ppos/test/pingpong-wait.c

   1 // PingPongOS - PingPong Operating System
   2 // Prof. Carlos A. Maziero, DINF UFPR
   3 // Versão 2.0 -- Junho de 2025
   4
   5 // ATENÇÃO: ESTE ARQUIVO NÃO DEVE SER ALTERADO;
   6 // ALTERAÇÕES SERÃO DESCARTADAS NA CORREÇÃO.
   7
   8 // Teste da função task_wait() (leve)
   9
  10 #include <assert.h>
  11 #include "lib/libc.h"
  12 #include "ppos.h"
  13
  14 #define WORKLOAD 20000
  15
  16 static struct task_t *pang, *peng, *ping, *pong, *pung;
  17
  18 // simula um processamento pesado
  19 int hardwork(int n)
  20 {
  21     int soma = 0;
  22
  23     for (int i = 0; i < n; i++)
  24         for (int j = 0; j < n; j++)
  25             soma += j;
  26     return (soma);
  27 }
  28
  29 // corpo das tarefas
  30 void body(void *arg)
  31 {
  32     int max, tid;
  33
  34     tid = task_id(NULL);
  35     max = tid * 2;
  36
  37     printf("%5d ms: %s inicia\n", systime(), (char *)arg);
  38     for (int i = 0; i < max; i++)
  39     {
  40         printf("%5d ms: %s %d\n", systime(), (char *)arg, i);
  41         hardwork(WORKLOAD);
  42     }
  43     printf("%5d ms: %s termina\n", systime(), (char *)arg);
  44
  45     task_exit(tid);
  46 }
  47
  48 // corpo da tarefa principal
  49 void user_main(void *arg)
  50 {
  51     int exit_code, status;
  52
  53     printf("user: inicio\n");
  54
  55     pang = task_create("pang", body, "\tPang");
  56     assert(pang);
  57     peng = task_create("peng", body, "\t\tPeng");
  58     assert(peng);
  59     ping = task_create("ping", body, "\t\t\tPing");
  60     assert(ping);
  61     pong = task_create("pong", body, "\t\t\t\tPong");
  62     assert(pong);
  63     pung = task_create("pung", body, "\t\t\t\t\tPung");
  64     assert(pung);
  65
  66     for (int i = 0; i < 2; i++)
  67     {
  68         printf("%5d ms: user %d\n", systime(), i);
  69         hardwork(WORKLOAD);
  70     }
  71
  72     printf("%5d ms: user esperando Pang...\n", systime());
  73     exit_code = task_wait(pang);
  74     assert(exit_code == task_id(pang));
  75
  76     printf("%5d ms: user esperando Peng...\n", systime());
  77     exit_code = task_wait(peng);
  78     assert(exit_code == task_id(peng));
  79
  80     printf("%5d ms: user esperando Ping...\n", systime());
  81     exit_code = task_wait(ping);
  82     assert(exit_code == task_id(ping));
  83
  84     printf("%5d ms: user esperando Pong...\n", systime());
  85     exit_code = task_wait(pong);
  86     assert(exit_code == task_id(pong));
  87
  88     printf("%5d ms: user esperando Pung...\n", systime());
  89     exit_code = task_wait(pung);
  90     assert(exit_code == task_id(pung));
  91
  92     status = task_destroy(pang);
  93     assert(status == NOERROR);
  94     status = task_destroy(peng);
  95     assert(status == NOERROR);
  96     status = task_destroy(ping);
  97     assert(status == NOERROR);
  98     status = task_destroy(pong);
  99     assert(status == NOERROR);
 100     status = task_destroy(pung);
 101     assert(status == NOERROR);
 102
 103     printf("%5d ms: user termina\n", systime());
 104
 105     task_exit(0);
 106 }