HEL/OS-Lab-Scheduler
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fixed pointer issues

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This commit is contained in:
Louis Heredero
2024-10-08 15:16:41 +02:00
parent 6abe829fdb
commit d843d4d068
1 changed files with 31 additions and 19 deletions
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50
simulator.c
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@@ -42,20 +42,20 @@ void print_pinfo(struct pinfo * info) {
printf(" Arrival time: %d\n", info->arrival_time); printf(" Arrival time: %d\n", info->arrival_time);
printf(" Execution time: %d\n", info->execution_time); printf(" Execution time: %d\n", info->execution_time);
printf(" Priority: %d\n", info->priority); printf(" Priority: %d\n", info->priority);
printf(" NEXT -> %p\n", info->next_pinfo);
printf("}>\n"); printf("}>\n");
} }
struct pinfo create_process(int id, int arrival_time, int execution_time, int priority) { struct pinfo * create_process(int id, int arrival_time, int execution_time, int priority) {
struct pinfo info = { struct pinfo * info = malloc(sizeof(struct pinfo));
id, info->id = id;
arrival_time, info->arrival_time = arrival_time;
execution_time, info->execution_time = execution_time;
priority, info->priority = priority;
0, info->wait_time = 0;
0, info->completion_time = 0;
WAITING, info->state = WAITING;
NULL info->next_pinfo = NULL;
};
return info; return info;
} }
@@ -93,7 +93,7 @@ struct pinfo * read_file() {
struct pinfo * first = NULL; struct pinfo * first = NULL;
struct pinfo * last = NULL; struct pinfo * last = NULL;
struct pinfo process; struct pinfo * process;
while (fgets(line, buf_size, file)) { while (fgets(line, buf_size, file)) {
pid_str = strtok(line, " "); pid_str = strtok(line, " ");
@@ -110,17 +110,18 @@ struct pinfo * read_file() {
// If linked list not initialized // If linked list not initialized
if (first == NULL) { if (first == NULL) {
first = &process; first = process;
} }
// If there is an element in list // If there is an element in list
if (last != NULL) { if (last != NULL) {
last->next_pinfo = &process; last->next_pinfo = process;
} }
last = &process; last = process;
print_pinfo(&process); print_pinfo(process);
} }
free(line);
fclose(file); fclose(file);
return first; return first;
} }
@@ -129,13 +130,24 @@ void write_file(struct pinfo * process, struct perf_info * perf) {
// TODO // TODO
} }
void free_processes(struct pinfo * next) {
struct pinfo * cur;
while (next != NULL) {
cur = next;
next = cur->next_pinfo;
free(cur);
}
}
int main() { int main() {
struct pinfo * processes = read_file(); struct pinfo * processes = read_file();
/*struct perf_info perf = schedule_FCFS(processes); //struct perf_info perf = schedule_FCFS(processes);
write_file(processes, &perf); //write_file(processes, &perf);
print_perf(perf);*/ //print_perf(&perf);
free_processes(processes);
return 0; return 0;
} }