| 1 | /** @file
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| 2 | * PDM - Pluggable Device Manager, Threads.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2006-2019 Oracle Corporation
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| 7 | *
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| 8 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 9 | * available from http://www.virtualbox.org. This file is free software;
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| 10 | * you can redistribute it and/or modify it under the terms of the GNU
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| 11 | * General Public License (GPL) as published by the Free Software
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| 12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 15 | *
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| 16 | * The contents of this file may alternatively be used under the terms
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| 17 | * of the Common Development and Distribution License Version 1.0
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| 18 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 19 | * VirtualBox OSE distribution, in which case the provisions of the
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| 20 | * CDDL are applicable instead of those of the GPL.
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| 21 | *
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| 22 | * You may elect to license modified versions of this file under the
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| 23 | * terms and conditions of either the GPL or the CDDL or both.
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| 24 | */
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| 25 |
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| 26 | #ifndef VBOX_INCLUDED_vmm_pdmthread_h
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| 27 | #define VBOX_INCLUDED_vmm_pdmthread_h
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| 28 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 29 | # pragma once
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| 30 | #endif
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| 31 |
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| 32 | #include <VBox/cdefs.h>
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| 33 | #include <VBox/types.h>
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| 34 | #ifdef IN_RING3
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| 35 | # include <iprt/thread.h>
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| 36 | #endif
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| 37 |
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| 38 | RT_C_DECLS_BEGIN
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| 39 |
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| 40 | /** @defgroup grp_pdm_thread The PDM Threads API
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| 41 | * @ingroup grp_pdm
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| 42 | * @{
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| 43 | */
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| 44 |
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| 45 | /**
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| 46 | * The thread state
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| 47 | */
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| 48 | typedef enum PDMTHREADSTATE
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| 49 | {
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| 50 | /** The usual invalid 0 entry. */
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| 51 | PDMTHREADSTATE_INVALID = 0,
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| 52 | /** The thread is initializing.
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| 53 | * Prev state: none
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| 54 | * Next state: suspended, terminating (error) */
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| 55 | PDMTHREADSTATE_INITIALIZING,
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| 56 | /** The thread has been asked to suspend.
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| 57 | * Prev state: running
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| 58 | * Next state: suspended */
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| 59 | PDMTHREADSTATE_SUSPENDING,
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| 60 | /** The thread is supended.
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| 61 | * Prev state: suspending, initializing
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| 62 | * Next state: resuming, terminated. */
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| 63 | PDMTHREADSTATE_SUSPENDED,
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| 64 | /** The thread is active.
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| 65 | * Prev state: suspended
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| 66 | * Next state: running, terminating. */
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| 67 | PDMTHREADSTATE_RESUMING,
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| 68 | /** The thread is active.
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| 69 | * Prev state: resuming
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| 70 | * Next state: suspending, terminating. */
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| 71 | PDMTHREADSTATE_RUNNING,
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| 72 | /** The thread has been asked to terminate.
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| 73 | * Prev state: initializing, suspended, resuming, running
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| 74 | * Next state: terminated. */
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| 75 | PDMTHREADSTATE_TERMINATING,
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| 76 | /** The thread is terminating / has terminated.
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| 77 | * Prev state: terminating
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| 78 | * Next state: none */
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| 79 | PDMTHREADSTATE_TERMINATED,
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| 80 | /** The usual 32-bit hack. */
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| 81 | PDMTHREADSTATE_32BIT_HACK = 0x7fffffff
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| 82 | } PDMTHREADSTATE;
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| 83 |
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| 84 | /** A pointer to a PDM thread. */
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| 85 | typedef R3PTRTYPE(struct PDMTHREAD *) PPDMTHREAD;
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| 86 | /** A pointer to a pointer to a PDM thread. */
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| 87 | typedef PPDMTHREAD *PPPDMTHREAD;
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| 88 |
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| 89 | /**
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| 90 | * PDM thread, device variation.
