beenull/ladybird
1
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2024-11-26 09:30:24 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 7

ProcessManager: Use a CFile for parsing /proc/memstat.

Browse source
This commit is contained in:
Andreas Kling 2019-04-18 00:57:34 +02:00
parent c931eaa22c
commit ab539460de
Notes: sideshowbarker 2024-07-19 14:40:31 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/ab539460de9
2 changed files with 9 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
Applications/ProcessManager/MemoryStatsWidget.cpp
View file

@ -8,7 +8,10 @@
MemoryStatsWidget::MemoryStatsWidget(GWidget* parent)
: GWidget(parent)
, m_proc_memstat("/proc/memstat")
{
if (!m_proc_memstat.open(CIODevice::OpenMode::ReadOnly))
ASSERT_NOT_REACHED();
set_size_policy(SizePolicy::Fill, SizePolicy::Fixed);
set_preferred_size({ 0, 72 });
@ -54,18 +57,13 @@ static inline size_t bytes_to_kb(size_t bytes)
void MemoryStatsWidget::refresh()
{
FILE* fp = fopen("/proc/memstat", "r");
if (!fp) {
perror("failed to open /proc/memstat");
exit(1);
}
m_proc_memstat.seek(0);
for (;;) {
char buf[BUFSIZ];
char* ptr = fgets(buf, sizeof(buf), fp);
if (!ptr)
auto line = m_proc_memstat.read_line(BUFSIZ);
if (line.is_null())
break;
auto parts = String(buf, Chomp).split(',');
auto parts = String::from_byte_buffer(line, Chomp).split(',');
if (parts.size() < 9)
break;
bool ok;
@ -99,8 +97,6 @@ void MemoryStatsWidget::refresh()
m_kmalloc_count_label->set_text(String::format("%u/%u (+%u)", kmalloc_call_count, kfree_call_count, kmalloc_call_count - kfree_call_count));
break;
}
fclose(fp);
}
void MemoryStatsWidget::timer_event(CTimerEvent&)

2
Applications/ProcessManager/MemoryStatsWidget.h
View file

@ -1,6 +1,7 @@
#pragma once
#include <LibGUI/GWidget.h>
#include <LibCore/CFile.h>
class GLabel;
@ -19,4 +20,5 @@ private:
GLabel* m_supervisor_physical_pages_label { nullptr };
GLabel* m_kmalloc_label { nullptr };
GLabel* m_kmalloc_count_label { nullptr };
CFile m_proc_memstat;
};