initterm.h revision d4ca82a9febd97e1c848d677f88fccbc05e7f56f
/** @file
* IPRT - Runtime Init/Term.
*/
/*
* Copyright (C) 2006-2009 Sun Microsystems, Inc.
*
* 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.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 USA or visit http://www.sun.com if you need
* additional information or have any questions.
*/
#ifndef ___iprt_initterm_h
#define ___iprt_initterm_h
#include <iprt/cdefs.h>
#include <iprt/types.h>
__BEGIN_DECLS
/** @defgroup grp_rt IPRT APIs
* @{
*/
/** @defgroup grp_rt_initterm Init / Term
* @{
*/
#ifdef IN_RING3
/**
* Initializes the runtime library.
*
* @returns iprt status code.
*/
RTR3DECL(int) RTR3Init(void);
/**
* Initializes the runtime library and try initialize SUPLib too.
*
* @returns IPRT status code.
* @param pszProgramPath The path to the program file.
*
* @remarks Failure to initialize SUPLib is ignored.
*/
RTR3DECL(int) RTR3InitAndSUPLib(void);
/**
* Initializes the runtime library passing it the program path.
*
* @returns IPRT status code.
* @param pszProgramPath The path to the program file.
*/
RTR3DECL(int) RTR3InitWithProgramPath(const char *pszProgramPath);
/**
* Initializes the runtime library passing it the program path,
* and try initialize SUPLib too (failures ignored).
*
* @returns IPRT status code.
* @param pszProgramPath The path to the program file.
*
* @remarks Failure to initialize SUPLib is ignored.
*/
RTR3DECL(int) RTR3InitAndSUPLibWithProgramPath(const char *pszProgramPath);
/**
* Initializes the runtime library and possibly also SUPLib too.
*
* Avoid this interface, it's not considered stable.
*
* @returns IPRT status code.
* @param iVersion The interface version. Must be 0 atm.
* @param pszProgramPath The program path. Pass NULL if we're to figure it out ourselves.
* @param fInitSUPLib Whether to initialize the support library or not.
*/
RTR3DECL(int) RTR3InitEx(uint32_t iVersion, const char *pszProgramPath, bool fInitSUPLib);
/**
* Terminates the runtime library.
*/
RTR3DECL(void) RTR3Term(void);
#endif /* IN_RING3 */
#ifdef IN_RING0
/**
* Initalizes the ring-0 driver runtime library.
*
* @returns iprt status code.
* @param fReserved Flags reserved for the future.
*/
RTR0DECL(int) RTR0Init(unsigned fReserved);
/**
* Terminates the ring-0 driver runtime library.
*/
RTR0DECL(void) RTR0Term(void);
#endif
#ifdef IN_RC
/**
* Initializes the raw-mode context runtime library.
*
* @returns iprt status code.
*
* @param u64ProgramStartNanoTS The startup timestamp.
*/
RTGCDECL(int) RTRCInit(uint64_t u64ProgramStartNanoTS);
/**
* Terminates the raw-mode context runtime library.
*/
RTGCDECL(void) RTRCTerm(void);
#endif
/**
* Termination reason.
*/
typedef enum RTTERMREASON
{
/** Normal exit. iStatus contains the exit code. */
RTTERMREASON_EXIT = 1,
/** Any abnormal exit. iStatus is 0 and has no meaning. */
RTTERMREASON_ABEND,
/** Killed by a signal. The iStatus contains the signal number. */
RTTERMREASON_SIGNAL,
/** The IPRT module is being unloaded. iStatus is 0 and has no meaning. */
RTTERMREASON_UNLOAD
} RTTERMREASON;
/** Whether lazy clean up is Okay or not.
* When the process is exiting, it is a waste of time to for instance free heap
* memory or close open files. OTOH, when the runtime is unloaded from the
* process, it is important to release absolutely all resources to prevent
* resource leaks. */
#define RTTERMREASON_IS_LAZY_CLEANUP_OK(enmReason) ((enmReason) != RTTERMREASON_UNLOAD)
/**
* IPRT termination callback function.
*
* @param enmReason The cause of the termination.
* @param iStatus The meaning of this depends on enmReason.
* @param pvUser User argument passed to RTTermRegisterCallback.
*/
typedef DECLCALLBACK(void) FNRTTERMCALLBACK(RTTERMREASON enmReason, int32_t iStatus, void *pvUser);
/** Pointer to an IPRT termination callback function. */
typedef FNRTTERMCALLBACK *PFNRTTERMCALLBACK;
/**
* Registers a termination callback.
*
* This is intended for performing clean up during IPRT termination. Frequently
* paired with lazy initialization thru RTOnce.
*
* The callbacks are called in LIFO order.
*
* @returns IPRT status code.
*
* @param pfnCallback The callback function.
* @param pvUser The user argument for the callback.
*
* @remarks May need to acquire a fast mutex or critical section, so use with
* some care in ring-0 context.
*
* @remarks Be very careful using this from code that may be unloaded before
* IPRT terminates. Unlike some atexit and on_exit implementations,
* IPRT will not automatically unregister callbacks when a module gets
* unloaded.
*/
RTDECL(int) RTTermRegisterCallback(PFNRTTERMCALLBACK pfnCallback, void *pvUser);
/**
* Deregister a termination callback.
*
* @returns VINF_SUCCESS if found, VERR_NOT_FOUND if the callback/pvUser pair
* wasn't found.
*
* @param pfnCallback The callback function.
* @param pvUser The user argument for the callback.
*/
RTDECL(int) RTTermDeregisterCallback(PFNRTTERMCALLBACK pfnCallback, void *pvUser);
/**
* Runs the termination callback queue.
*
* Normally called by an internal IPRT termination function, but may also be
* called by external code immediately prior to terminating IPRT if it is in a
* better position to state the termination reason and/or status.
*
* @param enmReason The reason why it's called.
* @param iStatus The associated exit status or signal number.
*/
RTDECL(void) RTTermRunCallbacks(RTTERMREASON enmReason, int32_t iStatus);
/** @} */
/** @} */
__END_DECLS
#endif