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| 91 | *
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| 92 | * @returns VBox status code.
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| 93 | * @param pDevIns The device instance.
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| 94 | * @param pThread The PDM thread data.
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| 95 | */
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| 96 | typedef DECLCALLBACK(int) FNPDMTHREADDEV(PPDMDEVINS pDevIns, PPDMTHREAD pThread);
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| 97 | /** Pointer to a FNPDMTHREADDEV(). */
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| 98 | typedef FNPDMTHREADDEV *PFNPDMTHREADDEV;
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| 99 |
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| 100 | /**
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| 101 | * PDM thread, USB device variation.
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| 102 | *
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| 103 | * @returns VBox status code.
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| 104 | * @param pUsbIns The USB device instance.
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| 105 | * @param pThread The PDM thread data.
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| 106 | */
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| 107 | typedef DECLCALLBACK(int) FNPDMTHREADUSB(PPDMUSBINS pUsbIns, PPDMTHREAD pThread);
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| 108 | /** Pointer to a FNPDMTHREADUSB(). */
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| 109 | typedef FNPDMTHREADUSB *PFNPDMTHREADUSB;
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| 110 |
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| 111 | /**
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| 112 | * PDM thread, driver variation.
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| 113 | *
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| 114 | * @returns VBox status code.
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| 115 | * @param pDrvIns The driver instance.
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| 116 | * @param pThread The PDM thread data.
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| 117 | */
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| 118 | typedef DECLCALLBACK(int) FNPDMTHREADDRV(PPDMDRVINS pDrvIns, PPDMTHREAD pThread);
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| 119 | /** Pointer to a FNPDMTHREADDRV(). */
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| 120 | typedef FNPDMTHREADDRV *PFNPDMTHREADDRV;
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| 121 |
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| 122 | /**
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| 123 | * PDM thread, driver variation.
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| 124 | *
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| 125 | * @returns VBox status code.
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| 126 | * @param pVM The cross context VM structure.
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| 127 | * @param pThread The PDM thread data.
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| 128 | */
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| 129 | typedef DECLCALLBACK(int) FNPDMTHREADINT(PVM pVM, PPDMTHREAD pThread);
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| 130 | /** Pointer to a FNPDMTHREADINT(). */
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| 131 | typedef FNPDMTHREADINT *PFNPDMTHREADINT;
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| 132 |
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| 133 | /**
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| 134 | * PDM thread, driver variation.
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| 135 | *
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| 136 | * @returns VBox status code.
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| 137 | * @param pThread The PDM thread data.
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| 138 | */
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| 139 | typedef int FNPDMTHREADEXT(PPDMTHREAD pThread);
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| 140 | /** Pointer to a FNPDMTHREADEXT(). */
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| 141 | typedef FNPDMTHREADEXT *PFNPDMTHREADEXT;
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| 142 |
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| 143 |
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| 144 |
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| 145 | /**
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| 146 | * PDM thread wakeup call, device variation.
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| 147 | *
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| 148 | * @returns VBox status code.
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| 149 | * @param pDevIns The device instance.
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| 150 | * @param pThread The PDM thread data.
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| 151 | */
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| 152 | typedef DECLCALLBACK(int) FNPDMTHREADWAKEUPDEV(PPDMDEVINS pDevIns, PPDMTHREAD pThread);
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| 153 | /** Pointer to a FNPDMTHREADDEV(). */
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| 154 | typedef FNPDMTHREADWAKEUPDEV *PFNPDMTHREADWAKEUPDEV;
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| 155 |
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| 156 | /**
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| 157 | * PDM thread wakeup call, device variation.
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| 158 | *
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| 159 | * @returns VBox status code.
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| 160 | * @param pUsbIns The USB device instance.
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| 161 | * @param pThread The PDM thread data.
