1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __PERF_THREADS_H
3 #define __PERF_THREADS_H
4
5 #include "hashmap.h"
6 #include "rwsem.h"
7
8 struct thread;
9
10 #define THREADS__TABLE_BITS 3
11 #define THREADS__TABLE_SIZE (1 << THREADS__TABLE_BITS)
12
13 struct threads_table_entry {
14 /* Key is tid, value is struct thread. */
15 struct hashmap shard;
16 struct rw_semaphore lock;
17 struct thread *last_match;
18 };
19
20 struct threads {
21 struct threads_table_entry table[THREADS__TABLE_SIZE];
22 };
23
24 void threads__init(struct threads *threads);
25 void threads__exit(struct threads *threads);
26 size_t threads__nr(struct threads *threads);
27 struct thread *threads__find(struct threads *threads, pid_t tid);
28 struct thread *threads__findnew(struct threads *threads, pid_t pid, pid_t tid, bool *created);
29 void threads__remove_all_threads(struct threads *threads);
30 void threads__remove(struct threads *threads, struct thread *thread);
31 int threads__for_each_thread(struct threads *threads,
32 int (*fn)(struct thread *thread, void *data),
33 void *data);
34
35 #endif /* __PERF_THREADS_H */
36
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