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lecture-operating-system-de…/c_os/user/PreemptiveThreadDemo.cc
2022-07-11 15:37:45 +02:00

25 lines
920 B
C++

#include "user/PreemptiveThreadDemo.h"
#include "lib/Semaphore.h"
void PreemptiveThreadDemo::run() {
kout << "PreemptiveThreadDemo ====================================" << endl;
kout << "Initializing Semaphore" << endl;
Semaphore* sem = new Semaphore(1); // Create this semaphore on the heap as this thread exits itself,
// so stack allocated objects will be lost
kout << "Allocating LoopThread A" << endl;
Thread* cntA = new PreemptiveLoopThread(0, sem);
kout << "Allocating LoopThread B" << endl;
Thread* cntB = new PreemptiveLoopThread(1, sem);
kout << "Allocating LoopThread C" << endl;
Thread* cntC = new PreemptiveLoopThread(2, sem);
kout << "Adding threads to ready queue" << endl;
scheduler.ready(cntA);
scheduler.ready(cntB);
scheduler.ready(cntC);
kout << "Exiting main thread" << endl;
scheduler.exit();
}