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| 162 | */
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| 163 | typedef DECLCALLBACK(int) FNPDMTHREADWAKEUPUSB(PPDMUSBINS pUsbIns, PPDMTHREAD pThread);
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| 164 | /** Pointer to a FNPDMTHREADUSB(). */
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| 165 | typedef FNPDMTHREADWAKEUPUSB *PFNPDMTHREADWAKEUPUSB;
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| 166 |
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| 167 | /**
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| 168 | * PDM thread wakeup call, driver variation.
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| 169 | *
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| 170 | * @returns VBox status code.
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| 171 | * @param pDrvIns The driver instance.
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| 172 | * @param pThread The PDM thread data.
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| 173 | */
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| 174 | typedef DECLCALLBACK(int) FNPDMTHREADWAKEUPDRV(PPDMDRVINS pDrvIns, PPDMTHREAD pThread);
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| 175 | /** Pointer to a FNPDMTHREADDRV(). */
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| 176 | typedef FNPDMTHREADWAKEUPDRV *PFNPDMTHREADWAKEUPDRV;
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| 177 |
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| 178 | /**
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| 179 | * PDM thread wakeup call, internal variation.
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| 180 | *
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| 181 | * @returns VBox status code.
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| 182 | * @param pVM The cross context VM structure.
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| 183 | * @param pThread The PDM thread data.
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| 184 | */
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| 185 | typedef DECLCALLBACK(int) FNPDMTHREADWAKEUPINT(PVM pVM, PPDMTHREAD pThread);
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| 186 | /** Pointer to a FNPDMTHREADWAKEUPINT(). */
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| 187 | typedef FNPDMTHREADWAKEUPINT *PFNPDMTHREADWAKEUPINT;
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| 188 |
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| 189 | /**
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| 190 | * PDM thread wakeup call, external variation.
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| 191 | *
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| 192 | * @returns VBox status code.
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| 193 | * @param pThread The PDM thread data.
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| 194 | */
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| 195 | typedef int FNPDMTHREADWAKEUPEXT(PPDMTHREAD pThread);
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| 196 | /** Pointer to a FNPDMTHREADEXT(). */
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| 197 | typedef FNPDMTHREADWAKEUPEXT *PFNPDMTHREADWAKEUPEXT;
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| 198 |
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| 199 |
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| 200 | /**
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| 201 | * PDM Thread instance data.
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| 202 | */
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| 203 | typedef struct PDMTHREAD
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| 204 | {
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| 205 | /** PDMTHREAD_VERSION. */
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| 206 | uint32_t u32Version;
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| 207 | /** The thread state. */
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| 208 | PDMTHREADSTATE volatile enmState;
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| 209 | /** The thread handle. */
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| 210 | RTTHREAD Thread;
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| 211 | /** The user parameter. */
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| 212 | R3PTRTYPE(void *) pvUser;
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| 213 | /** Data specific to the kind of thread.
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| 214 | * This should really be in PDMTHREADINT, but is placed here because of the
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| 215 | * function pointer typedefs. So, don't touch these, please.
