PTHREAD_CREATE(3) Library Functions Manual PTHREAD_CREATE(3)
pthread_create -- create a new thread
POSIX Threads Library (libpthread, -lpthread)
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() 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:
o The signal mask is inherited from the creating thread.
o The set of signals pending for the new thread is empty.
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:
[EAGAIN] The system lacks the necessary resources to create
another thread, or the system-imposed limit on the
total number of threads in a process
PTHREAD_THREADS_MAX would be exceeded.
[EINVAL] The value specified by attr is invalid.
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'').
NetBSD 6.1.5 July 9, 2010 NetBSD 6.1.5