Add Python fetchv binding

CMakeLists.txt

@@ -142,9 +142,9 @@ if(${HMLL_ENABLE_SAFETENSORS})
     add_compile_definitions(__HMLL_SAFETENSORS_ENABLED__=1)
     add_compile_definitions(__HMLL_TENSORS_ENABLED__=1)
     fetchcontent_declare(
-            yyjson
-            GIT_REPOSITORY https://github.com/ibireme/yyjson.git
-            GIT_TAG        master
+        yyjson
+        GIT_REPOSITORY https://github.com/ibireme/yyjson.git
+        GIT_TAG        master
     )
     fetchcontent_makeavailable(yyjson)
 
@@ -232,6 +232,7 @@ if(${HMLL_BUILD_TESTS})
             tests/tests_hmll_dtype.cpp
             tests/tests_hmll_safetensors.cpp
             tests/tests_hmll_integration_safetensors.cpp
+            tests/tests_hmll_fetchv.cpp
         )
     endif()
 

include/hmll/hmll.h

@@ -132,6 +132,7 @@ HMLL_EXTERN struct hmll_error hmll_get_mmap_view(struct hmll *ctx, int iofile, s
 /** Tensors manipulation stubs - enabled if a higher-level tensor format is enabled **/
 #ifdef __HMLL_TENSORS_ENABLED__
 HMLL_EXTERN uint8_t hmll_nbits(enum hmll_dtype dtype) NO_EXCEPT;
+HMLL_EXTERN size_t hmll_nbytes(const struct hmll_tensor_specs *specs) NO_EXCEPT;
 HMLL_EXTERN size_t hmll_numel(const struct hmll_tensor_specs *specs) NO_EXCEPT;
 HMLL_EXTERN void hmll_free_registry(struct hmll_registry *reg) NO_EXCEPT;
 HMLL_EXTERN unsigned char hmll_contains(const struct hmll *ctx, const struct hmll_registry *reg, const char *name) NO_EXCEPT;

include/hmll/linux/backend/iouring.h

@@ -11,10 +11,6 @@
 #define HMLL_URING_BUFFER_SIZE (512U * 1024)
 #endif
 
-#ifndef HMLL_URING_CQE_BATCH_SIZE
-#define HMLL_URING_CQE_BATCH_SIZE 16
-#endif
-
 #include <liburing.h>
 #include "hmll/types.h"
 

lib/context.c

@@ -19,5 +19,6 @@ void hmll_destroy(struct hmll *ctx)
     if (ctx->fetcher) {
         ctx->fetcher->backend_free(ctx->fetcher->backend_impl_);
         free(ctx->fetcher);
+        ctx->fetcher = NULL;
     }
 }