116 lines
6.2 KiB
Go
116 lines
6.2 KiB
Go
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// Copyright (c) 2010 The win Authors. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// 3. The names of the authors may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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// IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// This is the official list of 'win' authors for copyright purposes.
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//
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// Alexander Neumann <an2048@googlemail.com>
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// Joseph Watson <jtwatson@linux-consulting.us>
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// Kevin Pors <krpors@gmail.com>
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//go:build windows
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package win_perf_counters
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// pdhFmtCountervalueDouble is a union specialization for double values
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type pdhFmtCountervalueDouble struct {
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CStatus uint32
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DoubleValue float64
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}
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type pdhFmtCountervalueItemDouble struct {
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SzName *uint16
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FmtValue pdhFmtCountervalueDouble
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}
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// pdhCounterInfo structure contains information describing the properties of a counter. This information also includes the counter path.
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type pdhCounterInfo struct {
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//Size of the structure, including the appended strings, in bytes.
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DwLength uint32
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//Counter type. For a list of counter types, see the Counter Types section
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//of the Windows Server 2003 Deployment Kit (http://go.microsoft.com/fwlink/p/?linkid=84422).
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//The counter type constants are defined in Winperf.h.
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DwType uint32
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//Counter version information. Not used.
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CVersion uint32
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//Counter status that indicates if the counter value is valid. For a list of possible values,
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//see <a href="https://msdn.microsoft.com/en-us/library/windows/desktop/aa371894(v=vs.85).aspx">Checking PDH Interface Return Values</a>.
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CStatus uint32
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//Scale factor to use when computing the displayable value of the counter. The scale factor is a power of ten.
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//The valid range of this parameter is PDH_MIN_SCALE (–7) (the returned value is the actual value times 10–⁷) to
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//PDH_MAX_SCALE (+7) (the returned value is the actual value times 10⁺⁷). A value of zero will set the scale to one, so that the actual value is returned
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LScale int32
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//Default scale factor as suggested by the counter's provider.
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LDefaultScale int32
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//The value passed in the dwUserData parameter when calling pdhAddCounter.
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DwUserData *uint32
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//The value passed in the dwUserData parameter when calling pdhOpenQuery.
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DwQueryUserData *uint32
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//Null-terminated string that specifies the full counter path. The string follows this structure in memory.
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SzFullPath *uint16 // pointer to a string
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//Null-terminated string that contains the name of the computer specified in the counter path. Is NULL, if the path does not specify a computer.
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//The string follows this structure in memory.
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SzMachineName *uint16 // pointer to a string
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//Null-terminated string that contains the name of the performance object specified in the counter path. The string follows this structure in memory.
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SzObjectName *uint16 // pointer to a string
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//Null-terminated string that contains the name of the object instance specified in the counter path. Is NULL, if the path does not specify an instance.
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//The string follows this structure in memory.
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SzInstanceName *uint16 // pointer to a string
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//Null-terminated string that contains the name of the parent instance specified in the counter path.
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//Is NULL, if the path does not specify a parent instance.
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//The string follows this structure in memory.
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SzParentInstance *uint16 // pointer to a string
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//Instance index specified in the counter path. Is 0, if the path does not specify an instance index.
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DwInstanceIndex uint32 // pointer to a string
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//Null-terminated string that contains the counter name. The string follows this structure in memory.
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SzCounterName *uint16 // pointer to a string
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//Help text that describes the counter. Is NULL if the source is a log file.
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SzExplainText *uint16 // pointer to a string
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//Start of the string data that is appended to the structure.
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DataBuffer [1]uint32 // pointer to an extra space
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}
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// The pdhRawCounter structure returns the data as it was collected from the counter provider.
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// No translation, formatting, or other interpretation is performed on the data.
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type pdhRawCounter struct {
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// Counter status that indicates if the counter value is valid. Check this member before using the data in a calculation or displaying its value.
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// For a list of possible values, see https://docs.microsoft.com/windows/desktop/PerfCtrs/checking-pdh-interface-return-values
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CStatus uint32
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// Local time for when the data was collected
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TimeStamp fileTime
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// First raw counter value.
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FirstValue int64
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// Second raw counter value. Rate counters require two values in order to compute a displayable value.
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SecondValue int64
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// If the counter type contains the PERF_MULTI_COUNTER flag, this member contains the additional counter data used in the calculation.
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// For example, the PERF_100NSEC_MULTI_TIMER counter type contains the PERF_MULTI_COUNTER flag.
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MultiCount uint32
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}
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type pdhRawCounterItem struct {
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// Pointer to a null-terminated string that specifies the instance name of the counter. The string is appended to the end of this structure.
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SzName *uint16
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//A pdhRawCounter structure that contains the raw counter value of the instance
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RawValue pdhRawCounter
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}
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