2 * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
3 * Copyright (C) $$Year-Rel$$ The Jalview Authors
5 * This file is part of Jalview.
7 * Jalview is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation, either version 3
10 * of the License, or (at your option) any later version.
12 * Jalview is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty
14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 * PURPOSE. See the GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Jalview. If not, see <http://www.gnu.org/licenses/>.
19 * The Jalview Authors are detailed in the 'AUTHORS' file.
24 import java.io.IOException;
25 import java.lang.management.ManagementFactory;
26 import java.util.ArrayList;
27 import java.util.List;
30 * A Launcher class for Jalview. This class is used to launch Jalview from the
31 * shadowJar when Getdown is not used or available. It attempts to take all the
32 * command line arguments to pass on to the jalview.bin.Jalview class, but to
33 * insert a -Xmx memory setting to a sensible default, using the -jvmmempc and
34 * -jvmmemmax application arguments if specified. If not specified then system
35 * properties will be looked for by jalview.bin.MemorySetting. If the user has
36 * provided the JVM with a -Xmx setting directly and not set -jvmmempc or
37 * -jvmmemmax then this setting will be used and system properties ignored. If
38 * -Xmx is set as well as -jvmmempc or -jvmmemmax as argument(s) then the -Xmx
39 * argument will NOT be passed on to the main application launch.
46 private final static String startClass = "jalview.bin.Jalview";
48 private final static String dockIconPath = "JalviewLogo_Huge.png";
51 * main method for jalview.bin.Launcher. This restarts the same JRE's JVM with
52 * the same arguments but with memory adjusted based on extracted -jvmmempc and
53 * -jvmmemmax application arguments. If on a Mac then extra dock:icon and
54 * dock:name arguments are also set.
58 public static void main(String[] args)
60 final String javaBin = System.getProperty("java.home") + File.separator
61 + "bin" + File.separator + "java";
63 List<String> command = new ArrayList<>();
66 String memSetting = null;
68 boolean isAMac = System.getProperty("os.name").indexOf("Mac") > -1;
70 for (String jvmArg : ManagementFactory.getRuntimeMXBean()
76 command.add(ManagementFactory.getRuntimeMXBean().getClassPath());
78 String jvmmempc = null;
79 String jvmmemmax = null;
80 ArrayList<String> arguments = new ArrayList<>();
81 for (String arg : args)
83 // jvmmempc and jvmmemmax args used to set memory and are not passed on to
86 "-" + MemorySetting.MAX_HEAPSIZE_PERCENT_PROPERTY_NAME + "="))
88 jvmmempc = arg.substring(
89 MemorySetting.MAX_HEAPSIZE_PERCENT_PROPERTY_NAME.length()
92 else if (arg.startsWith(
93 "-" + MemorySetting.MAX_HEAPSIZE_PROPERTY_NAME + "="))
95 jvmmemmax = arg.substring(
96 MemorySetting.MAX_HEAPSIZE_PROPERTY_NAME.length() + 2);
104 // add memory setting if not specified
105 boolean memSet = false;
106 boolean dockIcon = false;
107 boolean dockName = false;
108 for (int i = 0; i < command.size(); i++)
110 String arg = command.get(i);
111 if (arg.startsWith("-Xmx"))
113 // only use -Xmx if jvmmemmax and jvmmempc have not been set
114 if (jvmmempc == null && jvmmemmax == null)
120 else if (arg.startsWith("-Xdock:icon"))
124 else if (arg.startsWith("-Xdock:name"))
132 long maxMemLong = MemorySetting.getMemorySetting(jvmmemmax, jvmmempc);
136 memSetting = "-Xmx" + Long.toString(maxMemLong);
138 command.add(memSetting);
146 command.add("-Xdock:icon=" + dockIconPath);
150 // -Xdock:name=... doesn't actually work :(
151 // Leaving it in in case it gets fixed
152 command.add("-Xdock:name=" + "Jalview");
156 command.add(startClass);
157 command.addAll(arguments);
159 final ProcessBuilder builder = new ProcessBuilder(command);
161 // System.out.println("COMMAND: " + String.join(" ", builder.command()));
162 System.out.println("Running " + startClass + " with "
163 + (memSetting == null ? "no memory setting" : memSetting));
165 if (Boolean.parseBoolean(System.getProperty("launcherstop")))
172 Process process = builder.start();
174 } catch (IOException e)
176 if (e.getMessage().toLowerCase().contains("memory"))
178 System.out.println("Caught a memory exception: " + e.getMessage());
179 // Probably the "Cannot allocate memory" error, try without the memory setting
180 ArrayList<String> commandNoMem = new ArrayList<>();
181 for (int i = 0; i < command.size(); i++)
183 if (!command.get(i).startsWith("-Xmx"))
185 commandNoMem.add(command.get(i));
188 final ProcessBuilder builderNoMem = new ProcessBuilder(
190 System.out.println("Command without memory setting: "
191 + String.join(" ", builderNoMem.command()));
194 builderNoMem.inheritIO();
195 Process processNoMem = builderNoMem.start();
196 processNoMem.waitFor();
197 } catch (Exception ex)
199 ex.printStackTrace();
206 } catch (Exception e)