Remove java.lang.Compiler for Java 21+

jcl/src/java.base/share/classes/java/lang/Compiler.java

@@ -1,6 +1,4 @@
-/*[INCLUDE-IF Sidecar16]*/
-package java.lang;
-
+/*[INCLUDE-IF JAVA_SPEC_VERSION < 21]*/
 /*******************************************************************************
  * Copyright IBM Corp. and others 1998
  *
@@ -22,7 +20,8 @@
  *
  * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
  *******************************************************************************/
-
+package java.lang;
+
 /**
  * This class is a placeholder for environments which
  * explicitly manage the action of a "Just In Time"
@@ -82,8 +81,8 @@ public static boolean compileClass(Class<?> classToCompile) {
 
 /**
  * Compiles all classes whose name matches the argument
- * using the JIT compiler. Answers true if the compilation 
- * was successful, or false if it failed or there was no 
+ * using the JIT compiler. Answers true if the compilation
+ * was successful, or false if it failed or there was no
  * JIT compiler available.
  *
  * @return		boolean

runtime/tests/CMakeLists.txt

@@ -20,6 +20,7 @@
 # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
 ################################################################################
 
+add_subdirectory(access)
 if(OMR_OS_AIX)
 	add_subdirectory(aixerrmsg)
 endif()

runtime/tests/access/CMakeLists.txt

@@ -0,0 +1,34 @@
+################################################################################
+# Copyright IBM Corp. and others 2023
+#
+# This program and the accompanying materials are made available under
+# the terms of the Eclipse Public License 2.0 which accompanies this
+# distribution and is available at https://www.eclipse.org/legal/epl-2.0/
+# or the Apache License, Version 2.0 which accompanies this distribution and
+# is available at https://www.apache.org/licenses/LICENSE-2.0.
+#
+# This Source Code may also be made available under the following
+# Secondary Licenses when the conditions for such availability set
+# forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
+# General Public License, version 2 with the GNU Classpath
+# Exception [1] and GNU General Public License, version 2 with the
+# OpenJDK Assembly Exception [2].
+#
+# [1] https://www.gnu.org/software/classpath/license.html
+# [2] https://openjdk.org/legal/assembly-exception.html
+#
+# SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
+################################################################################
+
+j9vm_add_library(access SHARED
+	compiler.cpp
+)
+
+target_link_libraries(access
+	PRIVATE
+		j9vm_interface
+)
+
+omr_add_exports(access
+	Java_org_openj9_test_util_CompilerAccess_registerNatives
+)

