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Rework Linker dispatching for cross-major nvJitLink/driver skew #1911

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Rework Linker dispatching for cross-major nvJitLink/driver skew #1911

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00ca330
refactor(core): per-instance Linker backend dispatch
cpcloud Apr 19, 2026
fe5a7b3
fix(core): retain driver log buffers for CUlinkState lifetime
cpcloud Apr 16, 2026
1572452
fix(core): retain cuLinkCreate optionValues array for CUlinkState lif…
cpcloud Apr 17, 2026
bd1874c
fix(core): release driver-backend buffers in Linker.close()
cpcloud Apr 19, 2026
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14 changes: 13 additions & 1 deletion cuda_core/cuda/core/_linker.pxd
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Original file line number Diff line number Diff line change
Expand Up @@ -2,15 +2,27 @@
#
# SPDX-License-Identifier: Apache-2.0

from libcpp.vector cimport vector

from cuda.bindings cimport cydriver

from ._resource_handles cimport NvJitLinkHandle, CuLinkHandle


cdef class Linker:
cdef:
NvJitLinkHandle _nvjitlink_handle
CuLinkHandle _culink_handle
# _drv_jit_keys/_drv_jit_values are the C arrays handed to cuLinkCreate.
# The driver retains a reference to the optionValues array for the life
# of the CUlinkState (it writes back log-size outputs into its slots),
# so these must live past cuLinkCreate and outlive cuLinkDestroy.
# Declared after _culink_handle so their C++ destructors run AFTER
# cuLinkDestroy executes during tp_dealloc.
vector[cydriver.CUjit_option] _drv_jit_keys
vector[void*] _drv_jit_values
bint _use_nvjitlink
object _drv_log_bufs # formatted_options list (driver); None for nvjitlink; cleared in link()
object _drv_log_bufs # formatted_options list (driver); None for nvjitlink
str _info_log # decoded log; None until link() or pre-link get_*_log()
str _error_log # decoded log; None until link() or pre-link get_*_log()
object _options # LinkerOptions
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