projects / lttng-ust.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c196845 MJ |
1 | // SPDX-FileCopyrightText: 2021 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 2 | // | |
| 3 | // SPDX-License-Identifier: MIT | |
| 4 | ||
| cbc06a3b | 5 | /* |
| cbc06a3b MD |
6 | * LTTng-UST API compatibility header |
| 7 | */ | |
| 8 | ||
| 9 | #ifndef _LTTNG_UST_API_COMPAT_H | |
| 10 | #define _LTTNG_UST_API_COMPAT_H | |
| 11 | ||
| 12 | /* | |
| 1f8a8ec9 MD |
13 | * The compat API version controls backward API compatibility at the |
| 14 | * source-code level. | |
| 15 | * | |
| 16 | * In order to disable compatibility API for a range of API versions, define | |
| 17 | * LTTNG_UST_COMPAT_API_VERSION to the oldest API version for which to provide | |
| 18 | * compatibility. | |
| cbc06a3b MD |
19 | * |
| 20 | * If LTTNG_UST_COMPAT_API_VERSION is undefined, API compatibility for | |
| 21 | * all API versions is provided. | |
| 22 | * If LTTNG_UST_COMPAT_API_VERSION is defined to N, API compatibility | |
| 1f8a8ec9 MD |
23 | * for versions N or higher is provided, thus not defining compatibility macros |
| 24 | * for versions lower than N. | |
| cbc06a3b MD |
25 | */ |
| 26 | ||
| 27 | #ifndef LTTNG_UST_COMPAT_API_VERSION | |
| 28 | #define LTTNG_UST_COMPAT_API_VERSION 0 | |
| 29 | #endif | |
| 30 | ||
| 31 | #define LTTNG_UST_COMPAT_API(major) \ | |
| 32 | (LTTNG_UST_COMPAT_API_VERSION <= (major)) | |
| 33 | ||
| 34 | #endif /* _LTTNG_UST_API_COMPAT_H */ |