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/** @file
* PDM - Pluggable Device Manager, Threads.
*/
/*
* Copyright (C) 2006-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
#ifndef VBOX_INCLUDED_vmm_pdmthread_h
#define VBOX_INCLUDED_vmm_pdmthread_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <VBox/cdefs.h>
#include <VBox/types.h>
#ifdef IN_RING3
# include <iprt/thread.h>
#endif
RT_C_DECLS_BEGIN
/** @defgroup grp_pdm_thread The PDM Threads API
* @ingroup grp_pdm
* @{
*/
/**
* The thread state
*/
typedef enum PDMTHREADSTATE
{
/** The usual invalid 0 entry. */
PDMTHREADSTATE_INVALID = 0,
/** The thread is initializing.
* Prev state: none
* Next state: suspended, terminating (error) */
PDMTHREADSTATE_INITIALIZING,
/** The thread has been asked to suspend.
* Prev state: running
* Next state: suspended */
PDMTHREADSTATE_SUSPENDING,
/** The thread is supended.
* Prev state: suspending, initializing
* Next state: resuming, terminated. */
PDMTHREADSTATE_SUSPENDED,
/** The thread is active.
* Prev state: suspended
* Next state: running, terminating. */
PDMTHREADSTATE_RESUMING,
/** The thread is active.
* Prev state: resuming
* Next state: suspending, terminating. */
PDMTHREADSTATE_RUNNING,
/** The thread has been asked to terminate.
* Prev state: initializing, suspended, resuming, running
* Next state: terminated. */
PDMTHREADSTATE_TERMINATING,
/** The thread is terminating / has terminated.
* Prev state: terminating
* Next state: none */
PDMTHREADSTATE_TERMINATED,
/** The usual 32-bit hack. */
PDMTHREADSTATE_32BIT_HACK = 0x7fffffff
} PDMTHREADSTATE;
/** A pointer to a PDM thread. */
typedef R3PTRTYPE(struct PDMTHREAD *) PPDMTHREAD;
/** A pointer to a pointer to a PDM thread. */
typedef PPDMTHREAD *PPPDMTHREAD;
/**
* PDM thread, device variation.
*
* @returns VBox status code.
* @param pDevIns The device instance.
* @param pThread The PDM thread data.
*/
typedef DECLCALLBACKTYPE(int, FNPDMTHREADDEV,(PPDMDEVINS pDevIns, PPDMTHREAD pThread));
/** Pointer to a FNPDMTHREADDEV(). */
typedef FNPDMTHREADDEV *PFNPDMTHREADDEV;
/**
* PDM thread, USB device variation.
*
* @returns VBox status code.
* @param pUsbIns The USB device instance.
* @param pThread The PDM thread data.
*/
typedef DECLCALLBACKTYPE(int, FNPDMTHREADUSB,(PPDMUSBINS pUsbIns, PPDMTHREAD pThread));
/** Pointer to a FNPDMTHREADUSB(). */
typedef FNPDMTHREADUSB *PFNPDMTHREADUSB;
/**
* PDM thread, driver variation.
*
* @returns VBox status code.
* @param pDrvIns The driver instance.
* @param pThread The PDM thread data.
*/
typedef DECLCALLBACKTYPE(int, FNPDMTHREADDRV,(PPDMDRVINS pDrvIns, PPDMTHREAD pThread));
/** Pointer to a FNPDMTHREADDRV(). */
typedef FNPDMTHREADDRV *PFNPDMTHREADDRV;
/**
* PDM thread, driver variation.
*
* @returns VBox status code.
* @param pVM The cross context VM structure.
* @param pThread The PDM thread data.
*/
typedef DECLCALLBACKTYPE(int, FNPDMTHREADINT,(PVM pVM, PPDMTHREAD pThread));
/** Pointer to a FNPDMTHREADINT(). */
typedef FNPDMTHREADINT *PFNPDMTHREADINT;
/**
* PDM thread, driver variation.
*
* @returns VBox status code.
* @param pThread The PDM thread data.
*/
typedef int FNPDMTHREADEXT(PPDMTHREAD pThread);
/** Pointer to a FNPDMTHREADEXT(). */
typedef FNPDMTHREADEXT *PFNPDMTHREADEXT;
/**
* PDM thread wakeup call, device variation.
*
* @returns VBox status code.
* @param pDevIns The device instance.
* @param pThread The PDM thread data.
*/
typedef DECLCALLBACKTYPE(int, FNPDMTHREADWAKEUPDEV,(PPDMDEVINS pDevIns, PPDMTHREAD pThread));
/** Pointer to a FNPDMTHREADDEV(). */
typedef FNPDMTHREADWAKEUPDEV *PFNPDMTHREADWAKEUPDEV;
/**
* PDM thread wakeup call, device variation.
*
* @returns VBox status code.
* @param pUsbIns The USB device instance.
* @param pThread The PDM thread data.
*/
typedef DECLCALLBACKTYPE(int, FNPDMTHREADWAKEUPUSB,(PPDMUSBINS pUsbIns, PPDMTHREAD pThread));
/** Pointer to a FNPDMTHREADUSB(). */
typedef FNPDMTHREADWAKEUPUSB *PFNPDMTHREADWAKEUPUSB;
/**
* PDM thread wakeup call, driver variation.
*
* @returns VBox status code.
* @param pDrvIns The driver instance.
* @param pThread The PDM thread data.
