Created
March 11, 2019 02:55
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C++ program that simulates a race condition on a shared resource (print to stdout).
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#include <iostream> | |
#include <thread> | |
#include <mutex> | |
using namespace std; | |
// mutex used to lock other threads from gaining access to shared resource | |
mutex m_mutex; | |
// shared print function for cout | |
void shared_print(char c, int v) { | |
//m_mutex.lock(); // locks other threads from using resource, uncomment to see ipc sequence complications | |
cout << c << v << "\n"; | |
//m_mutex.unlock(); // unlocks resource so that another thread can have access, uncomment to see ipc sequence complications | |
} | |
// function for sequence | |
void foo(char d, int a) { | |
for (int i = 1; i <= a; i++) { | |
shared_print(d, i); | |
} | |
} | |
int main() | |
{ | |
thread th2(foo, 'A', 10); // child thread - 1 | |
thread th3(foo, 'B', 10); // child thread - 2 | |
thread th4(foo, 'C', 10); // child thread - 3 | |
th2.join(); // main thread, waits for child to finish | |
th3.join(); // main thread, waits for child to finish | |
th4.join(); // main thread, waits for child to finish | |
return 0; | |
} |
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