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SystemMonitor: Don't reopen process statistics file on every update

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This file can just remain open; we seek to its start anyways.
This previously accounted for over 5% of SystemMonitor runtime.
This commit is contained in:
kleines Filmröllchen 2023-06-24 14:41:13 +02:00 • committed by Linus Groh
parent 26d8ac844c
commit 7d53767ce8
2 changed files with 20 additions and 1 deletions
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4
Userland/Applications/SystemMonitor/ProcessModel.h
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@ -240,6 +240,10 @@ private:
int thread_model_row(Thread const& thread) const;
ErrorOr<void> initialize_process_statistics_file();
OwnPtr<Core::File> m_process_statistics_file;
// The thread list contains the same threads as the Process structs.
HashMap<int, NonnullRefPtr<Thread>> m_threads;
Vector<NonnullOwnPtr<Process>> m_processes;