#!/bin/sh

#

# Copyright (c) 2010, 2014, Oracle and/or its affiliates. All rights reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

# 

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.

# 

# 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).

# 

# You should have received a copy of the GNU General Public License version

# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

# 

# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

# or visit www.oracle.com if you need additional information or have any

# questions.

#

###########################################################################################

# This is a helper script to evaluate nashorn with optimistic types

# it produces a flight recording for every run, and uses the best 

# known flags for performance for the current configration

###########################################################################################

# Flags to enable assertions, we need the system assertions too, since

# this script runs Nashorn in the BCP to override any nashorn.jar that might

# reside in your $JAVA_HOME/jre/lib/ext/nashorn.jar

#

ENABLE_ASSERTIONS_FLAGS="-ea -esa"

# Flags to instrument lambdaform computation, caching, interpretation and compilation

# Default compile threshold for lambdaforms is 30

#

#LAMBDAFORM_FLAGS="\

#    -Djava.lang.invoke.MethodHandle.COMPILE_THRESHOLD=3 \

#    -Djava.lang.invoke.MethodHandle.DUMP_CLASS_FILES=true \

#    -Djava.lang.invoke.MethodHandle.TRACE_METHOD_LINKAGE=true \

#    -Djava.lang.invoke.MethodHandle.TRACE_INTERPRETER=true"

# Flags to run trusted tests from the Nashorn test suite

#

#TRUSTED_TEST_FLAGS="\

#-Djava.security.manager \

#-Djava.security.policy=../build/nashorn.policy -Dnashorn.debug"

# Testing out new code optimizations using the generic hotspot "new code" parameter

#

#USE_NEW_CODE_FLAGS=-XX:+UnlockDiagnosticVMOptions -XX:+UseNewCode

#

#-Dnashorn.typeInfo.disabled=false \

# and for Nashorn options: 

# --class-cache-size=0 --persistent-code-cache=false 

# Unique timestamped file name for JFR recordings. For JFR, we also have to

# crank up the stack cutoff depth to 1024, because of ridiculously long lambda form

# stack traces.

#

# It is also recommended that you go into $JAVA_HOME/jre/lib/jfr/default.jfc and

# set the "method-sampling-interval" Normal and Maximum sample time as low as you

# can go (10 ms on most platforms). The default is normally higher. The increased

# sampling overhead is usually negligible for Nashorn runs, but the data is better

if [ -z $JFR_FILENAME ]; then

    JFR_FILENAME="./nashorn_$(date|sed "s/ /_/g"|sed "s/:/_/g").jfr"

fi

# Flight recorder

#

# see above - already in place, copy the flags down here to disable

ENABLE_FLIGHT_RECORDER_FLAGS="\

    -XX:+UnlockCommercialFeatures \

    -XX:+FlightRecorder \

    -XX:FlightRecorderOptions=defaultrecording=true,disk=true,dumponexit=true,dumponexitpath=$JFR_FILENAME,stackdepth=1024"

# Type specialization and math intrinsic replacement should be enabled by default in 8u20 and nine,

# keeping this flag around for experimental reasons. Replace + with - to switch it off

#

#ENABLE_TYPE_SPECIALIZATION_FLAGS=-XX:+UseTypeSpeculation

# Same with math intrinsics. They should be enabled by default in 8u20 and 9, so

# this disables them if needed

#

#DISABLE_MATH_INTRINSICS_FLAGS=-XX:-UseMathExactIntrinsics

# Add timing to time the compilation phases.

#ENABLE_TIME_FLAGS=--log=time

# Add ShowHiddenFrames to get lambda form internals on the stack traces

#ENABLE_SHOW_HIDDEN_FRAMES_FLAGS=-XX:+ShowHiddenFrames

# Add print optoassembly to get an asm dump. This requires 1) a debug build, not product,

# That tired compilation is switched off, for C2 only output and that the number of

# compiler threads is set to 1 for determinsm.

#

#PRINT_ASM_FLAGS=-XX:+PrintOptoAssembly -XX:-TieredCompilation -XX:CICompilerCount=1 \

# Tier compile threasholds. Default value is 10. (1-100 is useful for experiments)

#TIER_COMPILATION_THRESHOLD_FLAGS=-XX:IncreaseFirstTierCompileThresholdAt=10

# Directory where to look for nashorn.jar in a dist folder. The default is "..", assuming

# that we run the script from the make dir

DIR=..

NASHORN_JAR=$DIR/dist/nashorn.jar

# The built Nashorn jar is placed first in the bootclasspath to override the JDK

# nashorn.jar in $JAVA_HOME/jre/lib/ext. Thus, we also need -esa, as assertions in

# nashorn count as system assertions in this configuration

# Type profiling default level is 111, 222 adds some compile time, but is faster

$JAVA_HOME/bin/java \

$ENABLE_ASSERTIONS_FLAGS \

$LAMBDAFORM_FLAGS \

$TRUSTED_FLAGS \

$USE_NEW_CODE_FLAGS \

$ENABLE_SHOW_HIDDEN_FRAMES_FLAGS \

$ENABLE_FLIGHT_RECORDER_FLAGS \

$ENABLE_TYPE_SPECIALIZATION_FLAGS \

$TIERED_COMPILATION_THRESOLD_FLAGS \

$DISABLE_MATH_INTRINSICS_FLAGS \

$PRINT_ASM_FLAGS \

-Xbootclasspath/p:$NASHORN_JAR \

-Xms2G -Xmx2G \

-XX:TypeProfileLevel=222 \

-cp $CLASSPATH:../build/test/classes/ \

jdk.nashorn.tools.Shell $ENABLE_TIME_FLAGS ${@}