| PTHREAD_CREATE(3) | MidnightBSD Library Functions Manual | PTHREAD_CREATE(3) |
pthread_create —
create a new thread
POSIX Threads Library (libpthread, -lpthread)
#include
<pthread.h>
int
pthread_create(pthread_t
*restrict thread, const
pthread_attr_t *restrict attr,
void *(*start_routine)(void
*), void *restrict
arg);
The
pthread_create()
function is used to create a new thread, with attributes specified by
attr, within a process. If attr
is NULL, the default attributes are used. If the
attributes specified by attr are modified later, the
thread's attributes are not affected. Upon successful completion
pthread_create() will store the ID of the created
thread in the location specified by thread.
The thread is created executing
start_routine with arg as its
sole argument. If the start_routine returns, the
effect is as if there was an implicit call to
pthread_exit()
using the return value of start_routine as the exit
status. Note that the thread in which
main()
was originally invoked differs from this. When it returns from
main(), the effect is as if there was an implicit
call to
exit()
using the return value of main() as the exit
status.
The signal state of the new thread is initialized as:
If successful, the pthread_create()
function will return zero. Otherwise an error number will be returned to
indicate the error.
The pthread_create() function can return
any of the following errors:
ENOMEM]EAGAIN][PTHREAD_THREADS_MAX] would be exceeded.EAGAIN]RACCT_NTHR limit would be exceeded; see
racct(2).EPERM]EINVAL]EDEADLK]EFAULT]cpuset_setaffinity(2), fork(2), racct(2), thr_new(2), pthread_attr(3), pthread_cancel(3), pthread_cleanup_pop(3), pthread_cleanup_push(3), pthread_exit(3), pthread_join(3)
The pthread_create() function conforms to
ISO/IEC 9945-1:1996 (“POSIX.1”).
| August 17, 2018 | midnightbsd-3.1 |