projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| 0220be14 JG |
1 | /* |
| 2 | * Copyright (C) 2022 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
| 3 | * | |
| 4 | * SPDX-License-Identifier: GPL-2.0-only | |
| 5 | * | |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef LTTNG_STREAM_CLASS_H | |
| 9 | #define LTTNG_STREAM_CLASS_H | |
| 10 | ||
| 11 | #include "field.hpp" | |
| 12 | ||
| 24ed18f2 JG |
13 | #include <vendor/optional.hpp> |
| 14 | ||
| 0220be14 JG |
15 | #include <vector> |
| 16 | ||
| 17 | namespace lttng { | |
| 18 | namespace sessiond { | |
| 19 | namespace trace { | |
| 20 | ||
| 21 | class trace_class_visitor; | |
| 22 | ||
| 23 | class stream_class { | |
| 24 | public: | |
| 25 | enum class header_type { COMPACT, LARGE }; | |
| 26 | ||
| 27 | /* | |
| 28 | * Derived classes must implement _accept_on_event_classes() | |
| 29 | * to continue the traversal to the stream class' event classes. | |
| 30 | */ | |
| 31 | void accept(trace_class_visitor& visitor) const; | |
| 32 | virtual ~stream_class() = default; | |
| 33 | ||
| 4bcf2294 JG |
34 | virtual const type* packet_context() const; |
| 35 | virtual const type* event_header() const; | |
| 36 | virtual const type* event_context() const; | |
| 0220be14 JG |
37 | |
| 38 | const unsigned int id; | |
| 65cd3c0c JG |
39 | /* |
| 40 | * header_type is suffixed with '_' to work-around a bug in older | |
| 41 | * GCCs (before 6) that do not recognize hidden/shadowed enumeration as valid | |
| 42 | * nested-name-specifiers. | |
| 43 | */ | |
| 44 | const header_type header_type_; | |
| 24ed18f2 | 45 | const nonstd::optional<std::string> default_clock_class_name; |
| 0220be14 JG |
46 | |
| 47 | protected: | |
| 24ed18f2 JG |
48 | stream_class(unsigned int id, |
| 49 | enum header_type header_type, | |
| 50 | nonstd::optional<std::string> default_clock_class_name = nonstd::nullopt); | |
| 0220be14 JG |
51 | virtual void _accept_on_event_classes(trace_class_visitor& trace_class_visitor) const = 0; |
| 52 | ||
| 24ed18f2 JG |
53 | lttng::sessiond::trace::type::cuptr _packet_context; |
| 54 | lttng::sessiond::trace::type::cuptr _event_header; | |
| 55 | lttng::sessiond::trace::type::cuptr _event_context; | |
| 0220be14 JG |
56 | }; |
| 57 | ||
| 58 | } /* namespace trace */ | |
| 59 | } /* namespace sessiond */ | |
| 60 | } /* namespace lttng */ | |
| 61 | ||
| 62 | #endif /* LTTNG_STREAM_CLASS_H */ |