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sys_event_queue...

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This commit is contained in:
Nekotekina 2017-02-04 00:36:04 +03:00
parent 26ced19e18
commit 6537909fd2
13 changed files with 299 additions and 370 deletions
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81
Utilities/SleepQueue.h
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@ -1,81 +0,0 @@
#pragma once
#include <deque>
// Tag used in sleep_entry<> constructor
static struct defer_sleep_tag {} constexpr defer_sleep{};
// Define sleep queue as std::deque with T* pointers, T - thread type
template<typename T> using sleep_queue = std::deque<T*>;
// Automatic object handling a thread pointer (T*) in the sleep queue
// Sleep queue is actually std::deque with pointers, be careful about the lifetime
template<typename T>
class sleep_entry final
{
sleep_queue<T>& m_queue;
T& m_thread;
public:
// Constructor; enter() not called
sleep_entry(sleep_queue<T>& queue, T& entry, const defer_sleep_tag&)
: m_queue(queue)
, m_thread(entry)
{
}
// Constructor; calls enter()
sleep_entry(sleep_queue<T>& queue, T& entry)
: sleep_entry(queue, entry, defer_sleep)
{
enter();
}
// Destructor; calls leave()
~sleep_entry()
{
leave();
}
// Add thread to the sleep queue
void enter()
{
for (auto t : m_queue)
{
if (t == &m_thread)
{
// Already exists, is it an error?
return;
}
}
m_queue.emplace_back(&m_thread);
}
// Remove thread from the sleep queue
void leave()
{
for (auto it = m_queue.begin(), end = m_queue.end(); it != end; it++)
{
if (*it == &m_thread)
{
m_queue.erase(it);
return;
}
}
}
// Check whether the thread exists in the sleep queue
explicit operator bool() const
{
for (auto it = m_queue.begin(), end = m_queue.end(); it != end; it++)
{
if (*it == &m_thread)
{
return true;
}
}
return false;
}
};