| 1 | /** @file
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| 2 | * PDM - Pluggable Device Manager, Async I/O Completion.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2007 innotek GmbH
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| 7 | *
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| 8 | * innotek GmbH confidential
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| 9 | * All rights reserved
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| 10 | */
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| 11 |
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| 12 | #ifndef ___VBox_pdmasynccompletion_h
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| 13 | #define ___VBox_pdmasynccompletion_h
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| 14 |
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| 15 | #include <VBox/types.h>
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| 16 |
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| 17 | __BEGIN_DECLS
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| 18 |
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| 19 | /** @defgroup grp_pdm_async_completion Async I/O Completion
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| 20 | * @ingroup grp_pdm
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| 21 | * @{
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| 22 | */
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| 23 |
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| 24 | /** Pointer to a PDM async completion template handle. */
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| 25 | typedef struct PDMASYNCCOMPLETIONTEMPLATE *PPDMASYNCCOMPLETIONTEMPLATE;
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| 26 | /** Pointer to a PDM async completion template handle pointer. */
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| 27 | typedef PPDMASYNCCOMPLETIONTEMPLATE *PPPDMASYNCCOMPLETIONTEMPLATE;
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| 28 |
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| 29 | /** Pointer to a PDM async completion task handle. */
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| 30 | typedef struct PDMASYNCCOMPLETION *PPDMASYNCCOMPLETION;
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| 31 | /** Pointer to a PDM async completion task handle pointer. */
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| 32 | typedef PPDMASYNCCOMPLETION *PPPDMASYNCCOMPLETION;
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| 33 |
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| 34 |
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| 35 | /**
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| 36 | * Completion callback for devices.
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| 37 | *
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| 38 | * @param pDevIns The device instance.
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| 39 | * @param pTask Pointer to the completion task.
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| 40 | * The task is at the time of the call setup to be resumed. So, the callback must
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| 41 | * call PDMR3AsyncCompletionSuspend or PDMR3AsyncCompletionDestroy if any other
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| 42 | * action is wanted upon return.
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| 43 | * @param pvCtx Pointer to any additional, OS specific, completion context. TBD.
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| 44 | * @param pvUser User argument.
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| 45 | */
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| 46 | typedef DECLCALLBACK(void) FNPDMASYNCCOMPLETEDEV(PPDMDEVINS pDevIns, PPDMASYNCCOMPLETION pTask, void *pvCtx, void *pvUser);
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| 47 | /** Pointer to a FNPDMASYNCCOMPLETEDEV(). */
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| 48 | typedef FNPDMASYNCCOMPLETEDEV *PFNPDMASYNCCOMPLETEDEV;
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| 49 |
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| 50 |
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| 51 | /**
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| 52 | * Completion callback for drivers.
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| 53 | *
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| 54 | * @param pDrvIns The driver instance.
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| 55 | * @param pTask Pointer to the completion task.
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| 56 | * The task is at the time of the call setup to be resumed. So, the callback must
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| 57 | * call PDMR3AsyncCompletionSuspend or PDMR3AsyncCompletionDestroy if any other
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| 58 | * action is wanted upon return.
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| 59 | * @param pvCtx Pointer to any additional, OS specific, completion context. TBD.
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| 60 | * @param pvUser User argument.
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| 61 | */
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| 62 | typedef DECLCALLBACK(void) FNPDMASYNCCOMPLETEDRV(PPDMDRVINS pDrvIns, PPDMASYNCCOMPLETION pTask, void *pvCtx, void *pvUser);
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| 63 | /** Pointer to a FNPDMASYNCCOMPLETEDRV(). */
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| 64 | typedef FNPDMASYNCCOMPLETEDRV *PFNPDMASYNCCOMPLETEDRV;
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| 65 |
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| 66 |
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| 67 | /**
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| 68 | * Completion callback for USB devices.
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| 69 | *
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| 70 | * @param pUsbIns The USB device instance.
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| 71 | * @param pTask Pointer to the completion task.
