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Remove timeout support from lf_queue::wait

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Add notify method and use atomic wait
This commit is contained in:
Nekotekina 2019-09-09 00:55:48 +03:00
parent faba366f89
commit b91661ae71
3 changed files with 21 additions and 46 deletions
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28
Utilities/lockless.h
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@ -315,12 +315,6 @@ class lf_queue_base
{
protected:
atomic_t<std::uintptr_t> m_head = 0;
void imp_notify();
public:
// Wait for new elements pushed, no other thread shall call wait() or pop_all() simultaneously
bool wait(u64 usec_timeout = -1);
};
// Linked list-based multi-producer queue (the consumer drains the whole queue at once)
@ -361,20 +355,28 @@ public:
delete reinterpret_cast<lf_queue_item<T>*>(m_head.load());
}
void wait() noexcept
{
while (m_head == 0)
{
m_head.wait(0);
}
}
void notify() noexcept
{
m_head.notify_one();
}
template <typename... Args>
void push(Args&&... args)
{
auto _old = m_head.load();
auto* item = new lf_queue_item<T>(_old & 1 ? nullptr : reinterpret_cast<lf_queue_item<T>*>(_old), std::forward<Args>(args)...);
auto* item = new lf_queue_item<T>(reinterpret_cast<lf_queue_item<T>*>(_old), std::forward<Args>(args)...);
while (!m_head.compare_exchange(_old, reinterpret_cast<std::uint64_t>(item)))
{
item->m_link = _old & 1 ? nullptr : reinterpret_cast<lf_queue_item<T>*>(_old);
}
if (_old & 1)
{
lf_queue_base::imp_notify();
item->m_link = reinterpret_cast<lf_queue_item<T>*>(_old);
}
}