#

# Copyright (c) 2011, 2012, 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.  Oracle designates this

# particular file as subject to the "Classpath" exception as provided

# 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

# 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.

#

AC_DEFUN([BPERF_CHECK_CORES],

[

    AC_MSG_CHECKING([for number of cores])

    NUM_CORES=1

    FOUND_CORES=no

    if test -f /proc/cpuinfo; then

        # Looks like a Linux (or cygwin) system

        NUM_CORES=`cat /proc/cpuinfo  | grep -c processor`

        FOUND_CORES=yes

    elif test -x /usr/sbin/psrinfo; then

        # Looks like a Solaris system

        NUM_CORES=`LC_MESSAGES=C /usr/sbin/psrinfo -v | grep -c on-line`

        FOUND_CORES=yes

    elif test -x /usr/sbin/system_profiler; then

        # Looks like a MacOSX system

        NUM_CORES=`/usr/sbin/system_profiler -detailLevel full SPHardwareDataType | grep 'Cores' | awk  '{print [$]5}'`

        FOUND_CORES=yes

    elif test -n "$NUMBER_OF_PROCESSORS"; then

        # On windows, look in the env

        NUM_CORES=$NUMBER_OF_PROCESSORS

        FOUND_CORES=yes

    fi

    if test "x$FOUND_CORES" = xyes; then

        AC_MSG_RESULT([$NUM_CORES])

    else

        AC_MSG_RESULT([could not detect number of cores, defaulting to 1])

        AC_MSG_WARN([This will disable all parallelism from build!])

    fi 

])

AC_DEFUN([BPERF_CHECK_MEMORY_SIZE],

[

    AC_MSG_CHECKING([for memory size])

    # Default to 1024 MB

    MEMORY_SIZE=1024

    FOUND_MEM=no

    if test -f /proc/meminfo; then

        # Looks like a Linux (or cygwin) system

        MEMORY_SIZE=`cat /proc/meminfo | grep MemTotal | awk '{print [$]2}'`

        MEMORY_SIZE=`expr $MEMORY_SIZE / 1024`

        FOUND_MEM=yes

    elif test -x /usr/sbin/prtconf; then

        # Looks like a Solaris system

        MEMORY_SIZE=`/usr/sbin/prtconf | grep "Memory size" | awk '{ print [$]3 }'`

        FOUND_MEM=yes

    elif test -x /usr/sbin/system_profiler; then

        # Looks like a MacOSX system

        MEMORY_SIZE=`/usr/sbin/system_profiler -detailLevel full SPHardwareDataType | grep 'Memory' | awk  '{print [$]2}'`

        MEMORY_SIZE=`expr $MEMORY_SIZE \* 1024`

        FOUND_MEM=yes

    elif test "x$OPENJDK_BUILD_OS" = xwindows; then

        # Windows, but without cygwin

        MEMORY_SIZE=`wmic computersystem get totalphysicalmemory -value | grep = | cut -d "=" -f 2-`

        MEMORY_SIZE=`expr $MEMORY_SIZE / 1024 / 1024`

        FOUND_MEM=yes    

    fi

    if test "x$FOUND_MEM" = xyes; then

        AC_MSG_RESULT([$MEMORY_SIZE MB])

    else

        AC_MSG_RESULT([could not detect memory size, defaulting to 1024 MB])

        AC_MSG_WARN([This might seriously impact build performance!])

    fi 

])

AC_DEFUN_ONCE([BPERF_SETUP_BUILD_CORES],

[

  # How many cores do we have on this build system?

  AC_ARG_WITH(num-cores, [AS_HELP_STRING([--with-num-cores],

    [number of cores in the build system, e.g. --with-num-cores=8 @<:@probed@:>@])])

  if test "x$with_num_cores" = x; then

    # The number of cores were not specified, try to probe them.

    BPERF_CHECK_CORES

  else

    NUM_CORES=$with_num_cores

  fi

  AC_SUBST(NUM_CORES)

])

