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 | * 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_pdmasynccompletion_h
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27 | #define ___VBox_pdmasynccompletion_h
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28 |
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29 | #include <VBox/types.h>
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30 |
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31 | __BEGIN_DECLS
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32 |
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33 | /** @defgroup grp_pdm_async_completion Async I/O Completion
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34 | * @ingroup grp_pdm
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35 | * @{
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36 | */
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37 |
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38 | /** Pointer to a PDM async completion template handle. */
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39 | typedef struct PDMASYNCCOMPLETIONTEMPLATE *PPDMASYNCCOMPLETIONTEMPLATE;
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40 | /** Pointer to a PDM async completion template handle pointer. */
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41 | typedef PPDMASYNCCOMPLETIONTEMPLATE *PPPDMASYNCCOMPLETIONTEMPLATE;
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42 |
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43 | /** Pointer to a PDM async completion task handle. */
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44 | typedef struct PDMASYNCCOMPLETION *PPDMASYNCCOMPLETION;
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45 | /** Pointer to a PDM async completion task handle pointer. */
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46 | typedef PPDMASYNCCOMPLETION *PPPDMASYNCCOMPLETION;
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47 |
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48 |
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49 | /**
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50 | * Completion callback for devices.
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51 | *
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52 | * @param pDevIns The device instance.
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53 | * @param pTask Pointer to the completion task.
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54 | * The task is at the time of the call setup to be resumed. So, the callback must
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55 | * call PDMR3AsyncCompletionSuspend or PDMR3AsyncCompletionDestroy if any other
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56 | * action is wanted upon return.
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57 | * @param pvCtx Pointer to any additional, OS specific, completion context. TBD.
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58 | * @param pvUser User argument.
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59 | */
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60 | typedef DECLCALLBACK(void) FNPDMASYNCCOMPLETEDEV(PPDMDEVINS pDevIns, PPDMASYNCCOMPLETION pTask, void *pvCtx, void *pvUser);
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61 | /** Pointer to a FNPDMASYNCCOMPLETEDEV(). */
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62 | typedef FNPDMASYNCCOMPLETEDEV *PFNPDMASYNCCOMPLETEDEV;
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63 |
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64 |
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65 | /**
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66 | * Completion callback for drivers.
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67 | *
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68 | * @param pDrvIns The driver instance.
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69 | * @param pTask Pointer to the completion task.
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70 | * The task is at the time of the call setup to be resumed. So, the callback must
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71 | * call PDMR3AsyncCompletionSuspend or PDMR3AsyncCompletionDestroy if any other
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72 | * action is wanted upon return.
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73 | * @param pvCtx Pointer to any additional, OS specific, completion context. TBD.
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74 | * @param pvUser User argument.
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75 | */
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76 | typedef DECLCALLBACK(void) FNPDMASYNCCOMPLETEDRV(PPDMDRVINS pDrvIns, PPDMASYNCCOMPLETION pTask, void *pvCtx, void *pvUser);
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77 | /** Pointer to a FNPDMASYNCCOMPLETEDRV(). */
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78 | typedef FNPDMASYNCCOMPLETEDRV *PFNPDMASYNCCOMPLETEDRV;
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79 |
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80 |
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81 | /**
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82 | * Completion callback for USB devices.
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83 | *
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84 | * @param pUsbIns The USB device instance.
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85 | * @param pTask Pointer to the completion task.
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86 | * The task is at the time of the call setup to be resumed. So, the callback must
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87 | * call PDMR3AsyncCompletionSuspend or PDMR3AsyncCompletionDestroy if any other
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88 | * action is wanted upon return.
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89 | * @param pvCtx Pointer to any additional, OS specific, completion context. TBD.
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90 | * @param pvUser User argument.
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91 | */
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92 | typedef DECLCALLBACK(void) FNPDMASYNCCOMPLETEUSB(PPDMUSBINS pUsbIns, PPDMASYNCCOMPLETION pTask, void *pvCtx, void *pvUser);
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93 | /** Pointer to a FNPDMASYNCCOMPLETEUSB(). */
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94 | typedef FNPDMASYNCCOMPLETEUSB *PFNPDMASYNCCOMPLETEUSB;
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95 |
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96 |
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97 | /**
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98 | * Completion callback for internal.
