Viivi Boot File Contents

Here the contents of viivi and viivi.bat, the boot files for Viivi, are explained.

Java Command Line

In the both files, the most important part for booting Viivi is the line beginning with java:

In the file viivi:

	java -Xss512m -Xms1024m -Xmx2048m -jar ${VIIVI_HOME}Viivi.jar ${*}

	java -Xss512m -Xms1024m -Xmx2048m -jar %VIIVI_HOME%Viivi.jar %1 %2 ... %8 %9

• The first element java is a command to boot-up the JVM.


• The following first three arguments specify the memory capacities assigned to the JVM.
  The underlined values below show the memory capacities.
  When Viivi does not run, please tune these values to suit your environment.
  
  
  • The first argument -Xss512m specifies the stack size of the JVM.
    Here in the example, 512MB is assigned to the stack.
    More stack size works effectively for the Scheme program with deeper procedure calls.
  
  
  • The second argument -Xms1024m specifies the initial heap size of the JVM.
    Here in the example, 1024MB is assigned to the initial heap.
    Setting the initial heap size small reduces the memory consumption for the Scheme program with small data amount.
  
  
  • And the third argument -Xmx2048m specifies the maximum heap size of the JVM.
    Here in the example, 2048MB is assigned to the maximum heap.
    More maximum heap size works effectively for the Scheme program with larger data amount.


• The fourth and the fifth arguments

  	-jar ${VIIVI_HOME}Viivi.jar
  	-jar %VIIVI_HOME%Viivi.jar
  

  in both files, respectively, indicate the JVM to run the program file Viivi.jar in the Viivi system directory VIIVI_HOME.


• And the arguments at the end
  

  	${*}
  	%1 %2 ... %8 %9
  

  will be replaced with the real arguments provided by the user, and then supplied to the program Viivi.jar.


• Computers have moved from a 32-bit environment to a 64-bit environment.
  As the result, only the 64-bit package of Viivi is available.
  Please note that the 32-bit mode is no more supported.
  Hence you cannot use the bit-model options -d32 and -d64 for java command.

Shell Script Header

For Unix-like platforms, the first line of the boot script file viivi describes the path to the shell command which runs the boot script file.
Considering bash is widely used for the recent platforms, it includes

	#!/bin/bash

	#!/bin/sh

	#!/usr/local/bin/tcsh