#

# Copyright (c) 2011, 2019, 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=`/usr/sbin/psrinfo -v | grep -c on-line`

    FOUND_CORES=yes

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

    # Looks like a MacOSX system

    NUM_CORES=`/usr/sbin/sysctl -n hw.ncpu`

    FOUND_CORES=yes

  elif test "x$OPENJDK_BUILD_OS" = xaix ; then

    NUM_LCPU=`lparstat -m 2> /dev/null | $GREP -o "lcpu=[[0-9]]*" | $CUT -d "=" -f 2`

    if test -n "$NUM_LCPU"; then

      NUM_CORES=$NUM_LCPU

      FOUND_CORES=yes

    fi

  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 2> /dev/null | grep "^Memory [[Ss]]ize" | awk '{ print [$]3 }'`

    FOUND_MEM=yes

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

    # Looks like a MacOSX system

    MEMORY_SIZE=`/usr/sbin/sysctl -n hw.memsize`

    MEMORY_SIZE=`expr $MEMORY_SIZE / 1024 / 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"

    fi

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

      JOBS=1

    fi

    AC_MSG_RESULT([$JOBS])

  else

    JOBS=$with_jobs

  fi

  AC_SUBST(JOBS)

])

AC_DEFUN_ONCE([BPERF_SETUP_TEST_JOBS],

[

  # The number of test jobs will be chosen automatically if TEST_JOBS is 0

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

      [number of parallel tests jobs to run @<:@based on build jobs@:>@])])

  if test "x$with_test_jobs" = x; then

      TEST_JOBS=0

  else

      TEST_JOBS=$with_test_jobs

  fi

  AC_SUBST(TEST_JOBS)

])

AC_DEFUN([BPERF_SETUP_CCACHE],

[

  AC_ARG_ENABLE([ccache],

      [AS_HELP_STRING([--enable-ccache],

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

  CCACHE_STATUS=

  AC_MSG_CHECKING([is ccache enabled])

  if test "x$enable_ccache" = xyes; then

    if test "x$TOOLCHAIN_TYPE" = "xgcc" -o "x$TOOLCHAIN_TYPE" = "xclang"; 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)

      PATH="$OLD_PATH"

      CCACHE_VERSION=[`$CCACHE --version | head -n1 | $SED 's/[A-Za-z ]*//'`]

      CCACHE_STATUS="Active ($CCACHE_VERSION)"

    else

      AC_MSG_RESULT([no])

      AC_MSG_WARN([ccache is not supported with toolchain type $TOOLCHAIN_TYPE])

    fi

  elif test "x$enable_ccache" = xno; then

    AC_MSG_RESULT([no, explicitly disabled])

    CCACHE_STATUS="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

    if test "x$OPENJDK_BUILD_OS" = "xmacosx"; then

      HAS_BAD_CCACHE=[`$ECHO $CCACHE_VERSION | \

          $GREP -e '^1\.' -e '^2\.' -e '^3\.0\.' -e '^3\.1\.'`]

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

        AC_MSG_ERROR([On macosx, ccache 3.2 or later is required, found $CCACHE_VERSION])

      fi

    fi

    if test "x$USE_PRECOMPILED_HEADER" = "xtrue"; then

      HAS_BAD_CCACHE=[`$ECHO $CCACHE_VERSION | \

          $GREP -e '^1.*' -e '^2.*' -e '^3\.0.*' -e '^3\.1\.[0123]$'`]

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

        AC_MSG_ERROR([Precompiled headers requires ccache 3.1.4 or later, found $CCACHE_VERSION])

      fi

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

      CCACHE_PRECOMP_FLAG="-fpch-preprocess"

      PUSHED_FLAGS="$CXXFLAGS"

      CXXFLAGS="$CCACHE_PRECOMP_FLAG $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])

        CFLAGS_CCACHE="$CCACHE_PRECOMP_FLAG"

        AC_SUBST(CFLAGS_CCACHE)

        CCACHE_SLOPPINESS=pch_defines,time_macros

      else

        AC_MSG_RESULT([no])

