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glibc  2.9
Defines | Functions | Variables
tst-tpp.h File Reference
#include <errno.h>
#include <pthread.h>
#include <sched.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/syscall.h>
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Defines

#define CHECK_TPP_PRIORITY(normal, boosted)

Functions

void init_tpp_test (void)

Variables

int fifo_min
int fifo_max

Define Documentation

#define CHECK_TPP_PRIORITY (   normal,
  boosted 
)
Value:
do                                                      \
    {                                                   \
      pid_t tid = syscall (__NR_gettid);                \
                                                        \
      struct sched_param cep_sp;                        \
      int cep_policy;                                          \
      if (pthread_getschedparam (pthread_self (), &cep_policy, \
                             &cep_sp) != 0)                    \
       {                                                \
         puts ("getschedparam failed");                 \
         ret = 1;                                       \
       }                                                \
      else if (cep_sp.sched_priority != (normal))              \
       {                                                \
         printf ("unexpected priority %d != %d\n",             \
                cep_sp.sched_priority, (normal));              \
       }                                                \
      if (syscall (__NR_sched_getparam, tid, &cep_sp) == 0     \
         && cep_sp.sched_priority != (boosted))         \
       {                                                \
         printf ("unexpected boosted priority %d != %d\n",     \
                cep_sp.sched_priority, (boosted));             \
         ret = 1;                                       \
       }                                                \
    }                                                   \
  while (0)

Definition at line 30 of file tst-tpp.h.


Function Documentation

void init_tpp_test ( void  )

Definition at line 61 of file tst-tpp.h.

{
  fifo_min = sched_get_priority_min (SCHED_FIFO);
  if (fifo_min < 0)
    {
      printf ("couldn't get min priority for SCHED_FIFO: %m\n");
      exit (1);
    }

  fifo_max = sched_get_priority_max (SCHED_FIFO);
  if (fifo_max < 0)
    {
      printf ("couldn't get max priority for SCHED_FIFO: %m\n");
      exit (1);
    }

  if (fifo_min > 4 || fifo_max < 10)
    {
      printf ("%d..%d SCHED_FIFO priority interval not suitable for this test\n",
             fifo_min, fifo_max);
      exit (0);
    }

  struct sched_param sp;
  memset (&sp, 0, sizeof (sp));
  sp.sched_priority = 4;
  int e = pthread_setschedparam (pthread_self (), SCHED_FIFO, &sp);
  if (e != 0)
    {
      errno = e;
      printf ("cannot set scheduling params: %m\n");
      exit (0);
    }
}

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Variable Documentation

Definition at line 58 of file tst-tpp.h.

Definition at line 58 of file tst-tpp.h.