1 | /* $Id: fileaio-solaris.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - File async I/O, native implementation for the Solaris host platform.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * The contents of this file may alternatively be used under the terms
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26 | * of the Common Development and Distribution License Version 1.0
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27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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28 | * in the VirtualBox distribution, in which case the provisions of the
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29 | * CDDL are applicable instead of those of the GPL.
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30 | *
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31 | * You may elect to license modified versions of this file under the
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32 | * terms and conditions of either the GPL or the CDDL or both.
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33 | *
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34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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35 | */
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36 |
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37 |
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38 | /*********************************************************************************************************************************
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39 | * Header Files *
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40 | *********************************************************************************************************************************/
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41 | #define LOG_GROUP RTLOGGROUP_FILE
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42 | #include <iprt/asm.h>
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43 | #include <iprt/file.h>
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44 | #include <iprt/mem.h>
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45 | #include <iprt/assert.h>
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46 | #include <iprt/string.h>
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47 | #include <iprt/err.h>
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48 | #include <iprt/log.h>
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49 | #include "internal/fileaio.h"
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50 |
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51 | #include <port.h>
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52 | #include <aio.h>
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53 | #include <errno.h>
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54 | #include <unistd.h>
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55 |
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56 |
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57 | /*********************************************************************************************************************************
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58 | * Structures and Typedefs *
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59 | *********************************************************************************************************************************/
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60 | /**
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61 | * Async I/O completion context state.
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62 | */
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63 | typedef struct RTFILEAIOCTXINTERNAL
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64 | {
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65 | /** Handle to the port. */
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66 | int iPort;
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67 | /** Current number of requests active on this context. */
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68 | volatile int32_t cRequests;
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69 | /** Flags given during creation. */
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70 | uint32_t fFlags;
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71 | /** Magic value (RTFILEAIOCTX_MAGIC). */
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72 | uint32_t u32Magic;
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73 | } RTFILEAIOCTXINTERNAL;
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74 | /** Pointer to an internal context structure. */
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75 | typedef RTFILEAIOCTXINTERNAL *PRTFILEAIOCTXINTERNAL;
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76 |
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77 | /**
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78 | * Async I/O request state.
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79 | */
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80 | typedef struct RTFILEAIOREQINTERNAL
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81 | {
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82 | /** The aio control block. Must be the FIRST
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83 | * element. */
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84 | struct aiocb AioCB;
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85 | /** Current state the request is in. */
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86 | RTFILEAIOREQSTATE enmState;
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87 | /** Flag whether this is a flush request. */
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88 | bool fFlush;
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89 | /** Port notifier object to associate a request to a port. */
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90 | port_notify_t PortNotifier;
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91 | /** Opaque user data. */
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92 | void *pvUser;
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93 | /** Completion context we are assigned to. */
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94 | PRTFILEAIOCTXINTERNAL pCtxInt;
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95 | /** Magic value (RTFILEAIOREQ_MAGIC). */
