Standards / Extensions | C or C++ | Dependencies |
---|---|---|
POSIX.4a |
both | POSIX(ON) |
#define _OPEN_THREADS
#include <pthread.h>
int pthread_attr_init(pthread_attr_t *attr);
#define _UNIX03_THREADS
#include <pthread.h>
int pthread_attr_init(pthread_attr_t *attr);
Using a thread attribute object, you can manage the characteristics of threads in your application. It defines the set of values to be used for the thread during its creation. By establishing a thread attribute object, you can create many threads with the same set of characteristics, without defining those characteristics for each thread. You can define more than one thread attribute object. All threads are of equal priority.
If successful, pthread_attr_init() returns 0.
Special behavior for Single UNIX Specification, Version 3: If unsuccessful, pthread_attr_init() returns an error number to indicate the error.
⁄* CELEBP10 *⁄
#define _OPEN_THREADS
#include <stdio.h>
#include <pthread.h>
void *thread1(void *arg)
{
printf("hello from the thread\n");
pthread_exit(NULL);
}
int main()
{
int rc, stat;
pthread_attr_t attr;
pthread_t thid;
rc = pthread_attr_init(&attr);
if (rc == -1) {
perror("error in pthread_attr_init");
exit(1);
}
rc = pthread_create(&thid, &attr, thread1, NULL);
if (rc == -1) {
perror("error in pthread_create");
exit(2);
}
rc = pthread_join(thid, (void *)&stat);
exit(0);
}