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Utilities/top: Add sort-by and delay-time options

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Add optional arguments to top so that the user can choose which field to
sort by and change the update frequency.
This commit is contained in:
Marcus Nilsson 2021-06-26 21:31:31 +02:00 committed by Andreas Kling
parent 55fa2329de
commit adb80c33ec
Notes: sideshowbarker 2024-07-18 11:24:20 +09:00 
Author: https://github.com/metmo
Commit: https://github.com/SerenityOS/serenity/commit/adb80c33ec6
Pull-request: https://github.com/SerenityOS/serenity/pull/8270
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/awesomekling
1 changed files with 87 additions and 4 deletions
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89
Userland/Utilities/top.cpp
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@ -11,6 +11,7 @@
#include <AK/QuickSort.h>
#include <AK/String.h>
#include <AK/Vector.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/ProcessStatisticsReader.h>
#include <fcntl.h>
#include <signal.h>
@ -19,6 +20,23 @@
#include <sys/ioctl.h>
#include <unistd.h>
struct TopOption {
enum class SortBy {
Pid,
Tid,
Priority,
UserName,
State,
Virt,
Phys,
Cpu,
Name
};
SortBy sort_by { SortBy::Cpu };
int delay_time { 1 };
};
struct ThreadData {
int tid;
pid_t pid;
@ -114,7 +132,49 @@ static Snapshot get_snapshot()
static bool g_window_size_changed = true;
static struct winsize g_window_size;
int main(int, char**)
static void parse_args(int argc, char** argv, TopOption& top_option)
{
Core::ArgsParser::Option sort_by_option {
true,
"Sort by field [pid, tid, pri, user, state, virt, phys, cpu, name]",
"sort-by",
's',
nullptr,
[&top_option](const char* s) {
StringView sort_by_option { s };
if (sort_by_option == "pid"sv)
top_option.sort_by = TopOption::SortBy::Pid;
else if (sort_by_option == "tid"sv)
top_option.sort_by = TopOption::SortBy::Tid;
else if (sort_by_option == "pri"sv)
top_option.sort_by = TopOption::SortBy::Priority;
else if (sort_by_option == "user"sv)
top_option.sort_by = TopOption::SortBy::UserName;
else if (sort_by_option == "state"sv)
top_option.sort_by = TopOption::SortBy::State;
else if (sort_by_option == "virt"sv)
top_option.sort_by = TopOption::SortBy::Virt;
else if (sort_by_option == "phys"sv)
top_option.sort_by = TopOption::SortBy::Phys;
else if (sort_by_option == "cpu"sv)
top_option.sort_by = TopOption::SortBy::Cpu;
else if (sort_by_option == "name"sv)
top_option.sort_by = TopOption::SortBy::Name;
else
return false;
return true;
}
};
Core::ArgsParser args_parser;
args_parser.set_general_help("Display information about processes");
args_parser.add_option(top_option.delay_time, "Delay time interval in seconds", "delay-time", 'd', nullptr);
args_parser.add_option(move(sort_by_option));
args_parser.parse(argc, argv);
}
int main(int argc, char** argv)
{
if (pledge("stdio rpath tty sigaction ", nullptr) < 0) {
perror("pledge");
@ -142,6 +202,9 @@ int main(int, char**)
return 1;
}
TopOption top_option;
parse_args(argc, argv, top_option);
Vector<ThreadData*> threads;
auto prev = get_snapshot();
usleep(10000);
@ -185,8 +248,28 @@ int main(int, char**)
threads.append(&it.value);
}
quick_sort(threads, [](auto* p1, auto* p2) {
quick_sort(threads, [&top_option](auto* p1, auto* p2) {
switch (top_option.sort_by) {
case TopOption::SortBy::Pid:
return p2->pid > p1->pid;
case TopOption::SortBy::Tid:
return p2->tid > p1->tid;
case TopOption::SortBy::Priority:
return p2->priority > p1->priority;
case TopOption::SortBy::UserName:
return p2->username > p1->username;
case TopOption::SortBy::State:
return p2->state > p1->state;
case TopOption::SortBy::Virt:
return p2->amount_virtual < p1->amount_virtual;
case TopOption::SortBy::Phys:
return p2->amount_resident < p1->amount_resident;
case TopOption::SortBy::Name:
return p2->name > p1->name;
case TopOption::SortBy::Cpu:
default:
return p2->times_scheduled_since_prev < p1->times_scheduled_since_prev;
}
});
int row = 0;
@ -211,7 +294,7 @@ int main(int, char**)
}
threads.clear_with_capacity();
prev = move(current);
sleep(1);
sleep(top_option.delay_time);
}
return 0;
}