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96 | uint32_t u32Magic;
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97 | } RTFILEAIOREQINTERNAL;
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98 | /** Pointer to an internal request structure. */
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99 | typedef RTFILEAIOREQINTERNAL *PRTFILEAIOREQINTERNAL;
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100 |
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101 |
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102 | /*********************************************************************************************************************************
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103 | * Defined Constants And Macros *
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104 | *********************************************************************************************************************************/
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105 | /** The max number of events to get in one call. */
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106 | #define AIO_MAXIMUM_REQUESTS_PER_CONTEXT 64
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107 | /** Id for the wakeup event. */
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108 | #define AIO_CONTEXT_WAKEUP_EVENT 1
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109 |
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110 | RTR3DECL(int) RTFileAioGetLimits(PRTFILEAIOLIMITS pAioLimits)
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111 | {
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112 | int rcBSD = 0;
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113 | AssertPtrReturn(pAioLimits, VERR_INVALID_POINTER);
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114 |
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115 | /* No limits known. */
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116 | pAioLimits->cReqsOutstandingMax = RTFILEAIO_UNLIMITED_REQS;
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117 | pAioLimits->cbBufferAlignment = 0;
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118 |
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119 | return VINF_SUCCESS;
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120 | }
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121 |
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122 | RTR3DECL(int) RTFileAioReqCreate(PRTFILEAIOREQ phReq)
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123 | {
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124 | AssertPtrReturn(phReq, VERR_INVALID_POINTER);
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125 |
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126 | PRTFILEAIOREQINTERNAL pReqInt = (PRTFILEAIOREQINTERNAL)RTMemAllocZ(sizeof(RTFILEAIOREQINTERNAL));
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127 | if (RT_UNLIKELY(!pReqInt))
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128 | return VERR_NO_MEMORY;
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129 |
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130 | /* Ininitialize static parts. */
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131 | pReqInt->AioCB.aio_sigevent.sigev_notify = SIGEV_PORT;
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132 | pReqInt->AioCB.aio_sigevent.sigev_value.sival_ptr = &pReqInt->PortNotifier;
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133 | pReqInt->PortNotifier.portnfy_user = pReqInt;
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134 | pReqInt->pCtxInt = NULL;
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135 | pReqInt->u32Magic = RTFILEAIOREQ_MAGIC;
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136 | RTFILEAIOREQ_SET_STATE(pReqInt, COMPLETED);
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137 |
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138 | *phReq = (RTFILEAIOREQ)pReqInt;
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139 |
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140 | return VINF_SUCCESS;
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141 | }
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142 |
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143 | RTDECL(int) RTFileAioReqDestroy(RTFILEAIOREQ hReq)
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144 | {
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145 | /*
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146 | * Validate the handle and ignore nil.
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147 | */
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148 | if (hReq == NIL_RTFILEAIOREQ)
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149 | return VINF_SUCCESS;
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150 | PRTFILEAIOREQINTERNAL pReqInt = hReq;
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151 | RTFILEAIOREQ_VALID_RETURN(pReqInt);
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152 | RTFILEAIOREQ_NOT_STATE_RETURN_RC(pReqInt, SUBMITTED, VERR_FILE_AIO_IN_PROGRESS);
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153 |
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154 | /*
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155 | * Trash the magic and free it.
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156 | */
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157 | ASMAtomicUoWriteU32(&pReqInt->u32Magic, ~RTFILEAIOREQ_MAGIC);
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158 | RTMemFree(pReqInt);
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159 | return VINF_SUCCESS;
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160 | }
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161 |
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162 | /**
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163 | * Worker setting up the request.
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164 | */
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165 | DECLINLINE(int) rtFileAioReqPrepareTransfer(RTFILEAIOREQ hReq, RTFILE hFile,
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166 | unsigned uTransferDirection,
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167 | RTFOFF off, void *pvBuf, size_t cbTransfer,
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168 | void *pvUser)
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169 | {
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170 | /*
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171 | * Validate the input.
