75 lines
1.8 KiB
C++
75 lines
1.8 KiB
C++
#include <thread>
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#include <atomic>
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#include <iostream>
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std::atomic<int> x(0),y(0),z(0);
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std::atomic<bool> go(false);
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unsigned const loop_count=10;
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struct read_values
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{
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int x,y,z;
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};
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read_values values1[loop_count];
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read_values values2[loop_count];
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read_values values3[loop_count];
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read_values values4[loop_count];
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read_values values5[loop_count];
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void increment(std::atomic<int>* var_to_inc,read_values* values)
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{
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while(!go)
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std::this_thread::yield();
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for(unsigned i=0;i<loop_count;++i)
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{
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values[i].x=x.load(std::memory_order_relaxed);
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values[i].y=y.load(std::memory_order_relaxed);
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values[i].z=z.load(std::memory_order_relaxed);
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var_to_inc->store(i+1,std::memory_order_relaxed);
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std::this_thread::yield();
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}
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}
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void read_vals(read_values* values)
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{
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while(!go)
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std::this_thread::yield();
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for(unsigned i=0;i<loop_count;++i)
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{
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values[i].x=x.load(std::memory_order_relaxed);
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values[i].y=y.load(std::memory_order_relaxed);
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values[i].z=z.load(std::memory_order_relaxed);
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std::this_thread::yield();
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}
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}
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void print(read_values* v)
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{
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for(unsigned i=0;i<loop_count;++i)
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{
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if(i)
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std::cout<<",";
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std::cout<<"("<<v[i].x<<","<<v[i].y<<","<<v[i].z<<")";
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}
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std::cout<<std::endl;
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}
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int main()
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{
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std::thread t1(increment,&x,values1);
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std::thread t2(increment,&y,values2);
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std::thread t3(increment,&z,values3);
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std::thread t4(read_vals,values4);
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std::thread t5(read_vals,values5);
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go=true;
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t5.join();
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t4.join();
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t3.join();
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t2.join();
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t1.join();
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print(values1);
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print(values2);
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print(values3);
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print(values4);
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print(values5);
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}
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