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23 lines
445 B
C++
23 lines
445 B
C++
#include <boost/thread/mutex.hpp>
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#include <boost/thread/thread.hpp>
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#include <iostream>
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boost::mutex mutex;
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int counter=0;
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void change_count()
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{
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boost::mutex::scoped_lock lock(mutex);
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int i = ++counter;
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std::cout << "count == " << i << std::endl;
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}
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int main()
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{
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const int num_threads = 4;
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boost::thread_group thrds;
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for (int i=0; i < num_threads; ++i)
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thrds.create_thread(&change_count);
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thrds.join_all();
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}
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