RpcSmGetThreadHandle function (rpcndr.h)

The RpcSmGetThreadHandle function returns a thread handle, or NULL, for the stub memory–management environment.


  RPC_STATUS *pStatus



Pointer to the returned status.

Return value

Value Meaning
The call succeeded.
Note  For a list of valid error codes, see RPC Return Values.


Applications call RpcSmGetThreadHandle to obtain a thread handle for the stub memory–management environment. A thread used to manage memory for the stub memory–management environment uses RpcSmGetThreadHandle to receive a handle for its memory environment. In this way, another thread that calls RpcSmSetThreadHandle by using this handle can then use the same memory-management environment.

The same memory management thread handle must be used by multiple threads calling RpcSmAllocate and RpcSmFree in order to manage the same memory. Before spawning new threads to manage the same memory, the thread that established the memory-management environment (parent thread) calls RpcSmGetThreadHandle to obtain a thread handle for this environment. Then, the spawned threads call RpcSmSetThreadHandle with the new manager handle provided by the parent thread.

Typically a server manager procedure calls RpcSmGetThreadHandle before additional threads are spawned. The stub sets up the memory-management environment for the manager procedure, and the manager calls RpcSmGetThreadHandle to make this environment available to the other threads.

A thread can also call RpcSmGetThreadHandle and RpcSmSetThreadHandle to save and restore its memory-management environment.


Minimum supported client Windows 2000 Professional [desktop apps | UWP apps]
Minimum supported server Windows 2000 Server [desktop apps | UWP apps]
Target Platform Windows
Header rpcndr.h (include Rpc.h)
Library Rpcrt4.lib
DLL Rpcrt4.dll

See also