projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| 2463b787 JR |
1 | /* |
| 2 | * Copyright (C) 2020 Philippe Proulx <pproulx@efficios.com> | |
| 3 | * | |
| 4 | * SPDX-License-Identifier: LGPL-2.1-only | |
| 5 | * | |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef LTTNG_EVENT_EXPR_INTERNAL_H | |
| 9 | #define LTTNG_EVENT_EXPR_INTERNAL_H | |
| 10 | ||
| 11 | #include <assert.h> | |
| 12 | #include <common/macros.h> | |
| 13 | #include <lttng/event-expr.h> | |
| 14 | #include <urcu/ref.h> | |
| 15 | ||
| 16 | struct lttng_event_expr { | |
| 17 | struct urcu_ref ref; | |
| 18 | enum lttng_event_expr_type type; | |
| 19 | }; | |
| 20 | ||
| 21 | /* | |
| 22 | * `LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD` and | |
| 23 | * `LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD`. | |
| 24 | */ | |
| 25 | struct lttng_event_expr_field { | |
| 26 | struct lttng_event_expr parent; | |
| 27 | char *name; | |
| 28 | }; | |
| 29 | ||
| 30 | /* `LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD` */ | |
| 31 | struct lttng_event_expr_app_specific_context_field { | |
| 32 | struct lttng_event_expr parent; | |
| 33 | char *provider_name; | |
| 34 | char *type_name; | |
| 35 | }; | |
| 36 | ||
| 37 | /* `LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT` */ | |
| 38 | struct lttng_event_expr_array_field_element { | |
| 39 | struct lttng_event_expr parent; | |
| 40 | ||
| 41 | /* Owned by this */ | |
| 42 | struct lttng_event_expr *array_field_expr; | |
| 43 | ||
| 44 | unsigned int index; | |
| 45 | }; | |
| 46 | ||
| 47 | /* | |
| 48 | * Returns whether or not `expr` is an l-value (locator value). | |
| 49 | */ | |
| 50 | static inline | |
| 51 | bool lttng_event_expr_is_lvalue(const struct lttng_event_expr *expr) | |
| 52 | { | |
| 53 | assert(expr); | |
| 54 | return expr->type == LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD || | |
| 55 | expr->type == LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD || | |
| 56 | expr->type == LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD || | |
| 57 | expr->type == LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT; | |
| 58 | } | |
| 59 | ||
| 60 | LTTNG_HIDDEN | |
| 61 | void lttng_event_expr_get(struct lttng_event_expr *expr); | |
| 62 | ||
| 63 | LTTNG_HIDDEN | |
| 64 | void lttng_event_expr_put(struct lttng_event_expr *expr); | |
| 65 | ||
| 66 | #endif /* LTTNG_EVENT_EXPR_INTERNAL_H */ |