| 1 | /* $Id: */
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| 2 | /** @file
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| 3 | * VBoxWatchdogUtils - Misc. utility functions for modules.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2011-2012 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.virtualbox.org. 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 |
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| 18 |
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| 19 | /*******************************************************************************
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| 20 | * Header Files *
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| 21 | *******************************************************************************/
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| 22 | #include <VBox/com/array.h>
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| 23 | #include "VBoxWatchdogInternal.h"
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| 24 |
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| 25 |
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| 26 | /**
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| 27 | * Retrieves a metric from a specified machine.
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| 28 | *
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| 29 | * @return IPRT status code.
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| 30 | * @param pMachine Pointer to the machine's internal structure.
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| 31 | * @param strName Name of metric to retrieve.
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| 32 | * @param pulData Pointer to value to retrieve the actual metric value.
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| 33 | */
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| 34 | int getMetric(PVBOXWATCHDOG_MACHINE pMachine, const Bstr& strName, LONG *pulData)
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| 35 | {
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| 36 | AssertPtrReturn(pMachine, VERR_INVALID_POINTER);
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| 37 | AssertPtrReturn(pulData, VERR_INVALID_POINTER);
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| 38 |
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| 39 | /* Input. */
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| 40 | com::SafeArray<BSTR> metricNames(1);
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| 41 | com::SafeIfaceArray<IUnknown> metricObjects(1);
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| 42 | pMachine->machine.queryInterfaceTo(&metricObjects[0]);
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| 43 |
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| 44 | /* Output. */
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| 45 | com::SafeArray<BSTR> retNames;
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| 46 | com::SafeIfaceArray<IUnknown> retObjects;
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| 47 | com::SafeArray<BSTR> retUnits;
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| 48 | com::SafeArray<ULONG> retScales;
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| 49 | com::SafeArray<ULONG> retSequenceNumbers;
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| 50 | com::SafeArray<ULONG> retIndices;
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| 51 | com::SafeArray<ULONG> retLengths;
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| 52 | com::SafeArray<LONG> retData;
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| 53 |
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| 54 | /* Query current memory free. */
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| 55 | strName.cloneTo(&metricNames[0]);
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| 56 | #ifdef VBOX_BALLOONCTRL_GLOBAL_PERFCOL
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| 57 | Assert(!g_pPerfCollector.isNull());
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| 58 | HRESULT hrc = g_pPerfCollector->QueryMetricsData(
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| 59 | #else
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| 60 | Assert(!pMachine->collector.isNull());
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| 61 | HRESULT hrc = pMachine->collector->QueryMetricsData(
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| 62 | #endif
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| 63 | ComSafeArrayAsInParam(metricNames),
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| 64 | ComSafeArrayAsInParam(metricObjects),
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| 65 | ComSafeArrayAsOutParam(retNames),
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| 66 | ComSafeArrayAsOutParam(retObjects),
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| 67 | ComSafeArrayAsOutParam(retUnits),
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| 68 | ComSafeArrayAsOutParam(retScales),
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| 69 | ComSafeArrayAsOutParam(retSequenceNumbers),
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| 70 | ComSafeArrayAsOutParam(retIndices),
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| 71 | ComSafeArrayAsOutParam(retLengths),
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| 72 | ComSafeArrayAsOutParam(retData));
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| 73 | #if 0
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| 74 | /* Useful for metrics debugging. */
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| 75 | for (unsigned j = 0; j < retNames.size(); j++)
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| 76 | {
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| 77 | Bstr metricUnit(retUnits[j]);
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| 78 | Bstr metricName(retNames[j]);
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| 79 | RTPrintf("%-20ls ", metricName.raw());
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| 80 | const char *separator = "";
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| 81 | for (unsigned k = 0; k < retLengths[j]; k++)
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| 82 | {
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| 83 | if (retScales[j] == 1)
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| 84 | RTPrintf("%s%d %ls", separator, retData[retIndices[j] + k], metricUnit.raw());
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| 85 | else
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| 86 | RTPrintf("%s%d.%02d%ls", separator, retData[retIndices[j] + k] / retScales[j],
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| 87 | (retData[retIndices[j] + k] * 100 / retScales[j]) % 100, metricUnit.raw());
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| 88 | separator = ", ";
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| 89 | }
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| 90 | RTPrintf("\n");
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| 91 | }
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| 92 | #endif
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| 93 |
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| 94 | if (SUCCEEDED(hrc))
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| 95 | *pulData = retData.size() ? retData[retIndices[0]] : 0;
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| 96 |
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| 97 | return SUCCEEDED(hrc) ? VINF_SUCCESS : VINF_NOT_SUPPORTED;
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| 98 | }
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| 99 |
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| 100 | /**
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| 101 | * Returns the payload of a machine.
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| 102 | *
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| 103 | * @return void* Pointer to payload data. Mutable!
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| 104 | * @param pMachine Machine to get payload for.
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| 105 | * @param pszModule Module name to get payload from.
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| 106 | */
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| 107 | void* getPayload(PVBOXWATCHDOG_MACHINE pMachine, const char *pszModule)
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| 108 | {
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| 109 | AssertPtrReturn(pMachine, NULL);
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| 110 | AssertPtrReturn(pszModule, NULL);
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| 111 | mapPayloadIter it = pMachine->payload.find(pszModule);
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| 112 | if (it == pMachine->payload.end())
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| 113 | return NULL;
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| 114 | Assert(it->second.cbPayload);
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| 115 | return it->second.pvPayload;
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| 116 | }
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| 117 |
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