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52 lines
892 B
52 lines
892 B
#pragma once
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#include <condition_variable>
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#include <mutex>
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#include <queue>
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template <class T>
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class SafeQueue {
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public:
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SafeQueue() = default;
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void push(const T& v) {
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{
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std::unique_lock lk(m);
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q.push(v);
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}
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cv.notify_one();
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}
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T pop() {
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std::unique_lock lk(m);
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cv.wait(lk, [this] { return !q.empty(); });
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T v = q.front();
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q.pop();
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return v;
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}
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bool try_pop(T& v, int timeout_ms = 0) {
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std::unique_lock lk(m);
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if (!cv.wait_for(lk, std::chrono::milliseconds(timeout_ms), [this] { return !q.empty(); })) {
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return false;
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}
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v = q.front();
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q.pop();
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return true;
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}
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bool empty() const {
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std::scoped_lock lk(m);
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return q.empty();
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}
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size_t size() const {
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std::scoped_lock lk(m);
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return q.size();
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}
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private:
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mutable std::mutex m;
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std::condition_variable cv;
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std::queue<T> q;
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};
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