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New approximation for merged peak stats #1112

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New approximation for merged peak stats #1112

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9 changes: 7 additions & 2 deletions src/stats.c
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Original file line number Diff line number Diff line change
Expand Up @@ -86,11 +86,16 @@ void _mi_stat_adjust_decrease(mi_stat_count_t* stat, size_t amount) {
static void mi_stat_count_add_mt(mi_stat_count_t* stat, const mi_stat_count_t* src) {
if (stat==src) return;
mi_atomic_void_addi64_relaxed(&stat->total, &src->total);
mi_atomic_void_addi64_relaxed(&stat->current, &src->current);

int64_t prev_current = mi_atomic_addi64_relaxed(&stat->current, src->current);

// peak scores do really not work across threads .. we just add them
mi_atomic_void_addi64_relaxed( &stat->peak, &src->peak);
//mi_atomic_void_addi64_relaxed( &stat->peak, &src->peak);
// or, take the max?
// mi_atomic_maxi64_relaxed(&stat->peak, src->peak);

// global current plus thread peak approximates new global peak
mi_atomic_maxi64_relaxed(&stat->peak, prev_current + src->peak);
}

static void mi_stat_counter_add_mt(mi_stat_counter_t* stat, const mi_stat_counter_t* src) {
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