?? rtf_prealloc.c
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#include <rtl.h>#include <time.h>#include <rtl_fifo.h>#include <pthread.h>#include <unistd.h>static pthread_t thread;static int fd_fifo;static void * start_routine(void *arg){ struct sched_param p; p . sched_priority = 1; pthread_setschedparam (pthread_self(), SCHED_FIFO, &p); pthread_make_periodic_np (pthread_self(), gethrtime(), 500000000); while (1) { pthread_wait_np (); write(fd_fifo, "test ", 6); } return 0;}int init_module(void) { fd_fifo = open("/dev/rtf0", O_NONBLOCK | O_CREAT); if (fd_fifo < 0) { rtl_printf("/dev/rtf0 open returned %d\n", fd_fifo); return -1; } rtl_printf("ioctl on /dev/rtf0 (setting fifo size to 4000) returned %d\n", ioctl(fd_fifo, RTF_SETSIZE, 4000)); return pthread_create (&thread, NULL, start_routine, 0);}void cleanup_module(void){ int ret; pthread_delete_np (thread); ret = close(fd_fifo); rtl_printf ("rtl_fifo: close returned %d\n", ret);}
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