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Kernel: Keep a list of threads per Process

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This allow us to iterate only the threads of the process.
This commit is contained in:
Tom 2021-01-22 23:24:33 -07:00 • committed by Andreas Kling
parent 03a9ee79fa
commit ac3927086f
4 changed files with 45 additions and 28 deletions
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18
Kernel/Process.cpp
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@ -907,4 +907,22 @@ PerformanceEventBuffer& Process::ensure_perf_events()
m_perf_event_buffer = make<PerformanceEventBuffer>();
return *m_perf_event_buffer;
}
bool Process::remove_thread(Thread& thread)
{
auto thread_cnt_before = m_thread_count.fetch_sub(1, AK::MemoryOrder::memory_order_acq_rel);
ASSERT(thread_cnt_before != 0);
ScopedSpinLock thread_list_lock(m_thread_list_lock);
m_thread_list.remove(thread);
return thread_cnt_before == 1;
}
bool Process::add_thread(Thread& thread)
{
bool is_first = m_thread_count.fetch_add(1, AK::MemoryOrder::memory_order_relaxed) == 0;
ScopedSpinLock thread_list_lock(m_thread_list_lock);
m_thread_list.append(thread);
return is_first;
}
}