pthread_getconcurrency man page on DigitalUNIX

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pthread_getconcurrency(3)			     pthread_getconcurrency(3)

NAME
       pthread_getconcurrency  -  Obtains  the	value of the concurrency level
       global variable for this process

SYNOPSIS
       #include <pthread.h>

       int pthread_getconcurrency(
	       void );

LIBRARY
       DECthreads POSIX 1003.1c Library (libpthread.so)

STANDARDS
       Interfaces documented on this reference page conform to industry	 stan‐
       dards as follows:

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

PARAMETERS
       None

DESCRIPTION
       This  routine  obtains and returns the value of the “concurrency level”
       global setting for the calling  thread's	 process.  Because  DECthreads
       automatically manages the concurrency of all threads in a multithreaded
       process, DECthreads ignores this concurrency level value.

       The concurrency level value has no effect on the behavior of  a	multi‐
       threaded	 program  that	uses  DECthreads. This routine is provided for
       Single UNIX Specification, Version 2, source code compatibility and has
       no other effect when called.

       The  initial  concurrency level is zero (0), indicating that DECthreads
       controls the concurrency level.

       The concurrency level can be set	 using	the  pthread_setconcurrency(3)
       routine.

RETURN VALUES
       This  routine  always  returns  the value of this process's concurrency
       level  global  variable.	 If  this  process  has	  never	  called   the
       pthread_setconcurrency(3) routine, this routine returns zero (0).

ERRORS
       None

SEE ALSO
       Functions: pthread_setconcurrency(3)

       Manuals: Guide to DECthreads and Programmer's Guide

						     pthread_getconcurrency(3)
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