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- /**************************************************************************/
- /* thread_apple.cpp */
- /**************************************************************************/
- /* This file is part of: */
- /* GODOT ENGINE */
- /* https://godotengine.org */
- /**************************************************************************/
- /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
- /* Copyright (c) 2007-2014 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_apple.h"
- #include "core/error/error_macros.h"
- #include "core/object/script_language.h"
- #include "core/string/ustring.h"
- SafeNumeric<uint64_t> Thread::id_counter(1); // The first value after .increment() is 2, hence by default the main thread ID should be 1.
- thread_local Thread::ID Thread::caller_id = Thread::id_counter.increment();
- struct ThreadData {
- Thread::Callback callback;
- void *userdata;
- Thread::ID caller_id;
- };
- void *Thread::thread_callback(void *p_data) {
- ThreadData *thread_data = static_cast<ThreadData *>(p_data);
- // Set the caller ID for this thread
- caller_id = thread_data->caller_id;
- ScriptServer::thread_enter(); // Scripts may need to attach a stack.
- // Call the actual callback
- thread_data->callback(thread_data->userdata);
- ScriptServer::thread_exit();
- // Clean up
- memdelete(thread_data);
- return nullptr;
- }
- Error Thread::set_name(const String &p_name) {
- int err = pthread_setname_np(p_name.utf8().get_data());
- return err == 0 ? OK : ERR_INVALID_PARAMETER;
- }
- Thread::ID Thread::start(Thread::Callback p_callback, void *p_user, const Settings &p_settings) {
- ERR_FAIL_COND_V_MSG(id != UNASSIGNED_ID, UNASSIGNED_ID, "A Thread object has been re-started without wait_to_finish() having been called on it.");
- id = id_counter.increment();
- ThreadData *thread_data = memnew(ThreadData);
- thread_data->callback = p_callback;
- thread_data->userdata = p_user;
- thread_data->caller_id = id;
- // Create the thread
- pthread_attr_t attr;
- pthread_attr_init(&attr);
- switch (p_settings.priority) {
- case PRIORITY_LOW:
- pthread_attr_set_qos_class_np(&attr, QOS_CLASS_UTILITY, 0);
- break;
- case PRIORITY_NORMAL:
- pthread_attr_set_qos_class_np(&attr, QOS_CLASS_USER_INITIATED, 0);
- break;
- case PRIORITY_HIGH:
- pthread_attr_set_qos_class_np(&attr, QOS_CLASS_USER_INTERACTIVE, 0);
- break;
- }
- if (p_settings.stack_size > 0) {
- pthread_attr_setstacksize(&attr, p_settings.stack_size);
- }
- // Create the thread
- pthread_create(&pthread, &attr, thread_callback, thread_data);
- // Clean up attributes
- pthread_attr_destroy(&attr);
- return id;
- }
- void Thread::wait_to_finish() {
- ERR_FAIL_COND_MSG(id == UNASSIGNED_ID, "Attempt of waiting to finish on a thread that was never started.");
- ERR_FAIL_COND_MSG(id == get_caller_id(), "Threads can't wait to finish on themselves, another thread must wait.");
- int err = pthread_join(pthread, nullptr);
- if (err != 0) {
- ERR_FAIL_MSG("Thread::wait_to_finish() failed to join thread.");
- }
- pthread = pthread_t();
- id = UNASSIGNED_ID;
- }
- Thread::~Thread() {
- if (id != UNASSIGNED_ID) {
- #ifdef DEBUG_ENABLED
- WARN_PRINT(
- "A Thread object is being destroyed without its completion having been realized.\n"
- "Please call wait_to_finish() on it to ensure correct cleanup.");
- #endif
- pthread_detach(pthread);
- }
- }
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