Add umfIsFreeOpDefault(hProvider)

Add umfIsFreeOpDefault(hProvider) to check
if op.ext.free is set to the default function pointer.

Signed-off-by: Lukasz Dorau <lukasz.dorau@intel.com>

Author: ldorau

src/memory_pool.c

@@ -43,8 +43,7 @@ static umf_result_t umfPoolCreateInternal(const umf_memory_pool_ops_t *ops,
     if (!(flags & UMF_POOL_CREATE_FLAG_DISABLE_TRACKING)) {
         // Wrap provider with memory tracking provider.
         // Check if the provider supports the free() operation.
-        bool upstreamDoesNotFree = (umfMemoryProviderFree(provider, NULL, 0) ==
-                                    UMF_RESULT_ERROR_NOT_SUPPORTED);
+        bool upstreamDoesNotFree = umfIsFreeOpDefault(provider);
         ret = umfTrackingMemoryProviderCreate(provider, pool, &pool->provider,
                                               upstreamDoesNotFree);
         if (ret != UMF_RESULT_SUCCESS) {

src/memory_provider.c

@@ -169,6 +169,10 @@ static bool validateOps(const umf_memory_provider_ops_t *ops) {
            validateOpsIpc(&(ops->ipc));
 }
 
+bool umfIsFreeOpDefault(umf_memory_provider_handle_t hProvider) {
+    return (hProvider->ops.ext.free == umfDefaultFree);
+}
+
 umf_result_t umfMemoryProviderCreate(const umf_memory_provider_ops_t *ops,
                                      void *params,
                                      umf_memory_provider_handle_t *hProvider) {

src/memory_provider_internal.h

@@ -10,6 +10,8 @@
 #ifndef UMF_MEMORY_PROVIDER_INTERNAL_H
 #define UMF_MEMORY_PROVIDER_INTERNAL_H 1
 
+#include <stdbool.h>
+
 #include <umf/memory_provider.h>
 
 #ifdef __cplusplus
@@ -18,6 +20,7 @@ extern "C" {
 
 void *umfMemoryProviderGetPriv(umf_memory_provider_handle_t hProvider);
 umf_memory_provider_handle_t *umfGetLastFailedMemoryProviderPtr(void);
+bool umfIsFreeOpDefault(umf_memory_provider_handle_t hProvider);
 
 #ifdef __cplusplus
 }

test/pools/disjoint_pool.cpp

@@ -82,10 +82,7 @@ TEST_F(test, sharedLimits) {
         }
         umf_result_t free(void *ptr, [[maybe_unused]] size_t size) noexcept {
             ::free(ptr);
-            // umfMemoryProviderFree(provider, NULL, 0) is called inside umfPoolCreateInternal()
-            if (ptr != NULL && size != 0) {
-                numFrees++;
-            }
+            numFrees++;
             return UMF_RESULT_SUCCESS;
         }
     };