summaryrefslogtreecommitdiff
path: root/serial/VirtualSerial/comsup.cpp
diff options
context:
space:
mode:
authorWei Mao <[email protected]>2023-01-11 17:49:06 -0800
committerWei Mao <[email protected]>2023-01-13 00:25:06 -0800
commit5c647868e2f8968e2a490bc02da304020405fcce (patch)
tree55ba978269f447985fe1de794587d0341d29d62d /serial/VirtualSerial/comsup.cpp
parent5bc6b56aef39e19add03297afe0c36168f370dc4 (diff)
[UMDF v1] Remove serial/VirtualSerial/ComPort/virtualserial, fakemodem
Diffstat (limited to 'serial/VirtualSerial/comsup.cpp')
-rw-r--r--serial/VirtualSerial/comsup.cpp344
1 files changed, 0 insertions, 344 deletions
diff --git a/serial/VirtualSerial/comsup.cpp b/serial/VirtualSerial/comsup.cpp
deleted file mode 100644
index fd298470..00000000
--- a/serial/VirtualSerial/comsup.cpp
+++ /dev/null
@@ -1,344 +0,0 @@
-/*++
-
-Copyright (C) Microsoft Corporation, All Rights Reserved
-
-Module Name:
-
- ComSup.cpp
-
-Abstract:
-
- This module contains implementations for the functions and methods
- used for providing COM support.
-
-Environment:
-
- Windows User-Mode Driver Framework (WUDF)
-
---*/
-
-#include "internal.h"
-
-#include "comsup.tmh"
-
-//
-// Implementation of CUnknown methods.
-//
-
-CUnknown::CUnknown(
- VOID
- ) : m_ReferenceCount(1)
-/*++
-
- Routine Description:
-
- Constructor for an instance of the CUnknown class. This simply initializes
- the reference count of the object to 1. The caller is expected to
- call Release() if it wants to delete the object once it has been allocated.
-
- Arguments:
-
- None
-
- Return Value:
-
- None
-
---*/
-{
- // do nothing.
-}
-
-HRESULT
-STDMETHODCALLTYPE
-CUnknown::QueryInterface(
- _In_ REFIID InterfaceId,
- _Out_ PVOID *Object
- )
-/*++
-
- Routine Description:
-
- This method provides the basic support for query interface on CUnknown.
- If the interface requested is IUnknown it references the object and
- returns an interface pointer. Otherwise it returns an error.
-
- Arguments:
-
- InterfaceId - the IID being requested
-
- Object - a location to store the interface pointer to return.
-
- Return Value:
-
- S_OK or E_NOINTERFACE
-
---*/
-{
- if (IsEqualIID(InterfaceId, __uuidof(IUnknown)))
- {
- *Object = QueryIUnknown();
- return S_OK;
- }
- else
- {
- *Object = NULL;
- return E_NOINTERFACE;
- }
-}
-
-IUnknown *
-CUnknown::QueryIUnknown(
- VOID
- )
-/*++
-
- Routine Description:
-
- This helper method references the object and returns a pointer to the
- object's IUnknown interface.
-
- This allows other methods to convert a CUnknown pointer into an IUnknown
- pointer without a typecast and without calling QueryInterface and dealing
- with the return value.
-
- Arguments:
-
- None
-
- Return Value:
-
- A pointer to the object's IUnknown interface.
-
---*/
-{
- AddRef();
- return static_cast<IUnknown *>(this);
-}
-
-ULONG
-STDMETHODCALLTYPE
-CUnknown::AddRef(
- VOID
- )
-/*++
-
- Routine Description:
-
- This method adds one to the object's reference count.
-
- Arguments:
-
- None
-
- Return Value:
-
- The new reference count. The caller should only use this for debugging
- as the object's actual reference count can change while the caller
- examines the return value.
-
---*/
-{
- return InterlockedIncrement(&m_ReferenceCount);
-}
-
-ULONG
-STDMETHODCALLTYPE
-CUnknown::Release(
- VOID
- )
-/*++
-
- Routine Description:
-
- This method subtracts one to the object's reference count. If the count
- goes to zero, this method deletes the object.
