Update external library bindings

[mdboom]

This updates external (nvvm, nvjitlink and cufile) based on a few bugfixes. This wraps up 3 separate changes:

• Fix a race condition where the init function could be called multiple times (increasing startup times)

• Adds cdef _get_ptr to class wrappers as a way to get a pointer to the underlying buffer without making a Python call (this is largely in support of future work to refactor how the buffer is allocated, in support of the future NVML bindings) -- In this case, there are no functions here that make use of _get_ptr, but since they aren't exposed, Cython generates a static C function which the linker will remove because no one uses it. For example:

static intptr_t __pyx_f_4cuda_8bindings_6cufile_13_py_anon_pod1__get_ptr(struct __pyx_obj_4cuda_8bindings_6cufile__py_anon_pod1 *__pyx_v_self);

• Fixes a bug where string buffers that have invalid UTF-8 in "garbage" memory after the null-terminator character would raise a UnicodeDecodeError.

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[mdboom]

/ok to test

[leofang]

Q: Should we turn this function into a no-op (or remove it) to confirm the string fix?

cuda-python/cuda_bindings/tests/test_cufile.py

Lines 124 to 135 in 6ed6f6c

	defsafe_decode_string(raw_value):
	"""Safely decode a string value from ctypes buffer."""
	# Find null terminator if present
	null_pos=raw_value.find(b"\x00")
	ifnull_pos!=-1:
	raw_value=raw_value[:null_pos]
	# Decode with error handling
	try:
	returnraw_value.decode("utf-8", errors="ignore")
	exceptUnicodeDecodeError:
	# If UTF-8 fails, try to decode as bytes
	returnstr(raw_value)

[mdboom]

@leofang: WRT the "to-be-backported" label... do we usually backport these non-runtime/non-driver changes?

Q: Should we turn this function into a no-op (or remove it) to confirm the string fix?

cuda-python/cuda_bindings/tests/test_cufile.py

Lines 124 to 135 in 6ed6f6c

	defsafe_decode_string(raw_value):
	"""Safely decode a string value from ctypes buffer."""
	# Find null terminator if present
	null_pos=raw_value.find(b"\x00")
	ifnull_pos!=-1:
	raw_value=raw_value[:null_pos]
	# Decode with error handling
	try:
	returnraw_value.decode("utf-8", errors="ignore")
	exceptUnicodeDecodeError:
	# If UTF-8 fails, try to decode as bytes
	returnstr(raw_value)

Yeah, I was just thinking the same thing.

[mdboom]

/ok to test

[leofang]

WRT the "to-be-backported" label... do we usually backport these non-runtime/non-driver changes?

Yes. We backport all bug fixes and enhancements to the 12.9 branch. For this PR since the diff is simple (not touching GHA files or build system), the bot can automatically backport it after the PR is merged.

[mdboom]

WRT the "to-be-backported" label... do we usually backport these non-runtime/non-driver changes?

Yes. We backport all bug fixes and enhancements to the 12.9 branch. For this PR since the diff is simple (not touching GHA files or build system), the bot can automatically backport it after the PR is merged.

Ah got it. That was the source of my confusion.

[leofang]

Ah got it. That was the source of my confusion.

Hopefully #1199 can help eliminate the confusion 🙂

[github-actions]

Backport failed for 12.9.x, because it was unable to cherry-pick the commit(s).

Please cherry-pick the changes locally and resolve any conflicts.

git fetch origin 12.9.x
git worktree add -d .worktree/backport-1243-to-12.9.x origin/12.9.x
cd .worktree/backport-1243-to-12.9.x
git switch --create backport-1243-to-12.9.x
git cherry-pick -x 1a118b746f8cad978845fad000572205abc604b1

[github-actions]

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