pthread_condattr_init(3c) 맨 페이지 - 윈디하나의 솔라나라

개요

섹션
맨 페이지 이름
검색(S)

pthread_condattr_init(3c)

Standard C Library Functions                         pthread_condattr_init(3C)



NAME
       pthread_condattr_init, pthread_condattr_destroy - initialize or destroy
       condition variable attributes object

SYNOPSIS
       #include <pthread.h>

       int pthread_condattr_init(pthread_condattr_t *attr);


       int pthread_condattr_destroy(pthread_condattr_t *attr);

DESCRIPTION
       The pthread_condattr_init() function initializes a  condition  variable
       attributes object attr with the default value for all of the attributes
       defined by the implementation.


       At present, the only attribute available  is  the  scope  of  condition
       variables.  The  default scope of the attribute is PTHREAD_PROCESS_PRI‐
       VATE.


       Attempts  to  initialize  previously  initialized  condition   variable
       attributes object will leave the storage allocated by the previous ini‐
       tialization unallocated.


       After a condition variable attributes object has been used to  initial‐
       ize  one  or  more  condition  variables,  any  function  affecting the
       attributes object (including destruction) does not  affect  any  previ‐
       ously initialized condition variables.


       The  pthread_condattr_destroy()  function destroys a condition variable
       attributes object; the object becomes,  in  effect,  uninitialized.  An
       implementation  may  cause pthread_condattr_destroy() to set the object
       referenced by attr to an invalid value. A destroyed condition  variable
       attributes  object can be re-initialized using pthread_condattr_init();
       the results of otherwise referencing  the  object  after  it  has  been
       destroyed are undefined.


       Additional attributes, their default values, and the names of the asso‐
       ciated functions to get and set those attribute values are  implementa‐
       tion-dependent.

RETURN VALUES
       If    successful,    the   pthread_condattr_init()   and   pthread_con‐
       dattr_destroy() functions return  0.  Otherwise,  an  error  number  is
       returned to indicate the error.

ERRORS
       The pthread_condattr_init() function will fail if:

       ENOMEM    Insufficient  memory exists to initialize the condition vari‐
                 able attributes object.



       The pthread_condattr_destroy() function may fail if:

       EINVAL    The value specified by attr is invalid.


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE  TYPEAT‐
       TRIBUTE  VALUE _ Interface StabilityCommitted _ MT-LevelMT-Safe _ Stan‐
       dardSee standards(7).


SEE ALSO
       pthread_condattr_setpshared(3C),  pthread_cond_init(3C),   pthread_con‐
       dattr_getpshared(3C),    pthread_create(3C),    pthread_mutex_init(3C),
       attributes(7), standards(7)



Oracle Solaris 11.4               16 May 2014        pthread_condattr_init(3C)
맨 페이지 내용의 저작권은 맨 페이지 작성자에게 있습니다.
RSS ATOM XHTML 5 CSS3