#

# 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 "x$OPENJDK_BUILD_OS" = xaix ; then

    NUM_CORES=`/usr/sbin/prtconf | grep "^Number Of Processors" | awk '{ print [$]4 }'`

    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 or AIX system

    MEMORY_SIZE=`/usr/sbin/prtconf | grep "^Memory [[Ss]]ize" | 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 $MEMORY_SIZE 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.

    memory_gb=`expr $MEMORY_SIZE / 1024`

    # 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

    if test "$JOBS" -eq "0"; then

      JOBS=1

    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([--enable-ccache],

      [enable using ccache to speed up recompilations @<:@disabled@:>@])])

  CCACHE=

  AC_MSG_CHECKING([is ccache enabled])

  ENABLE_CCACHE=$enable_ccache

  if test "x$enable_ccache" = xyes; then

    AC_MSG_RESULT([yes])

    OLD_PATH="$PATH"

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

      PATH=$TOOLCHAIN_PATH:$PATH

    fi

    BASIC_REQUIRE_PROGS(CCACHE, ccache)

    CCACHE_STATUS="enabled"

    PATH="$OLD_PATH"

  elif test "x$enable_ccache" = xno; then

    AC_MSG_RESULT([no, explicitly disabled])

  elif test "x$enable_ccache" = x; then

    AC_MSG_RESULT([no])

  else

    AC_MSG_RESULT([unknown])

    AC_MSG_ERROR([--enable-ccache does not accept any parameters])

  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"

    if test "x$CCACHE" = x; then

      AC_MSG_WARN([--with-ccache-dir has no meaning when ccache is not enabled])

    fi

  fi

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

    BPERF_SETUP_CCACHE_USAGE

  fi

])

AC_DEFUN([BPERF_SETUP_CCACHE_USAGE],

[

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

    # 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=

      CCACHE_STATUS="disabled"

    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=

        CCACHE_STATUS="disabled"

      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$TOOLCHAIN_TYPE" = xgcc; 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="$JAVA"

  fi

  AC_SUBST(SJAVAC_SERVER_JAVA)

  if test "$MEMORY_SIZE" -gt "3000"; then

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

    if test "$JVM_ARG_OK" = true; then

      JVM_64BIT=true

      JVM_ARG_OK=false

    fi

  fi

  MX_VALUE=`expr $MEMORY_SIZE / 2`

  if test "$JVM_64BIT" = true; then

    # Set ms lower than mx since more than one instance of the server might

    # get launched at the same time before they figure out which instance won.

    MS_VALUE=512

    if test "$MX_VALUE" -gt "2048"; then

      MX_VALUE=2048

    fi

  else

    MS_VALUE=256

    if test "$MX_VALUE" -gt "1500"; then

      MX_VALUE=1500

    fi

  fi

  if test "$MX_VALUE" -lt "512"; then

    MX_VALUE=512

  fi

  ADD_JVM_ARG_IF_OK([-Xms${MS_VALUE}M -Xmx${MX_VALUE}M],SJAVAC_SERVER_JAVA_FLAGS,[$SJAVAC_SERVER_JAVA])

  AC_SUBST(SJAVAC_SERVER_JAVA_FLAGS)

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

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

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

  if test "x$JVM_ARG_OK" = "xfalse"; then

    AC_MSG_WARN([Could not set -Xms${MS_VALUE}M -Xmx${MX_VALUE}M, disabling sjavac])

    ENABLE_SJAVAC=no;

  fi

  AC_MSG_CHECKING([whether to use sjavac])

  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)

])