| PTHREAD_CREATE(3) | 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.
The attributes specified via
attr are copied into the new thread. Any subsequent
modifications to the attributes object attr points to
will have no effect upon already-created threads. It is thus also safe to
pass the same attr to multiple calls to
pthread_create().
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(3) 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(3) 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.
pthread_create() shall fail if:
fork(2), pthread_attr(3), pthread_cleanup_pop(3), pthread_cleanup_push(3), pthread_exit(3), pthread_join(3)
The function conforms to IEEE Std 1003.1-2001 (“POSIX.1”).
| July 9, 2010 | NetBSD 11.0 |