That did the trick.

Many thanks!

Am 09.07.2022 um 16:07 schrieb Cristian Adam:
Hi Björn,

Try this patch:

--- src/plugins/clangtools/clangtoolrunner.cpp
+++ src/plugins/clangtools/clangtoolrunner.cpp
@@ -67,6 +67,7 @@ void ClangToolRunner::init(const FilePath &outputDirPath, const Environment &env
     QTC_CHECK(!m_outputDirPath.isEmpty());
     m_process.setEnvironment(environment);
+    m_process.setUseCtrlCStub(true);
     m_process.setWorkingDirectory(m_outputDirPath); // Current clang-cl puts log file into working dir.      connect(&m_process, &QtcProcess::done, this, &ClangToolRunner::onProcessDone);
 }

Should fix your problem.

Cheers,
Cristian.

--------------------------------------------------------------------------------
*From:* Qt-creator <qt-creator-boun...@qt-project.org> on behalf of Björn Schäpers <qt-maill...@hazardy.de>
*Sent:* Friday, July 8, 2022 10:21 PM
*To:* qt-creator <qt-creator@qt-project.org>
*Subject:* [Qt-creator] clangtools cpu load
Hi there,

I'm witnessing a crippling cpu load from the clangtools plugin through
clang-tidy. I'm using a quite recent LLVM and qt-creator from this morning
(CEST) on Windows.

It seems the clang-tidy.exe analyzes the source files and afterwards starts a
child process llvm-tokenizer.exe, and there is the problem. When the Creator
kills the clang-tidy process, the llvm-tokenizer continues to live and use one
core at 100%.

So these processes accumulate while editing and very soon the whole system is
quite unusable until the llvm-tokenizers are done with their work.

Has anyone experience with that, or a way to handle the problem? As far as I can
see QProcess has no way of terminating the child processes.

Kind regards,
Björn.
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