-
- Arguments:
-
- None
-
- Return Value:
-
- The new reference count. If the caller uses this value it should only be
- to check for zero (i.e. this call caused or will cause deletion) or
- non-zero (i.e. some other call may have caused deletion, but this one
- didn't).
-
---*/
-{
- ULONG count = InterlockedDecrement(&m_ReferenceCount);
-
- if (count == 0)
- {
- delete this;
- }
- return count;
-}
-
-//
-// Implementation of CClassFactory methods.
-//
-
-//
-// Define storage for the factory's static lock count variable.
-//
-
-LONG CClassFactory::s_LockCount = 0;
-
-IClassFactory *
-CClassFactory::QueryIClassFactory(
- VOID
- )
-/*++
-
- Routine Description:
-
- This helper method references the object and returns a pointer to the
- object's IClassFactory interface.
-
- This allows other methods to convert a CClassFactory pointer into an
- IClassFactory pointer without a typecast and without dealing with the
- return value QueryInterface.
-
- Arguments:
-
- None
-
- Return Value:
-
- A referenced pointer to the object's IClassFactory interface.
-
---*/
-{
- AddRef();
- return static_cast<IClassFactory *>(this);
-}
-
-HRESULT
-CClassFactory::QueryInterface(
- _In_ REFIID InterfaceId,
- _Out_ PVOID *Object
- )
-/*++
-
- Routine Description:
-
- This method attempts to retrieve the requested interface from the object.
-
- If the interface is found then the reference count on that interface (and
- thus the object itself) is incremented.
-
- Arguments:
-
- InterfaceId - the interface the caller is requesting.
-
- Object - a location to store the interface pointer.
-
- Return Value:
-
- S_OK or E_NOINTERFACE
-
---*/
-{
- //
- // This class only supports IClassFactory so check for that.
- //
-
- if (IsEqualIID(InterfaceId, __uuidof(IClassFactory)))
- {
- *Object = QueryIClassFactory();
- return S_OK;
- }
- else
- {
- //
- // See if the base class supports the interface.
- //
-
- return CUnknown::QueryInterface(InterfaceId, Object);
- }
-}
-
-HRESULT
-STDMETHODCALLTYPE
-CClassFactory::CreateInstance(
- _In_opt_ IUnknown * /* OuterObject */,
- _In_ REFIID InterfaceId,
- _Out_ PVOID *Object
- )
-/*++
-
- Routine Description:
-
- This COM method is the factory routine - it creates instances of the driver
- callback class and returns the specified interface on them.
-
- Arguments:
-
- OuterObject - only used for aggregation, which our driver callback class
- does not support.
-
- InterfaceId - the interface ID the caller would like to get from our
- new object.
-
- Object - a location to store the referenced interface pointer to the new
- object.
-
- Return Value:
-
- Status.
-
---*/
-{
- HRESULT hr;
-
- PCMyDriver driver;
-
- *Object = NULL;
-
- hr = CMyDriver::CreateInstance(&driver);
-
- if (SUCCEEDED(hr))
- {
- hr = driver->QueryInterface(InterfaceId, Object);
- driver->Release();
- }
-
- return hr;
-}
-
-HRESULT
-STDMETHODCALLTYPE
-CClassFactory::LockServer(
- _In_ BOOL Lock
- )
-/*++
-
- Routine Description:
-
- This COM method can be used to keep the DLL in memory. However since the
- driver's DllCanUnloadNow function always returns false, this has little
- effect. Still it tracks the number of lock and unlock operations.
-
- Arguments:
-
- Lock - Whether the caller wants to lock or unlock the "server"
-
- Return Value:
-
- S_OK
-
---*/
-{
- if (Lock)
- {
- InterlockedIncrement(&s_LockCount);
- }
- else
- {
- InterlockedDecrement(&s_LockCount);
- }
- return S_OK;
-}
-