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172 | */
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173 | PRTFILEAIOREQINTERNAL pReqInt = hReq;
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174 | RTFILEAIOREQ_VALID_RETURN(pReqInt);
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175 | RTFILEAIOREQ_NOT_STATE_RETURN_RC(pReqInt, SUBMITTED, VERR_FILE_AIO_IN_PROGRESS);
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176 | Assert(hFile != NIL_RTFILE);
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177 | AssertPtr(pvBuf);
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178 | Assert(off >= 0);
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179 | Assert(cbTransfer > 0);
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180 |
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181 | pReqInt->AioCB.aio_lio_opcode = uTransferDirection;
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182 | pReqInt->AioCB.aio_fildes = RTFileToNative(hFile);
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183 | pReqInt->AioCB.aio_offset = off;
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184 | pReqInt->AioCB.aio_nbytes = cbTransfer;
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185 | pReqInt->AioCB.aio_buf = pvBuf;
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186 | pReqInt->fFlush = false;
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187 | pReqInt->pvUser = pvUser;
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188 | pReqInt->pCtxInt = NULL;
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189 | RTFILEAIOREQ_SET_STATE(pReqInt, PREPARED);
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190 |
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191 | return VINF_SUCCESS;
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192 | }
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193 |
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194 | RTDECL(int) RTFileAioReqPrepareRead(RTFILEAIOREQ hReq, RTFILE hFile, RTFOFF off,
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195 | void *pvBuf, size_t cbRead, void *pvUser)
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196 | {
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197 | return rtFileAioReqPrepareTransfer(hReq, hFile, LIO_READ,
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198 | off, pvBuf, cbRead, pvUser);
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199 | }
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200 |
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201 | RTDECL(int) RTFileAioReqPrepareWrite(RTFILEAIOREQ hReq, RTFILE hFile, RTFOFF off,
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202 | void const *pvBuf, size_t cbWrite, void *pvUser)
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203 | {
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204 | return rtFileAioReqPrepareTransfer(hReq, hFile, LIO_WRITE,
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205 | off, (void *)pvBuf, cbWrite, pvUser);
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206 | }
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207 |
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208 | RTDECL(int) RTFileAioReqPrepareFlush(RTFILEAIOREQ hReq, RTFILE hFile, void *pvUser)
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209 | {
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210 | PRTFILEAIOREQINTERNAL pReqInt = (PRTFILEAIOREQINTERNAL)hReq;
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211 |
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212 | RTFILEAIOREQ_VALID_RETURN(pReqInt);
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213 | RTFILEAIOREQ_NOT_STATE_RETURN_RC(pReqInt, SUBMITTED, VERR_FILE_AIO_IN_PROGRESS);
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214 | Assert(hFile != NIL_RTFILE);
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215 |
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216 | pReqInt->fFlush = true;
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217 | pReqInt->AioCB.aio_fildes = RTFileToNative(hFile);
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218 | pReqInt->AioCB.aio_offset = 0;
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219 | pReqInt->AioCB.aio_nbytes = 0;
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220 | pReqInt->AioCB.aio_buf = NULL;
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221 | pReqInt->pvUser = pvUser;
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222 | RTFILEAIOREQ_SET_STATE(pReqInt, PREPARED);
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223 |
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224 | return VINF_SUCCESS;
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225 | }
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226 |
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227 | RTDECL(void *) RTFileAioReqGetUser(RTFILEAIOREQ hReq)
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228 | {
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229 | PRTFILEAIOREQINTERNAL pReqInt = hReq;
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230 | RTFILEAIOREQ_VALID_RETURN_RC(pReqInt, NULL);
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231 |
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232 | return pReqInt->pvUser;
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233 | }
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234 |
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235 | RTDECL(int) RTFileAioReqCancel(RTFILEAIOREQ hReq)
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236 | {
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237 | PRTFILEAIOREQINTERNAL pReqInt = hReq;
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238 | RTFILEAIOREQ_VALID_RETURN(pReqInt);
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239 | RTFILEAIOREQ_STATE_RETURN_RC(pReqInt, SUBMITTED, VERR_FILE_AIO_NOT_SUBMITTED);
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240 |
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241 | int rcSolaris = aio_cancel(pReqInt->AioCB.aio_fildes, &pReqInt->AioCB);
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242 |
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243 | if (rcSolaris == AIO_CANCELED)
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244 | {
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245 | /*
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246 | * Decrement request count because the request will never arrive at the
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247 | * completion port.