AC_DEFUN_ONCE([BPERF_SETUP_BUILD_MEMORY],

[

  # How much memory do we have on this build system?

  AC_ARG_WITH(memory-size, [AS_HELP_STRING([--with-memory-size],

    [memory (in MB) available in the build system, e.g. --with-memory-size=1024 @<:@probed@:>@])])

  if test "x$with_memory_size" = x; then

    # The memory size was not specified, try to probe it.

    BPERF_CHECK_MEMORY_SIZE

  else

    MEMORY_SIZE=$with_memory_size

  fi

  AC_SUBST(MEMORY_SIZE)

])

AC_DEFUN_ONCE([BPERF_SETUP_BUILD_JOBS],

[

  # Provide a decent default number of parallel jobs for make depending on 

  # number of cores, amount of memory and machine architecture.

  AC_ARG_WITH(jobs, [AS_HELP_STRING([--with-jobs],

    [number of parallel jobs to let make run @<:@calculated based on cores and memory@:>@])])

  if test "x$with_jobs" = x; then

    # Number of jobs was not specified, calculate.

    AC_MSG_CHECKING([for appropriate number of jobs to run in parallel])

    # Approximate memory in GB, rounding up a bit.

    memory_gb=`expr $MEMORY_SIZE / 1100`

    # Pick the lowest of memory in gb and number of cores.

    if test "$memory_gb" -lt "$NUM_CORES"; then

      JOBS="$memory_gb"

    else

      JOBS="$NUM_CORES"

      # On bigger machines, leave some room for other processes to run

      if test "$JOBS" -gt "4"; then

        JOBS=`expr $JOBS '*' 90 / 100`

      fi

    fi

    # Cap number of jobs to 16

    if test "$JOBS" -gt "16"; then

      JOBS=16

    fi

    AC_MSG_RESULT([$JOBS])

  else

    JOBS=$with_jobs

  fi

  AC_SUBST(JOBS)

])

AC_DEFUN([BPERF_SETUP_CCACHE],

[

    AC_ARG_ENABLE([ccache],

	      [AS_HELP_STRING([--disable-ccache],

	      		      [disable using ccache to speed up recompilations @<:@enabled@:>@])],

              [ENABLE_CCACHE=${enable_ccache}], [ENABLE_CCACHE=yes])

    if test "x$ENABLE_CCACHE" = xyes; then

        AC_PATH_PROG(CCACHE, ccache)

    else

        AC_MSG_CHECKING([for ccache])

        AC_MSG_RESULT([explicitly disabled])    

        CCACHE=

    fi    

    AC_SUBST(CCACHE)

    AC_ARG_WITH([ccache-dir],

	      [AS_HELP_STRING([--with-ccache-dir],

	      		      [where to store ccache files @<:@~/.ccache@:>@])])

    if test "x$with_ccache_dir" != x; then

        # When using a non home ccache directory, assume the use is to share ccache files

        # with other users. Thus change the umask.

        SET_CCACHE_DIR="CCACHE_DIR=$with_ccache_dir CCACHE_UMASK=002"

    fi

    CCACHE_FOUND=""

    if test "x$CCACHE" != x; then

        BPERF_SETUP_CCACHE_USAGE

    fi    

])

AC_DEFUN([BPERF_SETUP_CCACHE_USAGE],

[

    if test "x$CCACHE" != x; then

        CCACHE_FOUND="true"

        # Only use ccache if it is 3.1.4 or later, which supports

        # precompiled headers.

        AC_MSG_CHECKING([if ccache supports precompiled headers])

        HAS_GOOD_CCACHE=`($CCACHE --version | head -n 1 | grep -E 3.1.@<:@456789@:>@) 2> /dev/null`

        if test "x$HAS_GOOD_CCACHE" = x; then

            AC_MSG_RESULT([no, disabling ccache])

            CCACHE=

        else

            AC_MSG_RESULT([yes])

            AC_MSG_CHECKING([if C-compiler supports ccache precompiled headers])

            PUSHED_FLAGS="$CXXFLAGS"

            CXXFLAGS="-fpch-preprocess $CXXFLAGS"

            AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], [CC_KNOWS_CCACHE_TRICK=yes], [CC_KNOWS_CCACHE_TRICK=no])

            CXXFLAGS="$PUSHED_FLAGS"

            if test "x$CC_KNOWS_CCACHE_TRICK" = xyes; then

                AC_MSG_RESULT([yes])

            else

                AC_MSG_RESULT([no, disabling ccaching of precompiled headers])

