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#ifndef JEMALLOC_INTERNAL_TICKER_H
#define JEMALLOC_INTERNAL_TICKER_H
#include "jemalloc/internal/util.h"
/**
* A ticker makes it easy to count-down events until some limit. You
* ticker_init the ticker to trigger every nticks events. You then notify it
* that an event has occurred with calls to ticker_tick (or that nticks events
* have occurred with a call to ticker_ticks), which will return true (and reset
* the counter) if the countdown hit zero.
*/
typedef struct {
int32_t tick;
int32_t nticks;
} ticker_t;
static inline void
ticker_init(ticker_t *ticker, int32_t nticks) {
ticker->tick = nticks;
ticker->nticks = nticks;
}
static inline void
ticker_copy(ticker_t *ticker, const ticker_t *other) {
*ticker = *other;
}
static inline int32_t
ticker_read(const ticker_t *ticker) {
return ticker->tick;
}
static inline bool
ticker_ticks(ticker_t *ticker, int32_t nticks) {
if (unlikely(ticker->tick < nticks)) {
ticker->tick = ticker->nticks;
return true;
}
ticker->tick -= nticks;
return(false);
}
static inline bool
ticker_tick(ticker_t *ticker) {
return ticker_ticks(ticker, 1);
}
#endif /* JEMALLOC_INTERNAL_TICKER_H */
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