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| 216 | */
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| 217 | union
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| 218 | {
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| 219 | /** PDMTHREADTYPE_DEVICE data. */
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| 220 | struct
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| 221 | {
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| 222 | /** The device instance. */
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| 223 | PPDMDEVINSR3 pDevIns;
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| 224 | /** The thread function. */
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| 225 | R3PTRTYPE(PFNPDMTHREADDEV) pfnThread;
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| 226 | /** Thread. */
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| 227 | R3PTRTYPE(PFNPDMTHREADWAKEUPDEV) pfnWakeUp;
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| 228 | } Dev;
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| 229 |
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| 230 | /** PDMTHREADTYPE_USB data. */
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| 231 | struct
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| 232 | {
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| 233 | /** The device instance. */
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| 234 | PPDMUSBINS pUsbIns;
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| 235 | /** The thread function. */
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| 236 | R3PTRTYPE(PFNPDMTHREADUSB) pfnThread;
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| 237 | /** Thread. */
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| 238 | R3PTRTYPE(PFNPDMTHREADWAKEUPUSB) pfnWakeUp;
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| 239 | } Usb;
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| 240 |
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| 241 | /** PDMTHREADTYPE_DRIVER data. */
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| 242 | struct
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| 243 | {
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| 244 | /** The driver instance. */
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| 245 | R3PTRTYPE(PPDMDRVINS) pDrvIns;
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| 246 | /** The thread function. */
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| 247 | R3PTRTYPE(PFNPDMTHREADDRV) pfnThread;
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| 248 | /** Thread. */
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| 249 | R3PTRTYPE(PFNPDMTHREADWAKEUPDRV) pfnWakeUp;
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| 250 | } Drv;
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| 251 |
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| 252 | /** PDMTHREADTYPE_INTERNAL data. */
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| 253 | struct
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| 254 | {
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| 255 | /** The thread function. */
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| 256 | R3PTRTYPE(PFNPDMTHREADINT) pfnThread;
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| 257 | /** Thread. */
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| 258 | R3PTRTYPE(PFNPDMTHREADWAKEUPINT) pfnWakeUp;
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| 259 | } Int;
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| 260 |
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| 261 | /** PDMTHREADTYPE_EXTERNAL data. */
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| 262 | struct
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| 263 | {
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| 264 | /** The thread function. */
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| 265 | R3PTRTYPE(PFNPDMTHREADEXT) pfnThread;
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| 266 | /** Thread. */
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| 267 | R3PTRTYPE(PFNPDMTHREADWAKEUPEXT) pfnWakeUp;
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| 268 | } Ext;
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| 269 | } u;
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| 270 |
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| 271 | /** Internal data. */
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| 272 | union
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| 273 | {
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| 274 | #ifdef PDMTHREADINT_DECLARED
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| 275 | PDMTHREADINT s;
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| 276 | #endif
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| 277 | uint8_t padding[64];
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| 278 | } Internal;
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| 279 | } PDMTHREAD;
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| 280 |
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| 281 | /** PDMTHREAD::u32Version value. */
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| 282 | #define PDMTHREAD_VERSION PDM_VERSION_MAKE(0xefff, 1, 0)
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| 283 |
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| 284 | #ifdef IN_RING3
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| 285 | VMMR3DECL(int) PDMR3ThreadCreate(PVM pVM, PPPDMTHREAD ppThread, void *pvUser, PFNPDMTHREADINT pfnThread,
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| 286 | PFNPDMTHREADWAKEUPINT pfnWakeUp, size_t cbStack, RTTHREADTYPE enmType, const char *pszName);
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| 287 | VMMR3DECL(int) PDMR3ThreadCreateExternal(PVM pVM, PPPDMTHREAD ppThread, void *pvUser, PFNPDMTHREADEXT pfnThread,
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| 288 | PFNPDMTHREADWAKEUPEXT pfnWakeUp, size_t cbStack, RTTHREADTYPE enmType, const char *pszName);
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| 289 | VMMR3DECL(int) PDMR3ThreadDestroy(PPDMTHREAD pThread, int *pRcThread);
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| 290 | VMMR3DECL(int) PDMR3ThreadIAmSuspending(PPDMTHREAD pThread);
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| 291 | VMMR3DECL(int) PDMR3ThreadIAmRunning(PPDMTHREAD pThread);
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| 292 | VMMR3DECL(int) PDMR3ThreadSleep(PPDMTHREAD pThread, RTMSINTERVAL cMillies);
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| 293 | VMMR3DECL(int) PDMR3ThreadSuspend(PPDMTHREAD pThread);
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| 294 | VMMR3DECL(int) PDMR3ThreadResume(PPDMTHREAD pThread);
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| 295 | #endif /* IN_RING3 */
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| 296 |
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| 297 | /** @} */
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| 298 |
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| 299 | RT_C_DECLS_END
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| 300 |
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| 301 | #endif /* !VBOX_INCLUDED_vmm_pdmthread_h */
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