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                                                            PTHREAD_CREATE(3)

 

NAME

       pthread_create – create a new thread

 

SYNOPSIS

       #include

 

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

 

DESCRIPTION

       pthread_create  creates  a  new  thread  of control that executes concurrently with the calling thread. The new

       thread applies the function start_routine passing it arg as first argument. The new  thread  terminates  either

       explicitly, by calling pthread_exit(3), or implicitly, by returning from the start_routine function. The latter

       case is equivalent to calling pthread_exit(3) with the result returned by start_routine as exit code.

 

       The attr argument specifies thread attributes to be applied to the new thread. See pthread_attr_init(3)  for  a

       complete  list  of  thread attributes. The attr argument can also be NULL, in which case default attributes are

       used: the created thread is joinable (not detached) and has default (non real-time) scheduling policy.

 

RETURN VALUE

       On success, the identifier of the newly created thread is stored in the location pointed by  the  thread  argu-

       ment, and a 0 is returned. On error, a non-zero error code is returned.

 

ERRORS

       EAGAIN not enough system resources to create a process for the new thread.

 

       EAGAIN more than PTHREAD_THREADS_MAX threads are already active.

 

AUTHOR

       Xavier Leroy

 

SEE ALSO

       pthread_exit(3), pthread_join(3), pthread_detach(3), pthread_attr_init(3).