add user data

Author: DmitriyMusatkin

include/aws/s3/s3_buffer_pool.h

@@ -141,7 +141,8 @@ struct aws_s3_buffer_pool_config {
  * by logging failure reason, returning null and raising aws_error.
  */
 typedef struct aws_s3_buffer_pool *(aws_s3_buffer_pool_factory_fn)(struct aws_allocator *allocator,
-                                                                   struct aws_s3_buffer_pool_config config);
+                                                                   struct aws_s3_buffer_pool_config config, 
+                                                                   void *user_data);
 
 AWS_EXTERN_C_END
 AWS_POP_SANE_WARNING_LEVEL

include/aws/s3/s3_client.h

@@ -606,6 +606,9 @@ struct aws_s3_client_config {
      * if not set creates default implementation of the buffer pool.
      */
     aws_s3_buffer_pool_factory_fn *buffer_pool_factory_fn;
+
+    /* User data thats passed into pool factory. */
+    void *buffer_pool_user_data;
 };
 
 struct aws_s3_checksum_config {

source/s3_client.c

@@ -367,7 +367,8 @@ struct aws_s3_client *aws_s3_client_new(
     };
 
     if (client_config->buffer_pool_factory_fn) {
-        client->buffer_pool = client_config->buffer_pool_factory_fn(allocator, buffer_pool_config);
+        client->buffer_pool = client_config->buffer_pool_factory_fn(allocator, buffer_pool_config, 
+            client_config->buffer_pool_user_data);
     } else {
 
         client->buffer_pool = aws_s3_default_buffer_pool_new(allocator, buffer_pool_config);