64 lines
1.0 KiB
C++
64 lines
1.0 KiB
C++
#include <exception>
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#include <iostream>
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#include <memory>
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#include <mutex>
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#include <stack>
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#include <thread>
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template <typename T>
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class stack {
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private:
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std::stack<T> data;
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mutable std::mutex m;
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public:
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stack() {}
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stack(const stack& other)
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{
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std::lock_guard<std::mutex> lock(other.m);
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data = other.data;
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}
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stack& operator=(const stack&) = delete;
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void push(T new_value)
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{
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std::lock_guard<std::mutex> lock(m);
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data.push(new_value);
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}
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std::shared_ptr<T> pop()
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{
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std::lock_guard<std::mutex> lock(m);
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if (data.empty())
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throw std::underflow_error("empty stack");
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std::shared_ptr<T> const res(new T(data.top()));
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data.pop();
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return res;
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}
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void pop(T& value)
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{
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std::lock_guard<std::mutex> lock(m);
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if (data.empty())
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throw std::underflow_error("empty stack");
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value = data.top();
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data.pop();
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}
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bool empty() const
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{
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std::lock_guard<std::mutex> lock(m);
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return data.empty();
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}
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};
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int
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main()
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{
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stack<int> s;
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s.push(1);
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std::cout << *s.pop() << std::endl;
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}
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