path: root/src/btop_shared.hpp

/* Copyright 2021 Aristocratos (jakob@qvantnet.com)

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

	   http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

indent = tab
tab-size = 4
*/

#pragma once

#include <array>
#include <atomic>
#include <deque>
#include <filesystem>
#include <string>
#include <tuple>
#include <vector>
#include <unordered_map>
#include <unistd.h>

// From `man 3 getifaddrs`: <net/if.h> must be included before <ifaddrs.h>
// clang-format off
#include <net/if.h>
#include <ifaddrs.h>
// clang-format on

#if defined(__FreeBSD__) || defined(__OpenBSD__)
# include <kvm.h>
#endif

using std::array;
using std::atomic;
using std::deque;
using std::string;
using std::tuple;
using std::vector;

using namespace std::literals; // for operator""s

void term_resize(bool force=false);
void banner_gen();

extern void clean_quit(int sig);

namespace Global {
	extern const vector<array<string, 2>> Banner_src;
	extern const string Version;
	extern atomic<bool> quitting;
	extern string exit_error_msg;
	extern atomic<bool> thread_exception;
	extern string banner;
	extern atomic<bool> resized;
	extern string overlay;
	extern string clock;
	extern uid_t real_uid, set_uid;
	extern atomic<bool> init_conf;
}

namespace Runner {

	extern atomic<bool> active;
	extern atomic<bool> reading;
	extern atomic<bool> stopping;
	extern atomic<bool> redraw;
	extern atomic<bool> coreNum_reset;
	extern pthread_t runner_id;
	extern bool pause_output;
	extern string debug_bg;

	void run(const string& box="", bool no_update = false, bool force_redraw = false);
	void stop();

}

namespace Tools {
	//* Platform specific function for system_uptime (seconds since last restart)
	double system_uptime();
}

namespace Shared {
	//* Initialize platform specific needed variables and check for errors
	void init();

	extern long coreCount, page_size, clk_tck;

#if defined(__FreeBSD__) || defined(__OpenBSD__)
	struct KvmDeleter {
		void operator()(kvm_t* handle) {
			kvm_close(handle);
		}
	};
	using KvmPtr = std::unique_ptr<kvm_t, KvmDeleter>;
#endif
}


namespace Gpu {
#ifdef GPU_SUPPORT
	extern vector<string> box;
	extern int width, height, min_width, min_height;
	extern vector<int> x_vec, y_vec;
	extern vector<bool> redraw;
	extern int shown;
	extern vector<char> shown_panels;
	extern vector<string> gpu_names;
	extern vector<int> gpu_b_height_offsets;
	extern long long gpu_pwr_total_max;

	extern std::unordered_map<string, deque<long long>> shared_gpu_percent; // averages, power/vram total

  const array mem_names { "used"s, "free"s };

	//* Container for process information // TODO
	/*struct proc_info {
    unsigned int pid;
    unsigned long long mem;
	};*/

	//* Container for supported Gpu::*::collect() functions
	struct gpu_info_supported {
		bool gpu_utilization = true,
		   	 mem_utilization = true,
				 gpu_clock = true,
				 mem_clock = true,
				 pwr_usage = true,
				 pwr_state = true,
				 temp_info = true,
				 mem_total = true,
				 mem_used = true,
				 pcie_txrx = true;
	};

	//* Per-device container for GPU info
	struct gpu_info {
		std::unordered_map<string, deque<long long>> gpu_percent = {
			{"gpu-totals", {}},
			{"gpu-vram-totals", {}},
			{"gpu-pwr-totals", {}},
		};
		unsigned int gpu_clock_speed; // MHz

		long long pwr_usage; // mW
		long long pwr_max_usage = 255000;
		long long pwr_state;

		deque<long long> temp = {0};
		long long temp_max = 110;

		long long mem_total = 0;
		long long mem_used = 0;
		deque<long long> mem_utilization_percent = {0}; // TODO: properly handle GPUs that can't report some stats
		long long mem_clock_speed = 0; // MHz

		long long pcie_tx = 0; // KB/s
		long long pcie_rx = 0;

		gpu_info_supported supported_functions;

		// vector<proc_info> graphics_processes = {}; // TODO
		// vector<proc_info> compute_processes = {};
	};

	namespace Nvml {
		extern bool shutdown();
	}
	namespace Rsmi {
		extern bool shutdown();
	}

	//* Collect gpu stats and temperatures
    auto collect(bool no_update = false) -> vector<gpu_info>&;

	//* Draw contents of gpu box using <gpus> as source
  	string draw(const gpu_info& gpu, unsigned long index, bool force_redraw, bool data_same);
#else
	struct gpu_info {
		bool supported = false;
	};
#endif
}

namespace Cpu {
	extern string box;
	extern int x, y, width, height, min_width, min_height;
	extern bool shown, redraw, got_sensors, cpu_temp_only, has_battery;
	extern string cpuName, cpuHz;
	extern vector<string> available_fields;
	extern vector<string> available_sensors;
	extern tuple<int, float, long, string> current_bat;

	struct cpu_info {
		std::unordered_map<string, deque<long long>> cpu_percent = {
			{"total", {}},
			{"user", {}},
			{"nice", {}},
			{"system", {}},
			{"idle", {}},
			{"iowait", {}},
			{"irq", {}},
			{"softirq", {}},
			{"steal", {}},
			{"guest", {}},
			{"guest_nice", {}}
		};
		vector<deque<long long>> core_percent;
		vector<deque<long long>> temp;
		long long temp_max = 0;
		array<double, 3> load_avg;
	};

	//* Collect cpu stats and temperatures
	auto collect(bool no_update = false) -> cpu_info&;

	//* Draw contents of cpu box using <cpu> as source
    string draw(const cpu_info& cpu, const vector<Gpu::gpu_info>& gpu, bool force_redraw = false, bool data_same = false);

	//* Parse /proc/cpu info for mapping of core ids
	auto get_core_mapping() -> std::unordered_map<int, int>;
	extern std::unordered_map<int, int> core_mapping;

	auto get_cpuHz() -> string;

	//* Get battery info from /sys
	auto get_battery() -> tuple<int, float, long, string>;
}

namespace Mem {
	extern string box;
	extern int x, y, width, height, min_width, min_height;
	extern bool has_swap, shown, redraw;
	const array mem_names { "used"s, "available"s, "cached"s, "free"s };
	const array swap_names { "swap_used"s, "swap_free"s };
	extern int disk_ios;

	struct disk_info {
		std::filesystem::path dev;
		string name;
		string fstype{};                // defaults to ""
		std::filesystem::path stat{};   // defaults to ""
		int64_t total{};
		int64_t used{};
		int64_t free{};
		int used_percent{};
		int free_percent{};

		array<int64_t, 3> old_io = {0,