b693c7868e
Added opt.background_thread to enable background threads, which handles purging currently. When enabled, decay ticks will not trigger purging (which will be left to the background threads). We limit the max number of threads to NCPUs. When percpu arena is enabled, set CPU affinity for the background threads as well. The sleep interval of background threads is dynamic and determined by computing number of pages to purge in the future (based on backlog).
30 lines
1.2 KiB
C
30 lines
1.2 KiB
C
#ifndef JEMALLOC_INTERNAL_BACKGROUND_THREAD_EXTERNS_H
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#define JEMALLOC_INTERNAL_BACKGROUND_THREAD_EXTERNS_H
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extern bool opt_background_thread;
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extern malloc_mutex_t background_thread_lock;
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extern atomic_b_t background_thread_enabled_state;
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extern size_t n_background_threads;
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extern background_thread_info_t *background_thread_info;
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bool background_thread_create(tsd_t *tsd, unsigned arena_ind);
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bool background_threads_init(tsd_t *tsd);
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bool background_threads_enable(tsd_t *tsd);
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bool background_threads_disable(tsd_t *tsd);
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bool background_threads_disable_single(tsd_t *tsd,
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background_thread_info_t *info);
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void background_thread_interval_check(tsdn_t *tsdn, arena_t *arena,
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arena_decay_t *decay, size_t npages_new);
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void background_thread_prefork0(tsdn_t *tsdn);
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void background_thread_prefork1(tsdn_t *tsdn);
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void background_thread_postfork_parent(tsdn_t *tsdn);
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void background_thread_postfork_child(tsdn_t *tsdn);
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#if defined(JEMALLOC_BACKGROUND_THREAD) || defined(JEMALLOC_LAZY_LOCK)
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extern int (*pthread_create_fptr)(pthread_t *__restrict, const pthread_attr_t *,
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void *(*)(void *), void *__restrict);
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void *load_pthread_create_fptr(void);
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#endif
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#endif /* JEMALLOC_INTERNAL_BACKGROUND_THREAD_EXTERNS_H */
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