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| 72 | * The task is at the time of the call setup to be resumed. So, the callback must
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| 73 | * call PDMR3AsyncCompletionSuspend or PDMR3AsyncCompletionDestroy if any other
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| 74 | * action is wanted upon return.
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| 75 | * @param pvCtx Pointer to any additional, OS specific, completion context. TBD.
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| 76 | * @param pvUser User argument.
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| 77 | */
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| 78 | typedef DECLCALLBACK(void) FNPDMASYNCCOMPLETEUSB(PPDMUSBINS pUsbIns, PPDMASYNCCOMPLETION pTask, void *pvCtx, void *pvUser);
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| 79 | /** Pointer to a FNPDMASYNCCOMPLETEUSB(). */
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| 80 | typedef FNPDMASYNCCOMPLETEUSB *PFNPDMASYNCCOMPLETEUSB;
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| 81 |
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| 82 |
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| 83 | /**
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| 84 | * Completion callback for internal.
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| 85 | *
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| 86 | * @param pVM Pointer to the shared VM structure.
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| 87 | * @param pTask Pointer to the completion task.
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| 88 | * The task is at the time of the call setup to be resumed. So, the callback must
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| 89 | * call PDMR3AsyncCompletionSuspend or PDMR3AsyncCompletionDestroy if any other
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| 90 | * action is wanted upon return.
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| 91 | * @param pvCtx Pointer to any additional, OS specific, completion context. TBD.
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| 92 | * @param pvUser User argument for the task.
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| 93 | * @param pvUser2 User argument for the template.
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| 94 | */
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| 95 | typedef DECLCALLBACK(void) FNPDMASYNCCOMPLETEINT(PVM pVM, PPDMASYNCCOMPLETION pTask, void *pvCtx, void *pvUser, void *pvUser2);
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| 96 | /** Pointer to a FNPDMASYNCCOMPLETEINT(). */
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| 97 | typedef FNPDMASYNCCOMPLETEINT *PFNPDMASYNCCOMPLETEINT;
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| 98 |
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| 99 |
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| 100 | /**
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| 101 | * Creates a async completion template for a device instance.
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| 102 | *
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| 103 | * The template is used when creating new completion tasks.
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| 104 | *
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| 105 | * @returns VBox status code.
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| 106 | * @param pVM Pointer to the shared VM structure.
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| 107 | * @param pDevIns The device instance.
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| 108 | * @param ppTemplate Where to store the template pointer on success.
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| 109 | * @param pfnCompleted The completion callback routine.
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| 110 | * @param pszDesc Description.
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| 111 | */
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| 112 | PDMR3DECL(int) PDMR3AsyncCompletionTemplateCreateDevice(PVM pVM, PPDMDEVINS pDevIns, PPPDMASYNCCOMPLETIONTEMPLATE ppTemplate, PFNPDMASYNCCOMPLETEDEV pfnCompleted, const char *pszDesc);
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| 113 |
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| 114 | /**
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| 115 | * Creates a async completion template for a driver instance.
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| 116 | *
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| 117 | * The template is used when creating new completion tasks.
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| 118 | *
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| 119 | * @returns VBox status code.
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| 120 | * @param pVM Pointer to the shared VM structure.
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| 121 | * @param pDrvIns The driver instance.
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| 122 | * @param ppTemplate Where to store the template pointer on success.
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| 123 | * @param pfnCompleted The completion callback routine.
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| 124 | * @param pszDesc Description.
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| 125 | */
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| 126 | PDMR3DECL(int) PDMR3AsyncCompletionTemplateCreateDriver(PVM pVM, PPDMDRVINS pDrvIns, PPPDMASYNCCOMPLETIONTEMPLATE ppTemplate, PFNPDMASYNCCOMPLETEDRV pfnCompleted, const char *pszDesc);
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| 127 |
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| 128 | /**
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| 129 | * Creates a async completion template for a USB device instance.
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| 130 | *
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| 131 | * The template is used when creating new completion tasks.
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| 132 | *
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| 133 | * @returns VBox status code.
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| 134 | * @param pVM Pointer to the shared VM structure.
