = current_procs.end() - 1;