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Kernel: Clean up thread stacks when a thread dies
We were forgetting where we put the userspace thread stacks, so added a member called Thread::m_userspace_thread_stack to keep track of it. Then, in ~Thread(), we now deallocate the userspace, kernel and signal stacks (if present.) Out of curiosity, the "init_stage2" process doesn't have a kernel stack which I found surprising. :^)
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2 changed files with 13 additions and 3 deletions
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@ -326,6 +326,7 @@ private:
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u32 m_pending_signals { 0 };
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u32 m_signal_mask { 0 };
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u32 m_kernel_stack_base { 0 };
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RefPtr<Region> m_userspace_stack_region;
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RefPtr<Region> m_kernel_stack_region;
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RefPtr<Region> m_kernel_stack_for_signal_handler_region;
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SignalActionData m_signal_action_data[32];
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