int main(int argc, char *argv[]) {
FILE *fp;
int blocklist[MAX_JOBS];
int number;
int i = 0;
if (argc == 2){
fp = fopen(argv[1], "r");
}
else {
fp = stdin;
}
while( fscanf(fp, "%d", &number) > 0)
{
blocklist[i] = number;
i++;
}
printf("Assignment 6: Block Access Algorithm");
printf("\nBy: Nikki Talley, Chad Rasmussen and Josh Chevrier");
printf("\n");
fcfs(blocklist, i);
sstf(blocklist, i);
look(blocklist, i);
cLook(blocklist, i);
return 0;
}
int main() {
pptr head=NULL;
pptr tail=NULL;
int i=0;
int tpid,tarr_time,tburst_time;
pptr tprocess;
FILE *read;
read=fopen("input","r");
write=fopen("write","w");
trace=fopen("trace","w");
for(i=1;i<=3;i++) {
//fscanf(read,"%d",&tpid);
tpid=++g_pid;
fscanf(read,"%d",&tarr_time);
fscanf(read,"%d",&tburst_time);
tprocess=create_process(tpid,tarr_time,tburst_time);
add_to_queue(&head,&tail,tprocess);
} fclose(read);
fcfs(head,tail);
return 0;
}
void choice()
{
clrscr();
i=nor;
movt=0;
int ch;
cout<<"1.FCFS\n2.SSTF\n3.SCAN\n4.LOOK\n5.CSCAN\n6.CLOOK\n7.Exit\nEnter Choice : ";
cin>>ch;
switch(ch)
{
case 1:fcfs();
break;
case 2:sstf();
break;
case 3:scan();
break;
case 4:look();
break;
case 5:cscan();
break;
case 6:clook();
break;
default:exit(1);
}
}
static auto bindSimulator(EAlgorithms algorithm)
{
switch (algorithm)
{
case EAlgorithms::FCFS:
{
AlgorithmSimulator fcfs(std::bind(&Algorithms::FCFS, std::placeholders::_1, std::placeholders::_2));
return fcfs;
}
case EAlgorithms::RR:
{
AlgorithmSimulator rr(std::bind(&Algorithms::RR, std::placeholders::_1, std::placeholders::_2));
return rr;
}
case EAlgorithms::PQ:
{
AlgorithmSimulator pq(std::bind(&Algorithms::PriorityQueue, std::placeholders::_1, std::placeholders::_2));
return pq;
}
case EAlgorithms::SJK:
{
AlgorithmSimulator sjk(std::bind(&Algorithms::SJK, std::placeholders::_1, std::placeholders::_2));
return sjk;
}
default:
throw std::logic_error("Invalid algorithm...");
}
}
void main()
{
clrscr();
cout << "Enter the Number of Process : ";
cin >> n;
cout << "\n\n1) FCFS 2) SJF 3) SRTF 4) RR\n\n";
cout << "Enter Your Choice : ";
cin >> choice;
cout << "\n";
int i;
for(i=0;i<n;i++)
{
cout << "Arrival Time & Service Time for Process " << i+1 << " : ";
tab[i][0]=i+1;
cin >> tab[i][1];
cin >> tab[i][2];
}
ttt=totaltime();
switch(choice)
{
case '1': fcfs();break;
case '2': sjf();break;
case '3': srtf();break;
case '4': rr();break;
default : exit(0);
}
}
int main(int argc, char** argv) {
float totale;
int MoT;
menu();
printf("[1]Totale\t[2]Media\t[0]Exit\n");
scanf("%d",&MoT);
if (!MoT)
exit(EXIT_SUCCESS);
totale = fcfs(MoT);
if (totale >= 0)
printf("Il tempo di attesa è: %5.2f\n",totale);
else if (totale == -2)
printf("Error!Incorrect number of processes");
else if (totale == -1)
printf("Error! Invalid MoT\n");
else if (totale == -3)
printf("Error! Invalid execution time value");
return (EXIT_SUCCESS);
}
int Program::exec()
{
std::vector<unsigned int> positions;
Random rand;
for (unsigned long r = ReadsCount_; r > 0; r--)
positions.push_back(rand.next(1, Config_.getInt("Head", "MaxPos", 1) - 1));
DS_.add(positions);
Disk fcfs(Config_.getInt("Head", "InitPos", 1));
Disk sstf(Config_.getInt("Head", "InitPos", 1));
Disk scan(Config_.getInt("Head", "InitPos", 1));
CSCANDisk cscan(Config_.getInt("Head", "InitPos", 1), Config_.getInt("Head", "MaxPos", 1));
std::cout << "FCFS \t\t SSTF \t\t SCAN \t\t CSCAN" << std::endl;
do
{
fcfs.setNextPosition(DS_.popFCFS());
sstf.setNextPosition(DS_.popSSTF());
scan.setNextPosition(DS_.popSCAN());
cscan.setNextPosition(DS_.popCSCAN());
std::string str = "";
