void run()
{
using ThreadSupport::Scheduler;
std::cout << "Begin!" << std::endl;
// create scheduler on the stack
Scheduler s;
std::vector<std::future<void>> futures;
// schedule a number of taskes with timeouts
for (int i = 1; i != 33; ++i)
{
int ms = i*i;
try {
futures.push_back(s.schedule([=]{ std::cout << "ms: " << ms << std::endl; }, ms));
}
catch (std::system_error& e) {
std::string msg = e.what();
s.dispatch([=,&s]{std::cout << "Scheduling task " << i << " (" << ms << ") failed because: " << msg << " (This is Coliru! Let's wait a little.)" << std::endl;});
if (!futures.empty())
{
futures.back().wait();
futures.pop_back();
}
}
}
std::cout << "End of scope reached. Joining..." << std::endl;
}
void* Scheduler::_thread_proc(void* arg)
{
Scheduler* sched = (Scheduler*)arg;
while (sched->_dispatcher_thread_running)
sched->dispatch();
return 0;
}
void test_scheduler() {
Scheduler sch;
// Initialize a queue of
PCB pcb[5];
for (int i=0; i < 5; i++)
sch.sm.new_state.push_back(pcb[i]);
cout << "Initial PCBs in new state: " << sch.get_new_state().size()<<endl;
iterate_state(sch.get_new_state());
// Move the first PCB from the new state and add it to the ready state
// it = sm.new_state.begin();
// sm.new_state.splice(it, sm.ready_state);
// sm.ready_state.splice(sm.ready_state.begin(), sm.new_state, it);
// sch.sm.new_to_ready();
// sch.dispatch();
// sch.dispatch();
// sch.sm.new_to_ready();
// cout << "PCBs in new state" <<endl;
// iterate_state(sch.get_new_state());
//
// cout << "PCBs in ready state" <<endl;
// iterate_state(sch.get_ready_state());
//
// cout << "Process state is: " << sch.get_ready_state().front().get_state()<<endl;
// sch.dispatch();
// cout << "Run state: " << sch.get_run_state().get_state()<<endl;
// sch.terminate();
// cout << "Runtime: " << sch.get_runtime()<<endl;
// iterate_state(sch.get_exit_state());
// cout << sch.get_ram()<<endl;
sch.admit();
sch.admit();
sch.admit();
cout << "Ready State"<<endl;
iterate_state(sch.get_ready_state());
sch.dispatch();
cout << "Run State"<<endl;
cout << sch.get_run_state().get_pid()<<endl;
sch.terminate();
cout << sch.get_run_state().get_pid()<<endl;
};
int main() {
ProcessGenerator pgen;
pgen.io_at(100,5);
for (list<int>::iterator it = pgen.ioArrivalTime_list.begin();
pgen.ioArrivalTime_list.end(); it++) {
cout << (*it)<<endl;
}
// OS startup
// Run process generator
// Read from input file
// Create an array
// Begin creating processes and loading them in new state
// Allocate memory for the 1st process and move to ready state
// Scheduler decides which process to run, moves process to run state
// Dispatcher decides when to move pcbs to exit, blocked, or ready
// Move pcb to ready if there is enough memory for it
// Move process to run
// Execute process until a timeslice ends, IO occurs, or ends
// Move process accordingly
// x = false;
// toggle();
// cout<<x<<endl;
// toggle();
// cout<<x<<endl;
// if (!x) {
// cout<<"Not on"<<endl;
// cout<<x<<endl;
// }
Scheduler sch;
PCB pcb,pcb2,pcb3,pcb4,pcb5;
// pcb.set_id();
// pcb2.set_id();
// pcb3.set_id();
pcb.set_cpu_arrival(0);
pcb2.set_cpu_arrival(3);
pcb3.set_cpu_arrival(6);
pcb4.set_cpu_arrival(8);
pcb5.set_cpu_arrival(12);
pcb.set_cpu_required(5);
pcb2.set_cpu_required(6);
pcb3.set_cpu_required(4);
pcb4.set_cpu_required(3);
pcb5.set_cpu_required(15);
pcb.set_io_required(2);
pcb2.set_io_required(0);
pcb3.set_io_required(3);
pcb4.set_io_required(5);
pcb5.set_io_required(3);
pcb.set_io_arrival(1);
pcb.set_io_arrival(3);
pcb3.set_io_arrival(1);
