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https://github.com/RGBCube/serenity
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e11d177618
This allows for typing [8] instead of [8, 8, 8, 8] to specify the same margin on all edges, for example. The constructors follow CSS' style of specifying margins. The added constructors are: - Margins(int all): Sets the same margin on all edges. - Margins(int vertical, int horizontal): Sets the first argument to top and bottom margins, and the second argument to left and right margins. - Margins(int top, int vertical, int bottom): Sets the first argument to the top margin, the second argument to the left and right margins, and the third argument to the bottom margin.
115 lines
5 KiB
C++
115 lines
5 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "MemoryStatsWidget.h"
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#include "GraphWidget.h"
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#include <AK/JsonObject.h>
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#include <LibCore/File.h>
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#include <LibGUI/BoxLayout.h>
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#include <LibGUI/Label.h>
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#include <LibGUI/Painter.h>
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#include <LibGfx/FontDatabase.h>
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#include <LibGfx/StylePainter.h>
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#include <stdlib.h>
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static MemoryStatsWidget* s_the;
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MemoryStatsWidget* MemoryStatsWidget::the()
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{
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return s_the;
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}
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MemoryStatsWidget::MemoryStatsWidget(GraphWidget& graph)
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: m_graph(graph)
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{
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VERIFY(!s_the);
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s_the = this;
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set_fixed_height(110);
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set_layout<GUI::VerticalBoxLayout>();
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layout()->set_margins({ 8, 0, 0 });
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layout()->set_spacing(3);
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auto build_widgets_for_label = [this](const String& description) -> RefPtr<GUI::Label> {
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auto& container = add<GUI::Widget>();
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container.set_layout<GUI::HorizontalBoxLayout>();
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container.set_fixed_size(275, 12);
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auto& description_label = container.add<GUI::Label>(description);
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description_label.set_font(Gfx::FontDatabase::default_font().bold_variant());
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description_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
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auto& label = container.add<GUI::Label>();
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label.set_text_alignment(Gfx::TextAlignment::CenterRight);
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return label;
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};
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m_user_physical_pages_label = build_widgets_for_label("Physical memory:");
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m_user_physical_pages_committed_label = build_widgets_for_label("Committed memory:");
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m_supervisor_physical_pages_label = build_widgets_for_label("Supervisor physical:");
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m_kmalloc_space_label = build_widgets_for_label("Kernel heap:");
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m_kmalloc_count_label = build_widgets_for_label("Calls kmalloc:");
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m_kfree_count_label = build_widgets_for_label("Calls kfree:");
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m_kmalloc_difference_label = build_widgets_for_label("Difference:");
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refresh();
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}
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MemoryStatsWidget::~MemoryStatsWidget()
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{
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}
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static inline u64 page_count_to_kb(u64 kb)
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{
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return (kb * 4096) / 1024;
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}
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static inline u64 bytes_to_kb(u64 bytes)
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{
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return bytes / 1024;
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}
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void MemoryStatsWidget::refresh()
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{
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auto proc_memstat = Core::File::construct("/proc/memstat");
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if (!proc_memstat->open(Core::OpenMode::ReadOnly))
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VERIFY_NOT_REACHED();
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auto file_contents = proc_memstat->read_all();
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auto json_result = JsonValue::from_string(file_contents);
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VERIFY(json_result.has_value());
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auto json = json_result.value().as_object();
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[[maybe_unused]] unsigned kmalloc_eternal_allocated = json.get("kmalloc_eternal_allocated").to_u32();
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unsigned kmalloc_allocated = json.get("kmalloc_allocated").to_u32();
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unsigned kmalloc_available = json.get("kmalloc_available").to_u32();
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unsigned user_physical_allocated = json.get("user_physical_allocated").to_u64();
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unsigned user_physical_available = json.get("user_physical_available").to_u64();
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unsigned user_physical_committed = json.get("user_physical_committed").to_u64();
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unsigned user_physical_uncommitted = json.get("user_physical_uncommitted").to_u64();
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unsigned super_physical_alloc = json.get("super_physical_allocated").to_u64();
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unsigned super_physical_free = json.get("super_physical_available").to_u64();
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unsigned kmalloc_call_count = json.get("kmalloc_call_count").to_u32();
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unsigned kfree_call_count = json.get("kfree_call_count").to_u32();
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size_t kmalloc_bytes_total = kmalloc_allocated + kmalloc_available;
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size_t user_physical_pages_total = user_physical_allocated + user_physical_available;
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size_t supervisor_pages_total = super_physical_alloc + super_physical_free;
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size_t physical_pages_total = user_physical_pages_total + supervisor_pages_total;
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size_t physical_pages_in_use = user_physical_allocated + super_physical_alloc;
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size_t total_userphysical_and_swappable_pages = user_physical_allocated + user_physical_committed + user_physical_uncommitted;
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m_kmalloc_space_label->set_text(String::formatted("{}K/{}K", bytes_to_kb(kmalloc_allocated), bytes_to_kb(kmalloc_bytes_total)));
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m_user_physical_pages_label->set_text(String::formatted("{}K/{}K", page_count_to_kb(physical_pages_in_use), page_count_to_kb(physical_pages_total)));
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m_user_physical_pages_committed_label->set_text(String::formatted("{}K", page_count_to_kb(user_physical_committed)));
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m_supervisor_physical_pages_label->set_text(String::formatted("{}K/{}K", page_count_to_kb(super_physical_alloc), page_count_to_kb(supervisor_pages_total)));
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m_kmalloc_count_label->set_text(String::formatted("{}", kmalloc_call_count));
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m_kfree_count_label->set_text(String::formatted("{}", kfree_call_count));
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m_kmalloc_difference_label->set_text(String::formatted("{:+}", kmalloc_call_count - kfree_call_count));
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m_graph.set_max(page_count_to_kb(total_userphysical_and_swappable_pages) + bytes_to_kb(kmalloc_bytes_total));
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m_graph.add_value({ (int)page_count_to_kb(user_physical_committed), (int)page_count_to_kb(user_physical_allocated), (int)bytes_to_kb(kmalloc_bytes_total) });
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}
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