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SystemMonitor: Remove pid-and-tid tuple concept from ProcessModel

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This was an old relic from back when thread IDs were per-process
instead of globally unique.
This commit is contained in:
Andreas Kling 2021-02-16 20:35:21 +01:00
parent 5f81babad2
commit 525f472dc5
Notes: sideshowbarker 2024-07-18 22:12:26 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/525f472dc58
2 changed files with 28 additions and 44 deletions
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52
Userland/Applications/SystemMonitor/ProcessModel.cpp
View File

@ -66,7 +66,7 @@ ProcessModel::~ProcessModel()
int ProcessModel::row_count(const GUI::ModelIndex&) const
{
return m_pids.size();
return m_tids.size();
}
int ProcessModel::column_count(const GUI::ModelIndex&) const
@ -190,7 +190,7 @@ GUI::Variant ProcessModel::data(const GUI::ModelIndex& index, GUI::ModelRole rol
}
}
auto it = m_threads.find(m_pids[index.row()]);
auto it = m_threads.find(m_tids[index.row()]);
auto& thread = *(*it).value;
if (role == GUI::ModelRole::Sort) {
@ -333,7 +333,7 @@ GUI::Variant ProcessModel::data(const GUI::ModelIndex& index, GUI::ModelRole rol
void ProcessModel::update()
{
auto previous_pid_count = m_pids.size();
auto previous_tid_count = m_tids.size();
auto all_processes = Core::ProcessStatisticsReader::get_all(m_proc_all);
u64 last_sum_ticks_scheduled = 0, last_sum_ticks_scheduled_kernel = 0;
@ -343,7 +343,7 @@ void ProcessModel::update()
last_sum_ticks_scheduled_kernel += current_state.ticks_kernel;
}
HashTable<PidAndTid> live_pids;
HashTable<int> live_tids;
u64 sum_ticks_scheduled = 0, sum_ticks_scheduled_kernel = 0;
if (all_processes.has_value()) {
for (auto& it : all_processes.value()) {
@ -386,51 +386,51 @@ void ProcessModel::update()
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 });
auto pit = m_threads.find(thread.tid);
if (pit == m_threads.end())
m_threads.set({ it.value.pid, thread.tid }, make<Thread>());
m_threads.set(thread.tid, make<Thread>());
}
auto pit = m_threads.find({ it.value.pid, thread.tid });
auto pit = m_threads.find(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 });
live_tids.set(thread.tid);
}
}
}
m_pids.clear();
m_tids.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;
Vector<int, 16> tids_to_remove;
for (auto& it : m_threads) {
if (!live_pids.contains(it.key)) {
pids_to_remove.append(it.key);
if (!live_tids.contains(it.key)) {
tids_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);
auto& thread = *it.value;
u32 ticks_scheduled_diff = (thread.current_state.ticks_user + thread.current_state.ticks_kernel)
- (thread.previous_state.ticks_user + thread.previous_state.ticks_kernel);
u32 ticks_scheduled_diff_kernel = thread.current_state.ticks_kernel - thread.previous_state.ticks_kernel;
thread.current_state.cpu_percent = ((float)ticks_scheduled_diff * 100) / (float)(sum_ticks_scheduled - last_sum_ticks_scheduled);
thread.current_state.cpu_percent_kernel = ((float)ticks_scheduled_diff_kernel * 100) / (float)(sum_ticks_scheduled - last_sum_ticks_scheduled);
if (it.value->current_state.pid != 0) {
auto& cpu_info = m_cpus[thread.current_state.cpu];
cpu_info.total_cpu_percent += thread.current_state.cpu_percent;
cpu_info.total_cpu_percent_kernel += thread.current_state.cpu_percent_kernel;
m_tids.append(it.key);
}
}
for (auto pid : pids_to_remove)
m_threads.remove(pid);
for (auto tid : tids_to_remove)
m_threads.remove(tid);
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);
did_update(previous_tid_count == m_tids.size() ? GUI::Model::UpdateFlag::DontInvalidateIndexes : GUI::Model::UpdateFlag::InvalidateAllIndexes);
}

20
Userland/Applications/SystemMonitor/ProcessModel.h
View File

@ -35,15 +35,6 @@
class GraphWidget;
struct PidAndTid {
bool operator==(const PidAndTid& other) const
{
return pid == other.pid && tid == other.tid;
}
pid_t pid;
int tid;
};
class ProcessModel final : public GUI::Model {
public:
enum Column {
@ -150,16 +141,9 @@ private:
ThreadState previous_state;
};
HashMap<PidAndTid, NonnullOwnPtr<Thread>> m_threads;
HashMap<int, NonnullOwnPtr<Thread>> m_threads;
NonnullOwnPtrVector<CpuInfo> m_cpus;
Vector<PidAndTid> m_pids;
Vector<int> m_tids;
RefPtr<Gfx::Bitmap> m_generic_process_icon;
RefPtr<Core::File> m_proc_all;
};
namespace AK {
template<>
struct Traits<PidAndTid> : public GenericTraits<PidAndTid> {
static unsigned hash(const PidAndTid& value) { return pair_int_hash(value.pid, value.tid); }
};
}