runtime/tests/access/compiler.cpp

@@ -0,0 +1,126 @@
+/*******************************************************************************
+ * Copyright IBM Corp. and others 2023
+ *
+ * This program and the accompanying materials are made available under
+ * the terms of the Eclipse Public License 2.0 which accompanies this
+ * distribution and is available at https://www.eclipse.org/legal/epl-2.0/
+ * or the Apache License, Version 2.0 which accompanies this distribution and
+ * is available at https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * This Source Code may also be made available under the following
+ * Secondary Licenses when the conditions for such availability set
+ * forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
+ * General Public License, version 2 with the GNU Classpath
+ * Exception [1] and GNU General Public License, version 2 with the
+ * OpenJDK Assembly Exception [2].
+ *
+ * [1] https://www.gnu.org/software/classpath/license.html
+ * [2] https://openjdk.org/legal/assembly-exception.html
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
+ *******************************************************************************/
+
+/**
+ * @file compiler.cpp
+ * @brief File is compiled into shared library (access)
+ * in support of org.openj9.test.util.CompilerAccess.
+ */
+
+#include "j9.h"
+#include "j9lib.h"
+#include "jni.h"
+
+struct NativeMapping
+{
+	const char *methodName;
+	const char *methodSignature;
+	const char *implementationName;
+	const char *implementationSignature;
+};
+
+static const NativeMapping mappings[] =
+{
+	{
+		"commandImpl",
+		"(Ljava/lang/Object;)Ljava/lang/Object;",
+		"Java_java_lang_Compiler_commandImpl",
+		"LLLL"
+	},
+	{
+		"compileClassImpl",
+		"(Ljava/lang/Class;)Z",
+		"Java_java_lang_Compiler_compileClassImpl",
+		"ZLLL"
+	},
+	{
+		"compileClassesImpl",
+		"(Ljava/lang/String;)Z",
+		"Java_java_lang_Compiler_compileClassesImpl",
+		"ZLLL"
+	},
+	{
+		"disable",
+		"()V",
+		"Java_java_lang_Compiler_disable",
+		"VLL"
+	},
+	{
+		"enable",
+		"()V",
+		"Java_java_lang_Compiler_enable",
+		"VLL"
+	},
+};
+
+#define METHOD_COUNT (sizeof(mappings) / sizeof(mappings[0]))
+
+extern "C" jboolean
+Java_org_openj9_test_util_CompilerAccess_registerNatives(JNIEnv *env, jclass clazz)
+{
+	jboolean result = JNI_FALSE;
+	PORT_ACCESS_FROM_ENV(env);
+	uintptr_t j9jcl = 0;
+	JNINativeMethod methods[METHOD_COUNT];
+
+	if ((0 != j9sl_open_shared_library((char *)J9_JAVA_SE_DLL_NAME, &j9jcl, OMRPORT_SLOPEN_DECORATE))
+		|| (0 == j9jcl)
+	) {
+		j9tty_printf(PORTLIB,"CompilerAccess: could not open %s.\n", J9_JAVA_SE_DLL_NAME);
+		goto done;
+	}
+
+	for (uintptr_t i = 0; i < METHOD_COUNT; ++i) {
+		const NativeMapping *mapping = &mappings[i];
+		JNINativeMethod *method = &methods[i];
+		uintptr_t function = 0;
+
+		if ((0 != j9sl_lookup_name(
+				j9jcl,
+				(char *)mapping->implementationName,
+				&function,
+				(char *)mapping->implementationSignature))
+			|| (0 == function)
+		) {
+			j9tty_printf(PORTLIB,"CompilerAccess: '%s' not found.\n", mapping->implementationName);
+			goto done;
+		}
+
+		method->name      = (char *)mapping->methodName;
+		method->signature = (char *)mapping->methodSignature;
+		method->fnPtr     = (void *)function;
+	}
+
+	if (JNI_OK != env->RegisterNatives(clazz, methods, METHOD_COUNT)) {
+		j9tty_printf(PORTLIB,"CompilerAccess: RegisterNatives failed.\n");
+		goto done;
+	}
+
+	result = JNI_TRUE;
+
+done:
+	if (0 != j9jcl) {
+		j9sl_close_shared_library(j9jcl);
+	}
+
+	return result;
+}

runtime/tests/access/module.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+Copyright IBM Corp. and others 2023
+
+This program and the accompanying materials are made available under
+the terms of the Eclipse Public License 2.0 which accompanies this
+distribution and is available at https://www.eclipse.org/legal/epl-2.0/
+or the Apache License, Version 2.0 which accompanies this distribution and
+is available at https://www.apache.org/licenses/LICENSE-2.0.
+
+This Source Code may also be made available under the following
+Secondary Licenses when the conditions for such availability set
+forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
+General Public License, version 2 with the GNU Classpath
+Exception [1] and GNU General Public License, version 2 with the
+OpenJDK Assembly Exception [2].
+
+[1] https://www.gnu.org/software/classpath/license.html
+[2] https://openjdk.org/legal/assembly-exception.html
+
+SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
+-->
+<module xmlns:xi="http://www.w3.org/2001/XInclude">
+	<exports group="all">
+		<export name="Java_org_openj9_test_util_CompilerAccess_registerNatives"/>
+	</exports>
+	<artifact type="shared" name="access" appendrelease="false">
+		<phase>core quick j2se</phase>
+		<exports>
+			<group name="all"/>
+		</exports>
+		<includes>
+			<include path="j9include"/>
+			<include path="j9oti"/>
+		</includes>
+	</artifact>
+</module>