src/Java/Global.hpp

   1 /*
   2  * Copyright (C) 2010-2011 Max Kellermann <max@duempel.org>
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * - Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *
  11  * - Redistributions in binary form must reproduce the above copyright
  12  * notice, this list of conditions and the following disclaimer in the
  13  * documentation and/or other materials provided with the
  14  * distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  19  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  20  * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  23  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  25  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  27  * OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #ifndef XCSOAR_JAVA_GLOBAL_HPP
  31 #define XCSOAR_JAVA_GLOBAL_HPP
  32
  33 #include "Compiler.h"
  34
  35 #include <jni.h>
  36 #include <stddef.h>
  37
  38 namespace Java {
  39   extern JavaVM *jvm;
  40
  41   void Init(JNIEnv *env);
  42
  43   static inline void
  44   DetachCurrentThread()
  45   {
  46     if (jvm != NULL)
  47       jvm->DetachCurrentThread();
  48   }
  49
  50   static inline gcc_pure
  51   JNIEnv *GetEnv()
  52   {
  53     JNIEnv *env;
  54     jvm->AttachCurrentThread(&env, NULL);
  55     return env;
  56   }
  57 }
  58
  59 #endif