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Kernel+ProcessManager: Let processes have an icon and show it in the table.

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Processes can now have an icon assigned, which is essentially a 16x16 RGBA32
bitmap exposed as a shared buffer ID.

You set the icon ID by calling set_process_icon(int) and the icon ID will be
exposed through /proc/all.

To make this work, I added a mechanism for making shared buffers globally
accessible. For safety reasons, each app seals the icon buffer before making
it global.

Right now the first call to GWindow::set_icon() is what determines the
process icon. We'll probably change this in the future. :^)
This commit is contained in:
Andreas Kling 2019-07-29 07:26:01 +02:00
parent 7356fd389f
commit 5ded77df39
14 changed files with 97 additions and 2 deletions
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3
Kernel/SharedBuffer.h
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@ -36,14 +36,17 @@ public:
bool is_shared_with(pid_t peer_pid);
void* ref_for_process_and_get_address(Process& process);
void share_with(pid_t peer_pid);
void share_globally() { m_global = true; }
void deref_for_process(Process& process);
void disown(pid_t pid);
size_t size() const { return m_vmo->size(); }
void destroy_if_unused();
void seal();
int id() const { return m_shared_buffer_id; }
int m_shared_buffer_id { -1 };
bool m_writable { true };
bool m_global { false };
NonnullRefPtr<VMObject> m_vmo;
Vector<Reference, 2> m_refs;
unsigned m_total_refs { 0 };