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pthread_rwlock_setname_np(3)


NAME

  pthread_rwlock_setname_np - Changes the object name in a read-write lock
  object


SYNOPSIS

  #include <pthread.h>

  int pthread_rwlock_setname_np(
	  pthread_rwlock_t *rwlock,
	  const char *name,
	  void *mbz );


LIBRARY

  DECthreads POSIX 1003.1c Library (libpthread.so)


PARAMETERS

  rwlock
      Read-write lock object whose object name is to be changed.

  name
      Object name value to copy into the read-write lock object.

  mbz Reserved for future use. The value must be zero (0).


DESCRIPTION

  This routine changes the object name in the read-write lock object
  specified by rwlock to the value specified by name.  To set a new read-
  write lock object's object name, call this routine immediately after
  initializing the read-write lock object.

  The object name is a C language string and provides an identifier that is
  meaningful to a person debugging a DECthreads-based multithreaded
  application.	The maximum number of characters in the object name is 31.


RETURN VALUES

  If an error condition occurs, this routine returns an integer value
  indicating the type of error. Possible return values are as follows:

  0   Successful completion.

  [EINVAL]
      The value specified by rwlock is invalid, or the length in characters
      of name exceeds 31.

  [ENOMEM]
      Insufficient memory exists to create a copy of the object name string.


ERRORS

  None


SEE ALSO

  Functions: pthread_rwlock_getname_np(3), pthread_rwlock_init(3)

  Manuals: Guide to DECthreads and Programmer's Guide

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