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