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Reduce stack usage in atomic_wait_engine::notify_all

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Nekotekina 2022-04-24 13:26:28 +03:00
parent 6d3052c5dd
commit cd6aa0774f
1 changed files with 9 additions and 2 deletions
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11
rpcs3/util/atomic.cpp
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@ -1335,13 +1335,20 @@ SAFE_BUFFERS(void) atomic_wait_engine::notify_all(const void* data, u32 size, u1
u32 count = 0; u32 count = 0;
// Array itself. // Array itself.
u32 cond_ids[max_threads * max_distance + 128]; u32 cond_ids[128];
root_info::slot_search(iptr, mask, [&](u32 cond_id) root_info::slot_search(iptr, mask, [&](u32 cond_id)
{ {
if (count >= 128)
{
// Unusual big amount of sema: fallback to notify_one alg
alert_sema(cond_id, size, mask);
return false;
}
u32 res = alert_sema<true>(cond_id, size, mask); u32 res = alert_sema<true>(cond_id, size, mask);
if (res && ~res <= u16{umax}) if (~res <= u16{umax})
{ {
// Add to the end of the "stack" // Add to the end of the "stack"
*(std::end(cond_ids) - ++count) = ~res; *(std::end(cond_ids) - ++count) = ~res;