9998000b2b
Implement ticker, which provides a simple API for ticking off some number of events before indicating that the ticker has hit its limit.
76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
/******************************************************************************/
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#ifdef JEMALLOC_H_TYPES
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typedef struct ticker_s ticker_t;
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#endif /* JEMALLOC_H_TYPES */
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/******************************************************************************/
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#ifdef JEMALLOC_H_STRUCTS
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struct ticker_s {
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int32_t tick;
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int32_t nticks;
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};
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#endif /* JEMALLOC_H_STRUCTS */
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/******************************************************************************/
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#ifdef JEMALLOC_H_EXTERNS
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#endif /* JEMALLOC_H_EXTERNS */
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/******************************************************************************/
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#ifdef JEMALLOC_H_INLINES
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#ifndef JEMALLOC_ENABLE_INLINE
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void ticker_init(ticker_t *ticker, int32_t nticks);
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void ticker_copy(ticker_t *ticker, const ticker_t *other);
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int32_t ticker_read(const ticker_t *ticker);
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bool ticker_ticks(ticker_t *ticker, int32_t nticks);
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bool ticker_tick(ticker_t *ticker);
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#endif
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#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_TICKER_C_))
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JEMALLOC_INLINE void
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ticker_init(ticker_t *ticker, int32_t nticks)
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{
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ticker->tick = nticks;
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ticker->nticks = nticks;
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}
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JEMALLOC_INLINE void
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ticker_copy(ticker_t *ticker, const ticker_t *other)
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{
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*ticker = *other;
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}
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JEMALLOC_INLINE int32_t
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ticker_read(const ticker_t *ticker)
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{
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return (ticker->tick);
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}
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JEMALLOC_INLINE bool
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ticker_ticks(ticker_t *ticker, int32_t nticks)
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{
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if (unlikely(ticker->tick < nticks)) {
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ticker->tick = ticker->nticks;
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return (true);
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}
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ticker->tick -= nticks;
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return(false);
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}
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JEMALLOC_INLINE bool
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ticker_tick(ticker_t *ticker)
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{
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return (ticker_ticks(ticker, 1));
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}
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#endif
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#endif /* JEMALLOC_H_INLINES */
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/******************************************************************************/
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