mirror of
https://github.com/fergalmoran/ladybird.git
synced 2026-01-08 09:35:15 +00:00
712ae73581
Previously it was not possible to see what each thread in a process was up to, or how much CPU it was consuming. This patch fixes that. SystemMonitor and "top" now show threads instead of just processes. "ps" is gonna need some more fixing, but it at least builds for now. Fixes #66.
68 lines
1.7 KiB
C++
68 lines
1.7 KiB
C++
#include <AK/JsonArray.h>
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#include <AK/JsonObject.h>
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#include <AK/JsonValue.h>
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#include <LibCore/CProcessStatisticsReader.h>
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#include <WindowServer/WSCPUMonitor.h>
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#include <WindowServer/WSEventLoop.h>
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#include <WindowServer/WSWindowManager.h>
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#include <stdio.h>
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#include <unistd.h>
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WSCPUMonitor::WSCPUMonitor()
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: m_thread([this] {
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monitor();
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return 0;
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})
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{
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m_thread.start();
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}
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void WSCPUMonitor::monitor()
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{
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for (;;) {
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static unsigned last_busy;
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static unsigned last_idle;
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unsigned busy;
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unsigned idle;
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get_cpu_usage(busy, idle);
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unsigned busy_diff = busy - last_busy;
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unsigned idle_diff = idle - last_idle;
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last_busy = busy;
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last_idle = idle;
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float cpu = (float)busy_diff / (float)(busy_diff + idle_diff);
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m_cpu_history.enqueue(cpu);
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m_dirty = true;
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sleep(1);
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}
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}
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void WSCPUMonitor::get_cpu_usage(unsigned& busy, unsigned& idle)
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{
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busy = 0;
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idle = 0;
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auto all_processes = CProcessStatisticsReader::get_all();
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for (auto& it : all_processes) {
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for (auto& jt : it.value.threads) {
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if (it.value.pid == 0)
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idle += jt.times_scheduled;
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else
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busy += jt.times_scheduled;
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}
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}
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}
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void WSCPUMonitor::paint(Painter& painter, const Rect& rect)
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{
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painter.fill_rect(rect, Color::Black);
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int i = m_cpu_history.capacity() - m_cpu_history.size();
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for (auto cpu_usage : m_cpu_history) {
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painter.draw_line(
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{ rect.x() + i, rect.bottom() },
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{ rect.x() + i, (int)(rect.y() + (rect.height() - (cpu_usage * (float)rect.height()))) },
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Color::from_rgb(0xaa6d4b));
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++i;
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}
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}
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