Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
PTHREAD_CREATE(3)	 BSD Library Functions Manual	     PTHREAD_CREATE(3)

NAME
     pthread_create -- create a	new thread

LIBRARY
     POSIX Threads Library (libpthread,	-lpthread)

SYNOPSIS
     #include <pthread.h>

     int
     pthread_create(pthread_t *thread, const pthread_attr_t *attr,
	 void *(*start_routine)(void *), void *arg);

DESCRIPTION
     The pthread_create() function is used to create a new thread, with	at-
     tributes specified	by attr, within	a process.  If attr is NULL, the de-
     fault attributes are used.	 If the	attributes specified by	attr are modi-
     fied 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	argu-
     ment.  If the start_routine returns, the effect is	as if there was	an im-
     plicit call to pthread_exit() using the return value of start_routine as
     the exit status.  Note that the thread in which main() was	originally in-
     voked 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.

RETURN VALUES
     If	successful, the	pthread_create() function will return zero.  Otherwise
     an	error number will be returned to indicate the error.

ERRORS
     The pthread_create() function will	fail if:

     [EAGAIN]		The system lacked the necessary	resources to create
			another	thread,	or the system-imposed limit on the to-
			tal number of threads in a process
			[PTHREAD_THREADS_MAX] would be exceeded.

     [EPERM]		The caller does	not have appropriate permission	to set
			the required scheduling	parameters or scheduling pol-
			icy.

     [EINVAL]		The value specified by attr is invalid.

SEE ALSO
     fork(2), pthread_attr(3), pthread_cleanup_pop(3),
     pthread_cleanup_push(3), pthread_exit(3), pthread_join(3)

STANDARDS
     The pthread_create() function conforms to ISO/IEC 9945-1:1996
     ("POSIX.1").

BSD			       November	4, 2006				   BSD

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | STANDARDS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=pthread_create&sektion=3&manpath=FreeBSD+10.0-RELEASE>

home | help