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#include <sched.h>
#include <bsp.h>
#include <stdlib.h>
#include <stdio.h>
#include <pthread.h>
pthread_mutex_t mutex;
pthread_cond_t cond;
struct timespec timeout;
struct sched_param param;
pthread_attr_t attr;
void * print_hello(void * arg)
{
printf("<child>: Hello World! task with max priority \n");
clock_gettime( CLOCK_REALTIME, &timeout );
timeout.tv_sec += 3;
timeout.tv_nsec = 0;
printf("The task is coming to enter in a timed wait\n");
pthread_cond_timedwait(&cond, &mutex, &timeout);
printf("The task is coming out from the timed wait \n");
return NULL;
}
void * print_hello_a(void * arg)
{
printf(" <child>: Hello World! Task with lowest priority ");
return NULL;
}
void *POSIX_Init()
{
pthread_t child1;
pthread_t child2;
pthread_attr_init(&attr);
pthread_attr_setschedpolicy(&attr, SCHED_FIFO);
pthread_mutex_init( &mutex, NULL );
pthread_cond_init( &cond, NULL );
printf("<main> Enter in the main \n");
printf("Creating first task \n");
param.sched_priority = sched_get_priority_max(SCHED_FIFO);
pthread_attr_setschedparam(&attr, ¶m);
if ( pthread_create( &child1, &attr, print_hello, NULL) ||
pthread_setschedparam(child1, SCHED_FIFO, ¶m) ) {
printf(
"Thread cannot be created or you have not enough privileges \n"
" to set priority!!!!\n");
exit(1);
}
printf("First Task created \n");
printf("Creating second task \n");
param.sched_priority = sched_get_priority_max(SCHED_FIFO) - 1;
pthread_attr_setschedparam(&attr, ¶m);
if ( pthread_create( &child2, &attr, print_hello_a, NULL) ||
pthread_setschedparam(child2, SCHED_FIFO, ¶m) ) {
printf(
"Thread cannot be created or you have not enough privileges \n"
" to set priority!!!!\n");
exit(1);
}
printf("Second task created \n");
printf("<main> Out of the main\n");
pthread_join( child1, NULL );
pthread_join( child2, NULL );
exit(0);
}
#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
#define CONFIGURE_MAXIMUM_POSIX_THREADS 10
#define CONFIGURE_POSIX_INIT_THREAD_TABLE
#define CONFIGURE_INIT
#include <rtems/confdefs.h>
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