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CppModelManager: Use locator matcher for unused functions

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With this patch, when both cpp and lsp function filters
are available, they now run in parallel. The execution time
for getting the filter results (~110 K hits) for the
Creator codebase went goes from ~1100 ms into ~650 ms.

This patch also solves the potential issue with interference
between parallel runs of functions filter in locator and
in find unused functions.

Change-Id: I8f7f0b85d325848c04760ab76a7b9f02bcb5991e
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
This commit is contained in:
Jarek Kobus
2023-04-06 15:13:59 +02:00
parent 8f44964059
commit 6e8988c926
1 changed files with 11 additions and 18 deletions
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29
src/plugins/cppeditor/cppmodelmanager.cpp
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@@ -65,7 +65,6 @@
#include <utils/hostosinfo.h>
#include <utils/qtcassert.h>
#include <utils/qtcprocess.h>
#include <utils/runextensions.h>
#include <utils/savefile.h>
#include <utils/temporarydirectory.h>
@@ -535,8 +534,8 @@ void CppModelManager::findUnusedFunctions(const FilePath &folder)
const auto actionsSwitcher = std::make_shared<FindUnusedActionsEnabledSwitcher>();
// Step 1: Employ locator to find all functions
ILocatorFilter *const functionsFilter = CppModelManager::instance()->functionsFilter();
QTC_ASSERT(functionsFilter, return);
LocatorMatcher *matcher = new LocatorMatcher;
matcher->setTasks(LocatorMatcher::functionMatchers());
const QPointer<SearchResult> search
= SearchResultWindow::instance()->startNewSearch(Tr::tr("Find Unused Functions"),
{},
@@ -544,25 +543,22 @@ void CppModelManager::findUnusedFunctions(const FilePath &folder)
SearchResultWindow::SearchOnly,
SearchResultWindow::PreserveCaseDisabled,
"CppEditor");
matcher->setParent(search);
connect(search, &SearchResult::activated, [](const SearchResultItem &item) {
EditorManager::openEditorAtSearchResult(item);
});
SearchResultWindow::instance()->popup(IOutputPane::ModeSwitch | IOutputPane::WithFocus);
const auto locatorWatcher = new QFutureWatcher<LocatorFilterEntry>(search);
functionsFilter->prepareSearch({});
connect(search, &SearchResult::canceled, locatorWatcher, [locatorWatcher] {
locatorWatcher->cancel();
});
connect(locatorWatcher, &QFutureWatcher<LocatorFilterEntry>::finished, search,
[locatorWatcher, search, folder, actionsSwitcher] {
locatorWatcher->deleteLater();
if (locatorWatcher->isCanceled()) {
connect(search, &SearchResult::canceled, matcher, [matcher] { delete matcher; });
connect(matcher, &LocatorMatcher::done, search,
[matcher, search, folder, actionsSwitcher](bool success) {
matcher->deleteLater();
if (!success) {
search->finishSearch(true);
return;
}
Links links;
for (int i = 0; i < locatorWatcher->future().resultCount(); ++i) {
const LocatorFilterEntry &entry = locatorWatcher->resultAt(i);
const auto entries = matcher->outputData();
for (const LocatorFilterEntry &entry : entries) {
static const QStringList prefixBlacklist{"main(", "~", "qHash(", "begin()", "end()",
"cbegin()", "cend()", "constBegin()", "constEnd()"};
if (Utils::anyOf(prefixBlacklist, [&entry](const QString &prefix) {
@@ -614,10 +610,7 @@ void CppModelManager::findUnusedFunctions(const FilePath &folder)
for (int i = 0; i < inFlightCount; ++i)
checkNextFunctionForUnused(search, findRefsFuture, actionsSwitcher);
});
locatorWatcher->setFuture(
Utils::runAsync([functionsFilter](QFutureInterface<LocatorFilterEntry> &future) {
future.reportResults(functionsFilter->matchesFor(future, {}));
}));
matcher->start();
}
void CppModelManager::checkForUnusedSymbol(SearchResult *search,