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248 | */
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249 | AssertMsg(RT_VALID_PTR(pReqInt->pCtxInt), ("Invalid state. Request was canceled but wasn't submitted\n"));
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250 |
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251 | ASMAtomicDecS32(&pReqInt->pCtxInt->cRequests);
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252 | RTFILEAIOREQ_SET_STATE(pReqInt, COMPLETED);
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253 | return VINF_SUCCESS;
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254 | }
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255 | else if (rcSolaris == AIO_ALLDONE)
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256 | return VERR_FILE_AIO_COMPLETED;
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257 | else if (rcSolaris == AIO_NOTCANCELED)
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258 | return VERR_FILE_AIO_IN_PROGRESS;
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259 | else
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260 | return RTErrConvertFromErrno(errno);
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261 | }
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262 |
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263 | RTDECL(int) RTFileAioReqGetRC(RTFILEAIOREQ hReq, size_t *pcbTransfered)
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264 | {
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265 | PRTFILEAIOREQINTERNAL pReqInt = hReq;
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266 | RTFILEAIOREQ_VALID_RETURN(pReqInt);
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267 | RTFILEAIOREQ_NOT_STATE_RETURN_RC(pReqInt, SUBMITTED, VERR_FILE_AIO_IN_PROGRESS);
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268 | RTFILEAIOREQ_NOT_STATE_RETURN_RC(pReqInt, PREPARED, VERR_FILE_AIO_NOT_SUBMITTED);
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269 | AssertPtrNull(pcbTransfered);
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270 |
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271 | int rcSol = aio_error(&pReqInt->AioCB);
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272 | Assert(rcSol != EINPROGRESS); /* Handled by our own state handling. */
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273 |
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274 | if (rcSol == 0)
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275 | {
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276 | if (pcbTransfered)
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277 | *pcbTransfered = aio_return(&pReqInt->AioCB);
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278 | return VINF_SUCCESS;
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279 | }
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280 |
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281 | /* An error occurred. */
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282 | return RTErrConvertFromErrno(rcSol);
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283 | }
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284 |
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285 | RTDECL(int) RTFileAioCtxCreate(PRTFILEAIOCTX phAioCtx, uint32_t cAioReqsMax,
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286 | uint32_t fFlags)
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287 | {
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288 | int rc = VINF_SUCCESS;
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289 | PRTFILEAIOCTXINTERNAL pCtxInt;
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290 | AssertPtrReturn(phAioCtx, VERR_INVALID_POINTER);
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291 | AssertReturn(!(fFlags & ~RTFILEAIOCTX_FLAGS_VALID_MASK), VERR_INVALID_PARAMETER);
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292 |
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293 | pCtxInt = (PRTFILEAIOCTXINTERNAL)RTMemAllocZ(sizeof(RTFILEAIOCTXINTERNAL));
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294 | if (RT_UNLIKELY(!pCtxInt))
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295 | return VERR_NO_MEMORY;
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296 |
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297 | /* Init the event handle. */
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298 | pCtxInt->iPort = port_create();
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299 | if (RT_LIKELY(pCtxInt->iPort > 0))
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300 | {
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301 | pCtxInt->fFlags = fFlags;
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302 | pCtxInt->u32Magic = RTFILEAIOCTX_MAGIC;
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303 | *phAioCtx = (RTFILEAIOCTX)pCtxInt;
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304 | }
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305 | else
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306 | {
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307 | RTMemFree(pCtxInt);
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308 | rc = RTErrConvertFromErrno(errno);
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309 | }
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310 |
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311 | return rc;
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312 | }
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313 |
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314 | RTDECL(int) RTFileAioCtxDestroy(RTFILEAIOCTX hAioCtx)
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315 | {
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316 | /* Validate the handle and ignore nil. */
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317 | if (hAioCtx == NIL_RTFILEAIOCTX)
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318 | return VINF_SUCCESS;
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319 | PRTFILEAIOCTXINTERNAL pCtxInt = hAioCtx;
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320 | RTFILEAIOCTX_VALID_RETURN(pCtxInt);
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321 |
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322 | /* Cannot destroy a busy context. */
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323 | if (RT_UNLIKELY(pCtxInt->cRequests))
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324 | return VERR_FILE_AIO_BUSY;
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325 |
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326 | close(pCtxInt->iPort);
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327 | ASMAtomicUoWriteU32(&pCtxInt->u32Magic, RTFILEAIOCTX_MAGIC_DEAD);
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328 | RTMemFree(pCtxInt);
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329 |
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330 | return VINF_SUCCESS;
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331 | }
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332 |
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333 | RTDECL(uint32_t) RTFileAioCtxGetMaxReqCount(RTFILEAIOCTX hAioCtx)
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334 | {
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335 | return RTFILEAIO_UNLIMITED_REQS;
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336 | }
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337 |
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338 | RTDECL(int) RTFileAioCtxAssociateWithFile(RTFILEAIOCTX hAioCtx, RTFILE hFile)
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339 | {
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340 | return VINF_SUCCESS;
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341 | }
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342 |
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343 | RTDECL(int) RTFileAioCtxSubmit(RTFILEAIOCTX hAioCtx, PRTFILEAIOREQ pahReqs, size_t cReqs)
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344 | {
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345 | /*
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346 | * Parameter validation.
