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Splitting the ptrace interrupt and wait loops allows us to send the interrupt to all tasks and threads first, so they can start stopping in parallel while we're still sending interrupts to the remaining ones. This should improve restore performance for large process trees. The redundant parse_threads calls in catch_tasks are removed as threads are already parsed in attach_to_tasks which is called earlier. Signed-off-by: Andrei Vagin <avagin@google.com> |
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