Update contrib/restricted/aws/aws-c-common to 0.12.2

commit_hash:fc6e67f9b12b0b888c90bb97bf2b1cbfcd74a044

1 files changed, 19 insertions, 0 deletions

diff --git a/contrib/restricted/aws/aws-c-common/source/byte_buf.c b/contrib/restricted/aws/aws-c-common/source/byte_buf.c
index b815b6bfb74..da3748e812b 100644
--- a/contrib/restricted/aws/aws-c-common/source/byte_buf.c
+++ b/contrib/restricted/aws/aws-c-common/source/byte_buf.c
@@ -816,6 +816,25 @@ int aws_byte_buf_reserve_relative(struct aws_byte_buf *buffer, size_t additional
     return aws_byte_buf_reserve(buffer, requested_capacity);
 }
 
+int aws_byte_buf_reserve_smart(struct aws_byte_buf *buffer, size_t requested_capacity) {
+
+    if (requested_capacity <= buffer->capacity) {
+        AWS_POSTCONDITION(aws_byte_buf_is_valid(buffer));
+        return AWS_OP_SUCCESS;
+    }
+    size_t double_current_capacity = aws_add_size_saturating(buffer->capacity, buffer->capacity);
+    size_t new_capacity = aws_max_size(requested_capacity, double_current_capacity);
+    return aws_byte_buf_reserve(buffer, new_capacity);
+}
+
+int aws_byte_buf_reserve_smart_relative(struct aws_byte_buf *buffer, size_t additional_length) {
+    size_t requested_capacity = 0;
+    if (AWS_UNLIKELY(aws_add_size_checked(buffer->len, additional_length, &requested_capacity))) {
+        return AWS_OP_ERR;
+    }
+    return aws_byte_buf_reserve_smart(buffer, requested_capacity);
+}
+
 struct aws_byte_cursor aws_byte_cursor_right_trim_pred(
     const struct aws_byte_cursor *source,
     aws_byte_predicate_fn *predicate) {