MPD  0.20.15
Global.hxx
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1 /*
2  * Copyright (C) 2010-2011 Max Kellermann <max.kellermann@gmail.com>
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 JAVA_GLOBAL_HXX
31 #define JAVA_GLOBAL_HXX
32 
33 #include "Compiler.h"
34 
35 #include <jni.h>
36 
37 namespace Java {
38  extern JavaVM *jvm;
39 
40  void Init(JNIEnv *env);
41 
42  static inline void
44  {
45  if (jvm != nullptr)
46  jvm->DetachCurrentThread();
47  }
48 
49  static inline gcc_pure
50  JNIEnv *GetEnv()
51  {
52  JNIEnv *env;
53  jvm->AttachCurrentThread(&env, nullptr);
54  return env;
55  }
56 }
57 
58 #endif
void Init(JNIEnv *env)
JavaVM * jvm
static gcc_pure JNIEnv * GetEnv()
Definition: Global.hxx:50
Definition: Class.hxx:37
#define gcc_pure
Definition: Compiler.h:116
static void DetachCurrentThread()
Definition: Global.hxx:43