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Everywhere: Make tracking cpu usage independent from system ticks

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This switches tracking CPU usage to more accurately measure time in
user and kernel land using either the TSC or another time source.
This will also come in handy when implementing a tickless kernel mode.
This commit is contained in:
Tom 2021-07-14 21:46:32 -06:00 • committed by Andreas Kling
parent 7e77a2ec40
commit a635ff4e60
13 changed files with 174 additions and 85 deletions
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10
Userland/Applications/SystemMonitor/ProcessModel.h
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@ -88,8 +88,8 @@ private:
pid_t ppid;
pid_t pgid;
pid_t sid;
unsigned ticks_user;
unsigned ticks_kernel;
u64 time_user;
u64 time_kernel;
bool kernel;
String executable;
String name;
@ -129,7 +129,7 @@ private:
Vector<int> m_tids;
RefPtr<Core::File> m_proc_all;
GUI::Icon m_kernel_process_icon;
u64 m_total_ticks_scheduled { 0 };
u64 m_total_ticks_scheduled_kernel { 0 };
bool m_has_total_ticks { false };
u64 m_total_time_scheduled { 0 };
u64 m_total_time_scheduled_kernel { 0 };
bool m_has_total_scheduled_time { false };
};