                CCACHE=

            fi

        fi

    fi

    if test "x$CCACHE" != x; then

        CCACHE_SLOPPINESS=time_macros

        CCACHE="CCACHE_COMPRESS=1 $SET_CCACHE_DIR CCACHE_SLOPPINESS=$CCACHE_SLOPPINESS $CCACHE"

        CCACHE_FLAGS=-fpch-preprocess

        if test "x$SET_CCACHE_DIR" != x; then

            mkdir -p $CCACHE_DIR > /dev/null 2>&1

	    chmod a+rwxs $CCACHE_DIR > /dev/null 2>&1

        fi

    fi

])

AC_DEFUN_ONCE([BPERF_SETUP_PRECOMPILED_HEADERS],

[

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

#

# Can the C/C++ compiler use precompiled headers?

#

AC_ARG_ENABLE([precompiled-headers], [AS_HELP_STRING([--disable-precompiled-headers],

	[disable using precompiled headers when compiling C++ @<:@enabled@:>@])],

    [ENABLE_PRECOMPH=${enable_precompiled_headers}], [ENABLE_PRECOMPH=yes])

USE_PRECOMPILED_HEADER=1

if test "x$ENABLE_PRECOMPH" = xno; then

    USE_PRECOMPILED_HEADER=0

fi

if test "x$ENABLE_PRECOMPH" = xyes; then

    # Check that the compiler actually supports precomp headers.

    if test "x$GCC" = xyes; then

         AC_MSG_CHECKING([that precompiled headers work])

         echo "int alfa();" > conftest.h

         $CXX -x c++-header conftest.h -o conftest.hpp.gch 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD

         if test ! -f conftest.hpp.gch; then

             USE_PRECOMPILED_HEADER=0

             AC_MSG_RESULT([no])        

         else

             AC_MSG_RESULT([yes])

         fi

         rm -f conftest.h conftest.hpp.gch

    fi

fi

AC_SUBST(USE_PRECOMPILED_HEADER)

])

AC_DEFUN_ONCE([BPERF_SETUP_SMART_JAVAC],

[

AC_ARG_WITH(sjavac-server-java, [AS_HELP_STRING([--with-sjavac-server-java],

	[use this java binary for running the sjavac background server @<:@Boot JDK java@:>@])])

if test "x$with_sjavac_server_java" != x; then

    SJAVAC_SERVER_JAVA="$with_sjavac_server_java"

    FOUND_VERSION=`$SJAVAC_SERVER_JAVA -version 2>&1 | grep " version \""`

    if test "x$FOUND_VERSION" = x; then

        AC_MSG_ERROR([Could not execute server java: $SJAVAC_SERVER_JAVA])

    fi

else

    SJAVAC_SERVER_JAVA=""

    # Hotspot specific options.

    ADD_JVM_ARG_IF_OK([-verbosegc],SJAVAC_SERVER_JAVA,[$JAVA])

    # JRockit specific options.

    ADD_JVM_ARG_IF_OK([-Xverbose:gc],SJAVAC_SERVER_JAVA,[$JAVA])

    SJAVAC_SERVER_JAVA="$JAVA $SJAVAC_SERVER_JAVA"

fi                    

AC_SUBST(SJAVAC_SERVER_JAVA)

AC_ARG_WITH(sjavac-server-cores, [AS_HELP_STRING([--with-sjavac-server-cores],

	[use at most this number of concurrent threads on the sjavac server @<:@probed@:>@])])

if test "x$with_sjavac_server_cores" != x; then

    SJAVAC_SERVER_CORES="$with_sjavac_server_cores"

else

    if test "$NUM_CORES" -gt 16; then

        # We set this arbitrary limit because we want to limit the heap

        # size of the javac server.

        # In the future we will make the javac compilers in the server

        # share more and more state, thus enabling us to use more and

        # more concurrent threads in the server.

        SJAVAC_SERVER_CORES="16"

    else

        SJAVAC_SERVER_CORES="$NUM_CORES"

    fi

    if test "$MEMORY_SIZE" -gt "17000"; then

        MAX_HEAP_MEM=10000

        ADD_JVM_ARG_IF_OK([-d64],SJAVAC_SERVER_JAVA,[$SJAVAC_SERVER_JAVA])

