| 1 | /* $Id: errmsg.cpp 83745 2020-04-17 12:33:33Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Status code messages.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2020 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.215389.xyz. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*********************************************************************************************************************************
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| 29 | * Header Files *
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| 30 | *********************************************************************************************************************************/
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| 31 | #include <iprt/err.h>
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| 32 | #include "internal/iprt.h"
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| 33 |
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| 34 | #include <iprt/asm.h>
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| 35 | #include <iprt/string.h>
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| 36 | #include <VBox/err.h>
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| 37 |
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| 38 |
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| 39 | /*********************************************************************************************************************************
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| 40 | * Global Variables *
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| 41 | *********************************************************************************************************************************/
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| 42 | /** Array of messages.
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| 43 | * The data is generated by a sed script.
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| 44 | */
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| 45 | static const RTSTATUSMSG g_aStatusMsgs[] =
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| 46 | {
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| 47 | #if !defined(IPRT_NO_ERROR_DATA) && !defined(DOXYGEN_RUNNING)
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| 48 | # include "errmsgdata-sorted.h"
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| 49 | #else
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| 50 | { "Success.", "Success.", "VINF_SUCCESS", 0 },
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| 51 | #endif
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| 52 | };
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| 53 |
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| 54 |
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| 55 | /** Temporary buffers to format unknown messages in.
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| 56 | * @{
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| 57 | */
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| 58 | static char g_aszUnknownStr[8][64];
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| 59 | static RTSTATUSMSG g_aUnknownMsgs[8] =
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| 60 | {
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| 61 | { &g_aszUnknownStr[0][0], &g_aszUnknownStr[0][0], &g_aszUnknownStr[0][0], 0 },
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| 62 | { &g_aszUnknownStr[1][0], &g_aszUnknownStr[1][0], &g_aszUnknownStr[1][0], 0 },
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| 63 | { &g_aszUnknownStr[2][0], &g_aszUnknownStr[2][0], &g_aszUnknownStr[2][0], 0 },
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| 64 | { &g_aszUnknownStr[3][0], &g_aszUnknownStr[3][0], &g_aszUnknownStr[3][0], 0 },
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| 65 | { &g_aszUnknownStr[4][0], &g_aszUnknownStr[4][0], &g_aszUnknownStr[4][0], 0 },
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| 66 | { &g_aszUnknownStr[5][0], &g_aszUnknownStr[5][0], &g_aszUnknownStr[5][0], 0 },
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| 67 | { &g_aszUnknownStr[6][0], &g_aszUnknownStr[6][0], &g_aszUnknownStr[6][0], 0 },
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| 68 | { &g_aszUnknownStr[7][0], &g_aszUnknownStr[7][0], &g_aszUnknownStr[7][0], 0 },
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| 69 | };
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| 70 | /** Last used index in g_aUnknownMsgs. */
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| 71 | static volatile uint32_t g_iUnknownMsgs;
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| 72 | /** @} */
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| 73 |
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| 74 |
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| 75 | /**
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| 76 | * Get the message corresponding to a given status code.
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| 77 | *
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| 78 | * @returns Pointer to read-only message description.
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| 79 | * @param rc The status code.
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| 80 | */
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| 81 | RTDECL(PCRTSTATUSMSG) RTErrGet(int rc)
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| 82 | {
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| 83 | /*
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| 84 | * Perform binary search (duplicate code in RTErrWinGet).
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| 85 | */
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| 86 | size_t iStart = 0;
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| 87 | size_t iEnd = RT_ELEMENTS(g_aStatusMsgs);
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| 88 | for (;;)
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| 89 | {
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| 90 | size_t i = iStart + (iEnd - iStart) / 2;
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| 91 | int const iCode = g_aStatusMsgs[i].iCode;
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| 92 | if (rc < iCode)
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| 93 | {
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| 94 | if (iStart < i)
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| 95 | iEnd = i;
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| 96 | else
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| 97 | break;
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| 98 | }
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| 99 | else if (rc > iCode)
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| 100 | {
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| 101 | i++;
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| 102 | if (i < iEnd)
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| 103 | iStart = i;
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| 104 | else
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| 105 | break;
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| 106 | }
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| 107 | else
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| 108 | return &g_aStatusMsgs[i];
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| 109 | }
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| 110 |
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| 111 | #ifdef RT_STRICT
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| 112 | for (size_t i = 0; i < RT_ELEMENTS(g_aStatusMsgs); i++)
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| 113 | Assert(g_aStatusMsgs[i].iCode != rc);
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| 114 | #endif
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| 115 |
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| 116 | /*
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| 117 | * Need to use the temporary stuff.
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| 118 | */
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| 119 | int iMsg = ASMAtomicXchgU32(&g_iUnknownMsgs, (g_iUnknownMsgs + 1) % RT_ELEMENTS(g_aUnknownMsgs));
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| 120 | RTStrPrintf(&g_aszUnknownStr[iMsg][0], sizeof(g_aszUnknownStr[iMsg]), "Unknown Status %d (%#x)", rc, rc);
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| 121 | return &g_aUnknownMsgs[iMsg];
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| 122 | }
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| 123 | RT_EXPORT_SYMBOL(RTErrGet);
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| 124 |
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