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[kernel] Remove process & thread self-handles

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For the coming switch to cap/handle ref-counting being the main lifetime
determiner of objects, get rid of self handles for threads and processes
to avoid circular references. Instead, passing 0 to syscalls expecting a
thread or process handle signifies "this process/thread".
This commit is contained in:
Justin C. Miller
2023-02-19 11:23:23 -08:00
parent d2a6113fb7
commit 94b2a79f79
13 changed files with 45 additions and 63 deletions
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24
src/kernel/objects/process.cpp
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@@ -24,8 +24,6 @@ process::process() :
kobject {kobject::type::process},
m_state {state::running}
{
m_self_handle = g_cap_table.create(this, process::self_caps);
add_handle(m_self_handle);
}
// The "kernel process"-only constructor
@@ -71,28 +69,6 @@ process::exit(int32_t code)
current.exit();
}
void
process::update()
{
util::scoped_lock lock {m_threads_lock};
kassert(false, "process::update used!");
kassert(m_threads.count() > 0, "process::update with zero threads!");
size_t i = 0;
while (i < m_threads.count()) {
thread *th = m_threads[i];
if (th->has_state(thread::state::exited)) {
m_threads.remove_swap_at(i);
continue;
}
i++;
}
if (m_threads.count() == 0)
exit(-1);
}
thread *
process::create_thread(uintptr_t rsp3, uint8_t priority)
{