beenull/ladybird
1
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2024-11-23 08:00:20 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

top: Limit printed process name characters to the available space

Browse source 
It looks much nicer if we don't break the line. You can resize the
terminal if you want to see the full process name.
This commit is contained in:
Andreas Kling 2020-07-27 17:00:53 +02:00
parent 417e3877d7
commit b6e29656a1
Notes: sideshowbarker 2024-07-19 04:33:54 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/b6e29656a16
1 changed files with 30 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

34
Userland/top.cpp
View file

@ -33,8 +33,10 @@
#include <AK/Vector.h>
#include <LibCore/ProcessStatisticsReader.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <unistd.h>
struct ThreadData {
@ -131,9 +133,12 @@ static Snapshot get_snapshot()
return snapshot;
}
static bool g_window_size_changed = true;
static struct winsize g_window_size;
int main(int, char**)
{
if (pledge("stdio rpath", nullptr) < 0) {
if (pledge("stdio rpath tty sigaction ", nullptr) < 0) {
perror("pledge");
return 1;
}
@ -150,10 +155,28 @@ int main(int, char**)
unveil(nullptr, nullptr);
signal(SIGWINCH, [](int) {
g_window_size_changed = true;
});
if (pledge("stdio rpath tty", nullptr) < 0) {
perror("pledge");
return 1;
}
Vector<ThreadData*> threads;
auto prev = get_snapshot();
usleep(10000);
for (;;) {
if (g_window_size_changed) {
int rc = ioctl(STDOUT_FILENO, TIOCGWINSZ, &g_window_size);
if (rc < 0) {
perror("ioctl(TIOCGWINSZ)");
return 1;
}
g_window_size_changed = false;
}
auto current = get_snapshot();
auto sum_diff = current.sum_times_scheduled - prev.sum_times_scheduled;
@ -189,7 +212,7 @@ int main(int, char**)
});
for (auto* thread : threads) {
printf("%6d %3d %2u %-9s %-10s %6zu %6zu %2u.%1u %s\n",
int nprinted = printf("%6d %3d %2u %-9s %-10s %6zu %6zu %2u.%1u ",
thread->pid,
thread->tid,
thread->priority,
@ -198,8 +221,11 @@ int main(int, char**)
thread->amount_virtual / 1024,
thread->amount_resident / 1024,
thread->cpu_percent,
thread->cpu_percent_decimal,
thread->name.characters());
thread->cpu_percent_decimal);
int remaining = g_window_size.ws_col - nprinted;
fwrite(thread->name.characters(), 1, max(0, min(remaining, (int)thread->name.length())), stdout);
putchar('\n');
}
threads.clear_with_capacity();
prev = move(current);