text: /*************************************************************************/
  /*  thread_jandroid.cpp                                                  */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                    http://www.godotengine.org                         */
  /*************************************************************************/
  /* Copyright (c) 2007-2015 Juan Linietsky, Ariel Manzur.                 */
  /*                                                                       */
  /* Permission is hereby granted, free of charge, to any person obtaining */
  /* a copy of this software and associated documentation files (the       */
  /* "Software"), to deal in the Software without restriction, including   */
  /* without limitation the rights to use, copy, modify, merge, publish,   */
  /* distribute, sublicense, and/or sell copies of the Software, and to    */
  /* permit persons to whom the Software is furnished to do so, subject to */
  /* the following conditions:                                             */
  /*                                                                       */
  /* The above copyright notice and this permission notice shall be        */
  /* included in all copies or substantial portions of the Software.       */
  /*                                                                       */
  /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
  /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
  /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
  /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
  /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
  /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
  /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
  /*************************************************************************/
  #include "thread_jandroid.h"
  
  #include "os/memory.h"
  
  Thread::ID ThreadAndroid::get_ID() const {
  
  	return id;
  }
  
  Thread* ThreadAndroid::create_thread_jandroid() {
  
  	return memnew( ThreadAndroid );
  }
  
  void *ThreadAndroid::thread_callback(void *userdata) {
  
  	ThreadAndroid *t=reinterpret_cast<ThreadAndroid*>(userdata);
  	setup_thread();
  	t->id=(ID)pthread_self();
  	t->callback(t->user);
  	return NULL;
  }
  
  Thread* ThreadAndroid::create_func_jandroid(ThreadCreateCallback p_callback,void *p_user,const Settings&) {
  
  	ThreadAndroid *tr= memnew(ThreadAndroid);
  	tr->callback=p_callback;
  	tr->user=p_user;
  	pthread_attr_init(&tr->pthread_attr);
  	 pthread_attr_setdetachstate(&tr->pthread_attr, PTHREAD_CREATE_JOINABLE);
  
  	pthread_create(&tr->pthread, &tr->pthread_attr, thread_callback, tr);
  
  	return tr;
  }
  Thread::ID ThreadAndroid::get_thread_ID_func_jandroid() {
  
  	return (ID)pthread_self();
  }
  void ThreadAndroid::wait_to_finish_func_jandroid(Thread* p_thread) {
  
  	ThreadAndroid *tp=static_cast<ThreadAndroid*>(p_thread);
  	ERR_FAIL_COND(!tp);
  	ERR_FAIL_COND(tp->pthread==0);
  
  	pthread_join(tp->pthread,NULL);
  	tp->pthread=0;
  }
  
  void ThreadAndroid::_thread_destroyed(void* value) {
  
  	/* The thread is being destroyed, detach it from the Java VM and set the mThreadKey value to NULL as required */
  	JNIEnv *env = (JNIEnv*) value;
  	if (env != NULL) {
  		java_vm->DetachCurrentThread();
  		pthread_setspecific(jvm_key, NULL);
  	}
  
  }
  
  pthread_key_t ThreadAndroid::jvm_key;
  JavaVM* ThreadAndroid::java_vm=NULL;
  
  void ThreadAndroid::setup_thread() {
  
  	if (pthread_getspecific(jvm_key))
  		return; //already setup
  	JNIEnv *env;
  	java_vm->AttachCurrentThread(&env, NULL);
  	pthread_setspecific(jvm_key, (void*) env);
  
  }
  
  void ThreadAndroid::make_default(JavaVM* p_java_vm) {
  
  	java_vm=p_java_vm;
  	create_func=create_func_jandroid;
  	get_thread_ID_func=get_thread_ID_func_jandroid;
  	wait_to_finish_func=wait_to_finish_func_jandroid;
  	pthread_key_create(&jvm_key, _thread_destroyed);
  	setup_thread();
  
  }
  
  JNIEnv *ThreadAndroid::get_env() {
  
  	if (!pthread_getspecific(jvm_key)) {
  		setup_thread();
  	}
  
  	JNIEnv *env=NULL;
  	int status = java_vm->AttachCurrentThread(&env, NULL);
  	return env;
  }
  
  
  ThreadAndroid::ThreadAndroid() {
  
  	pthread=0;
  }
  
  
  ThreadAndroid::~ThreadAndroid() {
  
  }
  
  
  