        AC_MSG_ERROR([Cannot use ccache with precompiled headers without compiler support for $CCACHE_PRECOMP_FLAG])

      fi

    fi

    CCACHE="CCACHE_COMPRESS=1 $SET_CCACHE_DIR \

        CCACHE_SLOPPINESS=$CCACHE_SLOPPINESS CCACHE_BASEDIR=$TOPDIR $CCACHE"

    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

])

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

#

# Runs icecc-create-env once and prints the error if it fails

#

# $1: arguments to icecc-create-env

# $2: log file

#

AC_DEFUN([BPERF_RUN_ICECC_CREATE_ENV],

[

  ( cd ${CONFIGURESUPPORT_OUTPUTDIR}/icecc \

      && ${ICECC_CREATE_ENV} $1 > $2 2>&1 )

  if test "$?" != "0"; then

    AC_MSG_NOTICE([icecc-create-env output:])

    cat $2

    AC_MSG_ERROR([Failed to create icecc compiler environment])

  fi

])

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

#

# Optionally enable distributed compilation of native code using icecc/icecream

#

AC_DEFUN([BPERF_SETUP_ICECC],

[

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

      [enable distribted compilation of native code using icecc/icecream @<:@disabled@:>@])])

  if test "x${enable_icecc}" = "xyes"; then

    BASIC_REQUIRE_PROGS(ICECC_CMD, icecc)

    old_path="$PATH"

    # Look for icecc-create-env in some known places

    PATH="$PATH:/usr/lib/icecc:/usr/lib64/icecc"

    BASIC_REQUIRE_PROGS(ICECC_CREATE_ENV, icecc-create-env)

    # Use icecc-create-env to create a minimal compilation environment that can

    # be sent to the other hosts in the icecream cluster.

    icecc_create_env_log="${CONFIGURESUPPORT_OUTPUTDIR}/icecc/icecc_create_env.log"

    ${MKDIR} -p ${CONFIGURESUPPORT_OUTPUTDIR}/icecc

    # Older versions of icecc does not have the --gcc parameter

    if ${ICECC_CREATE_ENV} | $GREP -q -e --gcc; then

      icecc_gcc_arg="--gcc"

    fi

    if test "x${TOOLCHAIN_TYPE}" = "xgcc"; then

      BPERF_RUN_ICECC_CREATE_ENV([${icecc_gcc_arg} ${CC} ${CXX}], \

          ${icecc_create_env_log})

    elif test "x$TOOLCHAIN_TYPE" = "xclang"; then

      # For clang, the icecc compilerwrapper is needed. It usually resides next

      # to icecc-create-env.

      BASIC_REQUIRE_PROGS(ICECC_WRAPPER, compilerwrapper)

      BPERF_RUN_ICECC_CREATE_ENV([--clang ${CC} ${ICECC_WRAPPER}], ${icecc_create_env_log})

    else

      AC_MSG_ERROR([Can only create icecc compiler packages for toolchain types gcc and clang])

    fi

    PATH="$old_path"

    # The bundle with the compiler gets a name based on checksums. Parse log file

    # to find it.

    ICECC_ENV_BUNDLE_BASENAME="`${SED} -n '/^creating/s/creating //p' ${icecc_create_env_log}`"

    ICECC_ENV_BUNDLE="${CONFIGURESUPPORT_OUTPUTDIR}/icecc/${ICECC_ENV_BUNDLE_BASENAME}"

    if test ! -f ${ICECC_ENV_BUNDLE}; then

      AC_MSG_ERROR([icecc-create-env did not produce an environment ${ICECC_ENV_BUNDLE}])

    fi

    AC_MSG_CHECKING([for icecc build environment for target compiler])

    AC_MSG_RESULT([${ICECC_ENV_BUNDLE}])

