79 lines
3.7 KiB
C
79 lines
3.7 KiB
C
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// Copyright (c) 1999 Microsoft Corporation. All rights reserved.
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//
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// Declaration of CSingleThreadedScriptManager.
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// Wraps CActiveScriptManager to accept calls from multiple scripts and behind the
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// scenes farms them out to a single worker thread that actually talks to the script engine.
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//
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// The virtual base class ScriptManager can be used to talk to either
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// CActiveScriptManager or CSingleThreadedActiveScriptManager.
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//
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#pragma once
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#include "workthread.h"
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// forward declaration
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class CDirectMusicScript;
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class ScriptManager
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{
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public:
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virtual HRESULT Start(DMUS_SCRIPT_ERRORINFO *pErrorInfo) = 0;
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virtual HRESULT CallRoutine(const WCHAR *pwszRoutineName, DMUS_SCRIPT_ERRORINFO *pErrorInfo) = 0;
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virtual HRESULT ScriptTrackCallRoutine(
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const WCHAR *pwszRoutineName,
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IDirectMusicSegmentState *pSegSt,
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DWORD dwVirtualTrackID,
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bool fErrorPMsgsEnabled,
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__int64 i64IntendedStartTime,
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DWORD dwIntendedStartTimeFlags) = 0;
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virtual HRESULT SetVariable(const WCHAR *pwszVariableName, VARIANT varValue, bool fSetRef, DMUS_SCRIPT_ERRORINFO *pErrorInfo) = 0;
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virtual HRESULT GetVariable(const WCHAR *pwszVariableName, VARIANT *pvarValue, DMUS_SCRIPT_ERRORINFO *pErrorInfo) = 0;
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virtual HRESULT EnumItem(bool fRoutine, DWORD dwIndex, WCHAR *pwszName, int *pcItems) = 0; // fRoutine true to get a routine, false to get a variable. pcItems (if supplied) is set to the total number of items
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virtual HRESULT DispGetIDsOfNames(REFIID riid, LPOLESTR __RPC_FAR *rgszNames, UINT cNames, LCID lcid, DISPID __RPC_FAR *rgDispId) = 0;
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virtual HRESULT DispInvoke(DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS __RPC_FAR *pDispParams, VARIANT __RPC_FAR *pVarResult, EXCEPINFO __RPC_FAR *pExcepInfo, UINT __RPC_FAR *puArgErr) = 0;
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virtual void Close() = 0;
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STDMETHOD_(ULONG, Release)() = 0;
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};
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// VBScript (and likely any other scripting languages besides our custom engine) fails if called from different threads.
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// This class wraps such an engine, providing a ScriptManager interface that can be called from multiple threads but marshals
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// all the calls to the engine onto a single worker thread.
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class CSingleThreadedScriptManager : public ScriptManager
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{
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public:
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// The worker thread needs to be cleaned up using the static member function before the .dll is unloaded.
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static void TerminateThread() { ms_Thread.Terminate(true); }
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CSingleThreadedScriptManager(
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bool fUseOleAut,
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const WCHAR *pwszLanguage,
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const WCHAR *pwszSource,
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CDirectMusicScript *pParentScript,
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HRESULT *phr,
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DMUS_SCRIPT_ERRORINFO *pErrorInfo);
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HRESULT Start(DMUS_SCRIPT_ERRORINFO *pErrorInfo);
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HRESULT CallRoutine(const WCHAR *pwszRoutineName, DMUS_SCRIPT_ERRORINFO *pErrorInfo);
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HRESULT ScriptTrackCallRoutine(
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const WCHAR *pwszRoutineName,
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IDirectMusicSegmentState *pSegSt,
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DWORD dwVirtualTrackID,
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bool fErrorPMsgsEnabled,
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__int64 i64IntendedStartTime,
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DWORD dwIntendedStartTimeFlags);
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HRESULT SetVariable(const WCHAR *pwszVariableName, VARIANT varValue, bool fSetRef, DMUS_SCRIPT_ERRORINFO *pErrorInfo);
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HRESULT GetVariable(const WCHAR *pwszVariableName, VARIANT *pvarValue, DMUS_SCRIPT_ERRORINFO *pErrorInfo);
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HRESULT EnumItem(bool fRoutine, DWORD dwIndex, WCHAR *pwszName, int *pcItems);
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HRESULT DispGetIDsOfNames(REFIID riid, LPOLESTR __RPC_FAR *rgszNames, UINT cNames, LCID lcid, DISPID __RPC_FAR *rgDispId);
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HRESULT DispInvoke(DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS __RPC_FAR *pDispParams, VARIANT __RPC_FAR *pVarResult, EXCEPINFO __RPC_FAR *pExcepInfo, UINT __RPC_FAR *puArgErr);
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void Close();
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STDMETHOD_(ULONG, Release)();
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private:
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friend void F_Create(void *pvParams);
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static CWorkerThread ms_Thread;
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ScriptManager *m_pScriptManager;
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};
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