Mercurial > hg > truffle
annotate src/share/tools/MakeDeps/MakeDeps.java @ 1716:be3f9c242c9d
6948538: CMS: BOT walkers can fall into object allocation and initialization cracks
Summary: GC workers now recognize an intermediate transient state of blocks which are allocated but have not yet completed initialization. blk_start() calls do not attempt to determine the size of a block in the transient state, rather waiting for the block to become initialized so that it is safe to query its size. Audited and ensured the order of initialization of object fields (klass, free bit and size) to respect block state transition protocol. Also included some new assertion checking code enabled in debug mode.
Reviewed-by: chrisphi, johnc, poonam
| author | ysr |
|---|---|
| date | Mon, 16 Aug 2010 15:58:42 -0700 |
| parents | c18cbe5936b8 |
| children | 2d26b0046e0d |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 1999, 2001, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 // This program reads an include file database. | |
| 26 // The database should cover each self .c and .h file, | |
| 27 // but not files in /usr/include | |
| 28 // The database consists of pairs of nonblank words, where the first word is | |
| 29 // the filename that needs to include the file named by the second word. | |
| 30 // For each .c file, this program generates a fooIncludes.h file that | |
| 31 // the .c file may include to include all the needed files in the right order. | |
| 32 // It also generates a foo.dep file to include in the makefile. | |
| 33 // Finally it detects cycles, and can work with two files, an old and a new one. | |
| 34 // To incrementally write out only needed files after a small change. | |
| 35 // | |
| 36 // Based on a suggestion by Roland Conybeare, algorithm suggested by Craig | |
| 37 // Chambers, written by David Ungar, 3/1/89. | |
| 38 // Added PREFIX, {DEP/INC}_DIR, smaller dep output 10/92 -Urs | |
| 39 | |
| 40 // Add something for precompiled headers | |
| 41 | |
| 42 // To handle different platforms, I am introducing a platform file. | |
| 43 // The platform file contains lines like: | |
| 44 // os = svr4 | |
| 45 // | |
| 46 // Then, when processing the includeDB file, a token such as <os> | |
| 47 // gets replaced by svr4. -- dmu 3/25/97 | |
| 48 | |
| 49 // Modified to centralize Dependencies to speed up make -- dmu 5/97 | |
| 50 | |
| 51 public class MakeDeps { | |
| 52 | |
| 53 public static void usage() { | |
| 54 System.out.println("usage:"); | |
| 55 System.out.println("\tmakeDeps platform-name platform-file database-file [MakeDeps args] [platform args]"); | |
| 56 System.out.println("\tmakeDeps diffs platform-name old-platform-file old-database-file new-platform-file new-database-file [MakeDeps args] [platform args]"); | |
| 57 System.out.println("where platform-name is the name of a platform MakeDeps supports"); | |
| 58 System.out.println("(currently \"WinGammaPlatform\" or \"UnixPlatform\")"); | |
| 59 System.out.println("MakeDeps options:"); | |
| 60 System.out.println(" -firstFile [filename]: Specify the first file in link order (i.e.,"); | |
| 61 System.out.println(" to have a well-known function at the start of the output file)"); | |
| 62 System.out.println(" -lastFile [filename]: Specify the last file in link order (i.e.,"); | |
| 63 System.out.println(" to have a well-known function at the end of the output file)"); | |
| 64 System.err.println("WinGammaPlatform platform-specific options:"); | |
| 65 System.err.println(" -sourceBase <path to directory (workspace) " + | |
| 66 "containing source files; no trailing slash>"); | |
| 67 System.err.println(" -dspFileName <full pathname to which .dsp file " + | |
| 68 "will be written; all parent directories must " + | |
| 69 "already exist>"); | |
| 70 System.err.println(" -envVar <environment variable to be inserted " + | |
| 71 "into .dsp file, substituting for path given in " + | |
| 72 "-sourceBase. Example: HotSpotWorkSpace>"); | |
| 73 System.err.println(" -dllLoc <path to directory in which to put " + | |
| 74 "jvm.dll and jvm_g.dll; no trailing slash>"); | |
| 75 System.err.println(" If any of the above are specified, "+ | |
| 76 "they must all be."); | |
| 77 System.err.println(" Additional, optional arguments, which can be " + | |
| 78 "specified multiple times:"); | |
| 79 System.err.println(" -absoluteInclude <string containing absolute " + | |
| 80 "path to include directory>"); | |
| 81 System.err.println(" -relativeInclude <string containing include " + | |
| 82 "directory relative to -envVar>"); | |
| 83 System.err.println(" -define <preprocessor flag to be #defined " + | |
| 84 "(note: doesn't yet support " + | |
| 85 "#define (flag) (value))>"); | |
| 86 System.err.println(" -perFileLine <file> <line>"); | |
| 87 System.err.println(" -conditionalPerFileLine <file> <line for " + | |
| 88 "release build> <line for debug build>"); | |
| 89 System.err.println(" (NOTE: To work around a bug in nmake, where " + | |
