|
0
|
1 #! /bin/sh
|
|
|
2 #
|
|
196
|
3 # Copyright 1999-2008 Sun Microsystems, Inc. All Rights Reserved.
|
|
0
|
4 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
|
5 #
|
|
|
6 # This code is free software; you can redistribute it and/or modify it
|
|
|
7 # under the terms of the GNU General Public License version 2 only, as
|
|
|
8 # published by the Free Software Foundation.
|
|
|
9 #
|
|
|
10 # This code is distributed in the hope that it will be useful, but WITHOUT
|
|
|
11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
|
13 # version 2 for more details (a copy is included in the LICENSE file that
|
|
|
14 # accompanied this code).
|
|
|
15 #
|
|
|
16 # You should have received a copy of the GNU General Public License version
|
|
|
17 # 2 along with this work; if not, write to the Free Software Foundation,
|
|
|
18 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
19 #
|
|
|
20 # Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
|
21 # CA 95054 USA or visit www.sun.com if you need additional information or
|
|
|
22 # have any questions.
|
|
|
23 #
|
|
|
24 #
|
|
|
25
|
|
|
26 # This script is used only from top.make.
|
|
|
27 # The macro $(MFLAGS-adjusted) calls this script to
|
|
|
28 # adjust the "-j" arguments to take into account
|
|
|
29 # the HOTSPOT_BUILD_JOBS variable. The default
|
|
|
30 # handling of the "-j" argument by gnumake does
|
|
|
31 # not meet our needs, so we must adjust it ourselves.
|
|
|
32
|
|
|
33 # This argument adjustment applies to two recursive
|
|
|
34 # calls to "$(MAKE) $(MFLAGS-adjusted)" in top.make.
|
|
|
35 # One invokes adlc.make, and the other invokes vm.make.
|
|
|
36 # The adjustment propagates the desired concurrency
|
|
|
37 # level down to the sub-make (of the adlc or vm).
|
|
|
38 # The default behavior of gnumake is to run all
|
|
|
39 # sub-makes without concurrency ("-j1").
|
|
|
40
|
|
|
41 # Also, we use a make variable rather than an explicit
|
|
|
42 # "-j<N>" argument to control this setting, so that
|
|
|
43 # the concurrency setting (which must be tuned separately
|
|
|
44 # for each MP system) can be set via an environment variable.
|
|
|
45 # The recommended setting is 1.5x to 2x the number of available
|
|
|
46 # CPUs on the MP system, which is large enough to keep the CPUs
|
|
|
47 # busy (even though some jobs may be I/O bound) but not too large,
|
|
|
48 # we may presume, to overflow the system's swap space.
|
|
|
49
|
|
|
50 set -eu
|
|
|
51
|
|
|
52 default_build_jobs=4
|
|
|
53
|
|
|
54 case $# in
|
|
|
55 [12]) true;;
|
|
|
56 *) >&2 echo "Usage: $0 ${MFLAGS} ${HOTSPOT_BUILD_JOBS}"; exit 2;;
|
|
|
57 esac
|
|
|
58
|
|
|
59 MFLAGS=$1
|
|
|
60 HOTSPOT_BUILD_JOBS=${2-}
|
|
|
61
|
|
|
62 # Normalize any -jN argument to the form " -j${HBJ}"
|
|
|
63 MFLAGS=`
|
|
|
64 echo "$MFLAGS" \
|
|
|
65 | sed '
|
|
|
66 s/^-/ -/
|
|
|
67 s/ -\([^ ][^ ]*\)j/ -\1 -j/
|
|
|
68 s/ -j[0-9][0-9]*/ -j/
|
|
|
69 s/ -j\([^ ]\)/ -j -\1/
|
|
|
70 s/ -j/ -j'${HOTSPOT_BUILD_JOBS:-${default_build_jobs}}'/
|
|
|
71 ' `
|
|
|
72
|
|
|
73 case ${HOTSPOT_BUILD_JOBS} in \
|
|
|
74
|
|
|
75 '') case ${MFLAGS} in
|
|
|
76 *\ -j*)
|
|
|
77 >&2 echo "# Note: -jN is ineffective for setting parallelism in this makefile."
|
|
|
78 >&2 echo "# please set HOTSPOT_BUILD_JOBS=${default_build_jobs} in the command line or environment."
|
|
|
79 esac;;
|
|
|
80
|
|
|
81 ?*) case ${MFLAGS} in
|
|
|
82 *\ -j*) true;;
|
|
|
83 *) MFLAGS="-j${HOTSPOT_BUILD_JOBS} ${MFLAGS}";;
|
|
|
84 esac;;
|
|
|
85 esac
|
|
|
86
|
|
|
87 echo "${MFLAGS}"
|
