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PR_MemUnmap
===========
Unmap a memory region that is backed by a memory-mapped file.
Syntax
------
.. code::
#include <prio.h>
PRStatus PR_MemUnmap(
void *addr,
PRUint32 len);
Parameters
~~~~~~~~~~
The function has the following parameters:
``addr``
The starting address of the memory region to be unmapped.
``len``
The length, in bytes, of the memory region.
Returns
~~~~~~~
The function returns one of the following values:
- If the memory region is successfully unmapped, ``PR_SUCCESS``.
- If the memory region is not successfully unmapped, ``PR_FAILURE``.
The error code can be retrieved via :ref:`PR_GetError`.
Description
-----------
:ref:`PR_MemUnmap` removes the file mapping for the memory region
(``addr``, ``addr + len``). The parameter ``addr`` is the return value
of an earlier call to :ref:`PR_MemMap`.