Method pop

tests/unittests/unittests.cpp:396–437

	}
	
	bool pop()
	{
		weak_atomic<int> result;
		result = 1;
		
		ReaderWriterQueue<int> q(100);
		SimpleThread reader([&]() {
			int item;
			int prevItem = -1;
			int* peeked;
			for (int i = 0; i != 100000; ++i) {
				peeked = q.peek();
				if (peeked != nullptr) {
					item = *peeked;
					if (q.pop()) {
						if (item <= prevItem) {
							result = 0;
						}
						prevItem = item;
					}
					else {
						result = 0;
					}
				}
			}
		});
		SimpleThread writer([&]() {
			for (int i = 0; i != 100000; ++i) {
				if (((i >> 7) & 1) == 0) {
					q.enqueue(i);
				}
				else {
					q.try_enqueue(i);
				}
			}
		});
		
		writer.join();
		reader.join();
		
		return result.load() == 1 ? true : false;
	}
	
	bool size_approx()
	{