str += fcfs.toString() + " \t ";
str += sstf.toString() + " \t ";
str += scan.toString() + " \t ";
str += cscan.toString();
std::cout << str << std::endl;
Log_.out(str);
}
while (!DS_.done());
std::cin.get();
return 0;
}
int main(){
mythread_init();
struct mythread_t t1, t2;
mythread_create(&t1, test, 0);
mythread_create(&t2, test2, 0);
fcfs();
printf("all threads completed\n");
}
void main()
{
int ch,n,i;
struct process p[20];
printf("\nEnter number of processes: ");
scanf("%d",&n);
accept(p,n);
for(i=0;i<n;i++)
p[i].flag=0;
fcfs(p,n);
}
int main()
{
input();
printf("%d\n\n\n",clook());
printf("%d\n\n\n",cscan());
printf("%d\n\n\n",fcfs());
printf("%d\n\n\n",look());
printf("%d\n\n\n",scan());
printf("%d\n\n\n",sstf());
return 0;
}
int main()
{
static int size;
printf("Enter the total number of processes: ");
scanf("%d", &size);
if(size == 0) goto empty_queue;
fcfs(size); /* first come first serve */
return 0;
empty_queue: printf("\nProcess queue is empty. End of run.\n");
}
int main(void)
{
int frameSize, i = 0;
char file[32], *requests = NULL, ch;
FILE *fp;
initscr();
werase(stdscr);
getmaxyx(stdscr, maxy, maxx);
mvprintw(maxy/2 - 1, (maxx - 40)/2, "Enter the name of file to be read: ");
scanw("%s", file);
if((fp = fopen(file, "r")) == NULL)
{
mvprintw(maxy/2 + 1, (maxx - 20) / 2, "Error opening file!!!");
getch();
endwin();
return -1;
}
ch = getc(fp);
while(ch != EOF)
{
i++;
requests = (char *) realloc(requests, sizeof(char) * i);
requests[i - 1] = ch;
ch = getc(fp);
};
requests = (char *) realloc(requests, sizeof(char) * (i+1));
requests[i] = '\0';
fclose(fp);
mvprintw(maxy/2 + 1, (maxx - 30) / 2, "Enter the number of frames: ");
scanw("%d", &frameSize);
while(1)
{
switch(menu())
{
case 1: fcfs(requests, frameSize);
break;
case 2: lru(requests, frameSize);
break;
case 3: optimal(requests, frameSize);
break;
case 4: endwin();
return 0;
}
}
return 0;
}
bankers(int t)
{
int count1 = 0, count2 = 0,i , j,k, n=0;
int safe[15];
printf("\n");
printf("\nSafe Sequence is:- \t");
while(count1!=process)
{
count2=count1;
for(i=0;i<process;i++)
{
for(j=0;j<resource;j++)
{
if(need[i][j]<=avail[j])
{
k++;
}
}
if(k==resource && completed[i]==0 )
{
safe[n] = i;
n++;
printf("P[%d]\t",p[i]);
completed[i]=1;
for(j=0;j<resource;j++)
{
avail[j]=avail[j]+allot[i][j];
}
count1++;
}
k=0;
}
if(count1==count2)
{
printf("\t\t Stop ..After this.....Deadlock \n");
break;
}
}
printf("\n");
for(i=0;i<3;i++)
{
for(j=0;j<process;j++)
printf("%d\t",ans[i][j]);
printf("\n");
}
if(count1!=count2)
fcfs(safe);
}
int setup_scheduler(const char* input_file, const char* scheduler, int sec_to_sec_seek, int end_to_end_seek){
char** tokens = read_input(input_file);
int len = array_len(tokens);
access_data* data[len];
char* tok;
char* line;
int i = 0;
while (i < len){
line = tokens[i];
tok = strtok(line," ");
int arrival_time = atoi((const char*)tok);
tok = strtok(NULL," ");
int sector = atoi((const char*)tok);
access_data* a = malloc(sizeof(access_data));
new_data(a, arrival_time, sector);
data[i] = a;
i++;
}
//show_data(data, len);
if (strcmp(scheduler, "FCFS") == 0){
fcfs(data, len, sec_to_sec_seek);
}
else if (strcmp(scheduler, "SSTN") == 0){
sstn(data, len, sec_to_sec_seek);
}
else if (strcmp(scheduler, "SCAN") == 0){
scan(data, len, sec_to_sec_seek);
}
else if (strcmp(scheduler, "CSCAN") == 0){
cscan(data, len, sec_to_sec_seek);
}
else{
fprintf(stderr, "%s\n","Invalid scheduling algorithm.");
exit(EXIT_FAILURE);
}
free_access_data(data, len);
free(tokens);
return 0;
}
int main (void )
{