    ICECC="ICECC_VERSION=${ICECC_ENV_BUNDLE} ICECC_CC=${CC} ICECC_CXX=${CXX} ${ICECC_CMD}"

    if test "x${COMPILE_TYPE}" = "xcross"; then

      # If cross compiling, create a separate env package for the build compiler

      # Assume "gcc" or "cc" is gcc and "clang" is clang. Otherwise bail.

      icecc_create_env_log_build="${CONFIGURESUPPORT_OUTPUTDIR}/icecc/icecc_create_env_build.log"

      if test "x${BUILD_CC##*/}" = "xgcc" ||  test "x${BUILD_CC##*/}" = "xcc"; then

        BPERF_RUN_ICECC_CREATE_ENV([${icecc_gcc_arg} ${BUILD_CC} ${BUILD_CXX}], \

            ${icecc_create_env_log_build})

      elif test "x${BUILD_CC##*/}" = "xclang"; then

        BPERF_RUN_ICECC_CREATE_ENV([--clang ${BUILD_CC} ${ICECC_WRAPPER}], ${icecc_create_env_log_build})

      else

        AC_MSG_ERROR([Cannot create icecc compiler package for ${BUILD_CC}])

      fi

      ICECC_ENV_BUNDLE_BASENAME="`${SED} -n '/^creating/s/creating //p' ${icecc_create_env_log_build}`"

      ICECC_ENV_BUNDLE="${CONFIGURESUPPORT_OUTPUTDIR}/icecc/${ICECC_ENV_BUNDLE_BASENAME}"

      if test ! -f ${ICECC_ENV_BUNDLE}; then

        AC_MSG_ERROR([icecc-create-env did not produce an environment ${ICECC_ENV_BUNDLE}])

      fi

      AC_MSG_CHECKING([for icecc build environment for build compiler])

      AC_MSG_RESULT([${ICECC_ENV_BUNDLE}])

      BUILD_ICECC="ICECC_VERSION=${ICECC_ENV_BUNDLE} ICECC_CC=${BUILD_CC} \

          ICECC_CXX=${BUILD_CXX} ${ICECC_CMD}"

    else

      BUILD_ICECC="${ICECC}"

    fi

    AC_SUBST(ICECC)

    AC_SUBST(BUILD_ICECC)

  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=true

  AC_MSG_CHECKING([If precompiled header is enabled])

  if test "x$ENABLE_PRECOMPH" = xno; then

    AC_MSG_RESULT([no, forced])

    USE_PRECOMPILED_HEADER=false

  elif test "x$ICECC" != "x"; then

    AC_MSG_RESULT([no, does not work effectively with icecc])

    USE_PRECOMPILED_HEADER=false

  elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then

    AC_MSG_RESULT([no, does not work with Solaris Studio])

    USE_PRECOMPILED_HEADER=false

  elif test "x$TOOLCHAIN_TYPE" = xxlc; then

    AC_MSG_RESULT([no, does not work with xlc])

    USE_PRECOMPILED_HEADER=false

  else

    AC_MSG_RESULT([yes])

  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=false

        AC_MSG_RESULT([no])

      else

        AC_MSG_RESULT([yes])

      fi

      $RM 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

    if "$JAVA" -version 2>&1 | $GREP -q "64-Bit"; then

      JVM_64BIT=true

    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)

  AC_ARG_ENABLE([javac-server], [AS_HELP_STRING([--disable-javac-server],

      [disable javac server @<:@enabled@:>@])],

      [ENABLE_JAVAC_SERVER="${enableval}"], [ENABLE_JAVAC_SERVER="yes"])

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

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

    ENABLE_JAVAC_SERVER="no"

  fi

  AC_MSG_CHECKING([whether to use javac server])

  AC_MSG_RESULT([$ENABLE_JAVAC_SERVER])

  AC_SUBST(ENABLE_JAVAC_SERVER)

  if test "x$ENABLE_JAVAC_SERVER" = "xyes" || test "x$ENABLE_SJAVAC" = "xyes"; then

    # When using a server javac, the small client instances do not need much

    # resources.

    JAVA_FLAGS_JAVAC="$JAVA_FLAGS_SMALL"

  fi

])