Minimize the scope of acquire_lock #614
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qinsoon
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This PR changes the scope of
Space.acquire_lock. The lock was introduced in #555, and it caused bad allocation performance when we have many threads (e.g. more than 24 threads, mutator threads or GC threads with copying allocators). This pull request reduces the scope of thisacquire_lock, and the overhead from it is mostly neglectable.This closes #610.
Mutator performance after this pull request