int valor;
printf ("Digite um escalonamento: \n\n");
printf ("1) FCFS \n");
printf ("2) SJF \n");
printf ("3) SRTF \n");
printf ("4) ROUND ROBIN \n");
printf ("5) MULTINIVEL \n");
printf ("6) SAIR \n\n");
scanf("%d", &valor);
switch ( valor )
{
case 1 :
fcfs();
break;
case 2 :
sjf();;
break;
case 3 :
srtf();;
break;
case 4 :
roundrobin();
break;
case 5 :
multinivel();
break;
case 6 :
printf ("\nFim.\n");
break;
default :
printf ("Valor invalido!\n");
}
return 0;
}
/*
**policy_handler select the corresponding function to handle the request sequence
**@ncylinder is the total number of cylinders
**@ipolicy is the index if policy
**@ifile is the file pointer to the input_file
**@result is a pointer to dynamic array for store execute sequence and their travel_num
**@travel is the total travel number
*/
void policy_handler(int ncylinder, int ipolicy, FILE *ifile, int **result, int *travel)
{
int *list = NULL;
init_sequence(ncylinder, ifile, &list);
init_result(result);
item *sorted = NULL;
int first = list[0];
//sort the request according to there distance to the head of disk
if (ipolicy == 2 || ipolicy == 3 || ipolicy == 4)
sorted = sort(ncylinder, list);
if (ipolicy == 1)
*travel = fcfs(ncylinder, list, *result);
else if (ipolicy == 2)
*travel = sstf(first, sorted, *result);
else if (ipolicy == 3)
*travel = cscan(ncylinder, first, sorted, *result);
else if (ipolicy == 4)
*travel = look(ncylinder, first, sorted, *result);
}
int main(int argc, char *argv[])
{
int choice;
if (argc != 2)
{
fprintf(stderr, "Usage: [%s] + num_process\n", argv[0]);
}
while (true)
{
menu_show();
scanf("%d", &choice);
switch(choice)
{
case 1:
priority_create(atoi(argv[1]));
priority();
break;
case 2:
fcfs_create(atoi(argv[1]));
fcfs();
break;
case 3:
sjf_create(atoi(argv[1]));
sjf();
break;
case 0:
printf("退出程序...\n");
break;
default:
printf("选择错误，请重新选择!\n");
break;
}
if (choice == 0)
break;
}
return EXIT_SUCCESS;
}
int main() {
//init the root node of the Process list
struct Process* rootProcess = 0;
//init the Process pointer which will traverse the list
struct Process* current = 0;
//init variables to hold information about process list
char policy[15];
int quantum;
//init the file stream
FILE *fp;
fp = fopen("input.txt", "r");
// Read the input file and create the list of Process nodes
char *policyLine = readLineFromFile(fp);
sscanf(policyLine, "%s %d", policy, &quantum);
free(policyLine); policyLine = 0;
// Read the list of processes until we see a newline or eof
char *nextProcessLine = readLineFromFile(fp);
while(strcmp(nextProcessLine, "\n") != 0)
{
int id, arrive, duration, priority;
if(sscanf(nextProcessLine, "%d %d %d %d", &id, &arrive, &duration, &priority) != 4)
{
// If sscanf returned something other than 4, we didn't get a complete line - skip this process
fprintf(stderr, "Error: process line incomplete, skipping it.\n");
}
else
{
// We got a complete line - build a Process struct and add it to the list
if(current == 0) // this is the root node
{
rootProcess = malloc(sizeof(struct Process));
current = rootProcess;
}
else
{
current->next = malloc(sizeof(struct Process));
current = current->next;
}
current->id = id;
current->arrive = arrive;
current->duration = duration;
current->priority = priority;
current->next = 0;
}
// Read the next line
free(nextProcessLine); nextProcessLine = 0;
if(feof(fp) || ferror(fp))
break;
nextProcessLine = readLineFromFile(fp);
}
if(nextProcessLine)
free(nextProcessLine); nextProcessLine = 0;
// If there were no processes in the file, proceed no further.
