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GH-100762: Don't call gen.throw() in gen.close(), unless necessary. (GH-101013)

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* Store exception stack depth in YIELD_VALUE's oparg and use it avoid expensive gen.throw() in gen.close() where possible.
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Mark Shannon 2023-01-24 17:25:37 +00:00 • committed by GitHub
parent daec3a463c
commit f02fa64bf2
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9 changed files with 39 additions and 12 deletions
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Python/bytecodes.c
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@ -720,7 +720,6 @@ dummy_func(
// NOTE: It's important that YIELD_VALUE never raises an exception!
// The compiler treats any exception raised here as a failed close()
// or throw() call.
assert(oparg == STACK_LEVEL());
assert(frame != &entry_frame);
PyGenObject *gen = _PyFrame_GetGenerator(frame);
gen->gi_frame_state = FRAME_SUSPENDED;