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/*************************************************************************/
/* thread_posix.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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_posix.h"
#include "core/script_language.h"
#if (defined(UNIX_ENABLED) || defined(PTHREAD_ENABLED)) && !defined(NO_THREADS)
#ifdef PTHREAD_BSD_SET_NAME
#include <pthread_np.h>
#endif
#include "core/os/memory.h"
#include "core/safe_refcount.h"
static void _thread_id_key_destr_callback(void *p_value) {
memdelete(static_cast<Thread::ID *>(p_value));
}
static pthread_key_t _create_thread_id_key() {
pthread_key_t key;
pthread_key_create(&key, &_thread_id_key_destr_callback);
return key;
}
pthread_key_t ThreadPosix::thread_id_key = _create_thread_id_key();
Thread::ID ThreadPosix::next_thread_id = 0;
Thread::ID ThreadPosix::get_id() const {
return id;
}
Thread *ThreadPosix::create_thread_posix() {
return memnew(ThreadPosix);
}
void *ThreadPosix::thread_callback(void *userdata) {
ThreadPosix *t = reinterpret_cast<ThreadPosix *>(userdata);
t->id = atomic_increment(&next_thread_id);
pthread_setspecific(thread_id_key, (void *)memnew(ID(t->id)));
ScriptServer::thread_enter(); //scripts may need to attach a stack
t->callback(t->user);
ScriptServer::thread_exit();
return NULL;
}
Thread *ThreadPosix::create_func_posix(ThreadCreateCallback p_callback, void *p_user, const Settings &) {
ThreadPosix *tr = memnew(ThreadPosix);
tr->callback = p_callback;
tr->user = p_user;
pthread_attr_init(&tr->pthread_attr);
pthread_attr_setdetachstate(&tr->pthread_attr, PTHREAD_CREATE_JOINABLE);
pthread_attr_setstacksize(&tr->pthread_attr, 256 * 1024);
pthread_create(&tr->pthread, &tr->pthread_attr, thread_callback, tr);
return tr;
}
Thread::ID ThreadPosix::get_thread_id_func_posix() {
void *value = pthread_getspecific(thread_id_key);
if (value)
return *static_cast<ID *>(value);
ID new_id = atomic_increment(&next_thread_id);
pthread_setspecific(thread_id_key, (void *)memnew(ID(new_id)));
return new_id;
}
void ThreadPosix::wait_to_finish_func_posix(Thread *p_thread) {
ThreadPosix *tp = static_cast<ThreadPosix *>(p_thread);
ERR_FAIL_COND(!tp);
ERR_FAIL_COND(tp->pthread == 0);
pthread_join(tp->pthread, NULL);
tp->pthread = 0;
}
Error ThreadPosix::set_name_func_posix(const String &p_name) {
#ifdef PTHREAD_NO_RENAME
return ERR_UNAVAILABLE;
#else
#ifdef PTHREAD_RENAME_SELF
// check if thread is the same as caller
int err = pthread_setname_np(p_name.utf8().get_data());
#else
pthread_t running_thread = pthread_self();
#ifdef PTHREAD_BSD_SET_NAME
pthread_set_name_np(running_thread, p_name.utf8().get_data());
int err = 0; // Open/FreeBSD ignore errors in this function
#else
int err = pthread_setname_np(running_thread, p_name.utf8().get_data());
#endif // PTHREAD_BSD_SET_NAME
#endif // PTHREAD_RENAME_SELF
return err == 0 ? OK : ERR_INVALID_PARAMETER;
#endif // PTHREAD_NO_RENAME
};
void ThreadPosix::make_default() {
create_func = create_func_posix;
get_thread_id_func = get_thread_id_func_posix;
wait_to_finish_func = wait_to_finish_func_posix;
set_name_func = set_name_func_posix;
}
ThreadPosix::ThreadPosix() {
pthread = 0;
}
ThreadPosix::~ThreadPosix() {
}
#endif
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