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| 135 | * @param pUsbIns The USB device instance.
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| 136 | * @param ppTemplate Where to store the template pointer on success.
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| 137 | * @param pfnCompleted The completion callback routine.
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| 138 | * @param pszDesc Description.
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| 139 | */
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| 140 | PDMR3DECL(int) PDMR3AsyncCompletionTemplateCreateUsb(PVM pVM, PPDMUSBINS pUsbIns, PPPDMASYNCCOMPLETIONTEMPLATE ppTemplate, PFNPDMASYNCCOMPLETEUSB pfnCompleted, const char *pszDesc);
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| 141 |
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| 142 | /**
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| 143 | * Creates a async completion template for internally by the VMM.
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| 144 | *
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| 145 | * The template is used when creating new completion tasks.
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| 146 | *
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| 147 | * @returns VBox status code.
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| 148 | * @param pVM Pointer to the shared VM structure.
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| 149 | * @param ppTemplate Where to store the template pointer on success.
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| 150 | * @param pfnCompleted The completion callback routine.
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| 151 | * @param pvUser2 The 2nd user argument for the callback.
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| 152 | * @param pszDesc Description.
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| 153 | */
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| 154 | PDMR3DECL(int) PDMR3AsyncCompletionTemplateCreateInternal(PVM pVM, PPPDMASYNCCOMPLETIONTEMPLATE ppTemplate, PFNPDMASYNCCOMPLETEINT pfnCompleted, void *pvUser2, const char *pszDesc);
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| 155 |
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| 156 | /**
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| 157 | * Destroys the specified async completion template.
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| 158 | *
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| 159 | * @returns VBox status codes:
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| 160 | * @retval VINF_SUCCESS on success.
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| 161 | * @retval VERR_PDM_ASYNC_TEMPLATE_BUSY if the template is still in use.
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| 162 | *
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| 163 | * @param pTemplate The template in question.
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| 164 | */
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| 165 | PDMR3DECL(int) PDMR3AsyncCompletionTemplateDestroy(PPDMASYNCCOMPLETIONTEMPLATE pTemplate);
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| 166 |
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| 167 | /**
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| 168 | * Destroys all the specified async completion templates for the given device instance.
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| 169 | *
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| 170 | * @returns VBox status codes:
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| 171 | * @retval VINF_SUCCESS on success.
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| 172 | * @retval VERR_PDM_ASYNC_TEMPLATE_BUSY if one or more of the templates are still in use.
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| 173 | *
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| 174 | * @param pVM Pointer to the shared VM structure.
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| 175 | * @param pDevIns The device instance.
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| 176 | */
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| 177 | PDMR3DECL(int) PDMR3AsyncCompletionTemplateDestroyDevice(PVM pVM, PPDMDEVINS pDevIns);
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| 178 |
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| 179 | /**
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| 180 | * Destroys all the specified async completion templates for the given driver instance.
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| 181 | *
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| 182 | * @returns VBox status codes:
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| 183 | * @retval VINF_SUCCESS on success.
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| 184 | * @retval VERR_PDM_ASYNC_TEMPLATE_BUSY if one or more of the templates are still in use.
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| 185 | *
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| 186 | * @param pVM Pointer to the shared VM structure.
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| 187 | * @param pDrvIns The driver instance.
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| 188 | */
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| 189 | PDMR3DECL(int) PDMR3AsyncCompletionTemplateDestroyDriver(PVM pVM, PPDMDRVINS pDrvIns);
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| 190 |
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| 191 | /**
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| 192 | * Destroys all the specified async completion templates for the given USB device instance.
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| 193 | *
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| 194 | * @returns VBox status codes:
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| 195 | * @retval VINF_SUCCESS on success.
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| 196 | * @retval VERR_PDM_ASYNC_TEMPLATE_BUSY if one or more of the templates are still in use.
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| 197 | *
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| 198 | * @param pVM Pointer to the shared VM structure.
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| 199 | * @param pUsbIns The USB device instance.