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347 | */
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348 | int rc = VINF_SUCCESS;
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349 | PRTFILEAIOCTXINTERNAL pCtxInt = hAioCtx;
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350 | RTFILEAIOCTX_VALID_RETURN(pCtxInt);
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351 | AssertReturn(cReqs > 0, VERR_INVALID_PARAMETER);
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352 | AssertPtrReturn(pahReqs, VERR_INVALID_POINTER);
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353 | size_t i = cReqs;
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354 |
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355 | do
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356 | {
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357 | int rcSol = 0;
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358 | size_t cReqsSubmit = 0;
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359 | PRTFILEAIOREQINTERNAL pReqInt;
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360 |
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361 | while(i-- > 0)
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362 | {
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363 | pReqInt = pahReqs[i];
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364 | if (RTFILEAIOREQ_IS_NOT_VALID(pReqInt))
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365 | {
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366 | /* Undo everything and stop submitting. */
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367 | for (size_t iUndo = 0; iUndo < i; iUndo++)
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368 | {
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369 | pReqInt = pahReqs[iUndo];
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370 | RTFILEAIOREQ_SET_STATE(pReqInt, PREPARED);
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371 | pReqInt->pCtxInt = NULL;
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372 | }
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373 | rc = VERR_INVALID_HANDLE;
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374 | break;
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375 | }
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376 |
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377 | pReqInt->PortNotifier.portnfy_port = pCtxInt->iPort;
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378 | pReqInt->pCtxInt = pCtxInt;
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379 | RTFILEAIOREQ_SET_STATE(pReqInt, SUBMITTED);
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380 |
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381 | if (pReqInt->fFlush)
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382 | break;
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383 |
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384 | cReqsSubmit++;
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385 | }
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386 |
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387 | if (cReqsSubmit)
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388 | {
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389 | rcSol = lio_listio(LIO_NOWAIT, (struct aiocb **)pahReqs, cReqsSubmit, NULL);
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390 | if (RT_UNLIKELY(rcSol < 0))
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391 | {
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392 | if (rcSol == EAGAIN)
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393 | rc = VERR_FILE_AIO_INSUFFICIENT_RESSOURCES;
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394 | else
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395 | rc = RTErrConvertFromErrno(errno);
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396 |
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397 | /* Check which requests got actually submitted and which not. */
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398 | for (i = 0; i < cReqs; i++)
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399 | {
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400 | pReqInt = pahReqs[i];
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401 | rcSol = aio_error(&pReqInt->AioCB);
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402 | if (rcSol == EINVAL)
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403 | {
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404 | /* Was not submitted. */
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405 | RTFILEAIOREQ_SET_STATE(pReqInt, PREPARED);
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406 | pReqInt->pCtxInt = NULL;
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407 | }
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408 | else if (rcSol != EINPROGRESS)
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409 | {
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410 | /* The request encountered an error. */
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411 | RTFILEAIOREQ_SET_STATE(pReqInt, COMPLETED);
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412 | }
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413 | }
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414 | break;
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415 | }
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416 |
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417 | ASMAtomicAddS32(&pCtxInt->cRequests, cReqsSubmit);
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418 | cReqs -= cReqsSubmit;
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419 | pahReqs += cReqsSubmit;
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420 | }
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421 |
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422 | if (cReqs)
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423 | {
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424 | pReqInt = pahReqs[0];
|
---|
425 | RTFILEAIOREQ_VALID_RETURN(pReqInt);
|
---|
426 |
|
---|
427 | /*
|
---|
428 | * If there are still requests left we have a flush request.
|
---|
429 | * lio_listio does not work with this requests so
|
---|
430 | * we have to use aio_fsync directly.