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99 | *
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100 | * @param pVM Pointer to the shared VM structure.
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101 | * @param pTask Pointer to the completion task.
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102 | * The task is at the time of the call setup to be resumed. So, the callback must
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103 | * call PDMR3AsyncCompletionSuspend or PDMR3AsyncCompletionDestroy if any other
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104 | * action is wanted upon return.
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105 | * @param pvCtx Pointer to any additional, OS specific, completion context. TBD.
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106 | * @param pvUser User argument for the task.
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107 | * @param pvUser2 User argument for the template.
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108 | */
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109 | typedef DECLCALLBACK(void) FNPDMASYNCCOMPLETEINT(PVM pVM, PPDMASYNCCOMPLETION pTask, void *pvCtx, void *pvUser, void *pvUser2);
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110 | /** Pointer to a FNPDMASYNCCOMPLETEINT(). */
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111 | typedef FNPDMASYNCCOMPLETEINT *PFNPDMASYNCCOMPLETEINT;
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112 |
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113 |
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114 | /**
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115 | * Creates a async completion template for a device 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 pDevIns The device 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) PDMR3AsyncCompletionTemplateCreateDevice(PVM pVM, PPDMDEVINS pDevIns, PPPDMASYNCCOMPLETIONTEMPLATE ppTemplate, PFNPDMASYNCCOMPLETEDEV 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 driver 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 pDrvIns The driver 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) PDMR3AsyncCompletionTemplateCreateDriver(PVM pVM, PPDMDRVINS pDrvIns, PPPDMASYNCCOMPLETIONTEMPLATE ppTemplate, PFNPDMASYNCCOMPLETEDRV 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 a USB device instance.
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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 pUsbIns The USB device instance.
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150 | * @param ppTemplate Where to store the template pointer on success.
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151 | * @param pfnCompleted The completion callback routine.
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152 | * @param pszDesc Description.
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153 | */
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154 | PDMR3DECL(int) PDMR3AsyncCompletionTemplateCreateUsb(PVM pVM, PPDMUSBINS pUsbIns, PPPDMASYNCCOMPLETIONTEMPLATE ppTemplate, PFNPDMASYNCCOMPLETEUSB pfnCompleted, const char *pszDesc);
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155 |
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156 | /**
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157 | * Creates a async completion template for internally by the VMM.
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158 | *
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159 | * The template is used when creating new completion tasks.
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160 | *
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161 | * @returns VBox status code.
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162 | * @param pVM Pointer to the shared VM structure.
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163 | * @param ppTemplate Where to store the template pointer on success.
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164 | * @param pfnCompleted The completion callback routine.
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165 | * @param pvUser2 The 2nd user argument for the callback.
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166 | * @param pszDesc Description.
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167 | */
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168 | PDMR3DECL(int) PDMR3AsyncCompletionTemplateCreateInternal(PVM pVM, PPPDMASYNCCOMPLETIONTEMPLATE ppTemplate, PFNPDMASYNCCOMPLETEINT pfnCompleted, void *pvUser2, const char *pszDesc);
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169 |
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170 | /**
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171 | * Destroys the specified async completion template.
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172 | *
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173 | * @returns VBox status codes:
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174 | * @retval VINF_SUCCESS on success.
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175 | * @retval VERR_PDM_ASYNC_TEMPLATE_BUSY if the template is still in use.
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176 | *
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177 | * @param pTemplate The template in question.
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178 | */
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179 | PDMR3DECL(int) PDMR3AsyncCompletionTemplateDestroy(PPDMASYNCCOMPLETIONTEMPLATE pTemplate);
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180 |
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181 | /**
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182 | * Destroys all the specified async completion templates for the given device instance.
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183 | *
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184 | * @returns VBox status codes:
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185 | * @retval VINF_SUCCESS on success.
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186 | * @retval VERR_PDM_ASYNC_TEMPLATE_BUSY if one or more of the templates are still in use.
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187 | *
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188 | * @param pVM Pointer to the shared VM structure.
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189 | * @param pDevIns The device instance.
