gh-155725: Remove PyGILState_Ensure usage from tracemalloc - #156409
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gh-155725: Remove PyGILState_Ensure usage from tracemalloc#156409kumaraditya303 wants to merge 1 commit into
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tracemalloc no longer acquires the GIL nor creates a temporary thread state when tracing memory allocations. A thread with no attached thread state now records the trace with the "<unknown>" traceback instead of attaching a thread state to capture the Python traceback. Threads without a thread state used to pay for a GIL acquisition plus a full thread state creation and destruction on every traced raw allocation, only to record an empty traceback anyway.
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tracemalloc no longer acquires the GIL nor creates a temporary thread state when tracing memory allocations. A thread with no attached thread state now records the trace with the
<unknown>traceback instead of attaching a thread state to capture the Python traceback. C level threads now don't create a thread state unnecessarily just to record a allocation, instead it uses<unknown>traceback if there is no existing active thread state.tracemallocraw-domain allocator hook violatesPYMEM_DOMAIN_RAWcontract #155725