146 lines
4.8 KiB
C++
146 lines
4.8 KiB
C++
/*************************************************************************/
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/* thread_jandroid.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "thread_jandroid.h"
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#include "core/os/memory.h"
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#include "core/safe_refcount.h"
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#include "core/script_language.h"
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static pthread_key_t _create_thread_id_key() {
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pthread_key_t key;
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pthread_key_create(&key, NULL);
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return key;
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}
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pthread_key_t ThreadAndroid::thread_id_key = _create_thread_id_key();
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Thread::ID ThreadAndroid::next_thread_id = 0;
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Thread::ID ThreadAndroid::get_id() const {
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return id;
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}
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Thread *ThreadAndroid::create_thread_jandroid() {
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return memnew(ThreadAndroid);
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}
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void *ThreadAndroid::thread_callback(void *userdata) {
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ThreadAndroid *t = reinterpret_cast<ThreadAndroid *>(userdata);
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setup_thread();
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ScriptServer::thread_enter(); //scripts may need to attach a stack
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t->id = atomic_increment(&next_thread_id);
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pthread_setspecific(thread_id_key, (void *)t->id);
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t->callback(t->user);
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ScriptServer::thread_exit();
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return NULL;
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}
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Thread *ThreadAndroid::create_func_jandroid(ThreadCreateCallback p_callback, void *p_user, const Settings &) {
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ThreadAndroid *tr = memnew(ThreadAndroid);
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tr->callback = p_callback;
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tr->user = p_user;
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pthread_attr_init(&tr->pthread_attr);
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pthread_attr_setdetachstate(&tr->pthread_attr, PTHREAD_CREATE_JOINABLE);
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pthread_create(&tr->pthread, &tr->pthread_attr, thread_callback, tr);
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return tr;
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}
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Thread::ID ThreadAndroid::get_thread_id_func_jandroid() {
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return (ID)pthread_getspecific(thread_id_key);
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}
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void ThreadAndroid::wait_to_finish_func_jandroid(Thread *p_thread) {
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ThreadAndroid *tp = static_cast<ThreadAndroid *>(p_thread);
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ERR_FAIL_COND(!tp);
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ERR_FAIL_COND(tp->pthread == 0);
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pthread_join(tp->pthread, NULL);
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tp->pthread = 0;
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}
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void ThreadAndroid::_thread_destroyed(void *value) {
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/* The thread is being destroyed, detach it from the Java VM and set the mThreadKey value to NULL as required */
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JNIEnv *env = (JNIEnv *)value;
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if (env != NULL) {
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java_vm->DetachCurrentThread();
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pthread_setspecific(jvm_key, NULL);
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}
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}
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pthread_key_t ThreadAndroid::jvm_key;
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JavaVM *ThreadAndroid::java_vm = NULL;
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void ThreadAndroid::setup_thread() {
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if (pthread_getspecific(jvm_key))
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return; //already setup
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JNIEnv *env;
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java_vm->AttachCurrentThread(&env, NULL);
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pthread_setspecific(jvm_key, (void *)env);
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}
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void ThreadAndroid::make_default(JavaVM *p_java_vm) {
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java_vm = p_java_vm;
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create_func = create_func_jandroid;
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get_thread_id_func = get_thread_id_func_jandroid;
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wait_to_finish_func = wait_to_finish_func_jandroid;
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pthread_key_create(&jvm_key, _thread_destroyed);
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setup_thread();
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}
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JNIEnv *ThreadAndroid::get_env() {
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if (!pthread_getspecific(jvm_key)) {
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setup_thread();
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}
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JNIEnv *env = NULL;
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java_vm->AttachCurrentThread(&env, NULL);
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return env;
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}
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ThreadAndroid::ThreadAndroid() {
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pthread = 0;
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}
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ThreadAndroid::~ThreadAndroid() {
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}
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