|
---|
431 | */
|
---|
432 | rcSol = aio_fsync(O_SYNC, &pReqInt->AioCB);
|
---|
433 | if (RT_UNLIKELY(rcSol < 0))
|
---|
434 | {
|
---|
435 | RTFILEAIOREQ_SET_STATE(pReqInt, COMPLETED);
|
---|
436 | rc = RTErrConvertFromErrno(errno);
|
---|
437 | break;
|
---|
438 | }
|
---|
439 |
|
---|
440 | ASMAtomicIncS32(&pCtxInt->cRequests);
|
---|
441 | cReqs--;
|
---|
442 | pahReqs++;
|
---|
443 | }
|
---|
444 | } while (cReqs);
|
---|
445 |
|
---|
446 | return rc;
|
---|
447 | }
|
---|
448 |
|
---|
449 | RTDECL(int) RTFileAioCtxWait(RTFILEAIOCTX hAioCtx, size_t cMinReqs, RTMSINTERVAL cMillies,
|
---|
450 | PRTFILEAIOREQ pahReqs, size_t cReqs, uint32_t *pcReqs)
|
---|
451 | {
|
---|
452 | int rc = VINF_SUCCESS;
|
---|
453 | int cRequestsCompleted = 0;
|
---|
454 |
|
---|
455 | /*
|
---|
456 | * Validate the parameters, making sure to always set pcReqs.
|
---|
457 | */
|
---|
458 | AssertPtrReturn(pcReqs, VERR_INVALID_POINTER);
|
---|
459 | *pcReqs = 0; /* always set */
|
---|
460 | PRTFILEAIOCTXINTERNAL pCtxInt = hAioCtx;
|
---|
461 | RTFILEAIOCTX_VALID_RETURN(pCtxInt);
|
---|
462 | AssertPtrReturn(pahReqs, VERR_INVALID_POINTER);
|
---|
463 | AssertReturn(cReqs != 0, VERR_INVALID_PARAMETER);
|
---|
464 | AssertReturn(cReqs >= cMinReqs, VERR_OUT_OF_RANGE);
|
---|
465 |
|
---|
466 | if ( RT_UNLIKELY(ASMAtomicReadS32(&pCtxInt->cRequests) == 0)
|
---|
467 | && !(pCtxInt->fFlags & RTFILEAIOCTX_FLAGS_WAIT_WITHOUT_PENDING_REQUESTS))
|
---|
468 | return VERR_FILE_AIO_NO_REQUEST;
|
---|
469 |
|
---|
470 | /*
|
---|
471 | * Convert the timeout if specified.
|
---|
472 | */
|
---|
473 | struct timespec *pTimeout = NULL;
|
---|
474 | struct timespec Timeout = {0,0};
|
---|
475 | uint64_t StartNanoTS = 0;
|
---|
476 | if (cMillies != RT_INDEFINITE_WAIT)
|
---|
477 | {
|
---|
478 | Timeout.tv_sec = cMillies / 1000;
|
---|
479 | Timeout.tv_nsec = cMillies % 1000 * 1000000;
|
---|
480 | pTimeout = &Timeout;
|
---|
481 | StartNanoTS = RTTimeNanoTS();
|
---|
482 | }
|
---|
483 |
|
---|
484 | /* Wait for at least one. */
|
---|
485 | if (!cMinReqs)
|
---|
486 | cMinReqs = 1;
|
---|
487 |
|
---|
488 | while ( cMinReqs
|
---|
489 | && RT_SUCCESS_NP(rc))
|
---|
490 | {
|
---|
491 | port_event_t aPortEvents[AIO_MAXIMUM_REQUESTS_PER_CONTEXT];
|
---|
492 | uint_t cRequests = cMinReqs;
|
---|
493 | int cRequestsToWait = RT_MIN(cReqs, AIO_MAXIMUM_REQUESTS_PER_CONTEXT);
|
---|
494 | int rcSol;
|
---|
495 | uint64_t StartTime;
|
---|
496 |
|
---|
497 | rcSol = port_getn(pCtxInt->iPort, &aPortEvents[0], cRequestsToWait, &cRequests, pTimeout);
|
---|
498 |
|
---|
499 | if (RT_UNLIKELY(rcSol < 0))
|
---|
500 | rc = RTErrConvertFromErrno(errno);
|
---|
