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add ajust stats to compensate for double counting

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This commit is contained in:
daanx 2024-12-17 17:53:34 -08:00
parent c2e0aa49c4
commit 617190880d
2 changed files with 42 additions and 4 deletions
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31
src/stats.c
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@ -26,7 +26,7 @@ static bool mi_is_in_main(void* stat) {
static void mi_stat_update(mi_stat_count_t* stat, int64_t amount) {
if (amount == 0) return;
if (mi_is_in_main(stat))
if mi_unlikely(mi_is_in_main(stat))
{
// add atomically (for abandoned pages)
int64_t current = mi_atomic_addi64_relaxed(&stat->current, amount);
@ -51,6 +51,27 @@ static void mi_stat_update(mi_stat_count_t* stat, int64_t amount) {
}
}
// Adjust stats to compensate; for example before committing a range,
// first adjust downwards with parts that were already committed so
// we avoid double counting.
static void mi_stat_adjust(mi_stat_count_t* stat, int64_t amount) {
if (amount == 0) return;
if mi_unlikely(mi_is_in_main(stat))
{
// adjust atomically
mi_atomic_addi64_relaxed(&stat->current, amount);
mi_atomic_addi64_relaxed(&stat->allocated, amount);
mi_atomic_addi64_relaxed(&stat->freed, amount);
}
else {
// don't affect the peak
stat->current += amount;
// add to both
stat->allocated += amount;
stat->freed += amount;
}
}
void _mi_stat_counter_increase(mi_stat_counter_t* stat, size_t amount) {
if (mi_is_in_main(stat)) {
mi_atomic_addi64_relaxed( &stat->count, 1 );
@ -70,6 +91,14 @@ void _mi_stat_decrease(mi_stat_count_t* stat, size_t amount) {
mi_stat_update(stat, -((int64_t)amount));
}
void _mi_stat_adjust_increase(mi_stat_count_t* stat, size_t amount) {
mi_stat_adjust(stat, (int64_t)amount);
}
void _mi_stat_adjust_decrease(mi_stat_count_t* stat, size_t amount) {
mi_stat_adjust(stat, -((int64_t)amount));
}
// must be thread safe as it is called from stats_merge
static void mi_stat_add(mi_stat_count_t* stat, const mi_stat_count_t* src, int64_t unit) {
if (stat==src) return;