?? create_recursive.c
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#include <rtl.h>#include <time.h>#include <pthread.h>#define NTHREAD 5#define THREAD_STACK_SIZE 20000static pthread_t thread;static char preallocated [NTHREAD][THREAD_STACK_SIZE];static pthread_t threads [NTHREAD];void * start_routine(void *param){ int arg = (int) param; int newthread = arg - 1; int ret; pthread_attr_t attr; rtl_printf("Thread %d is running\n", arg); if (!arg) { return 0; } rtl_printf("Thread %d creating thread %d\n", arg, newthread); pthread_attr_init (&attr); pthread_attr_setstackaddr (&attr, preallocated [newthread]); pthread_attr_setstacksize (&attr, THREAD_STACK_SIZE); ret = pthread_create (&threads [newthread], &attr, start_routine, (void *) (newthread)); if (ret) { rtl_printf("failed to create thread %d\n", newthread); } return 0;}int init_module(void) { return pthread_create (&thread, NULL, start_routine, (void *) NTHREAD);}void cleanup_module(void) { int i; pthread_cancel (thread); pthread_join (thread, NULL); for (i = 0; i < NTHREAD; i ++) { if (threads[i]) { pthread_cancel (threads[i]); pthread_join(threads[i], NULL); } }}
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