Update to not use pywin32

Author: mdboom

cuda_bindings/cuda/bindings/cyruntime.pyx.in

@@ -2,17 +2,9 @@
 # SPDX-License-Identifier: LicenseRef-NVIDIA-SOFTWARE-LICENSE
 
 # This code was automatically generated with version 13.0.0. Do not modify it directly.
-from libc.stdint cimport uintptr_t
 cimport cuda.bindings._bindings.cyruntime as cyruntime
 cimport cython
 
-from cuda.pathfinder import load_nvidia_dynamic_lib
-{{if 'Windows' == platform.system()}}
-import win32api
-{{else}}
-cimport cuda.bindings._lib.dlfcn as dlfcn
-{{endif}}
-
 {{if 'cudaDeviceReset' in found_functions}}
 
 cdef cudaError_t cudaDeviceReset() except ?cudaErrorCallRequiresNewerDriver nogil:
@@ -1893,23 +1885,36 @@ cdef cudaError_t cudaGraphicsVDPAURegisterOutputSurface(cudaGraphicsResource** r
 
 {{if True}}
 
+from libc.stdint cimport uintptr_t
+from cuda.pathfinder import load_nvidia_dynamic_lib
+{{if 'Windows' == platform.system()}}
+cimport cuda.bindings._lib.windll as windll
+{{else}}
+cimport cuda.bindings._lib.dlfcn as dlfcn
+{{endif}}
+
 cdef cudaError_t getLocalRuntimeVersion(int* runtimeVersion) except ?cudaErrorCallRequiresNewerDriver nogil:
+    
+    # Load
     with gil:
         lib = load_nvidia_dynamic_lib("cudart")
-        handle = <void *><uintptr_t>(lib._handle_uint)
+        handle = <void *><uintptr_t>lib._handle_uint
 
-        {{if 'Windows' == platform.system()}}
-        __cudaRuntimeGetVersion = <void*><unsigned long long>win32api.GetProcAddress(<uintptr_t>handle, 'cudaRuntimeGetVersion')
-        {{else}}
-        __cudaRuntimeGetVersion = dlfcn.dlsym(handle, 'cudaRuntimeGetVersion')
-        {{endif}}
+    {{if 'Windows' == platform.system()}}
+    __cudaRuntimeGetVersion = windll.GetProcAddress(handle, b'cudaRuntimeGetVersion')
+    {{else}}
+    __cudaRuntimeGetVersion = dlfcn.dlsym(handle, 'cudaRuntimeGetVersion')
+    {{endif}}
 
-        if __cudaRuntimeGetVersion == NULL:
+    if __cudaRuntimeGetVersion == NULL:
+        with gil:
             raise RuntimeError(f'Function "cudaRuntimeGetVersion" not found in {lib.abs_path}')
 
+    # Call
     cdef cudaError_t err = cudaSuccess
     err = (<cudaError_t (*)(int*) except ?cudaErrorCallRequiresNewerDriver nogil> __cudaRuntimeGetVersion)(runtimeVersion)
 
+    # Unload
     {{if 'Windows' != platform.system()}}
     dlfcn.dlclose(handle)
     {{endif}}