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#include "ProcessModel.h"
#include "GraphWidget.h"
#include <LibCore/CFile.h>
#include <fcntl.h>
#include <stdio.h>
#include <pwd.h>
ProcessModel::ProcessModel(GraphWidget& graph)
: m_graph(graph)
{
setpwent();
while (auto* passwd = getpwent())
m_usernames.set(passwd->pw_uid, passwd->pw_name);
endpwent();
m_generic_process_icon = GraphicsBitmap::load_from_file("/res/icons/gear16.png");
m_high_priority_icon = GraphicsBitmap::load_from_file("/res/icons/highpriority16.png");
m_low_priority_icon = GraphicsBitmap::load_from_file("/res/icons/lowpriority16.png");
m_normal_priority_icon = GraphicsBitmap::load_from_file("/res/icons/normalpriority16.png");
}
ProcessModel::~ProcessModel()
{
}
int ProcessModel::row_count(const GModelIndex&) const
{
return m_pids.size();
}
int ProcessModel::column_count(const GModelIndex&) const
{
return Column::__Count;
}
String ProcessModel::column_name(int column) const
{
switch (column) {
case Column::Icon: return "";
case Column::PID: return "PID";
case Column::State: return "State";
case Column::User: return "User";
case Column::Priority: return "Pr";
case Column::Linear: return "Linear";
case Column::Physical: return "Physical";
case Column::CPU: return "CPU";
case Column::Name: return "Name";
case Column::Syscalls: return "Syscalls";
default: ASSERT_NOT_REACHED();
}
}
GModel::ColumnMetadata ProcessModel::column_metadata(int column) const
{
switch (column) {
case Column::Icon: return { 16, TextAlignment::CenterLeft };
case Column::PID: return { 32, TextAlignment::CenterRight };
case Column::State: return { 75, TextAlignment::CenterLeft };
case Column::Priority: return { 16, TextAlignment::CenterLeft };
case Column::User: return { 50, TextAlignment::CenterLeft };
case Column::Linear: return { 65, TextAlignment::CenterRight };
case Column::Physical: return { 65, TextAlignment::CenterRight };
case Column::CPU: return { 32, TextAlignment::CenterRight };
case Column::Name: return { 140, TextAlignment::CenterLeft };
case Column::Syscalls: return { 60, TextAlignment::CenterRight };
default: ASSERT_NOT_REACHED();
}
}
static String pretty_byte_size(size_t size)
{
return String::format("%uK", size / 1024);
}
GVariant ProcessModel::data(const GModelIndex& index, Role role) const
{
ASSERT(is_valid(index));
auto it = m_processes.find(m_pids[index.row()]);
auto& process = *(*it).value;
if (role == Role::Sort) {
switch (index.column()) {
case Column::Icon: return 0;
case Column::PID: return process.current_state.pid;
case Column::State: return process.current_state.state;
case Column::User: return process.current_state.user;
case Column::Priority:
if (process.current_state.priority == "Idle")
return 0;
if (process.current_state.priority == "Low")
return 1;
if (process.current_state.priority == "Normal")
return 2;
if (process.current_state.priority == "High")
return 3;
ASSERT_NOT_REACHED();
return 3;
case Column::Linear: return (int)process.current_state.linear;
case Column::Physical: return (int)process.current_state.physical;
case Column::CPU: return process.current_state.cpu_percent;
case Column::Name: return process.current_state.name;
// FIXME: GVariant with unsigned?
case Column::Syscalls: return (int)process.current_state.syscalls;
}
ASSERT_NOT_REACHED();
return { };
}
if (role == Role::Display) {
switch (index.column()) {
case Column::Icon: return *m_generic_process_icon;
case Column::PID: return process.current_state.pid;
case Column::State: return process.current_state.state;
case Column::User: return process.current_state.user;
case Column::Priority:
if (process.current_state.priority == "Idle")
return String::empty();
if (process.current_state.priority == "High")
return *m_high_priority_icon;
if (process.current_state.priority == "Low")
return *m_low_priority_icon;
if (process.current_state.priority == "Normal")
return *m_normal_priority_icon;
return process.current_state.priority;
case Column::Linear: return pretty_byte_size(process.current_state.linear);
case Column::Physical: return pretty_byte_size(process.current_state.physical);
case Column::CPU: return process.current_state.cpu_percent;
case Column::Name: return process.current_state.name;
// FIXME: It's weird that GVariant doesn't support unsigned ints. Should it?
case Column::Syscalls: return (int)process.current_state.syscalls;
}
}
return { };
}
void ProcessModel::update()
{
CFile file("/proc/all");
if (!file.open(CIODevice::ReadOnly)) {
fprintf(stderr, "ProcessManager: Failed to open /proc/all: %s\n", file.error_string());
exit(1);
return;
}
unsigned last_sum_nsched = 0;
for (auto& it : m_processes)
last_sum_nsched += it.value->current_state.nsched;
HashTable<pid_t> live_pids;
unsigned sum_nsched = 0;
for (;;) {
auto line = file.read_line(1024);
if (line.is_empty())
break;
auto chomped = String((const char*)line.pointer(), line.size() - 1, Chomp);
auto parts = chomped.split_view(',');
if (parts.size() < 18)
break;
bool ok;
pid_t pid = parts[0].to_uint(ok);
ASSERT(ok);
unsigned nsched = parts[1].to_uint(ok);
ASSERT(ok);
ProcessState state;
state.pid = pid;
state.nsched = nsched;
unsigned uid = parts[5].to_uint(ok);
ASSERT(ok);
{
auto it = m_usernames.find((uid_t)uid);
if (it != m_usernames.end())
state.user = String::format("%s", (*it).value.characters());
else
state.user = String::format("%u", uid);
}
state.priority = parts[16];
state.syscalls = parts[17].to_uint(ok);
ASSERT(ok);
state.state = parts[7];
state.name = parts[11];
state.linear = parts[12].to_uint(ok);
ASSERT(ok);
state.physical = parts[13].to_uint(ok);
ASSERT(ok);
sum_nsched += nsched;
{
auto it = m_processes.find(pid);
if (it == m_processes.end())
m_processes.set(pid, make<Process>());
}
auto it = m_processes.find(pid);
ASSERT(it != m_processes.end());
(*it).value->previous_state = (*it).value->current_state;
(*it).value->current_state = state;
live_pids.set(pid);
}
m_pids.clear();
float total_cpu_percent = 0;
Vector<pid_t, 16> pids_to_remove;
for (auto& it : m_processes) {
if (!live_pids.contains(it.key)) {
pids_to_remove.append(it.key);
continue;
}
auto& process = *it.value;
dword nsched_diff = process.current_state.nsched - process.previous_state.nsched;
process.current_state.cpu_percent = ((float)nsched_diff * 100) / (float)(sum_nsched - last_sum_nsched);
if (it.key != 0) {
total_cpu_percent += process.current_state.cpu_percent;
m_pids.append(it.key);
}
}
for (auto pid : pids_to_remove)
m_processes.remove(pid);
m_graph.add_value(total_cpu_percent);
did_update();
}
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