| 1 | // SPDX-FileCopyrightText: 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 2 | // |
| 3 | // SPDX-License-Identifier: LGPL-2.1-or-later |
| 4 | |
| 5 | #include <string.h> |
| 6 | |
| 7 | #include "common/events.h" |
| 8 | #include "common/jhash.h" |
| 9 | |
| 10 | /* |
| 11 | * Needed by comm layer. |
| 12 | */ |
| 13 | struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_ust_session *session, |
| 14 | const struct lttng_ust_enum_desc *enum_desc) |
| 15 | { |
| 16 | struct lttng_enum *_enum; |
| 17 | struct cds_hlist_head *head; |
| 18 | struct cds_hlist_node *node; |
| 19 | size_t name_len = strlen(enum_desc->name); |
| 20 | uint32_t hash; |
| 21 | |
| 22 | hash = jhash(enum_desc->name, name_len, 0); |
| 23 | head = &session->priv->enums_ht.table[hash & (LTTNG_UST_ENUM_HT_SIZE - 1)]; |
| 24 | cds_hlist_for_each_entry(_enum, node, head, hlist) { |
| 25 | assert(_enum->desc); |
| 26 | if (_enum->desc == enum_desc) |
| 27 | return _enum; |
| 28 | } |
| 29 | return NULL; |
| 30 | } |