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https://github.com/LadybirdBrowser/ladybird.git
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WindowServer: Move the CPU monitor thingy to its own class.
This commit is contained in:
parent
f1b58d8d8c
commit
c2093ad994
Notes:
sideshowbarker
2024-07-19 14:43:29 +09:00
Author: https://github.com/awesomekling Commit: https://github.com/SerenityOS/serenity/commit/c2093ad9942
@ -1,7 +1,7 @@
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#pragma once
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#include "Assertions.h"
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#include "Types.h"
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#include <AK/Assertions.h>
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#include <AK/Types.h>
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namespace AK {
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@ -19,15 +19,6 @@ public:
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int capacity() const { return Capacity; }
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void dump() const
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{
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kprintf("CircularQueue<%zu>:\n", Capacity);
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kprintf(" size: %zu\n", m_size);
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for (int i = 0; i < Capacity; ++i) {
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kprintf(" [%zu] %d %c\n", i, m_elements[i], i == m_head ? '*' : ' ');
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}
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}
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void enqueue(const T& t)
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{
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m_elements[(m_head + m_size) % Capacity] = t;
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@ -24,6 +24,7 @@ WINDOWSERVER_OBJS = \
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WSCursor.o \
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WSWindowFrame.o \
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WSButton.o \
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WSCPUMonitor.o \
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main.o
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APP = WindowServer
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74
Servers/WindowServer/WSCPUMonitor.cpp
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74
Servers/WindowServer/WSCPUMonitor.cpp
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@ -0,0 +1,74 @@
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#include <WindowServer/WSCPUMonitor.h>
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#include <WindowServer/WSMessageLoop.h>
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#include <WindowServer/WSWindowManager.h>
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#include <unistd.h>
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#include <stdio.h>
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WSCPUMonitor::WSCPUMonitor()
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{
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create_thread([] (void* context) -> int {
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auto& monitor = *(WSCPUMonitor*)context;
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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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monitor.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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monitor.m_cpu_history.enqueue(cpu);
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monitor.m_dirty = true;
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sleep(1);
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}
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}, this);
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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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FILE* fp = fopen("/proc/all", "r");
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if (!fp) {
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perror("failed to open /proc/all");
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ASSERT_NOT_REACHED();
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}
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for (;;) {
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char buf[BUFSIZ];
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char* ptr = fgets(buf, sizeof(buf), fp);
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if (!ptr)
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break;
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auto parts = String(buf, Chomp).split(',');
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if (parts.size() < 17)
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break;
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bool ok;
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pid_t pid = parts[0].to_uint(ok);
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ASSERT(ok);
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unsigned nsched = parts[1].to_uint(ok);
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ASSERT(ok);
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if (pid == 0)
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idle += nsched;
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else
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busy += nsched;
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}
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int rc = fclose(fp);
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ASSERT(rc == 0);
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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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);
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++i;
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}
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}
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22
Servers/WindowServer/WSCPUMonitor.h
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22
Servers/WindowServer/WSCPUMonitor.h
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@ -0,0 +1,22 @@
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#pragma once
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#include <AK/CircularQueue.h>
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class Painter;
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class Rect;
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class WSCPUMonitor {
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public:
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WSCPUMonitor();
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bool is_dirty() const { return m_dirty; }
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void set_dirty(bool dirty) { m_dirty = dirty; }
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int capacity() const { return m_cpu_history.capacity(); }
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void paint(Painter&, const Rect&);
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private:
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void get_cpu_usage(unsigned& busy, unsigned& idle);
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CircularQueue<float, 30> m_cpu_history;
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bool m_dirty { false };
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};
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@ -22,8 +22,6 @@
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//#define DEBUG_COUNTERS
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//#define RESIZE_DEBUG
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static void get_cpu_usage(unsigned& busy, unsigned& idle);
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static WSWindowManager* s_the;
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WSWindowManager& WSWindowManager::the()
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@ -143,34 +141,13 @@ WSWindowManager::WSWindowManager()
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// NOTE: This ensures that the system menu has the correct dimensions.
