1 /*
   2  * Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
   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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #ifndef JAVAVIRTUALMACHINE_H
  27 #define JAVAVIRTUALMACHINE_H
  28 
  29 
  30 #include "jni.h"
  31 #include "Platform.h"
  32 #include "Library.h"
  33 
  34 struct JavaOptionItem {
  35     TString name;
  36     TString value;
  37     void* extraInfo;
  38 };
  39 
  40 class JavaOptions {
  41 private:
  42     std::list<JavaOptionItem> FItems;
  43     JavaVMOption* FOptions;
  44 
  45 public:
  46     JavaOptions();
  47     ~JavaOptions();
  48 
  49     void AppendValue(const TString Key, TString Value, void* Extra);
  50     void AppendValue(const TString Key, TString Value);
  51     void AppendValue(const TString Key);
  52     void AppendValues(OrderedMap<TString, TString> Values);
  53     void ReplaceValue(const TString Key, TString Value);
  54     std::list<TString> ToList();
  55     size_t GetCount();
  56 };
  57 
  58 class JavaVirtualMachine {
  59 private:
  60     JavaLibrary javaLibrary;
  61 
  62     void configureLibrary();
  63     bool launchVM(JavaOptions& options, std::list<TString>& vmargs);
  64 public:
  65     JavaVirtualMachine();
  66     ~JavaVirtualMachine(void);
  67 
  68     bool StartJVM();
  69 };
  70 
  71 bool RunVM();
  72 
  73 #endif // JAVAVIRTUALMACHINE_H