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190 | */
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191 | PDMR3DECL(int) PDMR3AsyncCompletionTemplateDestroyDevice(PVM pVM, PPDMDEVINS pDevIns);
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192 |
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193 | /**
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194 | * Destroys all the specified async completion templates for the given driver instance.
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195 | *
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196 | * @returns VBox status codes:
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197 | * @retval VINF_SUCCESS on success.
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198 | * @retval VERR_PDM_ASYNC_TEMPLATE_BUSY if one or more of the templates are still in use.
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199 | *
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200 | * @param pVM Pointer to the shared VM structure.
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201 | * @param pDrvIns The driver instance.
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202 | */
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203 | PDMR3DECL(int) PDMR3AsyncCompletionTemplateDestroyDriver(PVM pVM, PPDMDRVINS pDrvIns);
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204 |
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205 | /**
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206 | * Destroys all the specified async completion templates for the given USB device instance.
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207 | *
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208 | * @returns VBox status codes:
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209 | * @retval VINF_SUCCESS on success.
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210 | * @retval VERR_PDM_ASYNC_TEMPLATE_BUSY if one or more of the templates are still in use.
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211 | *
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212 | * @param pVM Pointer to the shared VM structure.
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213 | * @param pUsbIns The USB device instance.
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214 | */
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215 | PDMR3DECL(int) PDMR3AsyncCompletionTemplateDestroyUsb(PVM pVM, PPDMUSBINS pUsbIns);
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216 |
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217 |
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218 | /**
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219 | * Socket completion context (pvCtx).
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220 | */
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221 | typedef struct PDMASYNCCOMPLETIONSOCKET
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222 | {
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223 | /** The socket. */
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224 | RTSOCKET Socket;
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225 | /** Readable. */
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226 | bool fReadable;
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227 | /** Writable. */
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228 | bool fWriteable;
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229 | /** Exceptions. */
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230 | bool fXcpt;
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231 | } PDMASYNCCOMPLETIONSOCKET;
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232 | /** Pointer to a socket completion context. */
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233 | typedef PDMASYNCCOMPLETIONSOCKET *PPDMASYNCCOMPLETIONSOCKET;
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234 |
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235 |
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236 | /**
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237 | * Creates a completion task for a socket.
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238 | *
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239 | * The pvCtx callback argument will be pointing to a PDMASYNCCOMPLETIONSOCKET structure.
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240 | *
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241 | * @returns VBox status code.
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242 | * @param ppTask Where to store the task handle on success.
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243 | * @param pTemplate The async completion template.
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244 | * @param Socket The socket.
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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 | * @param pvUser The user argument for the callback.
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249 | */
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250 | PDMR3DECL(int) PDMR3AsyncCompletionCreateSocket(PPPDMASYNCCOMPLETION ppTask, PPDMASYNCCOMPLETIONTEMPLATE pTemplate, RTSOCKET Socket, bool fReadable, bool fWriteable, bool fXcpt, void *pvUser);
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251 |
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252 | /**
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253 | * Modifies a socket completion task.
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254 | *
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255 | * @returns VBox status code.
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256 | * @retval VINF_SUCCESS on success.
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257 | * @retval VERR_NOT_SUPPORTED if the task isn't a socket task.
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258 | * @param pTemplate The async completion template.
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259 | * @param fReadable Whether to callback when the socket becomes readable.
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260 | * @param fWriteable Whether to callback when the socket becomes writable.
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261 | * @param fXcpt Whether to callback on exception.
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262 | */
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263 | PDMR3DECL(int) PDMR3AsyncCompletionModifySocket(PPDMASYNCCOMPLETION pTask, bool fReadable, bool fWriteable, bool fXcpt);
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264 |
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265 |
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266 | #if defined(RT_OS_LINUX) && defined(_AIO_H)
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267 | /**
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268 | * Creates a completion task for an AIO operation on Linux.
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269 | *
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270 | * The pvCtx callback argument will be pAioCB.
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271 | *
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272 | * @returns VBox status code.
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273 | * @param ppTask Where to store the task handle on success.
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274 | * @param pTemplate The async completion template.
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275 | * @param pAioCB The asynchronous I/O control block to wait for.
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276 | * @param pvUser The user argument for the callback.
