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Merge pull request #63141 from reduz/implement-thread-runner

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Rémi Verschelde 2022-07-22 13:25:31 +02:00 committed by GitHub
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463
core/object/worker_thread_pool.cpp Normal file
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@ -0,0 +1,463 @@
/*************************************************************************/
/* worker_thread_pool.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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 "worker_thread_pool.h"
#include "core/os/os.h"
WorkerThreadPool *WorkerThreadPool::singleton = nullptr;
void WorkerThreadPool::_process_task_queue() {
task_mutex.lock();
Task *task = task_queue.first()->self();
task_queue.remove(task_queue.first());
task_mutex.unlock();
_process_task(task);
}
void WorkerThreadPool::_process_task(Task *p_task) {
bool low_priority = p_task->low_priority;
if (p_task->group) {
// Handling a group
bool do_post = false;
if (p_task->native_group_func) {
while (true) {
uint32_t work_index = p_task->group->index.postincrement();
if (work_index >= p_task->group->max) {
do_post = work_index == p_task->group->max; // First one reaching max handles semaphore and clean-up.
break;
}
p_task->native_group_func(p_task->native_func_userdata, work_index);
}
} else {
Callable::CallError ce;
Variant ret;
Variant arg;
Variant *argptr = &arg;
while (true) {
uint32_t work_index = p_task->group->index.postincrement();
if (work_index >= p_task->group->max) {
do_post = work_index == p_task->group->max; // First one reaching max handles semaphore and clean-up.
break;
}
arg = work_index;
p_task->callable.call((const Variant **)&argptr, 1, ret, ce);
}
}
if (low_priority && use_native_low_priority_threads) {
p_task->completed = true;
p_task->done_semaphore.post();
if (do_post) {
p_task->group->completed.set_to(true);
}
} else {
if (do_post) {
p_task->group->done_semaphore.post();
p_task->group->completed.set_to(true);
}
uint32_t max_users = p_task->group->tasks_used + 1; // Add 1 because the thread waiting for it is also user. Read before to avoid another thread freeing task after increment.
uint32_t finished_users = p_task->group->finished.increment();
if (finished_users == max_users) {
// Get rid of the group, because nobody else is using it.
task_mutex.lock();
group_allocator.free(p_task->group);
task_mutex.unlock();
}
// For groups, tasks get rid of themselves.
task_mutex.lock();
task_allocator.free(p_task);
task_mutex.unlock();
}
} else {
if (p_task->native_func) {
p_task->native_func(p_task->native_func_userdata);
} else {
Callable::CallError ce;
Variant ret;
p_task->callable.call(nullptr, 0, ret, ce);
}
p_task->completed = true;
p_task->done_semaphore.post();
}
if (!use_native_low_priority_threads && low_priority) {
// A low prioriry task was freed, so see if we can move a pending one to the high priority queue.
bool post = false;
task_mutex.lock();
if (low_priority_task_queue.first()) {
Task *low_prio_task = low_priority_task_queue.first()->self();
low_priority_task_queue.remove(low_priority_task_queue.first());
task_queue.add_last(&low_prio_task->task_elem);
post = true;
} else {
low_priority_threads_used.decrement();
}
task_mutex.lock();
if (post) {
task_available_semaphore.post();
}
}
}
void WorkerThreadPool::_thread_function(void *p_user) {
while (true) {
singleton->task_available_semaphore.wait();
if (singleton->exit_threads.is_set()) {
break;
}
singleton->_process_task_queue();
}
}
void WorkerThreadPool::_native_low_priority_thread_function(void *p_user) {
Task *task = (Task *)p_user;
singleton->_process_task(task);
}
void WorkerThreadPool::_post_task(Task *p_task, bool p_high_priority) {
task_mutex.lock();
p_task->low_priority = !p_high_priority;
if (!p_high_priority && use_native_low_priority_threads) {
task_mutex.unlock();
p_task->low_priority_thread = native_thread_allocator.alloc();
p_task->low_priority_thread->start(_native_low_priority_thread_function, p_task); // Pask task directly to thread.
} else if (p_high_priority || low_priority_threads_used.get() < max_low_priority_threads) {
task_queue.add_last(&p_task->task_elem);
if (!p_high_priority) {
low_priority_threads_used.increment();
}
task_mutex.unlock();
task_available_semaphore.post();
} else {
// Too many threads using low priority, must go to queue.
