#
# Copyright (c) 2018, 2024, Oracle and/or its affiliates. All rights reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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# under the terms of the GNU General Public License version 2 only, as
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# by Oracle in the LICENSE file that accompanied this code.
#
# This code is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# accompanied this code).
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# This must be the first rule
default: all

include $(SPEC)
include MakeBase.gmk

include CopyFiles.gmk
include JarArchive.gmk
include JavaCompilation.gmk
include TestFilesCompilation.gmk

ifeq ($(JMH_CORE_JAR), )
  $(info Error: JMH is missing. Please use configure --with-jmh.)
  $(error Cannot continue)
endif

#### Variables

MICROBENCHMARK_SRC := $(TOPDIR)/test/micro
MICROBENCHMARK_IMAGE_DIR := $(TEST_IMAGE_DIR)/micro
MICROBENCHMARK_JAR := $(MICROBENCHMARK_IMAGE_DIR)/benchmarks.jar

MICROBENCHMARK_OUTPUT := $(SUPPORT_OUTPUTDIR)/test/micro
MICROBENCHMARK_CLASSES := $(MICROBENCHMARK_OUTPUT)/classes
MICROBENCHMARK_JAR_BIN := $(MICROBENCHMARK_OUTPUT)/jar

MICROBENCHMARK_TOOLS_CLASSES := $(MICROBENCHMARK_OUTPUT)/tools-classes

JMH_UNPACKED_DIR := $(MICROBENCHMARK_OUTPUT)/jmh_jars
JMH_UNPACKED_JARS_DONE := $(JMH_UNPACKED_DIR)/_unpacked.marker

# External dependencies
WHITEBOX_JAR := $(SUPPORT_OUTPUTDIR)/test/lib/wb.jar
JMH_COMPILE_JARS := $(JMH_CORE_JAR) $(JMH_GENERATOR_JAR) $(WHITEBOX_JAR)
JMH_RUNTIME_JARS := $(JMH_CORE_JAR) $(JMH_COMMONS_MATH_JAR) $(JMH_JOPT_SIMPLE_JAR)

# Native dependencies
MICROBENCHMARK_NATIVE_SRC_DIRS := $(MICROBENCHMARK_SRC)
MICROBENCHMARK_NATIVE_OUTPUT := $(MICROBENCHMARK_OUTPUT)/native
MICROBENCHMARK_NATIVE_EXCLUDE :=

###

# Need double \n to get new lines and no trailing spaces
MICROBENCHMARK_MANIFEST := Build: $(FULL_VERSION)\n\
\nJMH-Version: $(JMH_VERSION)\n\
\nName: OpenJDK Microbenchmark Suite

#### Compile Targets

# Building microbenchmark requires the jdk.unsupported and java.management modules.
# sun.security.util is required to compile Cache benchmark.
# jmh uses annotation processors to generate the benchmark jar and thus
# requires the use of -processor option during benchmark compilation.