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set_current_menubar(nullptr);
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create_thread([] (void* context) -> int {
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auto& wm = *(WSWindowManager*)context;
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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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wm.m_cpu_history.enqueue(cpu);
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sleep(1);
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}
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}, this);
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WSMessageLoop::the().start_timer(300, [this] {
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static time_t last_update_time;
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static int last_cpu_history_size = 0;
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static int last_cpu_history_head_index = 0;
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time_t now = time(nullptr);
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if (now != last_update_time || m_cpu_history.size() != last_cpu_history_size || m_cpu_history.head_index() != last_cpu_history_head_index) {
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if (now != last_update_time || m_cpu_monitor.is_dirty()) {
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tick_clock();
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last_update_time = now;
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last_cpu_history_head_index = m_cpu_history.head_index();
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last_cpu_history_size = m_cpu_history.size();
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m_cpu_monitor.set_dirty(false);
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}
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});
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@ -202,39 +179,6 @@ const Font& WSWindowManager::app_menu_font() const
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return Font::default_bold_font();
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}
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void 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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FILE* fp = fopen("/proc/all", "r");
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if (!fp) {
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perror("failed to open /proc/all");
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ASSERT_NOT_REACHED();
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}
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for (;;) {
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char buf[BUFSIZ];
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char* ptr = fgets(buf, sizeof(buf), fp);
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if (!ptr)
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break;
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auto parts = String(buf, Chomp).split(',');
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if (parts.size() < 17)
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break;
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bool ok;
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pid_t pid = parts[0].to_uint(ok);
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ASSERT(ok);
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unsigned nsched = parts[1].to_uint(ok);
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ASSERT(ok);
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if (pid == 0)
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idle += nsched;
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else
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busy += nsched;
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}
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int rc = fclose(fp);
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ASSERT(rc == 0);
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}
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void WSWindowManager::tick_clock()
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{
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invalidate(menubar_rect());
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@ -926,17 +870,8 @@ void WSWindowManager::draw_menubar()
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m_back_painter->draw_text(time_rect, time_text, font(), TextAlignment::CenterRight, Color::Black);
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Rect cpu_rect { time_rect.right() - font().width(time_text) - (int)m_cpu_history.capacity() - 10, time_rect.y() + 1, (int)m_cpu_history.capacity(), time_rect.height() - 2 };
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m_back_painter->fill_rect(cpu_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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m_back_painter->draw_line(
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{ cpu_rect.x() + i, cpu_rect.bottom() },
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{ cpu_rect.x() + i, (int)(cpu_rect.y() + (cpu_rect.height() - (cpu_usage * (float)cpu_rect.height()))) },
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Color::from_rgb(0xaa6d4b)
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);
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++i;
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}
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Rect cpu_rect { time_rect.right() - font().width(time_text) - m_cpu_monitor.capacity() - 10, time_rect.y() + 1, m_cpu_monitor.capacity(), time_rect.height() - 2 };
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m_cpu_monitor.paint(*m_back_painter, cpu_rect);
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}
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void WSWindowManager::draw_window_switcher()
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#include <WindowServer/WSWindow.h>
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#include <WindowServer/WSCursor.h>
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#include <WindowServer/WSMessage.h>
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#include <AK/CircularQueue.h>
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#include <WindowServer/WSCPUMonitor.h>
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class WSAPIClientRequest;
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class WSScreen;
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@ -216,11 +216,11 @@ private:
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WSWindowSwitcher m_switcher;
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CircularQueue<float, 30> m_cpu_history;
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String m_username;
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WeakPtr<WSButton> m_cursor_tracking_button;
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WeakPtr<WSButton> m_hovered_button;
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WSCPUMonitor m_cpu_monitor;
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};
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template<typename Callback>
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