38 lines
969 B
C
38 lines
969 B
C
#ifndef JEMALLOC_INTERNAL_PEAK_H
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#define JEMALLOC_INTERNAL_PEAK_H
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typedef struct peak_s peak_t;
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struct peak_s {
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/* The highest recorded peak value, after adjustment (see below). */
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uint64_t cur_max;
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/*
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* The difference between alloc and dalloc at the last set_zero call;
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* this lets us cancel out the appropriate amount of excess.
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*/
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uint64_t adjustment;
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};
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#define PEAK_INITIALIZER {0, 0}
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static inline uint64_t
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peak_max(peak_t *peak) {
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return peak->cur_max;
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}
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static inline void
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peak_update(peak_t *peak, uint64_t alloc, uint64_t dalloc) {
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int64_t candidate_max = (int64_t)(alloc - dalloc - peak->adjustment);
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if (candidate_max > (int64_t)peak->cur_max) {
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peak->cur_max = candidate_max;
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}
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}
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/* Resets the counter to zero; all peaks are now relative to this point. */
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static inline void
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peak_set_zero(peak_t *peak, uint64_t alloc, uint64_t dalloc) {
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peak->cur_max = 0;
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peak->adjustment = alloc - dalloc;
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}
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#endif /* JEMALLOC_INTERNAL_PEAK_H */
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