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:
•
The signal mask is inherited from the creating thread.
•
The set of signals pending for the new thread is empty.