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serenity/Applications/SystemMonitor/ProcessModel.cpp
Andreas Kling 8e4751a963 LibGUI: Add a way for models to update without invalidating indexes 
This is really just a workaround to keep SystemMonitor's process table
working right wrt selection retention during resorts (while also doing
full index invalidation on things like ProfileViewer inversion.)

It's starting to feel like the model abstraction is not super great
and we'll need a better approach if we want to actually build some more
dynamic functionality into our views.
2020-04-12 12:03:33 +02:00

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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/ProcessStatisticsReader.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/gear16.png");
m_high_priority_icon = Gfx::Bitmap::load_from_file("/res/icons/highpriority16.png");
m_low_priority_icon = Gfx::Bitmap::load_from_file("/res/icons/lowpriority16.png");
m_normal_priority_icon = Gfx::Bitmap::load_from_file("/res/icons/normalpriority16.png");
}
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::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::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();
}
}
GUI::Model::ColumnMetadata ProcessModel::column_metadata(int column) const
{
switch (column) {
case Column::Icon:
return { 16, Gfx::TextAlignment::CenterLeft };
case Column::PID:
return { 32, Gfx::TextAlignment::CenterRight };
case Column::TID:
return { 32, Gfx::TextAlignment::CenterRight };
case Column::State:
return { 75, Gfx::TextAlignment::CenterLeft };
case Column::Priority:
return { 16, Gfx::TextAlignment::CenterRight };
case Column::EffectivePriority:
return { 16, Gfx::TextAlignment::CenterRight };
case Column::User:
return { 50, Gfx::TextAlignment::CenterLeft };
case Column::Virtual:
return { 65, Gfx::TextAlignment::CenterRight };
case Column::Physical:
return { 65, Gfx::TextAlignment::CenterRight };
case Column::DirtyPrivate:
return { 65, Gfx::TextAlignment::CenterRight };
case Column::CleanInode:
return { 65, Gfx::TextAlignment::CenterRight };
case Column::PurgeableVolatile:
return { 65, Gfx::TextAlignment::CenterRight };
case Column::PurgeableNonvolatile:
return { 65, Gfx::TextAlignment::CenterRight };
case Column::CPU:
return { 32, Gfx::TextAlignment::CenterRight };
case Column::Name:
return { 140, Gfx::TextAlignment::CenterLeft };
case Column::Syscalls:
return { 60, Gfx::TextAlignment::CenterRight };
case Column::InodeFaults:
return { 60, Gfx::TextAlignment::CenterRight };
case Column::ZeroFaults:
return { 60, Gfx::TextAlignment::CenterRight };
case Column::CowFaults:
return { 60, Gfx::TextAlignment::CenterRight };
case Column::FileReadBytes:
return { 60, Gfx::TextAlignment::CenterRight };
case Column::FileWriteBytes:
return { 60, Gfx::TextAlignment::CenterRight };
case Column::UnixSocketReadBytes:
return { 60, Gfx::TextAlignment::CenterRight };
case Column::UnixSocketWriteBytes:
return { 60, Gfx::TextAlignment::CenterRight };
case Column::IPv4SocketReadBytes:
return { 60, Gfx::TextAlignment::CenterRight };
case Column::IPv4SocketWriteBytes:
return { 60, Gfx::TextAlignment::CenterRight };
case Column::Pledge:
return { 60, Gfx::TextAlignment::CenterLeft };
case Column::Veil:
return { 60, Gfx::TextAlignment::CenterLeft };
default:
ASSERT_NOT_REACHED();
}
}
static String pretty_byte_size(size_t size)
{
return String::format("%uK", size / 1024);
}
GUI::Variant ProcessModel::data(const GUI::ModelIndex& index, Role role) const
{
ASSERT(is_valid(index));
auto it = m_threads.find(m_pids[index.row()]);
auto& thread = *(*it).value;
if (role == Role::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::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::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 == Role::Display) {
switch (index.column()) {
case Column::Icon:
if (thread.current_state.icon_id != -1) {
auto icon_buffer = SharedBuffer::create_from_shbuf_id(thread.current_state.icon_id);
if (icon_buffer) {
auto icon_bitmap = Gfx::Bitmap::create_with_shared_buffer(Gfx::BitmapFormat::RGBA32, *icon_buffer, { 16, 16 });
if (icon_bitmap)
return *icon_bitmap;
}
}
return *m_generic_process_icon;
case Column::PID:
return thread.current_state.pid;
case Column::TID:
return thread.current_state.tid;
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::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 all_processes = Core::ProcessStatisticsReader::get_all();
unsigned last_sum_times_scheduled = 0;
for (auto& it : m_threads)
last_sum_times_scheduled += it.value->current_state.times_scheduled;
HashTable<PidAndTid> live_pids;
unsigned sum_times_scheduled = 0;
for (auto& it : all_processes) {
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.icon_id = it.value.icon_id;
state.name = thread.name;
state.tid = thread.tid;
state.times_scheduled = thread.times_scheduled;
state.priority = thread.priority;
state.effective_priority = thread.effective_priority;
state.state = thread.state;
sum_times_scheduled += thread.times_scheduled;
{
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();
float total_cpu_percent = 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 times_scheduled_diff = process.current_state.times_scheduled - process.previous_state.times_scheduled;
process.current_state.cpu_percent = ((float)times_scheduled_diff * 100) / (float)(sum_times_scheduled - last_sum_times_scheduled);
if (it.key.pid != 0) {
total_cpu_percent += process.current_state.cpu_percent;
m_pids.append(it.key);
}
}
for (auto pid : pids_to_remove)
m_threads.remove(pid);
if (on_new_cpu_data_point)
on_new_cpu_data_point(total_cpu_percent);
did_update(GUI::Model::UpdateFlag::DontInvalidateIndexes);
}
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