low_priority_task_queue.add_last(&p_task->task_elem);
task_mutex.unlock();
}
}
WorkerThreadPool::TaskID WorkerThreadPool::add_native_task(void (*p_func)(void *), void *p_userdata, bool p_high_priority, const String &p_description) {
task_mutex.lock();
// Get a free task
Task *task = task_allocator.alloc();
TaskID id = last_task++;
task->native_func = p_func;
task->native_func_userdata = p_userdata;
task->description = p_description;
tasks.insert(id, task);
task_mutex.unlock();
_post_task(task, p_high_priority);
return id;
}
WorkerThreadPool::TaskID WorkerThreadPool::add_task(const Callable &p_action, bool p_high_priority, const String &p_description) {
task_mutex.lock();
// Get a free task
Task *task = task_allocator.alloc();
TaskID id = last_task++;
task->callable = p_action;
task->description = p_description;
tasks.insert(id, task);
task_mutex.unlock();
_post_task(task, p_high_priority);
return id;
}
bool WorkerThreadPool::is_task_completed(TaskID p_task_id) const {
task_mutex.lock();
const Task *const *taskp = tasks.getptr(p_task_id);
if (!taskp) {
task_mutex.unlock();
ERR_FAIL_V_MSG(false, "Invalid Task ID"); // Invalid task
}
bool completed = (*taskp)->completed;
task_mutex.unlock();
return completed;
}
void WorkerThreadPool::wait_for_task_completion(TaskID p_task_id) {
task_mutex.lock();
Task **taskp = tasks.getptr(p_task_id);
if (!taskp) {
task_mutex.unlock();
ERR_FAIL_MSG("Invalid Task ID"); // Invalid task
}
Task *task = *taskp;
if (task->waiting) {
String description = task->description;
task_mutex.unlock();
if (description.is_empty()) {
ERR_FAIL_MSG("Another thread is waiting on this task: " + itos(p_task_id)); // Invalid task
} else {
ERR_FAIL_MSG("Another thread is waiting on this task: " + description + " (" + itos(p_task_id) + ")"); // Invalid task
}
}
task->waiting = true;
task_mutex.unlock();
if (use_native_low_priority_threads && task->low_priority) {
task->low_priority_thread->wait_to_finish();
native_thread_allocator.free(task->low_priority_thread);
} else {
int *index = thread_ids.getptr(Thread::get_caller_id());
if (index) {
// We are an actual process thread, we must not be blocked so continue processing stuff if available.
while (true) {
if (task->done_semaphore.try_wait()) {
// If done, exit
break;
}
if (task_available_semaphore.try_wait()) {
// Solve tasks while they are around.
_process_task_queue();
continue;
}
OS::get_singleton()->delay_usec(1); // Microsleep, this could be converted to waiting for multiple objects in supported platforms for a bit more performance.
}
} else {
task->done_semaphore.wait();
}
}
task_mutex.lock();
tasks.erase(p_task_id);
task_allocator.free(task);
task_mutex.unlock();
}
WorkerThreadPool::GroupID WorkerThreadPool::add_native_group_task(void (*p_func)(void *, uint32_t), void *p_userdata, int p_elements, int p_tasks, bool p_high_priority, const String &p_description) {
ERR_FAIL_COND_V(p_elements <= 0, INVALID_TASK_ID);
if (p_tasks < 0) {
p_tasks = threads.size();
}
task_mutex.lock();
Group *group = group_allocator.alloc();
GroupID id = last_task++;
group->max = p_elements;
group->self = id;
group->tasks_used = p_tasks;
Task **tasks_posted = (Task **)alloca(sizeof(Task *) * p_tasks);
for (int i = 0; i < p_tasks; i++) {
Task *task = task_allocator.alloc();
task->native_group_func = p_func;
task->native_func_userdata = p_userdata;
task->description = p_description;
task->group = group;
tasks_posted[i] = task;
// No task ID is used.
}
groups[id] = group;
task_mutex.unlock();
if (!p_high_priority && use_native_low_priority_threads) {
group->low_priority_native_tasks.resize(p_tasks);
}
for (int i = 0; i < p_tasks; i++) {
_post_task(tasks_posted[i], p_high_priority);
if (!p_high_priority && use_native_low_priority_threads) {
group->low_priority_native_tasks[i] = tasks_posted[i];
}
}
return id;
}
WorkerThreadPool::GroupID WorkerThreadPool::add_group_task(const Callable &p_action, int p_elements, int p_tasks, bool p_high_priority, const String &p_description) {
ERR_FAIL_COND_V(p_elements <= 0, INVALID_TASK_ID);
if (p_tasks < 0) {
p_tasks = threads.size();
}
task_mutex.lock();
Group *group = group_allocator.alloc();
GroupID id = last_task++;
group->max = p_elements;
group->self = id;
group->tasks_used = p_tasks;
Task **tasks_posted = (Task **)alloca(sizeof(Task *) * p_tasks);
for (int i = 0; i < p_tasks; i++) {
Task *task = task_allocator.alloc();
task->callable = p_action;
task->description = p_description;
task->group = group;
tasks_posted[i] = task;
// No task ID is used.
