2021-05-11 09:46:41 +12:00
|
|
|
/* 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
|
|
|
|
*/
|
|
|
|
|
|
|
|
#ifndef _btop_linux_included_
|
2021-05-15 23:24:24 +12:00
|
|
|
#define _btop_linux_included_ 1
|
2021-05-11 09:46:41 +12:00
|
|
|
|
|
|
|
#include <string>
|
|
|
|
#include <vector>
|
|
|
|
#include <tuple>
|
|
|
|
#include <map>
|
|
|
|
#include <atomic>
|
|
|
|
#include <fstream>
|
|
|
|
#include <filesystem>
|
|
|
|
#include <ranges>
|
|
|
|
|
|
|
|
#include <unistd.h>
|
|
|
|
|
|
|
|
#include <btop_config.h>
|
|
|
|
#include <btop_globs.h>
|
|
|
|
#include <btop_tools.h>
|
|
|
|
|
|
|
|
namespace fs = std::filesystem;
|
|
|
|
using namespace std;
|
|
|
|
|
2021-05-14 07:11:10 +12:00
|
|
|
namespace Global {
|
|
|
|
|
2021-05-15 23:24:24 +12:00
|
|
|
const string System = "linux";
|
2021-05-14 07:11:10 +12:00
|
|
|
filesystem::path proc_path;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
2021-05-15 23:24:24 +12:00
|
|
|
//? --------------------------------------------------- FUNCTIONS -----------------------------------------------------
|
|
|
|
|
|
|
|
double system_uptime(){
|
|
|
|
string upstr;
|
|
|
|
ifstream pread("/proc/uptime");
|
|
|
|
getline(pread, upstr, ' ');
|
|
|
|
pread.close();
|
|
|
|
return stod(upstr);
|
|
|
|
}
|
|
|
|
|
|
|
|
//? ------------------------------------------------- NAMESPACES ------------------------------------------------------
|
|
|
|
|
2021-05-15 04:54:37 +12:00
|
|
|
namespace Proc {
|
|
|
|
namespace {
|
|
|
|
uint64_t tstamp;
|
|
|
|
long int clk_tck;
|
2021-05-15 23:24:24 +12:00
|
|
|
struct p_cache {
|
|
|
|
string name, cmd, user;
|
|
|
|
uint64_t cpu_t = 0, cpu_s = 0;
|
|
|
|
};
|
|
|
|
map<uint, p_cache> cache;
|
2021-05-15 04:54:37 +12:00
|
|
|
map<string, string> uid_user;
|
|
|
|
fs::path passwd_path;
|
|
|
|
fs::file_time_type passwd_time;
|
|
|
|
uint counter = 0;
|
|
|
|
long page_size = sysconf(_SC_PAGE_SIZE);
|
2021-05-15 12:56:04 +12:00
|
|
|
|
2021-05-15 04:54:37 +12:00
|
|
|
}
|
|
|
|
|
2021-05-15 23:24:24 +12:00
|
|
|
atomic<bool> stop (false);
|
|
|
|
atomic<bool> running (false);
|
2021-05-15 04:54:37 +12:00
|
|
|
vector<string> sort_vector = {
|
|
|
|
"pid",
|
|
|
|
"name",
|
|
|
|
"command",
|
|
|
|
"threads",
|
|
|
|
"user",
|
|
|
|
"memory",
|
|
|
|
"cpu direct",
|
|
|
|
"cpu lazy",
|
|
|
|
};
|
|
|
|
map<string, uint> sort_map;
|
|
|
|
|
2021-05-15 12:56:04 +12:00
|
|
|
//* proc_info: pid, name, cmd, threads, user, mem, cpu_p, cpu_c
|
|
|
|
struct proc_info {
|
2021-05-15 23:24:24 +12:00
|
|
|
uint pid;
|
2021-05-15 12:56:04 +12:00
|
|
|
string name, cmd;
|
|
|
|
size_t threads;
|
|
|
|
