[pypy-dev] How will STM actually integrate with normal Python code
tbaldridge at gmail.com
Tue Jan 31 16:26:46 CET 2012
As Armin stated in a recent mailing list thread:
"In PyPy, we look at STM like we would look at the GC. It may be
replaced in a week by a different one, but for the "end user" writing
pure Python code, it essentially doesn't make a difference. "
So, my question is, how exactly will STM integrate into PyPy? I'm
going to take a guess here, and perhaps someone can elaborate to
>From what I'm reading, PyPy with STM will offer the same promises (or
lack of promises) that the JVM and CLR offer their code:
For example, this code:
if "foo" in d:
Will never cause a segmentation fault (due to multiple threads
accessing "d" at the same time), but it may throw a KeyError. That is,
all Python code will continue to be "thread-safe" as it is in CPython,
but race conditions will continue to exist and must be handled in
standard ways (locks, CAS, etc.).
Am I right in this description?
“One of the main causes of the fall of the Roman Empire was
that–lacking zero–they had no way to indicate successful termination
of their C programs.”
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