Add counter access to memory debug API

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>

include/mbedtls/memory_buffer_alloc.h

@@ -90,6 +90,19 @@ void mbedtls_memory_buffer_set_verify( int verify );
  */
 void mbedtls_memory_buffer_alloc_status( void );
 
+/**
+ * \brief   Get the number of alloc/free so far.
+ *
+ * \param alloc_count   Number of allocations.
+ * \param free_count    Number of frees.
+ */
+void mbedtls_memory_buffer_alloc_count_get( size_t *alloc_count, size_t *free_count );
+
+/**
+ * \brief   Reset alloc/free counters.
+ */
+void mbedtls_memory_buffer_alloc_count_reset( void );
+
 /**
  * \brief   Get the peak heap usage so far
  *

library/memory_buffer_alloc.c

@@ -522,6 +522,18 @@ void mbedtls_memory_buffer_alloc_status( void )
     }
 }
 
+void mbedtls_memory_buffer_alloc_count_get( size_t *alloc_count, size_t *free_count )
+{
+    *alloc_count = heap.alloc_count;
+    *free_count = heap.free_count;
+}
+
+void mbedtls_memory_buffer_alloc_count_reset( void )
+{
+    heap.alloc_count = 0;
+    heap.free_count = 0;
+}
+
 void mbedtls_memory_buffer_alloc_max_get( size_t *max_used, size_t *max_blocks )
 {
     *max_used   = heap.maximum_used;