magic

gistfile1.txt

typedef int (*pthread_create_f)(pthread_t * __restrict, const pthread_attr_t * __restrict,
void *(*)(void *), void * __restrict);
static pthread_create_f real_create = NULL;

#include <pthread.h>
#include <dlfcn.h>
extern "C" int pthread_create(pthread_t * __restrict thread, const pthread_attr_t * __restrict attr,
void *(*start)(void *), void * __restrict arg)
{
int rc;
if (!real_create)
real_create = (pthread_create_f)dlsym(RTLD_NEXT, "pthread_create");

rc = (*real_create)(thread, attr, start, arg);

struct sched_param param;
int policy;
pthread_getschedparam(*thread, &policy, &param);
pthread_setschedparam(*thread, SCHED_FIFO, &param);

return rc;
}