WinProcessInfo : Sample Windows process information

Objective

Provide for a simple "stats" for a daemon/service without the heft of the full process information library.

• Minimal footprint
• Serializer for nlohmann::json (you must include the library prior to this header file)
• Serializer for std::format (if supported by your compiler)

Requirements

• We use nlohmann::json only in our tests and the library is aware to provide a conversion operator if library is detected.
• We use std::format if present

Usage

• Use the nuget SiddiqSoft.WinProcessInfo
• Copy paste..whatever works.

Interface

WinProcessInfo
- uptime()
- snapshot()
- serializer for nlohmann::json
- serializer for std::format

Example

#include "gtest/gtest.h"
#include <format>
#include "nlohmann/json.hpp"
#include "siddiqsoft/WinProcessInfo.hpp"

TEST(examples, Example2)
{
   try {
      siddiqsoft::WinProcessInfo procInfo;

      // We must perform the snapshot to obtain memory and thread usage
      procInfo.snapshot();

      // tip: do not use brace-init/assignment as it will create an array instead of object!
      nlohmann::json info(procInfo);

      std::cerr << info.dump() << std::endl;
      EXPECT_EQ(GetCurrentProcessId(), info.value("processId", 0));
   }
   catch (std::exception& e) {
      EXPECT_TRUE(false) << e.what(); // if we throw then the test fails.
   }
}

Output

Member Field	json Field	Comments
cpuCores	cpuCount	Number of cores/cpu
cpuHandles	cpuHandles	Handle count
cpuThreads	cpuThreads	Thread count. This is expensive.
memPeakWorkingSet	memPeakWorkingSet	Peak virtual working memory in Kbytes.
memWorkingSet	memWorkingSet	Current working set in Kbytes.
memPrivate	memPrivate	Current physically allocated memory for this process in Kbytes.
nameHostname	hostname	The local hostname
nameDomainName	domain	The fully qualified domain portion
nameHostnamePhysical	localFqdn	The local physical hostname
nameFqdn	fqdn	The fully qualified dns name
processId	processId	The process id
timeStartup	timeStartup	The startup timestamp as ISO 8601 format. This is the time of instance of this object.
	timeCurrent	The current timestamp as ISO 8601 format when the serialization took place.
	uptime	The number of microseconds between the timeStartup and timeCurrent. Use the method uptime() and duration_cast<> to your desired ratio.

{
    "cpuCores": 8,
    "cpuHandles": 48,
    "cpuThreads": 4,
    "domain": "",
    "fqdn": "istanbul",
    "hostname": "istanbul",
    "localFqdn": "istanbul",
    "memPeakWorkingSet": 42960, // KBytes
    "memPrivateBytes": 84452,   // Kbytes
    "memWorkingSet": 42584,     // Kbytes
    "processId": 10828,
    "timeCurrent": "2021-07-30T06:43:54.8649027Z",
    "timeStartup": "2021-07-30T06:43:54.8599558Z",
    "uptime": 5124              // Microseconds
}

© 2021 Siddiq Software LLC. All rights reserved.