sousa-gecko/docs/nspr/reference/pr_openanonfilemap.md

PR_OpenAnonFileMap

Creates or opens a named semaphore with the specified name

Syntax

#include <prshma.h>

NSPR_API( PRFileMap *)
PR_OpenAnonFileMap(
  const char *dirName,
  PRSize size,
  PRFileMapProtect prot
);

Parameters

The function has the following parameters:

dirName

A pointer to a directory name that will contain the anonymous file.

size

The size of the shared memory.

prot

How the shared memory is mapped.

Returns

Pointer to {ref}PRFileMap or NULL on error.

Description

If the shared memory already exists, a handle is returned to that shared memory object.

On Unix platforms, {ref}PR_OpenAnonFileMap uses dirName as a directory name, without the trailing '/', to contain the anonymous file. A filename is generated for the name.

On Windows platforms, dirName is ignored.