string user;
|
|
|
|
uint64_t mem;
|
|
|
|
double cpu_p, cpu_c;
|
|
|
|
};
|
2021-05-15 04:54:37 +12:00
|
|
|
|
2021-05-13 13:11:29 +12:00
|
|
|
|
2021-05-15 12:56:04 +12:00
|
|
|
//* Collects process information from /proc and returns a vector of proc_info structs
|
2021-05-13 13:11:29 +12:00
|
|
|
auto collect(string sorting="pid", bool reverse=false, string filter=""){
|
|
|
|
running.store(true);
|
2021-05-15 23:24:24 +12:00
|
|
|
uint pid;
|
2021-05-14 07:11:10 +12:00
|
|
|
uint64_t cpu_t, rss_mem;
|
2021-05-13 13:11:29 +12:00
|
|
|
double cpu, cpu_s;
|
2021-05-15 23:24:24 +12:00
|
|
|
bool new_cache;
|
2021-05-14 07:11:10 +12:00
|
|
|
size_t threads;
|
2021-05-13 13:11:29 +12:00
|
|
|
ifstream pread;
|
2021-05-15 23:24:24 +12:00
|
|
|
string pid_str, name, cmd, attr, user, instr, uid, status, tmpstr;
|
2021-05-13 13:11:29 +12:00
|
|
|
auto since_last = time_ms() - tstamp;
|
|
|
|
if (since_last < 1) since_last = 1;
|
|
|
|
auto uptime = system_uptime();
|
2021-05-15 04:54:37 +12:00
|
|
|
auto sortint = (sort_map.contains(sorting)) ? sort_map[sorting] : 7;
|
2021-05-13 13:11:29 +12:00
|
|
|
vector<string> pstat;
|
2021-05-15 12:56:04 +12:00
|
|
|
vector<proc_info> procs;
|
2021-05-15 23:24:24 +12:00
|
|
|
vector<uint> c_pids;
|
2021-05-13 13:11:29 +12:00
|
|
|
|
|
|
|
//* Update uid_user map if /etc/passwd changed since last run
|
2021-05-14 07:11:10 +12:00
|
|
|
if (!passwd_path.empty() && fs::last_write_time(passwd_path) != passwd_time) {
|
2021-05-13 13:11:29 +12:00
|
|
|
string r_uid, r_user;
|
2021-05-14 07:11:10 +12:00
|
|
|
passwd_time = fs::last_write_time(passwd_path);
|
2021-05-13 13:11:29 +12:00
|
|
|
uid_user.clear();
|
2021-05-14 07:11:10 +12:00
|
|
|
ifstream pread(passwd_path);
|
|
|
|
if (pread.good()) {
|
|
|
|
while (true){
|
|
|
|
getline(pread, r_user, ':');
|
|
|
|
pread.ignore(numeric_limits<streamsize>::max(), ':');
|
|
|
|
getline(pread, r_uid, ':');
|
|
|
|
uid_user[r_uid] = r_user;
|
|
|
|
pread.ignore(numeric_limits<streamsize>::max(), '\n');
|
|
|
|
if (pread.eof()) break;
|
|
|
|
}
|
2021-05-13 13:11:29 +12:00
|
|
|
}
|
|
|
|
pread.close();
|
|
|
|
}
|
2021-05-11 09:46:41 +12:00
|
|
|
|
|
|
|
|
2021-05-15 23:24:24 +12:00
|
|
|
//* Iterate over all pids in /proc and get relevant values
|
2021-05-14 07:11:10 +12:00
|
|
|
for (auto& d: fs::directory_iterator(Global::proc_path)){
|
2021-05-13 13:11:29 +12:00
|
|
|
if (stop.load()) {
|
|
|
|
procs.clear();
|
|
|
|
running.store(false);
|
|
|
|
stop.store(false);
|
|
|
|
return procs;
|
|
|
|
}
|
|
|
|
pid_str = fs::path(d.path()).filename();
|
|
|
|
cpu = 0.0;
|
2021-05-14 07:11:10 +12:00
|
|
|
rss_mem = 0;
