c/pthread_extra/test_pause.c

   1 #include <signal.h>
   2 #include <pthread.h>
   3 #include <pthread_extra.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <assert.h>
   7 #include <unistd.h>
   8
   9 pthread_t main_thread;
  10
  11 void *thread_test(void *arg) {
  12         //Whole process dies if you kill thread immediately before it is pausable
  13         //pthread_pause_enable();
  14         while(1) {
  15                 pthread_nsleep(0, 1000*1000*300);
  16                 pthread_pause_all();
  17                 printf("Running%s!\n", (char *)arg);
  18                 pthread_unpause_all();
  19                 pthread_pause(main_thread);
  20                 pthread_unpause(main_thread);
  21         }
  22 }
  23
  24 int main() {
  25
  26         main_thread = pthread_self();
  27
  28         pthread_t a, b;
  29         pthread_pause_enable(); //Will get inherited by all threads from now on
  30         //That way you can be sure it is pausable immediately
  31         pthread_extra_create(&a, NULL, thread_test, " A");
  32         pthread_extra_create(&b, NULL, thread_test, " B");
  33         //pthread_sleep(1);
  34
  35         //printf("OK\n");
  36         /*
  37         for(int32_t i = 1;i>0;i++) {
  38                 pthread_pause(a);
  39                 pthread_pause(a);
  40                 pthread_unpause(a);
  41                 pthread_unpause(a);
  42         }
  43         */
  44         /*
  45         exit(23);
  46         pthread_pause(a);
  47         pthread_unpause(b);
  48         */
  49
  50         while(1) {
  51                 pthread_pause(b);
  52                 pthread_unpause(a);
  53                 printf("SWITCH A:\n");
  54                 pthread_sleep(2);
  55
  56                 printf("SWITCH B:\n");
  57                 pthread_pause(a);
  58                 pthread_unpause(b);
  59                 pthread_sleep(2);
  60
  61                 printf("SWITCH A+B:\n");
  62                 pthread_unpause(a);
  63                 pthread_unpause(b);
  64                 pthread_sleep(1);
  65
  66                 printf("SWITCH MAIN ONLY:\n");
  67                 pthread_pause_all();
  68                 //printf("\n");
  69                 pthread_sleep(1);
  70                 printf("SWITCH MAIN A+B:\n");
  71                 pthread_unpause_all();
  72                 //printf("\n");
  73                 pthread_sleep(1);
  74         }
  75
  76         pthread_join(a, NULL);
  77         pthread_join(b, NULL);
  78         printf("DIEDED!\n");
  79 }