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/** @file
* MS COM / XPCOM Abstraction Layer:
* COM initialization / shutdown
*/
/*
* Copyright (C) 2005-2012 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#ifndef ___VBox_com_com_h
#define ___VBox_com_com_h
#include "VBox/com/defs.h"
namespace com
{
/**
* Initializes the COM runtime.
* Must be called on the main thread, before any COM activity in any thread, and by any thread
* willing to perform COM operations.
*
* @param fMain if call is performed on the GUI thread
* @return COM result code
*/
HRESULT Initialize(bool fGui = false);
/**
* Shuts down the COM runtime.
* Must be called on the main thread before termination.
* No COM calls may be made in any thread after this method returns.
*/
HRESULT Shutdown();
/**
* Resolves a given interface ID to a string containing the interface name.
* If, for some reason, the given IID cannot be resolved to a name, a NULL
* string is returned. A non-NULL string returned by this function must be
* freed using SysFreeString().
*
* @param aIID ID of the interface to get a name for
* @param aName Resolved interface name or @c NULL on error
*/
void GetInterfaceNameByIID(const GUID &aIID, BSTR *aName);
/**
* Returns the VirtualBox user home directory.
*
* On failure, this function will return a path that caused a failure (or
* NULL if the failure is not path-related).
*
* On success, this function will try to create the returned directory if it
* doesn't exist yet. This may also fail with the corresponding status code.
*
* If @a aDirLen is smaller than RTPATH_MAX then there is a great chance that
* this method will return VERR_BUFFER_OVERFLOW.
*
* @param aDir Buffer to store the directory string in UTF-8 encoding.
* @param aDirLen Length of the supplied buffer including space for the
* terminating null character, in bytes.
* @param fCreateDir Flag whether to create the returned directory on success if it
* doesn't exist.
* @return VBox status code.
*/
int GetVBoxUserHomeDirectory(char *aDir, size_t aDirLen, bool fCreateDir = true);
/**
* Creates a release log file, used both in VBoxSVC and in API clients.
*
* @param pcszEntity Human readable name of the program.
* @param pcszLogFile Name of the release log file.
* @param fFlags Logger instance flags.
* @param pcszGroupSettings Group logging settings.
* @param pcszEnvVarBase Base environment variable name for the logger.
* @param fDestFlags Logger destination flags.
* @param cMaxEntriesPerGroup Limit for log entries per group. UINT32_MAX for no limit.
* @param cHistory Number of old log files to keep.
* @param uHistoryFileTime Maximum amount of time to put in a log file.
* @param uHistoryFileSize Maximum size of a log file before rotating.
* @param pszError In case of creation failure: buffer for error message.
* @param cbError Size of error message buffer.
* @return VBox status code.
*/
int VBoxLogRelCreate(const char *pcszEntity, const char *pcszLogFile,
uint32_t fFlags, const char *pcszGroupSettings,
const char *pcszEnvVarBase, uint32_t fDestFlags,
uint32_t cMaxEntriesPerGroup, uint32_t cHistory,
uint32_t uHistoryFileTime, uint64_t uHistoryFileSize,
char *pszError, size_t cbError);
} /* namespace com */
#endif
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