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| 200 | */
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| 201 | PDMR3DECL(int) PDMR3AsyncCompletionTemplateDestroyUsb(PVM pVM, PPDMUSBINS pUsbIns);
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| 202 |
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| 203 |
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| 204 | /**
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| 205 | * Socket completion context (pvCtx).
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| 206 | */
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| 207 | typedef struct PDMASYNCCOMPLETIONSOCKET
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| 208 | {
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| 209 | /** The socket. */
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| 210 | RTSOCKET Socket;
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| 211 | /** Readable. */
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| 212 | bool fReadable;
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| 213 | /** Writable. */
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| 214 | bool fWriteable;
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| 215 | /** Exceptions. */
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| 216 | bool fXcpt;
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| 217 | } PDMASYNCCOMPLETIONSOCKET;
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| 218 | /** Pointer to a socket completion context. */
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| 219 | typedef PDMASYNCCOMPLETIONSOCKET *PPDMASYNCCOMPLETIONSOCKET;
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| 220 |
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| 221 |
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| 222 | /**
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| 223 | * Creates a completion task for a socket.
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| 224 | *
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| 225 | * The pvCtx callback argument will be pointing to a PDMASYNCCOMPLETIONSOCKET structure.
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| 226 | *
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| 227 | * @returns VBox status code.
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| 228 | * @param ppTask Where to store the task handle on success.
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| 229 | * @param pTemplate The async completion template.
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| 230 | * @param Socket The socket.
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| 231 | * @param fReadable Whether to callback when the socket becomes readable.
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| 232 | * @param fWriteable Whether to callback when the socket becomes writable.
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| 233 | * @param fXcpt Whether to callback on exception.
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| 234 | * @param pvUser The user argument for the callback.
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| 235 | */
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| 236 | PDMR3DECL(int) PDMR3AsyncCompletionCreateSocket(PPPDMASYNCCOMPLETION ppTask, PPDMASYNCCOMPLETIONTEMPLATE pTemplate, RTSOCKET Socket, bool fReadable, bool fWriteable, bool fXcpt, void *pvUser);
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| 237 |
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| 238 | /**
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| 239 | * Modifies a socket completion task.
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| 240 | *
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| 241 | * @returns VBox status code.
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| 242 | * @retval VINF_SUCCESS on success.
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| 243 | * @retval VERR_NOT_SUPPORTED if the task isn't a socket task.
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| 244 | * @param pTemplate The async completion template.
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| 245 | * @param fReadable Whether to callback when the socket becomes readable.
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| 246 | * @param fWriteable Whether to callback when the socket becomes writable.
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| 247 | * @param fXcpt Whether to callback on exception.
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| 248 | */
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| 249 | PDMR3DECL(int) PDMR3AsyncCompletionModifySocket(PPDMASYNCCOMPLETION pTask, bool fReadable, bool fWriteable, bool fXcpt);
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| 250 |
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| 251 |
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| 252 | #if defined(RT_OS_LINUX) && defined(_AIO_H)
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| 253 | /**
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| 254 | * Creates a completion task for an AIO operation on Linux.
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| 255 | *
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| 256 | * The pvCtx callback argument will be pAioCB.
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| 257 | *
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| 258 | * @returns VBox status code.
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| 259 | * @param ppTask Where to store the task handle on success.
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| 260 | * @param pTemplate The async completion template.
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| 261 | * @param pAioCB The asynchronous I/O control block to wait for.
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| 262 | * @param pvUser The user argument for the callback.
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| 263 | */
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| 264 | PDMR3DECL(int) PDMR3AsyncCompletionCreateLnxAIO(PPPDMASYNCCOMPLETION ppTask, PPDMASYNCCOMPLETIONTEMPLATE pTemplate, const struct aiocb *pAioCB, void *pvUser);
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| 265 | #endif /* RT_OS_LINUX */
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| 266 |
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| 267 | #ifdef RT_OS_OS2
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| 268 | /**
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| 269 | * Creates a completion task for an event semaphore on OS/2.
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| 270 | *
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| 271 | * The pvCtx callback argument will be hev.
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| 272 | *
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| 273 | * @returns VBox status code.
