Function get_user_arg_offset

include/tscore/PluginUserArgs.h:56–62

Stagger each user argument value so we can detect mismatched * indices. * * For example, say a plugin associates data with both sessions and * transactions and that its session index is 2 and its transaction index is 4. * In this case, we'll hand back to the plugin 2002 for its session index and * 1004 for its transaction index. If it then accidentally uses its session * index to reference

 * That is, for a transaction, expect internally a value of 3 instead of 1003.
 */
static constexpr size_t
get_user_arg_offset(TSUserArgType type)
{
  // TS_USER_ARGS_TXN indices begin at 1000, TS_USER_ARGS_SSN begin at 2000,
  // etc.
  return (static_cast<size_t>(type) + 1) * 1000;
}

/** Verify that the user passed in an index whose value corresponds with the
 * type. See the comment above the declaration of get_user_arg_offset for the