|
2021-05-15 23:24:24 +12:00
|
|
|
new_cache = false;
|
2021-05-13 13:11:29 +12:00
|
|
|
if (d.is_directory() && isdigit(pid_str[0])) {
|
2021-05-15 23:24:24 +12:00
|
|
|
pid = stoul(pid_str);
|
|
|
|
c_pids.push_back(pid);
|
2021-05-14 07:11:10 +12:00
|
|
|
|
2021-05-13 13:11:29 +12:00
|
|
|
//* Cache program name, command and username
|
|
|
|
if (!cache.contains(pid)) {
|
2021-05-15 23:24:24 +12:00
|
|
|
name.clear(); cmd.clear(); user.clear();
|
|
|
|
new_cache = true;
|
2021-05-14 07:11:10 +12:00
|
|
|
if (fs::exists((string)d.path() + "/comm")) {
|
|
|
|
pread.clear(); name.clear();
|
2021-05-11 09:46:41 +12:00
|
|
|
ifstream pread((string)d.path() + "/comm");
|
2021-05-14 07:11:10 +12:00
|
|
|
if (pread.good()) getline(pread, name);
|
2021-05-11 09:46:41 +12:00
|
|
|
pread.close();
|
|
|
|
}
|
2021-05-14 07:11:10 +12:00
|
|
|
if (fs::exists((string)d.path() + "/cmdline")) {
|
|
|
|
pread.clear(); cmd.clear(); tmpstr.clear();
|
2021-05-11 09:46:41 +12:00
|
|
|
ifstream pread((string)d.path() + "/cmdline");
|
2021-05-14 07:11:10 +12:00
|
|
|
if (pread.good()) while(getline(pread, tmpstr, '\0')) cmd += tmpstr + " ";
|
2021-05-11 09:46:41 +12:00
|
|
|
pread.close();
|
2021-05-13 13:11:29 +12:00
|
|
|
if (!cmd.empty()) cmd.pop_back();
|
2021-05-11 09:46:41 +12:00
|
|
|
}
|
2021-05-13 13:11:29 +12:00
|
|
|
if (fs::exists((string)d.path() + "/status")) {
|
2021-05-14 07:11:10 +12:00
|
|
|
pread.clear(); status.clear(); uid.clear();
|
2021-05-13 13:11:29 +12:00
|
|
|
ifstream pread((string)d.path() + "/status");
|
2021-05-14 07:11:10 +12:00
|
|
|
if (pread.good()) {
|
|
|
|
while (!pread.eof()){
|
|
|
|
getline(pread, status, ':');
|
|
|
|
if (status == "Uid") {
|
|
|
|
pread.ignore();
|
|
|
|
getline(pread, uid, '\t');
|
|
|
|
break;
|
|
|
|
} else {
|
|
|
|
pread.ignore(numeric_limits<streamsize>::max(), '\n');
|
|
|
|
}
|
2021-05-13 13:11:29 +12:00
|
|
|
}
|
|
|
|
}
|
|
|
|
pread.close();
|
2021-05-14 07:11:10 +12:00
|
|
|
user = (!uid.empty() && uid_user.contains(uid)) ? uid_user.at(uid) : uid;
|
2021-05-11 09:46:41 +12:00
|
|
|
}
|
2021-05-15 12:56:04 +12:00
|
|
|
cache[pid] = p_cache(name, cmd, user);
|
2021-05-11 09:46:41 +12:00
|
|
|
}
|
|
|
|
|
2021-05-15 23:24:24 +12:00
|
|
|
//* Get cpu usage, cpu cumulative and threads from /proc/[pid]/stat
|
|
|
|
if (fs::exists((string)d.path() + "/stat")) {
|
|
|
|
pread.clear(); pstat.clear();
|
|
|
|
ifstream pread((string)d.path() + "/stat");
|
|
|
|
if (pread.good()) while (getline(pread, instr, ' ')) pstat.push_back(instr);
|
|
|
|
pread.close();
|
|
|
|
|
|
|
|
if (pstat.size() < 37) continue;
|
|
|
|
|
|
|
|
//? Process number of threads