| 90 "you can't have a '#' character in a quoted " + | |
| 91 "string, all of the lines outputted have \"#\"" + | |
| 92 "prepended)"); | |
| 93 System.err.println(" -startAt <subdir of sourceBase>"); | |
| 94 System.err.println(" -ignoreFile <file which won't be able to be " + | |
| 95 "found in the sourceBase because it's generated " + | |
| 96 "later>"); | |
| 97 System.err.println(" -additionalFile <file not in database but " + | |
| 98 "which should show up in .dsp file, like " + | |
| 99 "includeDB_core>"); | |
| 100 System.err.println(" -additionalGeneratedFile <environment variable of " + | |
| 101 "generated file's location> <relative path to " + | |
| 102 "directory containing file; no trailing slash> " + | |
| 103 "<name of file generated later in the build process>"); | |
| 104 System.err.println(" -prelink <build> <desc> <cmds>:"); | |
| 105 System.err.println(" Generate a set of prelink commands for the given BUILD"); | |
| 106 System.err.println(" (\"Debug\" or \"Release\"). The prelink description and commands"); | |
| 107 System.err.println(" are both quoted strings."); | |
| 108 System.err.println(" Default includes: \".\""); | |
| 109 System.err.println(" Default defines: WIN32, _WINDOWS, \"HOTSPOT_BUILD_USER=$(USERNAME)\""); | |
| 110 } | |
| 111 | |
| 112 public static void main(String[] args) { | |
| 113 try { | |
| 114 if (args.length < 3) { | |
| 115 usage(); | |
| 116 System.exit(1); | |
| 117 } | |
| 118 | |
| 119 int argc = 0; | |
| 120 boolean diffMode = false; | |
| 121 if (args[argc].equals("diffs")) { | |
| 122 diffMode = true; | |
| 123 ++argc; | |
| 124 } | |
| 125 | |
| 126 String platformName = args[argc++]; | |
| 127 Class platformClass = Class.forName(platformName); | |
| 128 | |
| 129 String plat1 = null; | |
| 130 String db1 = null; | |
| 131 String plat2 = null; | |
| 132 String db2 = null; | |
| 133 | |
| 134 String firstFile = null; | |
| 135 String lastFile = null; | |
| 136 | |
| 137 int numOptionalArgs = | |
| 138 (diffMode ? (args.length - 6) : (args.length - 3)); | |
| 139 if (numOptionalArgs < 0) { | |
| 140 usage(); | |
| 141 System.exit(1); | |
| 142 } | |
| 143 | |
| 144 plat1 = args[argc++]; | |
| 145 db1 = args[argc++]; | |
| 146 | |
| 147 if (diffMode) { | |
| 148 plat2 = args[argc++]; | |
| 149 db2 = args[argc++]; | |
| 150 } | |
| 151 | |
| 152 // argc now points at start of optional arguments, if any | |
| 153 | |
| 154 try { | |
| 155 boolean gotOne = true; | |
| 156 while (gotOne && (argc < args.length - 1)) { | |
| 157 gotOne = false; | |
| 158 String arg = args[argc]; | |
| 159 if (arg.equals("-firstFile")) { | |
| 160 firstFile = args[argc + 1]; | |
| 161 argc += 2; | |
| 162 gotOne = true; | |
| 163 } else if (arg.equals("-lastFile")) { | |
| 164 lastFile = args[argc + 1]; | |
| 165 argc += 2; | |
| 166 gotOne = true; | |
| 167 } | |
| 168 } | |
| 169 } | |
| 170 catch (Exception e) { | |
| 171 e.printStackTrace(); | |
| 172 usage(); | |
| 173 System.exit(1); | |
| 174 } | |
| 175 | |
| 176 Platform platform = (Platform) platformClass.newInstance(); | |
| 177 platform.setupFileTemplates(); | |
| 178 long t = platform.defaultGrandIncludeThreshold(); | |
| 179 | |
| 180 String[] platformArgs = null; | |
| 181 int numPlatformArgs = args.length - argc; | |
| 182 if (numPlatformArgs > 0) { | |
| 183 platformArgs = new String[numPlatformArgs]; | |
| 184 int offset = argc; | |
| 185 while (argc < args.length) { | |
| 186 platformArgs[argc - offset] = args[argc]; | |
| 187 ++argc; | |
| 188 } | |
| 189 } | |
| 190 | |
| 191 // If you want to change the threshold, change the default | |
| 192 // "grand include" threshold in Platform.java, or override | |
| 193 // it in the platform-specific file like UnixPlatform.java | |
| 194 | |
| 195 Database previous = new Database(platform, t); | |
| 196 Database current = new Database(platform, t); | |
| 197 | |
| 198 previous.canBeMissing(); | |
| 199 | |
| 200 if (firstFile != null) { | |
| 201 previous.setFirstFile(firstFile); | |
| 202 current.setFirstFile(firstFile); | |
| 203 } | |
| 204 if (lastFile != null) { | |
| 205 previous.setLastFile(lastFile); | |
| 206 current.setLastFile(lastFile); | |
| 207 } | |
| 208 | |
| 209 if (diffMode) { | |
| 210 System.out.println("Old database:"); | |
| 211 previous.get(plat1, db1); | |
| 212 previous.compute(); | |
| 213 System.out.println("New database:"); | |
| 214 current.get(plat2, db2); | |
| 215 current.compute(); | |
| 216 System.out.println("Deltas:"); | |
| 217 current.putDiffs(previous); | |
| 218 } else { | |
| 219 System.out.println("New database:"); | |
| 220 current.get(plat1, db1); | |
| 221 current.compute(); | |
| 222 current.put(); | |
| 223 } | |
| 224 | |
| 225 if (platformArgs != null) { | |
| 226 // Allow the platform to write platform-specific files | |
| 227 platform.writePlatformSpecificFiles(previous, current, | |
| 228 platformArgs); | |
| 229 } | |
| 230 } | |
| 231 catch (Exception e) { | |
| 232 e.printStackTrace(); | |
| 233 System.exit(1); | |
| 234 } | |
| 235 } | |
| 236 } |