pcb3.set_io_arrival(3);
pcb3.set_io_arrival(2);
pcb4.set_io_arrival(4);
pcb4.set_io_arrival(2);
pcb4.set_io_arrival(5);
pcb4.set_io_arrival(4);
pcb4.set_io_arrival(3);
pcb5.set_io_arrival(2);
pcb5.set_io_arrival(4);
pcb5.set_io_arrival(5);
pcb.set_io_wait(5);
pcb.set_io_wait(1);
pcb3.set_io_wait(2);
pcb3.set_io_wait(4);
pcb3.set_io_wait(2);
pcb4.set_io_wait(2);
pcb4.set_io_wait(3);
pcb4.set_io_wait(4);
pcb4.set_io_wait(2);
pcb4.set_io_wait(2);
pcb5.set_io_wait(4);
pcb5.set_io_wait(3);
pcb5.set_io_wait(1);
pcb.set_memory(4);
pcb2.set_memory(6);
pcb3.set_memory(8);
pcb4.set_memory(12);
pcb5.set_memory(6);
sch.sm.null_state.push_back(pcb);
sch.sm.null_state.push_back(pcb2);
sch.sm.null_state.push_back(pcb3);
sch.sm.null_state.push_back(pcb4);
sch.sm.null_state.push_back(pcb5);
iterate_state(sch.sm.null_state);
int end = sch.sm.null_state.size();
cout<<"End: "<<end<<endl;
bool is_processing = true;
// cout << "True is " << true<<endl;
// cout << "Init Run State: "<< sch.sm.run_state.get_state().compare("Run")<<endl;
// cout << "Init Run ID: "<< sch.sm.run_state.get_pid()<<endl;
// WORKING FOR LOOP
// for (sch.get_clock(); sch.get_clock() < 25; sch.increase_clock()) {
while(is_processing) {
sch.admit();
sch.allocate();
sch.dispatch();
if(!sch.get_exit_state().empty() && sch.get_exit_state().size()==end) {
cout<<"Finished"<<endl;
is_processing = false;
}
sch.increase_clock();
// iterate_state(sch.get_new_state());
}
// cout << "PCB: " << pcb.get_pid()<<endl;
// cout << "PCB2: " << pcb2.get_pid()<<endl;
// cout << "PCB: " << pcb.get_cpu_arrival()<<endl;
// cout<<"PCB "<<pcb.get_cpu_pending()<<endl;
// sch.sm.run_state = pcb;
// sch.sm.run_state.consume_cpu();
// cout<<"PCB 1 "<<sch.sm.get_run_state().get_cpu_pending()<<endl;
// cout<<"IO PCB1"<<endl;
// cout<<pcb.get_wait()<<endl;
// pcb.consume_io();
// cout<<pcb.get_wait()<<endl;
// sch.sm.blocked_state.push_back(pcb);
// sch.sm.blocked_state.push_back(pcb2);
// sch.sm.blocked_state.push_back(pcb3);
// sch.sm.new_state.pop_front();
// iterate_state(sch.get_blocked_state());
// for (list<PCB>::iterator it = sch.sm.blocked_state.begin();
// it != sch.sm.blocked_state.end(); it++) {
// if ((*it).get_wait() == 0)
// it = sch.sm.blocked_state.erase(it);
//
// }
// sch.sm.new_state.front().io.m_io_wait.remove_if(wait_complete);
// sch.sm.new_state.remove(is_done);
// cout<<"Remove if IO wait is 0"<<endl;
// iterate_state(sch.get_blocked_state());
// list<PCB> null;
// sch.sm.null_state.push_back(pcb);
// sch.sm.null_state.push_back(pcb2);
// iterate_state(null);
// while(sch.get_clock() < 1500) {
// cout<<"Clock cylce: "<<sch.get_clock()<<endl;
// cout<<"Ram: "<<sch.get_ram()<<endl;
// cout<<"State: "<<sch.get_ready_state().empty()<<endl;
// sch.admit();
// sch.allocate();
//
//// sch.dispatch();
// sch.increase_clock();
// }
// sch.sm.new_state.push_back(pcb);
// sch.sm.new_state.push_back(pcb2);
// iterate_state(sch.get_new_state());
// while(!sch.get_new_state().empty()) {
// sch.admit();
// sch.increase_clock();
// }
// sch.admit();
// sch.admit();
// iterate_state(sch.get_ready_state());
// cout << "Ram: " << sch.get_ram()<<endl;
// sch.display_ram();
// sch.dispatch();
// sch.dispatch();
// cout << "RUN PID: " << sch.get_run_state().get_pid()<<endl;
// cout<<" RunTime: " << sch.get_runtime()<<endl;
// State
// ProcessGenerator pgen;
//
// srand(time(0));
// pgen.io_at(100,5);
// for (list<int>::iterator it = pgen.IO_list.begin();
// it !=pgen.IO_list.end();it++){
// cout<<(*it)<<endl;
// }
}