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