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CPU.cpp
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CPU.cpp
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#include "CPU.h"
#include "waitqueue.h"
#include "console.h"
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <unistd.h>
#include "balancer.h"
CPU::CPU(void* balancer, long long int tick)
{
sem_init(&rbt_queue_sem, 0, 0);
pthread_mutex_init(&rbt_queue_mutex, NULL);
pthread_mutex_init(&sync_mutex, NULL);
pthread_t pusher_thread;
pthread_create(&pusher_thread, NULL, (&pusher), (void*) this);
pthread_detach(pusher_thread);
pthread_t fair_thread;
pthread_create(&fair_thread, NULL, (&tick_fair), (void*) this);
pthread_detach(fair_thread);
busy=0;
number=-1;
time_delta=tick;
idleq = balancer;
pthread_mutex_unlock(&sync_mutex);
}
void* CPU::tick_fair(void* arg)
{
CPU *cpu = (CPU*) arg;
usleep(500);
while(true)
{
usleep(cpu->time_delta);
if(!(cpu->busy))
{
cpu->cfs_rq.lock();
if (cpu->cfs_rq.empty())
{
cpu->cfs_rq.unlock();
print_ready3(cpu->number,cpu->cfs_rq.get_3id(), cpu->cfs_rq.get_3v_runtime(), cpu->cfs_rq.size());
print_ready2(cpu->number,cpu->cfs_rq.get_2id(), cpu->cfs_rq.get_2v_runtime());
print_ready(cpu->number,cpu->cfs_rq.get_id(), cpu->cfs_rq.get_v_runtime());
continue;
}
cpu->running = cpu->cfs_rq.pop_min();
print_ready3(cpu->number,cpu->cfs_rq.get_3id(), cpu->cfs_rq.get_3v_runtime(), cpu->cfs_rq.size());
print_ready2(cpu->number,cpu->cfs_rq.get_2id(), cpu->cfs_rq.get_2v_runtime());
print_ready(cpu->number,cpu->cfs_rq.get_id(), cpu->cfs_rq.get_v_runtime());
cpu->cfs_rq.unlock();
print_running(cpu->number, cpu->running.id, cpu->running.nice, cpu->running.v_runtime);
cpu->busy = 1;
}
cpu->running.v_runtime += floor((cpu->time_delta/1000)*(pow(1.25, cpu->running.nice)));
print_running(cpu->number, cpu->running.id, cpu->running.nice, cpu->running.v_runtime);
int goto_io = rand()%200; //(la probabilidad queda entre 0 y 0.5)
if (goto_io <= cpu->running.io_prob)
{
((BALANCER*)(cpu->idleq))->push_to_idle(cpu->running);
if (cpu->cfs_rq.empty()){
print_ready3(cpu->number,cpu->cfs_rq.get_3id(), cpu->cfs_rq.get_3v_runtime(), cpu->cfs_rq.size());
print_ready2(cpu->number,cpu->cfs_rq.get_2id(), cpu->cfs_rq.get_2v_runtime());
print_ready(cpu->number,cpu->cfs_rq.get_id(), cpu->cfs_rq.get_v_runtime());
cpu->busy = 0;
}
else{
cpu->running = cpu->cfs_rq.pop_min();
print_ready3(cpu->number,cpu->cfs_rq.get_3id(), cpu->cfs_rq.get_3v_runtime(), cpu->cfs_rq.size());
print_ready2(cpu->number,cpu->cfs_rq.get_2id(), cpu->cfs_rq.get_2v_runtime());
print_ready(cpu->number,cpu->cfs_rq.get_id(), cpu->cfs_rq.get_v_runtime());
print_running(cpu->number, cpu->running.id, cpu->running.nice, cpu->running.v_runtime);
}
cpu->cfs_rq.unlock();
continue;
}
cpu->cfs_rq.lock();
if (cpu->cfs_rq.empty())
{
print_ready3(cpu->number,cpu->cfs_rq.get_3id(), cpu->cfs_rq.get_3v_runtime(), cpu->cfs_rq.size());
print_ready2(cpu->number,cpu->cfs_rq.get_2id(), cpu->cfs_rq.get_2v_runtime());
print_ready(cpu->number,cpu->cfs_rq.get_id(), cpu->cfs_rq.get_v_runtime());
}
else if (cpu->running.v_runtime > cpu->cfs_rq.get_min_v_runtime()){
cpu->rbt_queue_push(cpu->running);
cpu->running = cpu->cfs_rq.pop_min();
print_ready3(cpu->number,cpu->cfs_rq.get_3id(), cpu->cfs_rq.get_3v_runtime(), cpu->cfs_rq.size());
print_ready2(cpu->number,cpu->cfs_rq.get_2id(), cpu->cfs_rq.get_2v_runtime());
print_ready(cpu->number,cpu->cfs_rq.get_id(), cpu->cfs_rq.get_v_runtime());
print_running(cpu->number, cpu->running.id, cpu->running.nice, cpu->running.v_runtime);
}
cpu->cfs_rq.unlock();
}
return(NULL);
}
void* CPU::pusher(void* arg){
CPU *cpu = (CPU*) arg;
usleep(500);
TASK task;
while(1)
{
sem_wait(&cpu->rbt_queue_sem);
cpu->rbt_queue_lock();
if(!cpu->rbt_queue_empty())
{
task = cpu->rbt_queue_pop();
cpu->rbt_queue_unlock();
task.last_cpu = cpu->number;
cpu->cfs_rq.lock();
cpu->cfs_rq.insert(task);
print_ready3(cpu->number,cpu->cfs_rq.get_3id(), cpu->cfs_rq.get_3v_runtime(), cpu->cfs_rq.size());
print_ready2(cpu->number,cpu->cfs_rq.get_2id(), cpu->cfs_rq.get_2v_runtime());
print_ready(cpu->number,cpu->cfs_rq.get_id(), cpu->cfs_rq.get_v_runtime());
cpu->cfs_rq.unlock();
}
else cpu->rbt_queue_unlock();
}
return(NULL);
}
int CPU::size(){
if(!busy) return 0;
return cfs_rq.size()+1;
}
void CPU::rbt_queue_push(TASK &task){
pthread_mutex_lock(&rbt_queue_mutex);
rbt_queue.push(task);
pthread_mutex_unlock(&rbt_queue_mutex);
sem_post(&rbt_queue_sem);
}
TASK CPU::rbt_queue_pop(){
TASK task = rbt_queue.front();
rbt_queue.pop();
return task;
}
bool CPU::rbt_queue_empty(){
bool e;
e = rbt_queue.empty();
return e;
}
void CPU::rbt_queue_lock(){
pthread_mutex_lock(&rbt_queue_mutex);
}
void CPU::rbt_queue_unlock(){
pthread_mutex_unlock(&rbt_queue_mutex);
}
vector<TASK> CPU::task_list(){
return cfs_rq.rq_list();
}