mirror of
https://github.com/RGBCube/serenity
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35138437ef
This patch adds three separate per-process fault counters:
- Inode faults
An inode fault happens when we've memory-mapped a file from disk
and we end up having to load 1 page (4KB) of the file into memory.
- Zero faults
Memory returned by mmap() is lazily zeroed out. Every time we have
to zero out 1 page, we count a zero fault.
- CoW faults
VM objects can be shared by multiple mappings that make their own
unique copy iff they want to modify it. The typical reason here is
memory shared between a parent and child process.
74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
#pragma once
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#include <AK/String.h>
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#include <AK/HashMap.h>
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#include <AK/Vector.h>
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#include <LibGUI/GModel.h>
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#include <unistd.h>
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class GraphWidget;
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class ProcessModel final : public GModel {
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public:
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enum Column {
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Icon = 0,
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Name,
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CPU,
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State,
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Priority,
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User,
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PID,
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Virtual,
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Physical,
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Syscalls,
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InodeFaults,
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ZeroFaults,
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CowFaults,
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__Count
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};
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static NonnullRefPtr<ProcessModel> create(GraphWidget& graph) { return adopt(*new ProcessModel(graph)); }
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virtual ~ProcessModel() override;
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virtual int row_count(const GModelIndex&) const override;
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virtual int column_count(const GModelIndex&) const override;
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virtual String column_name(int column) const override;
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virtual ColumnMetadata column_metadata(int column) const override;
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virtual GVariant data(const GModelIndex&, Role = Role::Display) const override;
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virtual void update() override;
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private:
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explicit ProcessModel(GraphWidget&);
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GraphWidget& m_graph;
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struct ProcessState {
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pid_t pid;
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unsigned times_scheduled;
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String name;
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String state;
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String user;
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String priority;
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size_t amount_virtual;
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size_t amount_resident;
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unsigned syscall_count;
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unsigned inode_faults;
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unsigned zero_faults;
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unsigned cow_faults;
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float cpu_percent;
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int icon_id;
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};
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struct Process {
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ProcessState current_state;
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ProcessState previous_state;
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};
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HashMap<uid_t, String> m_usernames;
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HashMap<pid_t, NonnullOwnPtr<Process>> m_processes;
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Vector<pid_t> m_pids;
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RefPtr<GraphicsBitmap> m_generic_process_icon;
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RefPtr<GraphicsBitmap> m_high_priority_icon;
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RefPtr<GraphicsBitmap> m_low_priority_icon;
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RefPtr<GraphicsBitmap> m_normal_priority_icon;
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};
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