1 #ifndef JEMALLOC_INTERNAL_BACKGROUND_THREAD_INLINES_H
2 #define JEMALLOC_INTERNAL_BACKGROUND_THREAD_INLINES_H
3 
4 JEMALLOC_ALWAYS_INLINE bool
5 background_thread_enabled(void) {
6 	return atomic_load_b(&background_thread_enabled_state, ATOMIC_RELAXED);
7 }
8 
9 JEMALLOC_ALWAYS_INLINE void
10 background_thread_enabled_set(tsdn_t *tsdn, bool state) {
11 	malloc_mutex_assert_owner(tsdn, &background_thread_lock);
12 	atomic_store_b(&background_thread_enabled_state, state, ATOMIC_RELAXED);
13 }
14 
15 JEMALLOC_ALWAYS_INLINE background_thread_info_t *
16 arena_background_thread_info_get(arena_t *arena) {
17 	unsigned arena_ind = arena_ind_get(arena);
18 	return &background_thread_info[arena_ind % ncpus];
19 }
20 
21 JEMALLOC_ALWAYS_INLINE uint64_t
22 background_thread_wakeup_time_get(background_thread_info_t *info) {
23 	uint64_t next_wakeup = nstime_ns(&info->next_wakeup);
24 	assert(atomic_load_b(&info->indefinite_sleep, ATOMIC_ACQUIRE) ==
25 	    (next_wakeup == BACKGROUND_THREAD_INDEFINITE_SLEEP));
26 	return next_wakeup;
27 }
28 
29 JEMALLOC_ALWAYS_INLINE void
30 background_thread_wakeup_time_set(tsdn_t *tsdn, background_thread_info_t *info,
31     uint64_t wakeup_time) {
32 	malloc_mutex_assert_owner(tsdn, &info->mtx);
33 	atomic_store_b(&info->indefinite_sleep,
34 	    wakeup_time == BACKGROUND_THREAD_INDEFINITE_SLEEP, ATOMIC_RELEASE);
35 	nstime_init(&info->next_wakeup, wakeup_time);
36 }
37 
38 JEMALLOC_ALWAYS_INLINE bool
39 background_thread_indefinite_sleep(background_thread_info_t *info) {
40 	return atomic_load_b(&info->indefinite_sleep, ATOMIC_ACQUIRE);
41 }
42 
43 JEMALLOC_ALWAYS_INLINE void
44 arena_background_thread_inactivity_check(tsdn_t *tsdn, arena_t *arena,
45     bool is_background_thread) {
46 	if (!background_thread_enabled() || is_background_thread) {
47 		return;
48 	}
49 	background_thread_info_t *info =
50 	    arena_background_thread_info_get(arena);
51 	if (background_thread_indefinite_sleep(info)) {
52 		background_thread_interval_check(tsdn, arena,
53 		    &arena->decay_dirty, 0);
54 	}
55 }
56 
57 #endif /* JEMALLOC_INTERNAL_BACKGROUND_THREAD_INLINES_H */
58