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-rw-r--r--tools/perf/util/threads.h35
1 files changed, 35 insertions, 0 deletions
diff --git a/tools/perf/util/threads.h b/tools/perf/util/threads.h
new file mode 100644
index 0000000000..da68d2223f
--- /dev/null
+++ b/tools/perf/util/threads.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __PERF_THREADS_H
+#define __PERF_THREADS_H
+
+#include "hashmap.h"
+#include "rwsem.h"
+
+struct thread;
+
+#define THREADS__TABLE_BITS 3
+#define THREADS__TABLE_SIZE (1 << THREADS__TABLE_BITS)
+
+struct threads_table_entry {
+ /* Key is tid, value is struct thread. */
+ struct hashmap shard;
+ struct rw_semaphore lock;
+ struct thread *last_match;
+};
+
+struct threads {
+ struct threads_table_entry table[THREADS__TABLE_SIZE];
+};
+
+void threads__init(struct threads *threads);
+void threads__exit(struct threads *threads);
+size_t threads__nr(struct threads *threads);
+struct thread *threads__find(struct threads *threads, pid_t tid);
+struct thread *threads__findnew(struct threads *threads, pid_t pid, pid_t tid, bool *created);
+void threads__remove_all_threads(struct threads *threads);
+void threads__remove(struct threads *threads, struct thread *thread);
+int threads__for_each_thread(struct threads *threads,
+ int (*fn)(struct thread *thread, void *data),
+ void *data);
+
+#endif /* __PERF_THREADS_H */