|
|
|
|
threads = stoul(pstat[19]);
|
|
|
|
|
|
|
|
//? Process utime + stime
|
|
|
|
cpu_t = stoull(pstat[13]) + stoull(pstat[14]);
|
|
|
|
|
|
|
|
//? Cache cpu times and cpu seconds
|
|
|
|
if (new_cache) {
|
|
|
|
cache[pid].cpu_t = cpu_t;
|
|
|
|
cache[pid].cpu_s = stoull(pstat[21]);
|
|
|
|
}
|
|
|
|
|
|
|
|
//? Cache process start time
|
|
|
|
// if (!cpu_second.contains(pid)) cpu_second[pid] = stoull(pstat[21]);
|
|
|
|
|
|
|
|
//? Process cpu usage since last update, 100'000 because (100 percent * 1000 milliseconds) for correct conversion
|
|
|
|
cpu = static_cast<double>(100000 * (cpu_t - cache[pid].cpu_t) / since_last) / clk_tck;
|
|
|
|
|
|
|
|
//? Process cumulative cpu usage since process start
|
|
|
|
cpu_s = static_cast<double>((cpu_t / clk_tck) / (uptime - (cache[pid].cpu_s / clk_tck)));
|
|
|
|
|
|
|
|
//? Add latest cpu times to cache
|
|
|
|
cache[pid].cpu_t = cpu_t;
|
|
|
|
}
|
|
|
|
|
|
|
|
//* Get RSS memory in bytes from /proc/[pid]/statm
|
|
|
|
if (fs::exists((string)d.path() + "/statm")) {
|
|
|
|
pread.clear(); tmpstr.clear();
|
|
|
|
ifstream pread((string)d.path() + "/statm");
|
|
|
|
if (pread.good()) {
|
|
|
|
pread.ignore(numeric_limits<streamsize>::max(), ' ');
|
|
|
|
pread >> rss_mem;
|
|
|
|
rss_mem *= page_size;
|
|
|
|
}
|
|
|
|
pread.close();
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
2021-05-13 13:11:29 +12:00
|
|
|
// //* Match filter if applicable
|
|
|
|
if (!filter.empty() &&
|
2021-05-14 07:11:10 +12:00
|
|
|
pid_str.find(filter) == string::npos && //? Pid
|
2021-05-15 12:56:04 +12:00
|
|
|
cache[pid].name.find(filter) == string::npos && //? Program
|
|
|
|
cache[pid].cmd.find(filter) == string::npos && //? Command
|
|
|
|
cache[pid].user.find(filter) == string::npos //? User
|
2021-05-13 13:11:29 +12:00
|
|
|
) continue;
|
|
|
|
|
2021-05-15 23:24:24 +12:00
|
|
|
//* Create proc_info
|
2021-05-15 12:56:04 +12:00
|
|
|
procs.push_back(proc_info(pid, cache[pid].name, cache[pid].cmd, threads, cache[pid].user, rss_mem, cpu, cpu_s));
|
2021-05-11 09:46:41 +12:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-05-13 13:11:29 +12:00
|
|
|
// auto st = time_ms();
|
|
|
|
|
|
|
|
//* Sort processes vector
|
2021-05-15 12:56:04 +12:00
|
|
|
ranges::sort(procs, [&sortint, &reverse](proc_info& a, proc_info& b)
|
2021-05-14 07:11:10 +12:00
|
|
|
{
|
2021-05-11 09:46:41 +12:00
|
|
|
switch (sortint) {
|
2021-05-15 12:56:04 +12:00
|
|
|
case 0: return (reverse) ? a.pid < b.pid : a.pid > b.pid;
|
|
|
|
case 1: return (reverse) ? a.name < b.name : a.name > b.name;
|
|
|
|
case 2: return (reverse) ? a.cmd < b.cmd : a.cmd > b.cmd;
|
