Mercurial > hg > graal-compiler
view make/bsd/makefiles/adjust-mflags.sh @ 12498:d00c31d8394f
Flush deferred barrier when Graal and G1 are used
author | Christos Kotselidis <christos.kotselidis@oracle.com> |
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date | Mon, 21 Oct 2013 17:21:26 +0200 |
parents | f08d439fab8c |
children | e8d4d0db1f06 |
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#! /bin/sh # # Copyright (c) 1999, 2008, 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 script is used only from top.make. # The macro $(MFLAGS-adjusted) calls this script to # adjust the "-j" arguments to take into account # the HOTSPOT_BUILD_JOBS variable. The default # handling of the "-j" argument by gnumake does # not meet our needs, so we must adjust it ourselves. # This argument adjustment applies to two recursive # calls to "$(MAKE) $(MFLAGS-adjusted)" in top.make. # One invokes adlc.make, and the other invokes vm.make. # The adjustment propagates the desired concurrency # level down to the sub-make (of the adlc or vm). # The default behavior of gnumake is to run all # sub-makes without concurrency ("-j1"). # Also, we use a make variable rather than an explicit # "-j<N>" argument to control this setting, so that # the concurrency setting (which must be tuned separately # for each MP system) can be set via an environment variable. # The recommended setting is 1.5x to 2x the number of available # CPUs on the MP system, which is large enough to keep the CPUs # busy (even though some jobs may be I/O bound) but not too large, # we may presume, to overflow the system's swap space. set -eu default_build_jobs=4 case $# in [12]) true;; *) >&2 echo "Usage: $0 ${MFLAGS} ${HOTSPOT_BUILD_JOBS}"; exit 2;; esac MFLAGS=$1 HOTSPOT_BUILD_JOBS=${2-} # Normalize any -jN argument to the form " -j${HBJ}" MFLAGS=` echo "$MFLAGS" \ | sed ' s/^-/ -/ s/ -\([^ ][^ ]*\)j/ -\1 -j/ s/ -j[0-9][0-9]*/ -j/ s/ -j\([^ ]\)/ -j -\1/ s/ -j/ -j'${HOTSPOT_BUILD_JOBS:-${default_build_jobs}}'/ ' ` case ${HOTSPOT_BUILD_JOBS} in \ '') case ${MFLAGS} in *\ -j*) >&2 echo "# Note: -jN is ineffective for setting parallelism in this makefile." >&2 echo "# please set HOTSPOT_BUILD_JOBS=${default_build_jobs} in the command line or environment." esac;; ?*) case ${MFLAGS} in *\ -j*) true;; *) MFLAGS="-j${HOTSPOT_BUILD_JOBS} ${MFLAGS}";; esac;; esac echo "${MFLAGS}"