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Add cond_variable::wait_unlock

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This commit is contained in:
Nekotekina 2018-10-02 17:50:22 +03:00
parent 4bef0f8dab
commit bc87c5808c
2 changed files with 11 additions and 18 deletions
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19
Utilities/Thread.cpp
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@ -1736,22 +1736,6 @@ bool thread_ctrl::_wait_for(u64 usec)
{
auto _this = g_tls_this_thread;
struct half_lock
{
shared_mutex& ref;
void lock()
{
// Used to avoid additional lock + unlock
}
void unlock()
{
ref.unlock();
}
}
_lock{_this->m_mutex};
do
{
// Mutex is unlocked at the start and after the waiting
@ -1772,7 +1756,6 @@ bool thread_ctrl::_wait_for(u64 usec)
return false;
}
// Lock (semaphore)
_this->m_mutex.lock();
// Double-check the value
@ -1791,7 +1774,7 @@ bool thread_ctrl::_wait_for(u64 usec)
}
}
}
while (_this->m_cond.wait(_lock, std::exchange(usec, usec > cond_variable::max_timeout ? -1 : 0)));
while (_this->m_cond.wait_unlock(std::exchange(usec, usec > cond_variable::max_timeout ? -1 : 0), _this->m_mutex));
// Timeout
return false;