if(current == 0)
{
fprintf(stderr, "No processes specified - exiting.\n");
exit(1);
}
// Print out the list of processes -- for debugging
// (Uncomment from here to the end of the while-loop if you want a little more verbose output.)
/*printf("\nThe schedule policy is as follows: %s \n", policy);
printf("The quantum for the policy is: %d \n", quantum);
printf("The input file has provided these processes:\n");
current = rootProcess;
while (current != 0) {
printf("P%d: ", current->id);
printf( "id: %d ", current->id);
printf( "arrive: %d ", current->arrive);
printf( "duration: %d ", current->duration);
printf( "priority: %d \n", current->priority);
current = current->next;
}*/
int wait = 0;
int turnaround = 0;
int downTime = 0;
struct cpuSlot *slots;
if (strcmp(policy, "fcfs") == 0) {
slots = fcfs(rootProcess, quantum, &downTime);
printf("%d ", totalTime(slots));
printf("%d \n", totalTime(slots) + downTime);
int count = 0;
while (slots != 0) {
printf("%d ", slots->procId);
printf( "%d ", slots->startTime);
printf( "%d ", slots->end);
printf( "%d ", slots->turnaround);
turnaround += slots->turnaround;
printf( "%d \n", slots->wait);
wait += slots->wait;
slots = slots->next;
count++;
}
printf("%f ", (float)turnaround/(float)count);
printf("%f \n", (float)wait/(float)count);
} else if (strcmp(policy, "rr") == 0) {
slots = rr(rootProcess, quantum, &downTime);
printf("%d ", totalTime(slots));
printf("%d \n", totalTime(slots) + downTime);
int count = 0;
while (slots != 0) {
printf("%d ", slots->procId);
printf("%d ", slots->startTime);
printf("%d ", slots->end);
printf("%d ", slots->turnaround);
turnaround += slots->turnaround;
printf( "%d \n", slots->wait);
wait += slots->wait;
slots = slots->next;
count++;
}
printf("%f ", (float)turnaround/(float)count);
printf("%f \n", (float)wait/(float)count);
} else if (strcmp(policy, "priority_non") == 0) {
slots = priority_non(rootProcess, quantum, &downTime);
printf("%d ", totalTime(slots));
printf("%d \n", totalTime(slots) + downTime);
int count = 0;
while (slots != 0) {
printf("%d ", slots->procId);
printf( "%d ", slots->startTime);
printf( "%d ", slots->end);
printf( "%d ", slots->turnaround);
turnaround += slots->turnaround;
printf( "%d \n", slots->wait);
wait += slots->wait;
slots = slots->next;
count++;
}
printf("%f ", (float)turnaround/(float)count);
printf("%f \n", (float)wait/(float)count);
} else if (strcmp(policy, "priority") == 0) {
slots = priority(rootProcess, quantum, &downTime);
printf("%d ", totalTime(slots));
printf("%d \n", totalTime(slots) + downTime);
int count = 0;
while (slots != 0) {
printf("%d ", slots->procId);
printf( "%d ", slots->startTime);
printf( "%d ", slots->end);
printf( "%d ", slots->turnaround);
turnaround += slots->turnaround;
printf( "%d \n", slots->wait);
wait += slots->wait;
slots = slots->next;
count++;
}
printf("%f ", (float)turnaround/(float)count);
printf("%f \n", (float)wait/(float)count);
} else {
