libmlib_mt(3LIB) Interface Libraries libmlib_mt(3LIB)NAMElibmlib_mt - multi-threaded mediaLib
SYNOPSIS
cc [ flag... ] file... -lmlib_mt-lmlib [ library... ]
#include <mlib.h>
DESCRIPTION
Interfaces in this library provide functions for multimedia processing.
Multi-threaded (MT) mediaLib is a software layer developed on top of
mediaLib using OpenMP. When it is used with a large data set on a
multi-processor system, MT mediaLib will partition data into subsets
and process the subsets in parallel, thus greatly improving performance
of applications that use mediaLib.
INTERFACES
The shared object libmlib_mt.so.2 provides the same public interfaces
as those defined in libmlib(3LIB). See Intro(3) for additional informa‐
tion on shared object interfaces.
USAGE
There are two ways to use MT mediaLib.
1. Pre-load a multi-threaded mediaLib library during runtime by
setting the LD_PRELOAD environment variable as follows
before starting your application, in Bourne/Korn shell:
LD_PRELOAD=libmlib_mt.so
export LD_PRELOAD
or in C shell:
setenv LD_PRELOAD libmlib_mt.so
In this way, you can take advantage of MT mediaLib without
rebuilding your application.
2. Link your application with a multi-threaded mediaLib library
directly as shown under SYNOPSIS. In this way, an MT medi‐
aLib library is always used whenever your application is
started.
The parallelization of MT mediaLib is controlled, in part, by the PAR‐
ALLEL environment variable. You can change its setting to adjust the
degree of parallelization before starting your application, in
Bourne/Korn shell:
PARALLEL=n
export PARALLEL
or in C shell:
setenv PARALLEL n
where n is a positive integer for number of threads. Note that other
factors also affect the degree of parallelization in MT mediaLib.
FILES
/usr/lib/libmlib_mt.so.2
shared object
/usr/lib/64/libmlib_mt.so.2
64-bit shared object
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Availability │library/medialib │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOIntro(3), libmlib(3LIB), attributes(5)
mediaLib User's Manual
SunOS 5.11 15 Oct 2007 libmlib_mt(3LIB)