501 |
|
---|
502 | /* Process received events. */
|
---|
503 | for (uint_t i = 0; i < cRequests; i++)
|
---|
504 | {
|
---|
505 | if (aPortEvents[i].portev_source == PORT_SOURCE_ALERT)
|
---|
506 | {
|
---|
507 | Assert(aPortEvents[i].portev_events == AIO_CONTEXT_WAKEUP_EVENT);
|
---|
508 | rc = VERR_INTERRUPTED; /* We've got interrupted. */
|
---|
509 | /* Reset the port. */
|
---|
510 | port_alert(pCtxInt->iPort, PORT_ALERT_SET, 0, NULL);
|
---|
511 | }
|
---|
512 | else
|
---|
513 | {
|
---|
514 | PRTFILEAIOREQINTERNAL pReqInt = (PRTFILEAIOREQINTERNAL)aPortEvents[i].portev_user;
|
---|
515 | AssertPtr(pReqInt);
|
---|
516 | Assert(pReqInt->u32Magic == RTFILEAIOREQ_MAGIC);
|
---|
517 |
|
---|
518 | /* A request has finished. */
|
---|
519 | pahReqs[cRequestsCompleted++] = pReqInt;
|
---|
520 |
|
---|
521 | /* Mark the request as finished. */
|
---|
522 | RTFILEAIOREQ_SET_STATE(pReqInt, COMPLETED);
|
---|
523 | }
|
---|
524 | }
|
---|
525 |
|
---|
526 | /*
|
---|
527 | * Done Yet? If not advance and try again.
|
---|
528 | */
|
---|
529 | if (cRequests >= cMinReqs)
|
---|
530 | break;
|
---|
531 | cMinReqs -= cRequests;
|
---|
532 | cReqs -= cRequests;
|
---|
533 |
|
---|
534 | if (cMillies != RT_INDEFINITE_WAIT)
|
---|
535 | {
|
---|
536 | uint64_t NanoTS = RTTimeNanoTS();
|
---|
537 | uint64_t cMilliesElapsed = (NanoTS - StartNanoTS) / 1000000;
|
---|
538 |
|
---|
539 | /* The syscall supposedly updates it, but we're paranoid. :-) */
|
---|
540 | if (cMilliesElapsed < cMillies)
|
---|
541 | {
|
---|
542 | Timeout.tv_sec = (cMillies - (RTMSINTERVAL)cMilliesElapsed) / 1000;
|
---|
543 | Timeout.tv_nsec = (cMillies - (RTMSINTERVAL)cMilliesElapsed) % 1000 * 1000000;
|
---|
544 | }
|
---|
545 | else
|
---|
546 | {
|
---|
547 | Timeout.tv_sec = 0;
|
---|
548 | Timeout.tv_nsec = 0;
|
---|
549 | }
|
---|
550 | }
|
---|
551 | }
|
---|
552 |
|
---|
553 | /*
|
---|
554 | * Update the context state and set the return value.
|
---|
555 | */
|
---|
556 | *pcReqs = cRequestsCompleted;
|
---|
557 | ASMAtomicSubS32(&pCtxInt->cRequests, cRequestsCompleted);
|
---|
558 |
|
---|
559 | return rc;
|
---|
560 | }
|
---|
561 |
|
---|
562 | RTDECL(int) RTFileAioCtxWakeup(RTFILEAIOCTX hAioCtx)
|
---|
563 | {
|
---|
564 | int rc = VINF_SUCCESS;
|
---|
565 | PRTFILEAIOCTXINTERNAL pCtxInt = hAioCtx;
|
---|
566 | RTFILEAIOCTX_VALID_RETURN(pCtxInt);
|
---|
567 |
|
---|
568 | rc = port_alert(pCtxInt->iPort, PORT_ALERT_UPDATE, AIO_CONTEXT_WAKEUP_EVENT, NULL);
|
---|
569 | if (RT_UNLIKELY((rc < 0) && (errno != EBUSY)))
|
---|
570 | return RTErrConvertFromErrno(errno);
|
---|
571 |
|
---|
572 | return VINF_SUCCESS;
|
---|
573 | }
|
---|
574 |
|
---|