MATLAB®

mexMakeArrayPersistent (C and Fortran) - Make mxArray persist after MEX-file completes

C Syntax

#include "mex.h"
void mexMakeArrayPersistent(mxArray *pm);

Fortran Syntax

mexMakeArrayPersistent(pm)
mwPointer pm

Arguments

pm

Pointer to an mxArray created by an mxCreate* function

Description

By default, an mxArrayallocated by an mxCreate* function is not persistent. The MATLAB memory management facility automatically frees a nonpersistent mxArray when the MEX-function finishes. If you want the mxArray to persist through multiple invocations of the MEX-function, you must call the mexMakeArrayPersistent function.

Note   If you create a persistent mxArray, you are responsible for destroying it using mxDestroyArray when the MEX-file is cleared. If you do not destroy a persistent mxArray, MATLAB leaks memory. See mexAtExit to see how to register a function that gets called when the MEX-file is cleared. See mexLock to see how to lock your MEX-file so that it is never cleared.

See Also

mexAtExit, mxDestroyArray, mexLock, mexMakeMemoryPersistent, and the mxCreate* functions

mexLock (C and Fortran)

mexMakeMemoryPersistent (C and Fortran)