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serenity/Applications/SystemMonitor/ProcessModel.cpp
Tom de6a4d49b8 SystemMonitor: Beef up CPU and memory graphs 
We now show the total CPU usage as well as the kernel portion.
For the memory graphs we show the amount of committed memory,
actually allocated memory, and the portion of the kernel heap.
2021-01-05 10:59:00 +01:00

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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "ProcessModel.h"
#include "GraphWidget.h"
#include <AK/JsonArray.h>
#include <AK/JsonObject.h>
#include <AK/JsonValue.h>
#include <AK/SharedBuffer.h>
#include <LibCore/File.h>
#include <LibCore/ProcessStatisticsReader.h>
#include <LibGUI/FileIconProvider.h>
#include <fcntl.h>
#include <stdio.h>
static ProcessModel* s_the;
ProcessModel& ProcessModel::the()
{
ASSERT(s_the);
return *s_the;
}
ProcessModel::ProcessModel()
{
ASSERT(!s_the);
s_the = this;
m_generic_process_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/gear.png");
m_high_priority_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/highpriority.png");
m_low_priority_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/lowpriority.png");
m_normal_priority_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/normalpriority.png");
auto file = Core::File::construct("/proc/cpuinfo");
if (file->open(Core::IODevice::ReadOnly)) {
auto json = JsonValue::from_string({ file->read_all() });
auto cpuinfo_array = json.value().as_array();
cpuinfo_array.for_each([&](auto& value) {
auto& cpu_object = value.as_object();
auto cpu_id = cpu_object.get("processor").as_u32();
m_cpus.append(make<CpuInfo>(cpu_id));
});
}
if (m_cpus.is_empty())
m_cpus.append(make<CpuInfo>(0));
}
ProcessModel::~ProcessModel()
{
}
int ProcessModel::row_count(const GUI::ModelIndex&) const
{
return m_pids.size();
}
int ProcessModel::column_count(const GUI::ModelIndex&) const
{
return Column::__Count;
}
String ProcessModel::column_name(int column) const
{
switch (column) {
case Column::Icon:
return "";
case Column::PID:
return "PID";
case Column::TID:
return "TID";
case Column::PPID:
return "PPID";
case Column::PGID:
return "PGID";
case Column::SID:
return "SID";
case Column::State:
return "State";
case Column::User:
return "User";
case Column::Priority:
return "Pr";
case Column::EffectivePriority:
return "EPr";
case Column::Virtual:
return "Virtual";
case Column::Physical:
return "Physical";
case Column::DirtyPrivate:
return "DirtyP";
case Column::CleanInode:
return "CleanI";
case Column::PurgeableVolatile:
return "Purg:V";
case Column::PurgeableNonvolatile:
return "Purg:N";
case Column::CPU:
return "CPU";
case Column::Processor:
return "Processor";
case Column::Name:
return "Name";
case Column::Syscalls:
return "Syscalls";
case Column::InodeFaults:
return "F:Inode";
case Column::ZeroFaults:
return "F:Zero";
case Column::CowFaults:
return "F:CoW";
case Column::IPv4SocketReadBytes:
return "IPv4 In";
case Column::IPv4SocketWriteBytes:
return "IPv4 Out";
case Column::UnixSocketReadBytes:
return "Unix In";
case Column::UnixSocketWriteBytes:
return "Unix Out";
case Column::FileReadBytes:
return "File In";
case Column::FileWriteBytes:
return "File Out";
case Column::Pledge:
return "Pledge";
case Column::Veil:
return "Veil";
default:
ASSERT_NOT_REACHED();
}
}
static String pretty_byte_size(size_t size)
{
return String::formatted("{}K", size / 1024);
}
GUI::Variant ProcessModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
{
ASSERT(is_valid(index));
if (role == GUI::ModelRole::TextAlignment) {
switch (index.column()) {
case Column::Icon:
case Column::Name:
case Column::State:
case Column::User:
case Column::Pledge:
case Column::Veil:
return Gfx::TextAlignment::CenterLeft;
case Column::PID:
case Column::TID:
case Column::PPID:
case Column::PGID:
case Column::SID:
case Column::Priority:
case Column::EffectivePriority:
case Column::Virtual:
case Column::Physical:
case Column::DirtyPrivate:
case Column::CleanInode:
case Column::PurgeableVolatile:
case Column::PurgeableNonvolatile:
case Column::CPU:
case Column::Processor:
case Column::Syscalls:
case Column::InodeFaults:
case Column::ZeroFaults:
case Column::CowFaults:
case Column::FileReadBytes:
case Column::FileWriteBytes:
case Column::UnixSocketReadBytes:
case Column::UnixSocketWriteBytes:
case Column::IPv4SocketReadBytes:
case Column::IPv4SocketWriteBytes:
return Gfx::TextAlignment::CenterRight;