printf("The schedule policy in the input file is invalid\n");
}
// Deallocate the process and CPU-slot lists
for(struct Process *p = rootProcess; p != 0; )
{
struct Process *toDelete = p;
p = p->next;
free(toDelete);
}
rootProcess = 0;
for(struct cpuSlot *p = slots; p != 0; )
{
struct cpuSlot *toDelete = p;
p = p->next;
free(toDelete);
}
slots = 0;
return 0;
}
int main(int argc, char **argv)
{
FILE * inputf;
if (argc == 3)
{
verbose = 1;
inputf = fopen(argv[2], "r");
}
else if (argc == 2)
{
verbose = 0;
inputf = fopen(argv[1], "r");
}
random_ints = fopen(RANDOM_INTS, "r");
int pool_sz;
int a;
int b;
int c;
int io;
fscanf(inputf, "%d", &pool_sz);
int p_ind;
process pool[pool_sz];
process pool_copy[pool_sz];
process sorted_pool[pool_sz];
process sorted_copy[pool_sz];
process proc;
int state[pool_sz];
char * list_output;
char * process_format = " ( %d %d %d %d )";
printf("The original input was: %d", pool_sz);
for (p_ind = 0; p_ind < pool_sz; p_ind ++)
{
fscanf(inputf, process_format, &a, &b, &c, &io);
asprintf(&list_output, process_format, a, b, c, io);
printf(list_output);
proc = init_process(p_ind, a, b, c, io);
pool[p_ind] = proc;
sorted_pool[p_ind] = proc;
state[p_ind] = UNSTARTED;
}
printf("\n");
qsort(sorted_pool, pool_sz, sizeof(process), process_cmp);
printf("The (sorted) input is: %d", pool_sz);
for (p_ind = 0; p_ind < pool_sz; p_ind ++)
{
proc = sorted_pool[p_ind];
asprintf(&list_output, process_format, proc.arrival_time, proc.cpu_burst_gen, proc.cpu_time_left, proc.io_burst_gen);
printf(list_output);
}
printf("\n\n");
list_output = NULL;
process_format = NULL;
memcpy(pool_copy, pool, sizeof(process) * pool_sz);
memcpy(sorted_copy, sorted_pool, sizeof(process) * pool_sz);
uni(state, pool_copy, sorted_copy, pool_sz);
fclose(random_ints);
random_ints = fopen(RANDOM_INTS, "r");
int i = 0;
for (i = 0; i < pool_sz; i ++)
{
state[i] = UNSTARTED;
}
memcpy(pool_copy, pool, sizeof(process) * pool_sz);
fcfs(state, pool_copy, pool_sz);
fclose(random_ints);
random_ints = fopen(RANDOM_INTS, "r");
for (i = 0; i < pool_sz; i ++)
{
state[i] = UNSTARTED;
}
memcpy(pool_copy, pool, sizeof(process) * pool_sz);
sjf(state, pool_copy, pool_sz);
fclose(random_ints);
random_ints = fopen(RANDOM_INTS, "r");
for (i = 0; i < pool_sz; i ++)
{
state[i] = UNSTARTED;
}
memcpy(pool_copy, pool, sizeof(process) * pool_sz);
roundrobin(2, state, pool_copy, pool_sz);
fclose(random_ints);
return 0;
}
int main()
{
int ch,i,n;
printf("enter the number of processes\n");
scanf("%d",&n);
for(i=0;i<n;i++)
{
printf("enter process id\n");
scanf("%d",&p[i].pid);
printf("enter the arrival time\n");
scanf("%d",&p[i].at);
printf("enter the service time\n");
scanf("%d",&p[i].bt);
}
do
{
printf("1.fcfs \n2.sjf non-premptive\n3.sjf premptive\n");
printf("enter choice\n");
scanf("%d",&ch);
if(ch==1)
{
fcfs(n);
gantt(p,n);
display(p,n);
}
if(ch==2)
{
nsjf(n);
gantt(p,n);
display(p,n);
}
if(ch==3)
{
psjf(n);
}
}while(ch!=4);
return 0;
}