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Update interrupts.cpp #1

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99 changes: 93 additions & 6 deletions interrupts.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -49,7 +49,34 @@ std::tuple<std::string, std::string, int> simulate_trace(std::vector<std::string
current_time = time;

///////////////////////////////////////////////////////////////////////////////////////////
//Add your FORK output here
execution += std::to_string(current_time) + ", 1, switch to kernel mode //fork encountered, "
+ std::to_string(wait_queue.size() + 1) + " processes in PCB\n";
current_time += 1;

execution += std::to_string(current_time) + ", 10, context saved\n";
current_time += 10;

execution += std::to_string(current_time) + ", 1, find vector 2 in memory position 0x0004\n";
current_time += 1;

execution += std::to_string(current_time) + ", 1, load address 0X0695 into the PC\n";
current_time += 1;

execution += std::to_string(current_time) + ", 17, cloning the PCB\n";
current_time += 17;

execution += std::to_string(current_time) + ", 0, scheduler called\n";
execution += std::to_string(current_time) + ", 1, IRET\n";
current_time += 1;

// Create child PCB and put parent in wait queue
PCB child(current.PID + 1, current.PID, current.program_name, current.size, current.partition_number);
wait_queue.push_back(current); // parent goes to wait queue
current = child; // child runs immediately

// Snapshot system status
system_status += print_PCB(current, wait_queue);




Expand Down Expand Up @@ -90,7 +117,15 @@ std::tuple<std::string, std::string, int> simulate_trace(std::vector<std::string
i = parent_index;

///////////////////////////////////////////////////////////////////////////////////////////
//With the child's trace, run the child (HINT: think recursion)
auto [child_exec, child_status, child_time] = simulate_trace(child_trace, current_time, vectors, delays, external_files, current, wait_queue);
execution += child_exec;
system_status += child_status;
current_time = child_time;

// After child finishes, restore parent
current = wait_queue.back();
wait_queue.pop_back();




Expand All @@ -103,8 +138,43 @@ std::tuple<std::string, std::string, int> simulate_trace(std::vector<std::string
execution += intr;

///////////////////////////////////////////////////////////////////////////////////////////
//Add your EXEC output here

// EXEC ISR: load new program into memory and log
execution += std::to_string(current_time) + ", 1, switch to kernel mode //exec encountered\n";
current_time += 1;

execution += std::to_string(current_time) + ", 10, context saved\n";
current_time += 10;

execution += std::to_string(current_time) + ", 1, find vector 3 in memory position 0x0006\n";
current_time += 1;

execution += std::to_string(current_time) + ", 1, load address 0X042B into the PC\n";
current_time += 1;

unsigned int prog_size = get_size(program_name, external_files);
current.program_name = program_name;
current.size = prog_size;

execution += std::to_string(current_time) + ", " + std::to_string(duration_intr) + ", Program is " + std::to_string(prog_size) + " Mb large\n";
current_time += duration_intr;

execution += std::to_string(current_time) + ", " + std::to_string(prog_size * 15) + ", loading program into memory\n";
current_time += prog_size * 15;

execution += std::to_string(current_time) + ", 3, marking partition as occupied\n";
current_time += 3;

execution += std::to_string(current_time) + ", 6, updating PCB\n";
current_time += 6;

execution += std::to_string(current_time) + ", 0, scheduler called\n";
execution += std::to_string(current_time) + ", 1, IRET\n";
current_time += 1;

// Snapshot PCB
system_status += print_PCB(current, wait_queue);




///////////////////////////////////////////////////////////////////////////////////////////
Expand All @@ -119,7 +189,24 @@ std::tuple<std::string, std::string, int> simulate_trace(std::vector<std::string
}

///////////////////////////////////////////////////////////////////////////////////////////
//With the exec's trace (i.e. trace of external program), run the exec (HINT: think recursion)
// Run child or external program recursively
std::ifstream prog_file(program_name + ".txt");
std::vector<std::string> prog_traces;
std::string line;
while (std::getline(prog_file, line)) prog_traces.push_back(line);

auto [prog_exec, prog_status, prog_time] = simulate_trace(prog_traces, current_time, vectors, delays, external_files, current, wait_queue);

execution += prog_exec;
system_status += prog_status;
current_time = prog_time;

// After child finishes, restore parent if needed
if (!wait_queue.empty()) {
current = wait_queue.back();
wait_queue.pop_back();
}




Expand Down Expand Up @@ -156,7 +243,7 @@ int main(int argc, char** argv) {
std::vector<PCB> wait_queue;

/******************ADD YOUR VARIABLES HERE*************************/

int child_counter = 0;

/******************************************************************/

Expand Down