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| 274 | * @param ppTask Where to store the task handle on success.
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| 275 | * @param pTemplate The async completion template.
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| 276 | * @param hev The handle of the event semaphore to wait on.
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| 277 | * @param pvUser The user argument for the callback.
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| 278 | */
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| 279 | PDMR3DECL(int) PDMR3AsyncCompletionCreateOs2Event(PPPDMASYNCCOMPLETION ppTask, PPDMASYNCCOMPLETIONTEMPLATE pTemplate, unsigned long hev, void *pvUser);
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| 280 | #endif /* RT_OS_OS2 */
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| 281 |
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| 282 | #ifdef RT_OS_WINDOWS
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| 283 | /**
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| 284 | * Creates a completion task for an object on Windows.
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| 285 | *
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| 286 | * The pvCtx callback argument will be hObject.
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| 287 | *
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| 288 | * @returns VBox status code.
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| 289 | * @param ppTask Where to store the task handle on success.
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| 290 | * @param pTemplate The async completion template.
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| 291 | * @param hObject The object to wait for.
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| 292 | * @param pvUser The user argument for the callback.
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| 293 | */
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| 294 | PDMR3DECL(int) PDMR3AsyncCompletionCreateWinObject(PPPDMASYNCCOMPLETION ppTask, PPDMASYNCCOMPLETIONTEMPLATE pTemplate, void *hObject, void *pvUser);
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| 295 | #endif /* RT_OS_WINDOWS */
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| 296 |
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| 297 |
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| 298 |
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| 299 | /**
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| 300 | * Sets the user argument of a completion task.
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| 301 | *
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| 302 | * @returns VBox status code.
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| 303 | * @param pTask The async completion task.
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| 304 | * @param pvUser The user argument for the callback.
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| 305 | */
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| 306 | PDMR3DECL(int) PDMR3AsyncCompletionSetUserArg(PPDMASYNCCOMPLETION pTask, void *pvUser);
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| 307 |
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| 308 | /**
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| 309 | * Suspends a async completion task.
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| 310 | *
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| 311 | * @returns VBox status codes:
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| 312 | * @retval VINF_SUCCESS on success.
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| 313 | * @retval VERR_PDM_ASYNC_COMPLETION_ALREADY_SUSPENDED if already suspended.
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| 314 | * @retval VERR_INVALID_HANDLE if pTask is invalid (asserts).
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| 315 | * @param pTask The async completion task.
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| 316 | */
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| 317 | PDMR3DECL(int) PDMR3AsyncCompletionSuspend(PPDMASYNCCOMPLETION pTask);
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| 318 |
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| 319 | /**
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| 320 | * Suspends a async completion task.
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| 321 | *
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| 322 | * @returns VBox status codes:
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| 323 | * @retval VINF_SUCCESS on success.
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| 324 | * @retval VERR_PDM_ASYNC_COMPLETION_NOT_SUSPENDED if not suspended.
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| 325 | * @retval VERR_INVALID_HANDLE if pTask is invalid (asserts).
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| 326 | * @param pTask The async completion task.
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| 327 | */
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| 328 | PDMR3DECL(int) PDMR3AsyncCompletionResume(PPDMASYNCCOMPLETION pTask);
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| 329 |
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| 330 | /**
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| 331 | * Destroys a async completion task.
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| 332 | *
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| 333 | * The task doesn't have to be suspended or anything.
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| 334 | *
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| 335 | * @returns VBox status codes:
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| 336 | * @retval VINF_SUCCESS on success.
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| 337 | * @retval VERR_INVALID_HANDLE if pTask is invalid but not NIL (asserts).
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| 338 | * @param pTask The async completion task.
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| 339 | */
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| 340 | PDMR3DECL(int) PDMR3AsyncCompletionDestroy(PPDMASYNCCOMPLETION pTask);
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| 341 |
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| 342 | /** @} */
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| 343 |
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| 344 | __END_DECLS
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| 345 |
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| 346 | #endif
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| 347 |
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| 348 |
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| 349 |
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