| 1 | /** @file
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| 2 | * MS COM / XPCOM Abstraction Layer - Assertion macros for COM/XPCOM.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2006-2019 Oracle Corporation
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| 7 | *
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| 8 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 9 | * available from http://www.virtualbox.org. This file is free software;
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| 10 | * you can redistribute it and/or modify it under the terms of the GNU
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| 11 | * General Public License (GPL) as published by the Free Software
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| 12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 15 | *
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| 16 | * The contents of this file may alternatively be used under the terms
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| 17 | * of the Common Development and Distribution License Version 1.0
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| 18 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 19 | * VirtualBox OSE distribution, in which case the provisions of the
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| 20 | * CDDL are applicable instead of those of the GPL.
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| 21 | *
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| 22 | * You may elect to license modified versions of this file under the
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| 23 | * terms and conditions of either the GPL or the CDDL or both.
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| 24 | */
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| 25 |
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| 26 | #ifndef VBOX_INCLUDED_com_assert_h
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| 27 | #define VBOX_INCLUDED_com_assert_h
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| 28 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 29 | # pragma once
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| 30 | #endif
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| 31 |
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| 32 | #include <iprt/assert.h>
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| 33 |
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| 34 | /** @defgroup grp_com_assert Assertion Macros for COM/XPCOM
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| 35 | * @ingroup grp_com
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| 36 | * @{
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| 37 | */
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| 38 |
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| 39 |
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| 40 | /**
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| 41 | * Asserts that the COM result code is succeeded in strict builds.
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| 42 | * In non-strict builds the result code will be NOREF'ed to kill compiler warnings.
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| 43 | *
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| 44 | * @param hrc The COM result code
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| 45 | */
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| 46 | #define AssertComRC(hrc) \
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| 47 | do { AssertMsg(SUCCEEDED(hrc), ("COM RC = %Rhrc (0x%08X)\n", hrc, hrc)); NOREF(hrc); } while (0)
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| 48 |
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| 49 | /**
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| 50 | * Same as AssertComRC, except the caller already knows we failed.
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| 51 | *
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| 52 | * @param hrc The COM result code
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| 53 | */
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| 54 | #define AssertComRCFailed(hrc) \
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| 55 | do { AssertMsgFailed(("COM RC = %Rhrc (0x%08X)\n", hrc, hrc)); NOREF(hrc); } while (0)
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| 56 |
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| 57 | /**
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| 58 | * A special version of AssertComRC that returns the given expression
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| 59 | * if the result code is failed.
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| 60 | *
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| 61 | * @param hrc The COM result code
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| 62 | * @param RetExpr The expression to return
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| 63 | */
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| 64 | #define AssertComRCReturn(hrc, RetExpr) \
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| 65 | AssertMsgReturn(SUCCEEDED(hrc), ("COM RC = %Rhrc (0x%08X)\n", hrc, hrc), RetExpr)
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| 66 |
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| 67 | /**
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| 68 | * A special version of AssertComRC that returns the given result code
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| 69 | * if it is failed.
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| 70 | *
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| 71 | * @param hrc The COM result code
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| 72 | */
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| 73 | #define AssertComRCReturnRC(hrc) \
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| 74 | AssertMsgReturn(SUCCEEDED(hrc), ("COM RC = %Rhrc (0x%08X)\n", hrc, hrc), hrc)
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| 75 |
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| 76 | /**
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| 77 | * A special version of AssertComRC that returns if the result code is failed.
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| 78 | *
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| 79 | * @param hrc The COM result code
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| 80 | */
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| 81 | #define AssertComRCReturnVoid(hrc) \
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| 82 | AssertMsgReturnVoid(SUCCEEDED(hrc), ("COM RC = %Rhrc (0x%08X)\n", hrc, hrc))
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| 83 |
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| 84 | /**
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| 85 | * A special version of AssertComRC that evaluates the given expression and
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| 86 | * breaks if the result code is failed.
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| 87 | *
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| 88 | * @param hrc The COM result code
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| 89 | * @param PreBreakExpr The expression to evaluate on failure.
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| 90 | */
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| 91 | #define AssertComRCBreak(hrc, PreBreakExpr) \
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| 92 | if (!SUCCEEDED(hrc)) { AssertComRCFailed(hrc); PreBreakExpr; break; } else do {} while (0)
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| 93 |
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| 94 | /**
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| 95 | * A special version of AssertComRC that evaluates the given expression and
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| 96 | * throws it if the result code is failed.
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| 97 | *
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| 98 | * @param hrc The COM result code
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| 99 | * @param ThrowMeExpr The expression which result to be thrown on failure.
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| 100 | */
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| 101 | #define AssertComRCThrow(hrc, ThrowMeExpr) \
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| 102 | do { if (SUCCEEDED(hrc)) { /*likely*/} else { AssertComRCFailed(hrc); throw (ThrowMeExpr); } } while (0)
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| 103 |
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| 104 | /**
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| 105 | * A special version of AssertComRC that just breaks if the result code is
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| 106 | * failed.
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| 107 | *
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| 108 | * @param hrc The COM result code
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| 109 | */
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| 110 | #define AssertComRCBreakRC(hrc) \
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| 111 | if (!SUCCEEDED(hrc)) { AssertComRCFailed(hrc); break; } else do {} while (0)
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| 112 |
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| 113 | /**
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| 114 | * A special version of AssertComRC that just throws @a hrc if the result code
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| 115 | * is failed.
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| 116 | *
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| 117 | * @param hrc The COM result code
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| 118 | */
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| 119 | #define AssertComRCThrowRC(hrc) \
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| 120 | do { if (SUCCEEDED(hrc)) { /*likely*/ } else { AssertComRCFailed(hrc); throw hrc; } } while (0)
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| 121 |
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| 122 | /** @} */
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| 123 |
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| 124 | #endif /* !VBOX_INCLUDED_com_assert_h */
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| 125 |
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