[workspace model] add utility to dump memory snapshot

GitOrigin-RevId: cd6f049ffc5b0f83fb98ef002dd3a9d453d12e19

platform/workspaceModel-ide-tests/testSrc/com/intellij/workspace/jps/WorkspaceModelMemoryDumper.kt

@@ -0,0 +1,35 @@
+// Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+package com.intellij.workspace.jps
+
+import com.intellij.openapi.application.PathManager
+import com.intellij.openapi.util.io.FileUtil
+import com.intellij.testFramework.TestApplicationManager
+import com.intellij.util.MemoryDumpHelper
+import com.intellij.util.SystemProperties
+import com.intellij.workspace.api.TypedEntityStorage
+import com.intellij.workspace.api.TypedEntityStorageBuilder
+import com.intellij.workspace.ide.VirtualFileUrlManagerImpl
+import java.io.File
+import java.nio.file.Paths
+import kotlin.system.exitProcess
+
+/**
+ * Dumps memory snapshot for workspace model of IDEA Ultimate project to user home directory
+ */
+fun main() {
+  TestApplicationManager.getInstance()
+  val data = loadProject()
+  val dumpFile = File(SystemProperties.getUserHome(), "workspace-model.hprof")
+  FileUtil.delete(dumpFile)
+  MemoryDumpHelper.captureMemoryDump(dumpFile.absolutePath)
+  println(data)
+  exitProcess(0)
+}
+
+private fun loadProject(): Pair<JpsProjectSerializers, TypedEntityStorage> {
+  val builder = TypedEntityStorageBuilder.create()
+  val virtualFileManager = VirtualFileUrlManagerImpl()
+  val projectDir = File(PathManager.getHomePath()).asConfigLocation(virtualFileManager)
+  val serializers = JpsProjectEntitiesLoader.loadProject(projectDir, builder, Paths.get("/tmp"), virtualFileManager)
+  return Pair(serializers, builder.toStorage())
+}