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Initial support for HLE in internal API

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atomic_storage<>: add compare_exchange_hle_acq and fetch_add_hle_rel
shared_mutex: add methods (un)lock_hle and (un)lock_shared_hle
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This commit is contained in:
Nekotekina 2019-01-29 03:29:31 +03:00
parent 58358e85dd
commit f50d9cc136
2 changed files with 95 additions and 0 deletions
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46
Utilities/mutex.h
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@ -46,6 +46,22 @@ public:
}
}
void lock_shared_hle()
{
const u32 value = m_value.load();
if (LIKELY(value < c_one - 1))
{
u32 old = value;
if (LIKELY(atomic_storage<u32>::compare_exchange_hle_acq(m_value.raw(), old, value + 1)))
{
return;
}
}
imp_lock_shared(value);
}
void unlock_shared()
{
// Unconditional decrement (can result in broken state)
@ -57,6 +73,16 @@ public:
}
}
void unlock_shared_hle()
{
const u32 value = atomic_storage<u32>::fetch_add_hle_rel(m_value.raw(), -1);
if (UNLIKELY(value >= c_one))
{
imp_unlock_shared(value);
}
}
bool try_lock()
{
return m_value.compare_and_swap_test(0, c_one);
@ -72,6 +98,16 @@ public:
}
}
void lock_hle()
{
u32 value = 0;
if (UNLIKELY(!atomic_storage<u32>::compare_exchange_hle_acq(m_value.raw(), value, c_one)))
{
imp_lock(value);
}
}
void unlock()
{
// Unconditional decrement (can result in broken state)
@ -83,6 +119,16 @@ public:
}
}
void unlock_hle()
{
const u32 value = atomic_storage<u32>::fetch_add_hle_rel(m_value.raw(), -c_one);
if (UNLIKELY(value != c_one))
{
imp_unlock(value);
}
}
bool try_lock_upgrade()
{
const u32 value = m_value.load();