|
|
|
case 3: return (reverse) ? a.threads < b.threads : a.threads > b.threads;
|
|
|
|
case 4: return (reverse) ? a.user < b.user : a.user > b.user;
|
|
|
|
case 5: return (reverse) ? a.mem < b.mem : a.mem > b.mem;
|
2021-05-15 23:24:24 +12:00
|
|
|
case 6: return (reverse) ? a.cpu_p < b.cpu_p : a.cpu_p > b.cpu_p;
|
|
|
|
case 7: return (reverse) ? a.cpu_c < b.cpu_c : a.cpu_c > b.cpu_c;
|
2021-05-11 09:46:41 +12:00
|
|
|
}
|
2021-05-13 13:11:29 +12:00
|
|
|
return false;
|
2021-05-11 09:46:41 +12:00
|
|
|
}
|
2021-05-13 13:11:29 +12:00
|
|
|
);
|
|
|
|
|
2021-05-14 07:11:10 +12:00
|
|
|
//* When using "cpu lazy" sorting push processes with high cpu usage to the front regardless of cumulative usage
|
2021-05-15 23:24:24 +12:00
|
|
|
if (sortint == 7 && !reverse) {
|
2021-05-13 13:11:29 +12:00
|
|
|
double max = 10.0, target = 30.0;
|
|
|
|
for (size_t i = 0, offset = 0; i < procs.size(); i++) {
|
2021-05-15 12:56:04 +12:00
|
|
|
if (i <= 5 && procs[i].cpu_p > max) max = procs[i].cpu_p;
|
2021-05-13 13:11:29 +12:00
|
|
|
else if (i == 6) target = (max > 30.0) ? max : 10.0;
|
2021-05-15 12:56:04 +12:00
|
|
|
if (i == offset && procs[i].cpu_p > 30.0) offset++;
|
|
|
|
else if (procs[i].cpu_p > target) rotate(procs.begin() + offset, procs.begin() + i, procs.begin() + i + 1);
|
2021-05-13 13:11:29 +12:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-05-14 07:11:10 +12:00
|
|
|
//* Clear all cached values at a regular interval to get rid of dead processes
|
2021-05-15 23:24:24 +12:00
|
|
|
if (++counter >= 5 || (filter.empty() && cache.size() > procs.size() + 100)) {
|
|
|
|
map<uint, p_cache> r_cache;
|
2021-05-13 13:11:29 +12:00
|
|
|
counter = 0;
|
2021-05-15 23:24:24 +12:00
|
|
|
for (auto& p : c_pids){
|
|
|
|
r_cache[p] = cache[p];
|
|
|
|
}
|
|
|
|
cache = move(r_cache);
|
|
|
|
|
2021-05-13 13:11:29 +12:00
|
|
|
}
|
|
|
|
|
|
|
|
tstamp = time_ms();
|
|
|
|
running.store(false);
|
2021-05-11 09:46:41 +12:00
|
|
|
return procs;
|
|
|
|
}
|
2021-05-13 13:11:29 +12:00
|
|
|
|
2021-05-15 23:24:24 +12:00
|
|
|
//* Initialize needed variables for collect
|
2021-05-15 04:54:37 +12:00
|
|
|
void init(){
|
2021-05-13 13:11:29 +12:00
|
|
|
clk_tck = sysconf(_SC_CLK_TCK);
|
|
|
|
tstamp = time_ms();
|
2021-05-14 07:11:10 +12:00
|
|
|
passwd_path = (fs::exists(fs::path("/etc/passwd"))) ? fs::path("/etc/passwd") : passwd_path;
|
2021-05-15 04:54:37 +12:00
|
|
|
uint i = 0;
|
|
|
|
for (auto& item : sort_vector) sort_map[item] = i++;
|
2021-05-13 13:11:29 +12:00
|
|
|
}
|
2021-05-11 09:46:41 +12:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
2021-05-13 13:11:29 +12:00
|
|
|
#endif
|