Fix OOME: Metaspace (#2678)

* Fix OOME: Metaspace

* Add stress test

* Run sample analysis from `Dispatchers.Default`

9 files changed, 371 insertions, 0 deletions

diff --git a/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/build.gradle.kts b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/build.gradle.kts
new file mode 100644
index 00000000..f180628f
--- /dev/null
+++ b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/build.gradle.kts
@@ -0,0 +1,45 @@
+import org.jetbrains.dokka.gradle.DokkaTask
+import org.jetbrains.dokka.gradle.kotlinSourceSet
+import org.jetbrains.dokka.base.DokkaBase
+import org.jetbrains.dokka.base.DokkaBaseConfiguration
+import org.jetbrains.dokka.DokkaConfiguration
+import java.net.URL
+
+plugins {
+    kotlin("jvm")
+    id("org.jetbrains.dokka")
+}
+
+buildscript {
+    dependencies {
+        classpath("org.jetbrains.dokka:dokka-base:${System.getenv("DOKKA_VERSION")}")
+    }
+}
+
+apply(from = "../template.root.gradle.kts")
+
+dependencies {
+    implementation(kotlin("stdlib"))
+}
+
+fun createTask(name: String) {
+    tasks.register(name, org.jetbrains.dokka.gradle.DokkaTask::class) {
+        dokkaSourceSets {
+            moduleName.set("Some example")
+            register("kotlin-stdlib-common") {
+                sourceRoots.from("src/main/java")
+                sourceRoots.from("src/main/kotlin")
+                samples.from("src/main/kotlin")
+            }
+        }
+    }
+}
+
+task("runTasks") {
+    val taskNumber = (properties["task_number"] as String).toInt()
+    repeat(taskNumber) { i ->
+        createTask("task_"+i)
+        dependsOn ("task_"+i)
+    }
+}
+
diff --git a/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/gradle.properties b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/gradle.properties
new file mode 100644
index 00000000..5cc792c8
--- /dev/null
+++ b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/gradle.properties
@@ -0,0 +1,2 @@
+dokka_it_kotlin_version=1.7.20
+task_number=100
\ No newline at end of file
diff --git a/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/gradle/wrapper/gradle-wrapper.jar b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..62d4c053
--- /dev/null
+++ b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/gradle/wrapper/gradle-wrapper.jar
diff --git a/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/gradle/wrapper/gradle-wrapper.properties b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..ec991f9a
--- /dev/null
+++ b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.9.2-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/gradlew b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/gradlew
new file mode 100755
index 00000000..fbd7c515
--- /dev/null
+++ b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/gradlew
@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"
diff --git a/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/gradlew.bat b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/gradlew.bat
new file mode 100644
index 00000000..a9f778a7
--- /dev/null
+++ b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/gradlew.bat
@@ -0,0 +1,104 @@
+@rem

+@rem Copyright 2015 the original author or authors.

+@rem

+@rem Licensed under the Apache License, Version 2.0 (the "License");

+@rem you may not use this file except in compliance with the License.

+@rem You may obtain a copy of the License at

+@rem

+@rem      https://www.apache.org/licenses/LICENSE-2.0

+@rem

+@rem Unless required by applicable law or agreed to in writing, software

+@rem distributed under the License is distributed on an "AS IS" BASIS,

+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+@rem See the License for the specific language governing permissions and

+@rem limitations under the License.

+@rem

+

+@if "%DEBUG%" == "" @echo off

+@rem ##########################################################################

+@rem

+@rem  Gradle startup script for Windows

+@rem

+@rem ##########################################################################

+

+@rem Set local scope for the variables with windows NT shell

+if "%OS%"=="Windows_NT" setlocal

+

+set DIRNAME=%~dp0

+if "%DIRNAME%" == "" set DIRNAME=.

+set APP_BASE_NAME=%~n0

+set APP_HOME=%DIRNAME%

+

+@rem Resolve any "." and ".." in APP_HOME to make it shorter.

+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi

+

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"

+

+@rem Find java.exe

+if defined JAVA_HOME goto findJavaFromJavaHome

+

+set JAVA_EXE=java.exe

+%JAVA_EXE% -version >NUL 2>&1

+if "%ERRORLEVEL%" == "0" goto init

+

+echo.

+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:findJavaFromJavaHome

+set JAVA_HOME=%JAVA_HOME:"=%

+set JAVA_EXE=%JAVA_HOME%/bin/java.exe

+

+if exist "%JAVA_EXE%" goto init

+

+echo.

+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:init

+@rem Get command-line arguments, handling Windows variants

+

+if not "%OS%" == "Windows_NT" goto win9xME_args

+

+:win9xME_args

+@rem Slurp the command line arguments.

+set CMD_LINE_ARGS=

+set _SKIP=2

+

+:win9xME_args_slurp

+if "x%~1" == "x" goto execute

+

+set CMD_LINE_ARGS=%*

+

+:execute

+@rem Setup the command line

+

+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar

+

+

+@rem Execute Gradle

+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%

+

+:end

+@rem End local scope for the variables with windows NT shell

+if "%ERRORLEVEL%"=="0" goto mainEnd

+

+:fail

+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of

+rem the _cmd.exe /c_ return code!

+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1

+exit /b 1

+

+:mainEnd

+if "%OS%"=="Windows_NT" endlocal

+

+:omega

diff --git a/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/settings.gradle.kts b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/settings.gradle.kts
new file mode 100644
index 00000000..56b52de2
--- /dev/null
+++ b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/settings.gradle.kts
@@ -0,0 +1,5 @@
+@file:Suppress("LocalVariableName", "UnstableApiUsage")
+
+apply(from = "../template.settings.gradle.kts")
+rootProject.name = "it-sequential-tasks-execution-stress"
+
diff --git a/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/src/main/java/it/basic/java/SampleJavaClass.java b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/src/main/java/it/basic/java/SampleJavaClass.java
new file mode 100644
index 00000000..23b0202c
--- /dev/null
+++ b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/src/main/java/it/basic/java/SampleJavaClass.java
@@ -0,0 +1,17 @@
+package it.basic.java;
+
+import it.basic.PublicClass;
+
+/**
+ * This class is, unlike {@link PublicClass}, written in Java
+ */
+@SuppressWarnings("unused")
+public class SampleJavaClass {
+
+    /**
+     * @return Empty instance of {@link PublicClass}
+     */
+    public PublicClass publicDocumentedFunction() {
+        return new PublicClass();
+    }
+}
diff --git a/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/src/main/kotlin/RootPackageClass.kt b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/src/main/kotlin/RootPackageClass.kt
new file mode 100644
index 00000000..8ff6c750
--- /dev/null
+++ b/integration-tests/gradle/projects/it-sequential-tasks-execution-stress/src/main/kotlin/RootPackageClass.kt
@@ -0,0 +1,8 @@
+@file:Suppress("unused")
+
+/**
+ * A class that lives inside the root package
+ */
+class RootPackageClass {
+    val description = "I do live in the root package!"
+}