# Build microbenchmark suite for the current JDK
$(eval $(call SetupJavaCompilation, BUILD_JDK_MICROBENCHMARK, \
    TARGET_RELEASE := $(TARGET_RELEASE_NEWJDK_UPGRADED), \
    SMALL_JAVA := false, \
    CLASSPATH := $(JMH_COMPILE_JARS), \
    CREATE_API_DIGEST := true, \
    DISABLED_WARNINGS := restricted this-escape processing rawtypes removal cast \
        serial preview dangling-doc-comments, \
    SRC := $(MICROBENCHMARK_SRC), \
    BIN := $(MICROBENCHMARK_CLASSES), \
    JAVAC_FLAGS := \
        --add-exports java.base/jdk.internal.classfile.impl=ALL-UNNAMED \
        --add-exports java.base/jdk.internal.event=ALL-UNNAMED \
        --add-exports java.base/jdk.internal.foreign=ALL-UNNAMED \
        --add-exports java.base/jdk.internal.misc=ALL-UNNAMED \
        --add-exports java.base/jdk.internal.util=ALL-UNNAMED \
        --add-exports java.base/jdk.internal.org.objectweb.asm.tree=ALL-UNNAMED \
        --add-exports java.base/jdk.internal.org.objectweb.asm=ALL-UNNAMED \
        --add-exports java.base/jdk.internal.vm=ALL-UNNAMED \
        --add-exports java.base/sun.invoke.util=ALL-UNNAMED \
        --add-exports java.base/sun.security.util=ALL-UNNAMED \
        --add-exports java.base/sun.security.util.math=ALL-UNNAMED \
        --add-exports java.base/sun.security.util.math.intpoly=ALL-UNNAMED \
        --enable-preview \
        -XDsuppressNotes \
        -processor org.openjdk.jmh.generators.BenchmarkProcessor, \
    JAVA_FLAGS := \
        --add-exports java.base/jdk.internal.vm=ALL-UNNAMED \
        --add-modules jdk.unsupported \
        --enable-preview \
        --limit-modules java.management, \
))

$(BUILD_JDK_MICROBENCHMARK): $(JMH_COMPILE_JARS)

# Unpacking dependencies for inclusion in the benchmark JARs
$(JMH_UNPACKED_JARS_DONE): $(JMH_RUNTIME_JARS)
	$(RM) -r $(JMH_UNPACKED_DIR)
	$(MKDIR) -p $(JMH_UNPACKED_DIR)
	$(foreach jar, $(JMH_RUNTIME_JARS), \
            $$($(UNZIP) -oq $(jar) -d $(JMH_UNPACKED_DIR)))
	$(RM) -r $(JMH_UNPACKED_DIR)/META-INF
	$(RM) $(JMH_UNPACKED_DIR)/*.xml
	$(TOUCH) $@

# Create benchmarks JAR file with benchmarks for both the old and new JDK
$(eval $(call SetupJarArchive, BUILD_JDK_JAR, \
    DEPENDENCIES := $(BUILD_JDK_MICROBENCHMARK) $(JMH_UNPACKED_JARS_DONE), \
    SRCS := $(MICROBENCHMARK_CLASSES) $(JMH_UNPACKED_DIR), \
    BIN := $(MICROBENCHMARK_JAR_BIN), \
    SUFFIXES := .*, \
    EXCLUDE_FILES := _the.BUILD_JDK_MICROBENCHMARK_batch \
        _the.BUILD_JDK_MICROBENCHMARK.vardeps _unpacked.marker, \
    EXTRA_MANIFEST_ATTR := $(MICROBENCHMARK_MANIFEST), \
    JARMAIN := org.openjdk.jmh.Main, \
    JAR := $(MICROBENCHMARK_JAR), \
))

# Setup compilation of native library dependencies
$(eval $(call SetupTestFilesCompilation, BUILD_MICROBENCHMARK_LIBRARIES, \
    TYPE := LIBRARY, \
    SOURCE_DIRS := $(MICROBENCHMARK_NATIVE_SRC_DIRS), \
    OUTPUT_DIR := $(MICROBENCHMARK_NATIVE_OUTPUT), \
    EXCLUDE := $(MICROBENCHMARK_NATIVE_EXCLUDE), \
))

# Setup copy of native dependencies to image output dir
$(eval $(call SetupCopyFiles, COPY_MICROBENCHMARK_NATIVE, \
    SRC := $(MICROBENCHMARK_NATIVE_OUTPUT)/lib, \
    DEST := $(MICROBENCHMARK_IMAGE_DIR)/native, \
    FILES := $(filter $(MICROBENCHMARK_NATIVE_OUTPUT)/lib/%, \
        $(BUILD_MICROBENCHMARK_LIBRARIES)), \
))

all: $(MICROBENCHMARK_JAR) $(BUILD_MICROBENCHMARK_LIBRARIES) $(COPY_MICROBENCHMARK_NATIVE)

.PHONY: all