Application of unix multithread control

1. Learning of three attributes of thread

Binding

Separate

Priority

Thread.c

# include "thread.h" # include#include#include#include#includeextern int status_1;extern int status_2;void thread_0 (char*pstr) / / with parameter {int counter = 10 position while (counter--) {sleep (1); printf ("% s\ n", pstr);} pthread_exit (& status_1); / / thread exit special function} void thread_1 (void) / / with no parameter {int counter = 10 position while (counter--) {sleep (1) Printf ("thread_1\ n");} pthread_exit (& status_2); / / thread exit special function} bool _ creat_thread (pthread_t * thread, void * (* start_routine) (void *), void * arg, int SCOPE, int DETACH, int policy, int priority_val) {struct sched_param param;pthread_attr_t attr If (0! = pthread_attr_init (& attr)) / / initialize the structure attr. If you do not need attr to cancel attr, pthread_attr_destroy {perror ("pthread_attr_init\ n"); return false;} if (0! = pthread_attr_setscope (& attr, SCOPE)) / / sets whether thread properties are bound (PTHREAD_SCOPE_SYSTEM) unbound (PTHREAD_SCOPE_PROCESS) {perror ("pthread_attr_setscope\ n"); return false } if (0! = pthread_attr_setdetachstate (& attr, DETACH)) / / sets whether the thread property is detached (PTHREAD_CREATE_DETACHED) non-detached (PTHREAD_CREATE_JOINABLE) {perror ("pthread_attr_setdetachstate\ n"); return false } if (0! = pthread_attr_setschedpolicy (& attr, policy)) / / three priority policy choices: SCHED_FIFO (values 1-99), SCHED_RR (values 1-99), and SCHED_OTHER {perror ("pead_attr_setschedpolicy\ n"); return false;} if (priority_val > 0 & priority_val)