#ifndef JEMALLOC_INTERNAL_BACKGROUND_THREAD_STRUCTS_H #define JEMALLOC_INTERNAL_BACKGROUND_THREAD_STRUCTS_H /* This file really combines "structs" and "types", but only transitionally. */ #if defined(JEMALLOC_BACKGROUND_THREAD) || defined(JEMALLOC_LAZY_LOCK) # define JEMALLOC_PTHREAD_CREATE_WRAPPER #endif #define BACKGROUND_THREAD_INDEFINITE_SLEEP UINT64_MAX #define MAX_BACKGROUND_THREAD_LIMIT MALLOCX_ARENA_LIMIT typedef enum { background_thread_stopped, background_thread_started, /* Thread waits on the global lock when paused (for arena_reset). */ background_thread_paused, } background_thread_state_t; struct background_thread_info_s { #ifdef JEMALLOC_BACKGROUND_THREAD /* Background thread is pthread specific. */ pthread_t thread; pthread_cond_t cond; #endif malloc_mutex_t mtx; background_thread_state_t state; /* When true, it means no wakeup scheduled. */ atomic_b_t indefinite_sleep; /* Next scheduled wakeup time (absolute time in ns). */ nstime_t next_wakeup; /* * Since the last background thread run, newly added number of pages * that need to be purged by the next wakeup. This is adjusted on * epoch advance, and is used to determine whether we should signal the * background thread to wake up earlier. */ size_t npages_to_purge_new; /* Stats: total number of runs since started. */ uint64_t tot_n_runs; /* Stats: total sleep time since started. */ nstime_t tot_sleep_time; }; typedef struct background_thread_info_s background_thread_info_t; struct background_thread_stats_s { size_t num_threads; uint64_t num_runs; nstime_t run_interval; }; typedef struct background_thread_stats_s background_thread_stats_t; #endif /* JEMALLOC_INTERNAL_BACKGROUND_THREAD_STRUCTS_H */ |