51 lines
926 B
ReStructuredText
51 lines
926 B
ReStructuredText
PR_OpenAnonFileMap
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==================
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Creates or opens a named semaphore with the specified name
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Syntax
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------
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.. code::
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#include <prshma.h>
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NSPR_API( PRFileMap *)
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PR_OpenAnonFileMap(
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const char *dirName,
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PRSize size,
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PRFileMapProtect prot
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);
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Parameters
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~~~~~~~~~~
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The function has the following parameters:
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``dirName``
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A pointer to a directory name that will contain the anonymous file.
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``size``
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The size of the shared memory.
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``prot``
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How the shared memory is mapped.
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Returns
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~~~~~~~
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Pointer to :ref:`PRFileMap` or ``NULL`` on error.
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Description
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-----------
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If the shared memory already exists, a handle is returned to that shared
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memory object.
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On Unix platforms, :ref:`PR_OpenAnonFileMap` uses ``dirName`` as a
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directory name, without the trailing '/', to contain the anonymous file.
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A filename is generated for the name.
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On Windows platforms, ``dirName`` is ignored.
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