From 857e4c762a2c6f6c7bbf2e0d09037a2690b32c69 Mon Sep 17 00:00:00 2001
From: Mathieu Virbel <mat@kivy.org>
Date: Sat, 7 Feb 2015 19:33:19 +0100
Subject: [PATCH] add a jnius.detach() method to detach a thread that used some
 jni. This cannot be automatic as jnius do not control the thread creation, so
 it cannot add a callabck to autocall this method. It must be added by the
 user before the thread leave, if it used pyjnius inside.

Ref #107
Ref #97
---
 jnius/jni.pxi       | 1 +
 jnius/jnius.pyx     | 2 +-
 jnius/jnius_env.pxi | 4 ++++
 3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/jnius/jni.pxi b/jnius/jni.pxi
index afcd661..4e6c546 100644
--- a/jnius/jni.pxi
+++ b/jnius/jni.pxi
@@ -401,4 +401,5 @@ cdef extern from "jni.h":
 
     ctypedef struct JNIInvokeInterface:
         jint        (*AttachCurrentThread)(JavaVM *, JNIEnv **, void *)
+        jint        (*DetachCurrentThread)(JavaVM *)
 
diff --git a/jnius/jnius.pyx b/jnius/jnius.pyx
index 08f619a..dc074ba 100644
--- a/jnius/jnius.pyx
+++ b/jnius/jnius.pyx
@@ -87,7 +87,7 @@ Python::
 
 __all__ = ('JavaObject', 'JavaClass', 'JavaMethod', 'JavaField',
            'MetaJavaClass', 'JavaException', 'cast', 'find_javaclass',
-           'PythonJavaClass', 'java_method')
+           'PythonJavaClass', 'java_method', 'detach')
 
 from libc.stdlib cimport malloc, free
 from functools import partial
diff --git a/jnius/jnius_env.pxi b/jnius/jnius_env.pxi
index 84b58ff..336ab0e 100644
--- a/jnius/jnius_env.pxi
+++ b/jnius/jnius_env.pxi
@@ -19,3 +19,7 @@ cdef JNIEnv *get_jnienv() except NULL:
     jvm[0].AttachCurrentThread(jvm, &env, NULL)
     return env
 
+
+def detach():
+    jvm[0].DetachCurrentThread(jvm)
+