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/*
*
*/
#pragma once
#include <deque>
#include <atomic>
namespace de {
class LockManager {
public:
LockManager(size_t levels=1) {
for (size_t i=0; i < levels; i++) {
m_lks.emplace_back(false);
}
}
~LockManager() = default;
void add_lock() {
m_lks.emplace_back(false);
}
void release_lock(size_t idx) {
if (idx < m_lks.size()) {
m_lks[idx].store(false);
}
}
bool is_locked(size_t idx) {
if (idx < m_lks.size()) {
return m_lks[idx].load();
}
return false;
}
bool take_lock(size_t idx) {
if (idx < m_lks.size()) {
bool old = m_lks[idx].load();
if (!old) {
return m_lks[idx].compare_exchange_strong(old, true);
}
}
return false;
}
private:
std::deque<std::atomic<bool>> m_lks;
};
}
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