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-rw-r--r-- | docs/nspr/reference/pr_openanonfilemap.rst | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/docs/nspr/reference/pr_openanonfilemap.rst b/docs/nspr/reference/pr_openanonfilemap.rst new file mode 100644 index 0000000000..30964c5dd7 --- /dev/null +++ b/docs/nspr/reference/pr_openanonfilemap.rst @@ -0,0 +1,51 @@ +PR_OpenAnonFileMap +================== + +Creates or opens a named semaphore with the specified name + + +Syntax +------ + +.. code:: + + #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. |