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src/jdk.jcmd/share/classes/sun/tools/jmap/JMap.java

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rev 48074 : 8189102: All tools should support -?, -h and --help
Reviewed-by: kvn, jjg, weijun, alanb, rfield, ksrini

*** 1,7 **** /* ! * Copyright (c) 2005, 2013, 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 --- 1,7 ---- /* ! * Copyright (c) 2005, 2017, 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
*** 62,72 **** while (optionCount < args.length) { String arg = args[optionCount]; if (!arg.startsWith("-")) { break; } ! if (arg.equals("-help") || arg.equals("-h")) { usage(0); } else { if (option != null) { usage(1); // option already specified } --- 62,76 ---- while (optionCount < args.length) { String arg = args[optionCount]; if (!arg.startsWith("-")) { break; } ! if (arg.equals("-?") || ! arg.equals("-h") || ! arg.equals("--help") || ! // -help: legacy. Undocumented. ! arg.equals("-help")) { usage(0); } else { if (option != null) { usage(1); // option already specified }
*** 245,254 **** --- 249,260 ---- System.err.println(" jmap -histo[:live] <pid>"); System.err.println(" to connect to running process and print histogram of java object heap"); System.err.println(" if the \"live\" suboption is specified, only count live objects"); System.err.println(" jmap -dump:<dump-options> <pid>"); System.err.println(" to connect to running process and dump java heap"); + System.err.println(" jmap -? -h --help"); + System.err.println(" to print this help message"); System.err.println(""); System.err.println(" dump-options:"); System.err.println(" live dump only live objects; if not specified,"); System.err.println(" all objects in the heap are dumped."); System.err.println(" format=b binary format");
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