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277 | */
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278 | PDMR3DECL(int) PDMR3AsyncCompletionCreateLnxAIO(PPPDMASYNCCOMPLETION ppTask, PPDMASYNCCOMPLETIONTEMPLATE pTemplate, const struct aiocb *pAioCB, void *pvUser);
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279 | #endif /* RT_OS_LINUX */
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280 |
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281 | #ifdef RT_OS_OS2
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282 | /**
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283 | * Creates a completion task for an event semaphore on OS/2.
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284 | *
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285 | * The pvCtx callback argument will be hev.
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286 | *
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287 | * @returns VBox status code.
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288 | * @param ppTask Where to store the task handle on success.
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289 | * @param pTemplate The async completion template.
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290 | * @param hev The handle of the event semaphore to wait on.
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291 | * @param pvUser The user argument for the callback.
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292 | */
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293 | PDMR3DECL(int) PDMR3AsyncCompletionCreateOs2Event(PPPDMASYNCCOMPLETION ppTask, PPDMASYNCCOMPLETIONTEMPLATE pTemplate, unsigned long hev, void *pvUser);
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294 | #endif /* RT_OS_OS2 */
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295 |
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296 | #ifdef RT_OS_WINDOWS
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297 | /**
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298 | * Creates a completion task for an object on Windows.
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299 | *
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300 | * The pvCtx callback argument will be hObject.
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301 | *
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302 | * @returns VBox status code.
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303 | * @param ppTask Where to store the task handle on success.
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304 | * @param pTemplate The async completion template.
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305 | * @param hObject The object to wait for.
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306 | * @param pvUser The user argument for the callback.
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307 | */
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308 | PDMR3DECL(int) PDMR3AsyncCompletionCreateWinObject(PPPDMASYNCCOMPLETION ppTask, PPDMASYNCCOMPLETIONTEMPLATE pTemplate, void *hObject, void *pvUser);
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309 | #endif /* RT_OS_WINDOWS */
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310 |
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311 |
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312 |
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313 | /**
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314 | * Sets the user argument of a completion task.
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315 | *
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316 | * @returns VBox status code.
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317 | * @param pTask The async completion task.
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318 | * @param pvUser The user argument for the callback.
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319 | */
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320 | PDMR3DECL(int) PDMR3AsyncCompletionSetUserArg(PPDMASYNCCOMPLETION pTask, void *pvUser);
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321 |
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322 | /**
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323 | * Suspends a async completion task.
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324 | *
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325 | * @returns VBox status codes:
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326 | * @retval VINF_SUCCESS on success.
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327 | * @retval VERR_PDM_ASYNC_COMPLETION_ALREADY_SUSPENDED if already suspended.
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328 | * @retval VERR_INVALID_HANDLE if pTask is invalid (asserts).
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329 | * @param pTask The async completion task.
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330 | */
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331 | PDMR3DECL(int) PDMR3AsyncCompletionSuspend(PPDMASYNCCOMPLETION pTask);
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332 |
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333 | /**
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334 | * Suspends a async completion task.
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335 | *
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336 | * @returns VBox status codes:
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337 | * @retval VINF_SUCCESS on success.
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338 | * @retval VERR_PDM_ASYNC_COMPLETION_NOT_SUSPENDED if not suspended.
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339 | * @retval VERR_INVALID_HANDLE if pTask is invalid (asserts).
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340 | * @param pTask The async completion task.
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341 | */
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342 | PDMR3DECL(int) PDMR3AsyncCompletionResume(PPDMASYNCCOMPLETION pTask);
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343 |
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344 | /**
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345 | * Destroys a async completion task.
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346 | *
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347 | * The task doesn't have to be suspended or anything.
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348 | *
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349 | * @returns VBox status codes:
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350 | * @retval VINF_SUCCESS on success.
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351 | * @retval VERR_INVALID_HANDLE if pTask is invalid but not NIL (asserts).
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352 | * @param pTask The async completion task.
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353 | */
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354 | PDMR3DECL(int) PDMR3AsyncCompletionDestroy(PPDMASYNCCOMPLETION pTask);
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355 |
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356 | /** @} */
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357 |
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358 | __END_DECLS
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359 |
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360 | #endif
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361 |
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362 |
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363 |
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