default:
ASSERT_NOT_REACHED();
}
}
auto it = m_threads.find(m_pids[index.row()]);
auto& thread = *(*it).value;
if (role == GUI::ModelRole::Sort) {
switch (index.column()) {
case Column::Icon:
return 0;
case Column::PID:
return thread.current_state.pid;
case Column::TID:
return thread.current_state.tid;
case Column::PPID:
return thread.current_state.ppid;
case Column::PGID:
return thread.current_state.pgid;
case Column::SID:
return thread.current_state.sid;
case Column::State:
return thread.current_state.state;
case Column::User:
return thread.current_state.user;
case Column::Priority:
return thread.current_state.priority;
case Column::EffectivePriority:
return thread.current_state.effective_priority;
case Column::Virtual:
return (int)thread.current_state.amount_virtual;
case Column::Physical:
return (int)thread.current_state.amount_resident;
case Column::DirtyPrivate:
return (int)thread.current_state.amount_dirty_private;
case Column::CleanInode:
return (int)thread.current_state.amount_clean_inode;
case Column::PurgeableVolatile:
return (int)thread.current_state.amount_purgeable_volatile;
case Column::PurgeableNonvolatile:
return (int)thread.current_state.amount_purgeable_nonvolatile;
case Column::CPU:
return thread.current_state.cpu_percent;
case Column::Processor:
return thread.current_state.cpu;
case Column::Name:
return thread.current_state.name;
case Column::Syscalls:
return thread.current_state.syscall_count;
case Column::InodeFaults:
return thread.current_state.inode_faults;
case Column::ZeroFaults:
return thread.current_state.zero_faults;
case Column::CowFaults:
return thread.current_state.cow_faults;
case Column::IPv4SocketReadBytes:
return thread.current_state.ipv4_socket_read_bytes;
case Column::IPv4SocketWriteBytes:
return thread.current_state.ipv4_socket_write_bytes;
case Column::UnixSocketReadBytes:
return thread.current_state.unix_socket_read_bytes;
case Column::UnixSocketWriteBytes:
return thread.current_state.unix_socket_write_bytes;
case Column::FileReadBytes:
return thread.current_state.file_read_bytes;
case Column::FileWriteBytes:
return thread.current_state.file_write_bytes;
case Column::Pledge:
return thread.current_state.pledge;
case Column::Veil:
return thread.current_state.veil;
}
ASSERT_NOT_REACHED();
return {};
}
if (role == GUI::ModelRole::Display) {
switch (index.column()) {
case Column::Icon: {
auto icon = GUI::FileIconProvider::icon_for_executable(thread.current_state.executable);
if (auto* bitmap = icon.bitmap_for_size(16))
return *bitmap;
return *m_generic_process_icon;
}
case Column::PID:
return thread.current_state.pid;
case Column::TID:
return thread.current_state.tid;
case Column::PPID:
return thread.current_state.ppid;
case Column::PGID:
return thread.current_state.pgid;
case Column::SID:
return thread.current_state.sid;
case Column::State:
return thread.current_state.state;
case Column::User:
return thread.current_state.user;
case Column::Priority:
return thread.current_state.priority;
case Column::EffectivePriority:
return thread.current_state.effective_priority;
case Column::Virtual:
return pretty_byte_size(thread.current_state.amount_virtual);
case Column::Physical:
return pretty_byte_size(thread.current_state.amount_resident);
case Column::DirtyPrivate:
return pretty_byte_size(thread.current_state.amount_dirty_private);
case Column::CleanInode:
return pretty_byte_size(thread.current_state.amount_clean_inode);
case Column::PurgeableVolatile:
return pretty_byte_size(thread.current_state.amount_purgeable_volatile);
case Column::PurgeableNonvolatile:
return pretty_byte_size(thread.current_state.amount_purgeable_nonvolatile);
case Column::CPU:
return thread.current_state.cpu_percent;
case Column::Processor:
return thread.current_state.cpu;
case Column::Name:
return thread.current_state.name;
case Column::Syscalls:
return thread.current_state.syscall_count;
case Column::InodeFaults:
return thread.current_state.inode_faults;
case Column::ZeroFaults:
return thread.current_state.zero_faults;
case Column::CowFaults:
return thread.current_state.cow_faults;
case Column::IPv4SocketReadBytes:
return thread.current_state.ipv4_socket_read_bytes;
case Column::IPv4SocketWriteBytes:
return thread.current_state.ipv4_socket_write_bytes;
case Column::UnixSocketReadBytes:
return thread.current_state.unix_socket_read_bytes;
case Column::UnixSocketWriteBytes:
return thread.current_state.unix_socket_write_bytes;
case Column::FileReadBytes:
return thread.current_state.file_read_bytes;
case Column::FileWriteBytes:
return thread.current_state.file_write_bytes;
case Column::Pledge:
return thread.current_state.pledge;
case Column::Veil:
return thread.current_state.veil;
}
}
return {};
}
void ProcessModel::update()
{
auto previous_pid_count = m_pids.size();
auto all_processes = Core::ProcessStatisticsReader::get_all(m_proc_all);
u64 last_sum_ticks_scheduled = 0, last_sum_ticks_scheduled_kernel = 0;
for (auto& it : m_threads) {
auto& current_state = it.value->current_state;
last_sum_ticks_scheduled += current_state.ticks_user + current_state.ticks_kernel;
last_sum_ticks_scheduled_kernel += current_state.ticks_kernel;
}
HashTable<PidAndTid> live_pids;
u64 sum_ticks_scheduled = 0, sum_ticks_scheduled_kernel = 0;
if (all_processes.has_value()) {
for (auto& it : all_processes.value()) {
for (auto& thread : it.value.threads) {
ThreadState state;
state.pid = it.value.pid;
state.user = it.value.username;
state.pledge = it.value.pledge;
state.veil = it.value.veil;
state.syscall_count = thread.syscall_count;
state.inode_faults = thread.inode_faults;
state.zero_faults = thread.zero_faults;
state.cow_faults = thread.cow_faults;
state.unix_socket_read_bytes = thread.unix_socket_read_bytes;
state.unix_socket_write_bytes = thread.unix_socket_write_bytes;
state.ipv4_socket_read_bytes = thread.ipv4_socket_read_bytes;
state.ipv4_socket_write_bytes = thread.ipv4_socket_write_bytes;
state.file_read_bytes = thread.file_read_bytes;
state.file_write_bytes = thread.file_write_bytes;
state.amount_virtual = it.value.amount_virtual;
state.amount_resident = it.value.amount_resident;
state.amount_dirty_private = it.value.amount_dirty_private;
state.amount_clean_inode = it.value.amount_clean_inode;
state.amount_purgeable_volatile = it.value.amount_purgeable_volatile;
state.amount_purgeable_nonvolatile = it.value.amount_purgeable_nonvolatile;
state.name = thread.name;
state.executable = it.value.executable;
state.ppid = it.value.ppid;
state.tid = thread.tid;
state.pgid = it.value.pgid;
state.sid = it.value.sid;
state.times_scheduled = thread.times_scheduled;
state.ticks_user = thread.ticks_user;
state.ticks_kernel = thread.ticks_kernel;
state.cpu = thread.cpu;
state.cpu_percent = 0;
state.priority = thread.priority;
state.effective_priority = thread.effective_priority;
state.state = thread.state;
sum_ticks_scheduled += thread.ticks_user + thread.ticks_kernel;
sum_ticks_scheduled_kernel += thread.ticks_kernel;
{
auto pit = m_threads.find({ it.value.pid, thread.tid });
if (pit == m_threads.end())
m_threads.set({ it.value.pid, thread.tid }, make<Thread>());
}
auto pit = m_threads.find({ it.value.pid, thread.tid });
ASSERT(pit != m_threads.end());
(*pit).value->previous_state = (*pit).value->current_state;
(*pit).value->current_state = state;
live_pids.set({ it.value.pid, thread.tid });
}
}
}
m_pids.clear();
for (auto& c : m_cpus) {
c.total_cpu_percent = 0.0;
c.total_cpu_percent_kernel = 0.0;
}
Vector<PidAndTid, 16> pids_to_remove;
for (auto& it : m_threads) {
if (!live_pids.contains(it.key)) {
pids_to_remove.append(it.key);
continue;
}
auto& process = *it.value;
u32 ticks_scheduled_diff = (process.current_state.ticks_user + process.current_state.ticks_kernel)
- (process.previous_state.ticks_user + process.previous_state.ticks_kernel);
u32 ticks_scheduled_diff_kernel = process.current_state.ticks_kernel - process.previous_state.ticks_kernel;
process.current_state.cpu_percent = ((float)ticks_scheduled_diff * 100) / (float)(sum_ticks_scheduled - last_sum_ticks_scheduled);
process.current_state.cpu_percent_kernel = ((float)ticks_scheduled_diff_kernel * 100) / (float)(sum_ticks_scheduled - last_sum_ticks_scheduled);
if (it.key.pid != 0) {
auto& cpu_info = m_cpus[process.current_state.cpu];
cpu_info.total_cpu_percent += process.current_state.cpu_percent;
cpu_info.total_cpu_percent_kernel += process.current_state.cpu_percent_kernel;
m_pids.append(it.key);
}
}
for (auto pid : pids_to_remove)
m_threads.remove(pid);
if (on_cpu_info_change)
on_cpu_info_change(m_cpus);
// FIXME: This is a rather hackish way of invalidating indexes.
// It would be good if GUI::Model had a way to orchestrate removal/insertion while preserving indexes.
did_update(previous_pid_count == m_pids.size() ? GUI::Model::UpdateFlag::DontInvalidateIndexes : GUI::Model::UpdateFlag::InvalidateAllIndexes);
}
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