#
# Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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# by Oracle in the LICENSE file that accompanied this code.
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# This code is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# version 2 for more details (a copy is included in the LICENSE file that
# accompanied this code).
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# 2 along with this work; if not, write to the Free Software Foundation,
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# This must be the first rule
default: all

include $(SPEC)
include MakeBase.gmk
include JavaCompilation.gmk
include SetupJavaCompilers.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
MICROBENCHMARK_INDIFY_DONE := $(MICROBENCHMARK_CLASSES)/_indify.marker

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

# External dependencies
JMH_COMPILE_JARS := $(JMH_CORE_JAR) $(JMH_GENERATOR_JAR)
JMH_RUNTIME_JARS := $(JMH_CORE_JAR) $(JMH_COMMONS_MATH_JAR) $(JMH_JOPT_SIMPLE_JAR)

MICROBENCHMARK_CLASSPATH := $(call PathList, $(JMH_COMPILE_JARS))

# 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 Indify tool

$(eval $(call SetupJavaCompilation, BUILD_INDIFY, \
    SETUP := GENERATE_OLDBYTECODE, \
    SRC := $(TOPDIR)/test/jdk/java/lang/invoke, \
    INCLUDE_FILES := indify/Indify.java, \
    BIN := $(MICROBENCHMARK_TOOLS_CLASSES), \
))

#### Compile Targets

# Building microbenchmark requires the jdk.unsupported and java.management modules,
# and to have sjavac disabled.
$(eval $(call SetupJavaCompiler, MICROBENCHMARK_JAVA_COMPILER, \
    JVM := $(JAVA) --add-modules jdk.unsupported --limit-modules java.management, \
    JAVAC := $(NEW_JAVAC), \
    DISABLE_SJAVAC := true, \
    FLAGS := --upgrade-module-path $(JDK_OUTPUTDIR)/modules --system none $(DISABLE_WARNINGS), \
    SERVER_DIR := $(SJAVAC_SERVER_DIR), \
    SERVER_JVM := $(SJAVAC_SERVER_JAVA), \
))

# Build microbenchmark suite for the current JDK
$(eval $(call SetupJavaCompilation, BUILD_JDK_MICROBENCHMARK, \
    SETUP := MICROBENCHMARK_JAVA_COMPILER, \
    ADD_JAVAC_FLAGS := -cp $(MICROBENCHMARK_CLASSPATH) -Xlint -Xlint:-processing -Werror, \
    SRC := $(MICROBENCHMARK_SRC), \
    BIN := $(MICROBENCHMARK_CLASSES), \
))

$(BUILD_JDK_MICROBENCHMARK): $(JMH_COMPILE_JARS)

# Run Indify
$(MICROBENCHMARK_INDIFY_DONE): $(BUILD_INDIFY) $(BUILD_JDK_MICROBENCHMARK)
	$(call LogWarn, Running Indify on microbenchmark classes)
	$(JAVA_SMALL) -cp $(MICROBENCHMARK_TOOLS_CLASSES) \
	    indify.Indify --overwrite $(MICROBENCHMARK_CLASSES) \
	    $(LOG_DEBUG) 2>&1
	$(TOUCH) $@

# 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) \
        $(MICROBENCHMARK_INDIFY_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), \
    DEST := $(MICROBENCHMARK_IMAGE_DIR)/native, \
    FILES := $(BUILD_MICROBENCHMARK_LIBRARIES), \
    FLATTEN := true, \
))

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

.PHONY: all