pthread_setspecific(3) [osf1 man page]

pthread_setspecific(3)					     Library Functions Manual					    pthread_setspecific(3)

NAME

       pthread_setspecific - Sets the thread-specific data value associated with the specified key for the current thread.

LIBRARY

       DECthreads POSIX 1003.1c Library (libpthread.so)

SYNOPSIS

       #include <pthread.h>

       int   pthread_setspecific(
				pthread_key_t	key,
				const void	*value);

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       IEEE Std 1003.1c-1995, POSIX System Application Program Interface

PARAMETERS

       Thread-specific	key  that  identifies  the  thread-specific  data to receive value.  This key value must be obtained from pthread_key_cre-
       ate(3)).  New thread-specific data value to associate with the specified key for the current thread.

DESCRIPTION

       This routine sets the thread-specific data value associated with the specified key for the current thread.  If a value is defined  for  the
       key  in	this  thread  (the  current  value  is	not NULL), the new value is substituted for it.  The key is obtained by a previous call to
       pthread_key_create(3).

       Different threads can bind different values to the same key. These values are typically pointers to blocks of dynamically allocated  memory
       that are reserved for use by the calling thread.

       Do not call this routine from a thread-specific data destructor function.

       Note  that although the type for value (void *) implies that it represents an address, the type is being used as a "universal scalar type."
       DECthreads simply stores value for later retrieval.

RETURN VALUES

       If an error condition occurs, this routine returns an integer value indicating the type of error.  Possible return values are  as  follows:
       Successful completion.  The specified key is invalid.  Insufficient memory exists to associate the value with the key.

ERRORS

       None

RELATED INFORMATION

       Functions: pthread_getspecific(3), pthread_key_create(3), pthread_key_delete(3)

       Manuals: Guide to DECthreads and Programmer's Guide

       delim off

															    pthread_setspecific(3)

pthread_getspecific(3C) 				   Standard C Library Functions 				   pthread_getspecific(3C)

NAME

       pthread_getspecific, pthread_setspecific - manage thread-specific data

SYNOPSIS

       cc -mt [ flag... ] file... -lpthread [ library... ]
       #include <pthread.h>

       int pthread_setspecific(pthread_key_t key, const void *value);

       void *pthread_getspecific(pthread_key_t key);

DESCRIPTION

       The  pthread_setspecific()  function  associates  a thread-specific value with a key obtained by way of a previous call to pthread_key_cre-
       ate(). Different threads may bind different values to the same key. These values are typically pointers to blocks of dynamically  allocated
       memory that have been reserved for use by the calling thread.

       The pthread_getspecific() function returns the value currently bound to the specified key on behalf of the calling thread.

       The  effect  of calling pthread_setspecific() or pthread_getspecific() with a key value not obtained from pthread_key_create() or after key
       has been deleted with pthread_key_delete() is undefined.

       Both pthread_setspecific() and pthread_getspecific() may be called from	a  thread-specific  data  destructor  function.  However,  calling
       pthread_setspecific() from a destructor may result in lost storage or infinite loops.

RETURN VALUES

       The   pthread_getspecific() function returns the thread-specific data value associated with the given key. If no thread-specific data value
       is associated with key, then the value NULL is returned.

       Upon successful completion, the pthread_setspecific() function returns  0. Otherwise, an error number is returned to indicate the error.

ERRORS

       The  pthread_setspecific() function will fail if:

       ENOMEM	 Insufficient memory exists to associate the value with the key.

       The pthread_setspecific() function may fail if:

       EINVAL	 The key value is invalid.

       The  pthread_getspecific() function does not  return errors.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       pthread_key_create(3C), attributes(5), standards(5)

SunOS 5.11							    23 Mar 2005 					   pthread_getspecific(3C)