        ADD_JVM_ARG_IF_OK([-Xms10G -Xmx10G],SJAVAC_SERVER_JAVA,[$SJAVAC_SERVER_JAVA])

    elif test "$MEMORY_SIZE" -gt "10000"; then

        MAX_HEAP_MEM=6000

        ADD_JVM_ARG_IF_OK([-d64],SJAVAC_SERVER_JAVA,[$SJAVAC_SERVER_JAVA])

        ADD_JVM_ARG_IF_OK([-Xms6G -Xmx6G],SJAVAC_SERVER_JAVA,[$SJAVAC_SERVER_JAVA])

    elif test "$MEMORY_SIZE" -gt "5000"; then

        MAX_HEAP_MEM=3000

        ADD_JVM_ARG_IF_OK([-d64],SJAVAC_SERVER_JAVA,[$SJAVAC_SERVER_JAVA])

        ADD_JVM_ARG_IF_OK([-Xms1G -Xmx3G],SJAVAC_SERVER_JAVA,[$SJAVAC_SERVER_JAVA])

    elif test "$MEMORY_SIZE" -gt "3800"; then

        MAX_HEAP_MEM=2500

        ADD_JVM_ARG_IF_OK([-Xms1G -Xmx2500M],SJAVAC_SERVER_JAVA,[$SJAVAC_SERVER_JAVA])

    elif test "$MEMORY_SIZE" -gt "1900"; then

        MAX_HEAP_MEM=1200

        ADD_JVM_ARG_IF_OK([-Xms700M -Xmx1400M],SJAVAC_SERVER_JAVA,[$SJAVAC_SERVER_JAVA])

    elif test "$MEMORY_SIZE" -gt "1000"; then

        MAX_HEAP_MEM=900

        ADD_JVM_ARG_IF_OK([-Xms400M -Xmx1100M],SJAVAC_SERVER_JAVA,[$SJAVAC_SERVER_JAVA])

    else

        MAX_HEAP_MEM=512

        ADD_JVM_ARG_IF_OK([-Xms256M -Xmx512M],SJAVAC_SERVER_JAVA,[$SJAVAC_SERVER_JAVA])

    fi

    ADD_JVM_ARG_IF_OK([-XX:PermSize=32m],SJAVAC_SERVER_JAVA,[$SJAVAC_SERVER_JAVA])

    ADD_JVM_ARG_IF_OK([-XX:MaxPermSize=160m],SJAVAC_SERVER_JAVA,[$SJAVAC_SERVER_JAVA])

    ADD_JVM_ARG_IF_OK([-XX:ThreadStackSize=$STACK_SIZE],SJAVAC_SERVER_JAVA,[$SJAVAC_SERVER_JAVA])

    MAX_COMPILERS_IN_HEAP=`expr $MAX_HEAP_MEM / 501`

    if test "$SJAVAC_SERVER_CORES" -gt "$MAX_COMPILERS_IN_HEAP"; then

        AC_MSG_CHECKING([if number of server cores must be reduced])

        SJAVAC_SERVER_CORES="$MAX_COMPILERS_IN_HEAP"

        AC_MSG_RESULT([yes, to $SJAVAC_SERVER_CORES with max heap size $MAX_HEAP_MEM MB])

    fi

fi                    

AC_SUBST(SJAVAC_SERVER_CORES)

AC_MSG_CHECKING([whether to use sjavac])

AC_ARG_ENABLE([sjavac], [AS_HELP_STRING([--enable-sjavac],

	[use sjavac to do fast incremental compiles @<:@disabled@:>@])],

	[ENABLE_SJAVAC="${enableval}"], [ENABLE_SJAVAC='no'])

AC_MSG_RESULT([$ENABLE_SJAVAC])

AC_SUBST(ENABLE_SJAVAC)

if test "x$ENABLE_SJAVAC" = xyes; then

    SJAVAC_SERVER_DIR="$OUTPUT_ROOT/javacservers"

else

    SJAVAC_SERVER_DIR=

fi

AC_SUBST(SJAVAC_SERVER_DIR)

])