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#ifndef _TIMERTHREAD_H_
#define _TIMERTHREAD_H_
#include <glib.h>
#include <sys/time.h>
#include "auxlib.h"
#include "obj.h"
struct timerthread;
struct timerthread_thread {
struct timerthread *parent;
GTree *tree; // XXX investigate other structures
mutex_t lock;
cond_t cond;
int64_t next_wake;
struct timerthread_obj *obj;
};
struct timerthread {
unsigned int num_threads;
struct timerthread_thread *threads;
unsigned int thread_idx;
void (*func)(void *);
};
struct timerthread_obj {
struct obj obj;
struct timerthread *tt;
struct timerthread_thread *thread; // set once and then static
int64_t next_check; /* protected by ->lock */
int64_t last_run; /* ditto */
};
struct timerthread_queue {
struct timerthread_obj tt_obj;
const char *type;
mutex_t lock;
GTree *entries;
void (*run_now_func)(struct timerthread_queue *, void *);
void (*run_later_func)(struct timerthread_queue *, void *);
void (*free_func)(void *);
void (*entry_free_func)(void *);
};
struct timerthread_queue_entry {
int64_t when;
unsigned int idx; // for equal timestamps
void *source; // opaque
char __rest[0];
};
void timerthread_init(struct timerthread *, unsigned int, void (*)(void *));
void timerthread_free(struct timerthread *);
void timerthread_launch(struct timerthread *, const char *scheduler, int prio, const char *name);
void timerthread_obj_schedule_abs_nl(struct timerthread_obj *, const int64_t);
void timerthread_obj_deschedule(struct timerthread_obj *);
// run_now_func = called if newly inserted object can be processed immediately by timerthread_queue_push within its calling context
// run_later_func = called from the separate timer thread
void *timerthread_queue_new(const char *type, size_t size,
struct timerthread *tt,
void (*run_now_func)(struct timerthread_queue *, void *),
void (*run_later_func)(struct timerthread_queue *, void *), // optional
void (*free_func)(void *),
void (*entry_free_func)(void *));
void timerthread_queue_run(void *ptr);
void timerthread_queue_flush_data(void *ptr);
void timerthread_queue_push(struct timerthread_queue *, struct timerthread_queue_entry *);
unsigned int timerthread_queue_flush(struct timerthread_queue *, void *);
INLINE struct timerthread_thread *timerthread_get_next(struct timerthread *tt) {
unsigned int idx = g_atomic_int_add(&tt->thread_idx, 1);
idx = idx % tt->num_threads; // XXX check perf without %
return &tt->threads[idx];
}
INLINE void timerthread_obj_schedule_abs(struct timerthread_obj *tt_obj, const int64_t tv) {
if (!tt_obj)
return;
struct timerthread_thread *tt = tt_obj->thread;
if (!tt) {
tt = timerthread_get_next(tt_obj->tt);
g_atomic_pointer_compare_and_exchange(&tt_obj->thread, NULL, tt);
}
tt = tt_obj->thread;
mutex_lock(&tt->lock);
timerthread_obj_schedule_abs_nl(tt_obj, tv);
mutex_unlock(&tt->lock);
}
#endif
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