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Profiler: Add a new "Samples" view to the main UI

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You can now view the individual samples in a profile one by one with
the new "Samples" view. The "old" main view moves into a "Call Tree"
tab (but it remains the default view.)

When you select a sample in the samples view, we show you the full
symbolicated backtrace in a separate view on the right hand side. :^)
This commit is contained in:
Andreas Kling 2021-02-27 18:33:30 +01:00
parent 2c1f71055f
commit 1fb1279cfd
8 changed files with 369 additions and 11 deletions
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25
Userland/DevTools/Profiler/Profile.cpp
View file

@ -27,6 +27,7 @@
#include "Profile.h"
#include "DisassemblyModel.h"
#include "ProfileModel.h"
#include "SamplesModel.h"
#include <AK/HashTable.h>
#include <AK/LexicalPath.h>
#include <AK/MappedFile.h>
@ -55,6 +56,7 @@ Profile::Profile(String executable_path, Vector<Event> events, NonnullOwnPtr<Lib
m_last_timestamp = m_events.last().timestamp;
m_model = ProfileModel::create(*this);
m_samples_model = SamplesModel::create(*this);
for (auto& event : m_events) {
m_deepest_stack_depth = max((u32)event.frames.size(), m_deepest_stack_depth);
@ -72,6 +74,11 @@ GUI::Model& Profile::model()
return *m_model;
}
GUI::Model& Profile::samples_model()
{
return *m_samples_model;
}
void Profile::rebuild_tree()
{
u32 filtered_event_count = 0;
@ -91,18 +98,14 @@ void Profile::rebuild_tree()
HashTable<FlatPtr> live_allocations;
for (auto& event : m_events) {
if (has_timestamp_filter_range()) {
auto timestamp = event.timestamp;
if (timestamp < m_timestamp_filter_range_start || timestamp > m_timestamp_filter_range_end)
continue;
}
for_each_event_in_filter_range([&](auto& event) {
if (event.type == "malloc")
live_allocations.set(event.ptr);
else if (event.type == "free")
live_allocations.remove(event.ptr);
}
});
Optional<size_t> first_filtered_event_index;
for (size_t event_index = 0; event_index < m_events.size(); ++event_index) {
auto& event = m_events.at(event_index);
@ -112,6 +115,9 @@ void Profile::rebuild_tree()
continue;
}
if (!first_filtered_event_index.has_value())
first_filtered_event_index = event_index;
if (event.type == "malloc" && !live_allocations.contains(event.ptr))
continue;
@ -197,6 +203,7 @@ void Profile::rebuild_tree()
sort_profile_nodes(roots);
m_filtered_event_count = filtered_event_count;
m_first_filtered_event_index = first_filtered_event_index.value_or(0);
m_roots = move(roots);
m_model->update();
}
@ -307,6 +314,7 @@ void Profile::set_timestamp_filter_range(u64 start, u64 end)
m_timestamp_filter_range_end = max(start, end);
rebuild_tree();
m_samples_model->update();
}
void Profile::clear_timestamp_filter_range()
@ -315,6 +323,7 @@ void Profile::clear_timestamp_filter_range()
return;
m_has_timestamp_filter_range = false;
rebuild_tree();
m_samples_model->update();
}
void Profile::set_inverted(bool inverted)