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20effc67 TL |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
4 | #include "include/buffer.h" | |
5 | #include "include/buffer_raw.h" | |
6 | ||
7 | namespace ceph::buffer_instrumentation { | |
8 | ||
9 | // this is nothing more than an intermediary for a class hierarchy which | |
10 | // can placed between a user's custom raw and the `ceph::buffer::raw` to | |
11 | // detect whether a given `ceph::buffer::ptr` instance wraps a particular | |
12 | // raw's implementation (via `dynamic_cast` or `typeid`). | |
13 | // | |
14 | // users are supposed to define marker type (e.g. `class my_marker{}`). | |
15 | // this marker. i | |
16 | template <class MarkerT> | |
17 | struct instrumented_raw : public ceph::buffer::raw { | |
18 | using raw::raw; | |
19 | }; | |
20 | ||
21 | struct instrumented_bptr : public ceph::buffer::ptr { | |
22 | const ceph::buffer::raw* get_raw() const { | |
23 | return _raw; | |
24 | } | |
25 | ||
26 | template <class MarkerT> | |
27 | bool is_raw_marked() const { | |
28 | return dynamic_cast<const instrumented_raw<MarkerT>*>(get_raw()) != nullptr; | |
29 | } | |
30 | }; | |
31 | ||
32 | } // namespace ceph::buffer_instrumentation |