thread-attribute

1.set thread detach statusvoid sample(){pthread_attr_t  thread_attr;res= pthread_attr_init(&thread_attr);if(res != 0){perror("Attribute creation failed");exit(EXIT_FAILURE);}//set detach stateres = pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_DETACHED);if(res != 0) {perror("setdetachstate  failed");exit(EXIT_FAILURE);}//use attr when thread is createdres = pthread_create(&a_thread, &thread_attr, thread_function, (void*)message);pthread_attr_destory(&thread_attr);}2. set thread schedule priority#include <pthread.h>void sample(){int max_priority;int min_priority;struct sched_param scheduling_value;int res;pthread_attr_t  thread_attr;res = pthread_attr_setschedpolicy(&thread_attr,SCHED_OTHER);if(res != 0 ){perror("pthread_attr_setschedpolicy failure");exit(EXIT_FAILURE);}//look up prioriry rangemax_priority = sched_get_priority_max(SCHED_OTHER);min_priority = sched_get_priority_min(SCHED_OTHER);scheduling_valule.sched_priority = min_priority;res = pthread_attr_setschedparam(&thread_attr, & scheduling_value);if(res != 0 ){perror("pthread_attr_setschedparam failure");exit(EXIT_FAILURE);}//...}