Merge branch 'develop' into trialMerge

[jalview.git] / src / jalview / bin / Launcher.java

diff --git a/src/jalview/bin/Launcher.java b/src/jalview/bin/Launcher.java
new file mode 100644 (file)
index 0000000..aec3acd
--- /dev/null
+++ b/src/jalview/bin/Launcher.java
@@ -0,0 +1,120 @@
+package jalview.bin;
+
+import java.io.File;
+import java.lang.management.ManagementFactory;
+import java.lang.management.OperatingSystemMXBean;
+import java.util.ArrayList;
+
+public class Launcher
+{
+
+  private final static String startClass = "jalview.bin.Jalview";
+
+  private final static int maxHeapSizePerCent = 95;
+
+  private final static String dockIconPath = "JalviewLogo_Huge.png";
+
+  public static void main(String[] args)
+  {
+    final String javaBin = System.getProperty("java.home") + File.separator
+            + "bin" + File.separator + "java";
+
+    ArrayList<String> command = new ArrayList<>();
+    command.add(javaBin);
+
+    boolean isAMac = System.getProperty("os.name").indexOf("Mac") > -1;
+
+    for (String jvmArg : ManagementFactory.getRuntimeMXBean()
+            .getInputArguments())
+    {
+      command.add(jvmArg);
+    }
+    command.add("-cp");
+    command.add(ManagementFactory.getRuntimeMXBean().getClassPath());
+    ArrayList<String> arguments = new ArrayList<>();
+    for (String arg : args)
+    {
+      arguments.add(arg);
+    }
+
+    // add memory setting if not specified
+    boolean memSet = false;
+    boolean dockIcon = false;
+    ARG: for (int i = 0; i < command.size(); i++)
+    {
+      String arg = command.get(i);
+      if (arg.startsWith("-Xmx"))
+      {
+        memSet = true;
+      }
+      else if (arg.startsWith("-Xdock:icon"))
+      {
+        dockIcon = true;
+      }
+    }
+
+    if (!memSet)
+    {
+      long maxMemLong = -1;
+      long physicalMem = getPhysicalMemory();
+      if (physicalMem > 0)
+      {
+        maxMemLong = physicalMem * maxHeapSizePerCent / 100;
+      }
+      if (maxMemLong > 0)
+      {
+        command.add("-Xmx" + Long.toString(maxMemLong));
+      }
+    }
+
+    if (!dockIcon && isAMac)
+    {
+      command.add("-Xdock:icon=" + dockIconPath);
+      // -Xdock:name=... doesn't actually work :(
+      // Leaving it in in case it gets fixed
+      command.add("-Xdock:name=" + "Jalview");
+    }
+
+    command.add(startClass);
+    command.addAll(arguments);
+
+    final ProcessBuilder builder = new ProcessBuilder(command);
+
+    System.out.println("COMMAND: " + String.join(" ", builder.command()));
+
+    try
+    {
+      builder.inheritIO();
+      Process process = builder.start();
+      process.waitFor();
+    } catch (Exception e)
+    {
+      e.printStackTrace();
+    }
+    // System.exit(0);
+
+  }
+
+  public static long getPhysicalMemory()
+  {
+    final OperatingSystemMXBean o = ManagementFactory
+            .getOperatingSystemMXBean();
+
+    try
+    {
+      if (o instanceof com.sun.management.OperatingSystemMXBean)
+      {
+        final com.sun.management.OperatingSystemMXBean osb = (com.sun.management.OperatingSystemMXBean) o;
+        return osb.getTotalPhysicalMemorySize();
+      }
+    } catch (NoClassDefFoundError e)
+    {
+      // com.sun.management.OperatingSystemMXBean doesn't exist in this JVM
+      System.out.println("No com.sun.management.OperatingSystemMXBean");
+    }
+
+    // We didn't get a com.sun.management.OperatingSystemMXBean.
+    return -1;
+  }
+
+}