sh_mutex keyword

The sh_mutex keyword specifies that a system_handle holds a handle to a mutex.

[system_handle(sh_mutex)]

[system_handle(sh_mutex, access-rights)]

Parameters

This keyword is a parameter for system_handle.

The system_handle documentation also contains details on optional use of the access-rights parameter. The default behavior is DUPLICATE_SAME_ACCESS per DuplicateHandle function specifications.

Remarks

In order to use this keyword with the system_handle attribute, the -target flag must be set to NT100 (or higher) when running midl.exe.

Examples

interface MyInterface : IUnknown                         
{         
    HRESULT WaitOnThisMutex([in, system_handle(sh_mutex)] HANDLE mutex);
}

Requirements

Minimum supported client	Windows 10 Anniversary Update (version 1607, build 14393)
Minimum supported server	Windows Server 2016 (build 14393)

See also

system_handle

Mutex Objects

Synchronization Object Security and Access Rights

CreateMutex function

CreateMutexEx function