pthread_condattr_setpshared(3)				     Library Functions Manual				    pthread_condattr_setpshared(3)

NAME

       pthread_condattr_setpshared - Change the process-shared attribute of a condition variable attributes object.

LIBRARY

       DECthreads POSIX 1003.1c Library (libpthread.so)

SYNOPSIS

       #include <pthread.h>

       int   pthread_condattr_setpshared(
			     pthread_condattr_t        attr,
			     int		       pshared);

PARAMETERS

       Address	of  the  condition  variable  attributes  objects  whose  process-shared attribute is to be set.  New value for the process-shared
       attribute of the condition variable attributes object specified by attr.

DESCRIPTION

       This routine uses the value specified in the pshared argument to set the process-shared attribute  of  the  condition  variable	attributes
       object specified in the attr argument.

       Creating  a  condition  variable whose process-shared attribute is set to PTHREAD_PROCESS_PRIVATE permits it to be operated upon by threads
       created within the same process as the thread that initialized the condition variable.  If threads of differing processes attempt to  oper-
       ate on such a condition variable, the behavior is undefined.

       The default value of the process-shared attribute of an initialized condition variable attributes object is PTHREAD_PROCESS_PRIVATE.

       Creating  a condition variable whose process-shared attribute is set to PTHREAD_PROCESS_SHARED permits it to be operated upon by any thread
       that has access to the memory where that condition variable is allocated, even if it is allocated in memory that is shared by multiple pro-
       cesses.

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 value specified by attr is not a valid attributes object, or the value specified  by  pshared  is  outside  the
       range of legal values for that attribute.

ERRORS

       None

RELATED INFORMATION

       Functions: pthread_condattr_getpshared(3), pthread_condattr_init(3)

       Manuals: Guide to DECthreads and Programmer's Guide

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														    pthread_condattr_setpshared(3)