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| -rw-r--r-- | include/VBox/vmm/pdmthread.h | 311 |
1 files changed, 311 insertions, 0 deletions
diff --git a/include/VBox/vmm/pdmthread.h b/include/VBox/vmm/pdmthread.h new file mode 100644 index 00000000..1163f163 --- /dev/null +++ b/include/VBox/vmm/pdmthread.h @@ -0,0 +1,311 @@ +/** @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 */ |