*/
typedef DECLCALLBACKTYPE(int, FNPDMTHREADWAKEUPDRV,(PPDMDRVINS pDrvIns, PPDMTHREAD pThread));
/** Pointer to a FNPDMTHREADDRV(). */
typedef FNPDMTHREADWAKEUPDRV *PFNPDMTHREADWAKEUPDRV;
/**
* PDM thread wakeup call, internal variation.
*
* @returns VBox status code.
* @param pVM The cross context VM structure.
* @param pThread The PDM thread data.
*/
typedef DECLCALLBACKTYPE(int, FNPDMTHREADWAKEUPINT,(PVM pVM, PPDMTHREAD pThread));
/** Pointer to a FNPDMTHREADWAKEUPINT(). */
typedef FNPDMTHREADWAKEUPINT *PFNPDMTHREADWAKEUPINT;
/**
* PDM thread wakeup call, external variation.
*
* @returns VBox status code.
* @param pThread The PDM thread data.
*/
typedef int FNPDMTHREADWAKEUPEXT(PPDMTHREAD pThread);
/** Pointer to a FNPDMTHREADEXT(). */
typedef FNPDMTHREADWAKEUPEXT *PFNPDMTHREADWAKEUPEXT;
/**
* PDM Thread instance data.
*/
typedef struct PDMTHREAD
{
/** PDMTHREAD_VERSION. */
uint32_t u32Version;
/** The thread state. */
PDMTHREADSTATE volatile enmState;
/** The thread handle. */
RTTHREAD Thread;
/** The user parameter. */
R3PTRTYPE(void *) pvUser;
/** Data specific to the kind of thread.
* This should really be in PDMTHREADINT, but is placed here because of the
* function pointer typedefs. So, don't touch these, please.
*/
union
{
/** PDMTHREADTYPE_DEVICE data. */
struct
{
/** The device instance. */
PPDMDEVINSR3 pDevIns;
/** The thread function. */
R3PTRTYPE(PFNPDMTHREADDEV) pfnThread;
/** Thread. */
R3PTRTYPE(PFNPDMTHREADWAKEUPDEV) pfnWakeUp;
} Dev;
/** PDMTHREADTYPE_USB data. */
struct
{
/** The device instance. */
PPDMUSBINS pUsbIns;
/** The thread function. */
R3PTRTYPE(PFNPDMTHREADUSB) pfnThread;
/** Thread. */
R3PTRTYPE(PFNPDMTHREADWAKEUPUSB) pfnWakeUp;
} Usb;
/** PDMTHREADTYPE_DRIVER data. */
struct
{
/** The driver instance. */
R3PTRTYPE(PPDMDRVINS) pDrvIns;
/** The thread function. */
R3PTRTYPE(PFNPDMTHREADDRV) pfnThread;
/** Thread. */
R3PTRTYPE(PFNPDMTHREADWAKEUPDRV) pfnWakeUp;
} Drv;
/** PDMTHREADTYPE_INTERNAL data. */
struct
{
/** The thread function. */
R3PTRTYPE(PFNPDMTHREADINT) pfnThread;
/** Thread. */
R3PTRTYPE(PFNPDMTHREADWAKEUPINT) pfnWakeUp;
} Int;
/** PDMTHREADTYPE_EXTERNAL data. */
struct
{
/** The thread function. */
R3PTRTYPE(PFNPDMTHREADEXT) pfnThread;
/** Thread. */
R3PTRTYPE(PFNPDMTHREADWAKEUPEXT) pfnWakeUp;
} Ext;
} u;
/** Internal data. */
union
{
#ifdef PDMTHREADINT_DECLARED
PDMTHREADINT s;
#endif
uint8_t padding[64];
} Internal;
} PDMTHREAD;
/** PDMTHREAD::u32Version value. */
#define PDMTHREAD_VERSION PDM_VERSION_MAKE(0xefff, 1, 0)
#ifdef IN_RING3
VMMR3DECL(int) PDMR3ThreadCreate(PVM pVM, PPPDMTHREAD ppThread, void *pvUser, PFNPDMTHREADINT pfnThread,
PFNPDMTHREADWAKEUPINT pfnWakeUp, size_t cbStack, RTTHREADTYPE enmType, const char *pszName);
VMMR3DECL(int) PDMR3ThreadCreateExternal(PVM pVM, PPPDMTHREAD ppThread, void *pvUser, PFNPDMTHREADEXT pfnThread,
PFNPDMTHREADWAKEUPEXT pfnWakeUp, size_t cbStack, RTTHREADTYPE enmType, const char *pszName);
VMMR3DECL(int) PDMR3ThreadDestroy(PPDMTHREAD pThread, int *pRcThread);
VMMR3DECL(int) PDMR3ThreadIAmSuspending(PPDMTHREAD pThread);
VMMR3DECL(int) PDMR3ThreadIAmRunning(PPDMTHREAD pThread);
VMMR3DECL(int) PDMR3ThreadSleep(PPDMTHREAD pThread, RTMSINTERVAL cMillies);
VMMR3DECL(int) PDMR3ThreadSuspend(PPDMTHREAD pThread);
VMMR3DECL(int) PDMR3ThreadResume(PPDMTHREAD pThread);
#endif /* IN_RING3 */
/** @} */
RT_C_DECLS_END
#endif /* !VBOX_INCLUDED_vmm_pdmthread_h */
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