}
groups[id] = group;
task_mutex.unlock();
if (!p_high_priority && use_native_low_priority_threads) {
group->low_priority_native_tasks.resize(p_tasks);
}
for (int i = 0; i < p_tasks; i++) {
_post_task(tasks_posted[i], p_high_priority);
if (!p_high_priority && use_native_low_priority_threads) {
group->low_priority_native_tasks[i] = tasks_posted[i];
}
}
return id;
}
bool WorkerThreadPool::is_group_task_completed(GroupID p_group) const {
task_mutex.lock();
const Group *const *groupp = groups.getptr(p_group);
if (!groupp) {
task_mutex.unlock();
ERR_FAIL_V_MSG(false, "Invalid Group ID");
}
bool completed = (*groupp)->completed.is_set();
task_mutex.unlock();
return completed;
}
void WorkerThreadPool::wait_for_group_task_completion(GroupID p_group) {
task_mutex.lock();
Group **groupp = groups.getptr(p_group);
task_mutex.unlock();
if (!groupp) {
ERR_FAIL_MSG("Invalid Group ID");
}
Group *group = *groupp;
if (group->low_priority_native_tasks.size() > 0) {
for (uint32_t i = 0; i < group->low_priority_native_tasks.size(); i++) {
group->low_priority_native_tasks[i]->low_priority_thread->wait_to_finish();
native_thread_allocator.free(group->low_priority_native_tasks[i]->low_priority_thread);
task_mutex.lock();
task_allocator.free(group->low_priority_native_tasks[i]);
task_mutex.unlock();
}
task_mutex.lock();
group_allocator.free(group);
task_mutex.unlock();
} else {
group->done_semaphore.wait();
uint32_t max_users = group->tasks_used + 1; // Add 1 because the thread waiting for it is also user. Read before to avoid another thread freeing task after increment.
uint32_t finished_users = group->finished.increment(); // fetch happens before inc, so increment later.
if (finished_users == max_users) {
// All tasks using this group are gone (finished before the group), so clear the gorup too.
task_mutex.lock();
group_allocator.free(group);
task_mutex.unlock();
}
}
groups.erase(p_group); // Threads do not access this, so safe to erase here.
}
void WorkerThreadPool::init(int p_thread_count, bool p_use_native_threads_low_priority, float p_low_priority_task_ratio) {
ERR_FAIL_COND(threads.size() > 0);
if (p_thread_count < 0) {
p_thread_count = OS::get_singleton()->get_default_thread_pool_size();
}
if (p_use_native_threads_low_priority) {
max_low_priority_threads = 0;
} else {
max_low_priority_threads = CLAMP(p_thread_count * p_low_priority_task_ratio, 1, p_thread_count);
}
use_native_low_priority_threads = p_use_native_threads_low_priority;
threads.resize(p_thread_count);
for (uint32_t i = 0; i < threads.size(); i++) {
threads[i].index = i;
threads[i].thread.start(&WorkerThreadPool::_thread_function, &threads[i]);
thread_ids.insert(threads[i].thread.get_id(), i);
}
}
void WorkerThreadPool::finish() {
if (threads.size() == 0) {
return;
}
task_mutex.lock();
SelfList<Task> *E = low_priority_task_queue.first();
while (E) {
print_error("Task waiting was never re-claimed: " + E->self()->description);
E = E->next();
}
task_mutex.unlock();
exit_threads.set_to(true);
for (uint32_t i = 0; i < threads.size(); i++) {
task_available_semaphore.post();
}
for (uint32_t i = 0; i < threads.size(); i++) {
threads[i].thread.wait_to_finish();
}
threads.clear();
}
void WorkerThreadPool::_bind_methods() {
ClassDB::bind_method(D_METHOD("add_task", "action", "high_priority", "description"), &WorkerThreadPool::add_task, DEFVAL(false), DEFVAL(String()));
ClassDB::bind_method(D_METHOD("is_task_completed", "task_id"), &WorkerThreadPool::is_task_completed);
ClassDB::bind_method(D_METHOD("wait_for_task_completion", "task_id"), &WorkerThreadPool::wait_for_task_completion);
ClassDB::bind_method(D_METHOD("add_group_task", "action", "elements", "tasks_needed", "high_priority", "description"), &WorkerThreadPool::add_group_task, DEFVAL(-1), DEFVAL(false), DEFVAL(String()));
ClassDB::bind_method(D_METHOD("is_group_task_completed", "group_id"), &WorkerThreadPool::is_group_task_completed);
ClassDB::bind_method(D_METHOD("wait_for_group_task_completion", "group_id"), &WorkerThreadPool::wait_for_group_task_completion);
}
WorkerThreadPool::WorkerThreadPool() {
singleton = this;
}
WorkerThreadPool::~WorkerThreadPool() {
finish();
}

146
core/object/worker_thread_pool.h Normal file
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@ -0,0 +1,146 @@
/*************************************************************************/
/* worker_thread_pool.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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. */
/*************************************************************************/
#ifndef WORKER_THREAD_POOL_H
#define WORKER_THREAD_POOL_H
#include "core/os/memory.h"
#include "core/os/os.h"
#include "core/os/semaphore.h"
#include "core/os/thread.h"
#include "core/templates/local_vector.h"
#include "core/templates/paged_allocator.h"
#include "core/templates/rid.h"
#include "core/templates/safe_refcount.h"
class WorkerThreadPool : public Object {
GDCLASS(WorkerThreadPool, Object)
public:
enum {
INVALID_TASK_ID = -1
};
typedef int64_t TaskID;
typedef int64_t GroupID;
private:
struct Task;
struct Group {
GroupID self;
SafeNumeric<uint32_t> index;
uint32_t max = 0;
Semaphore done_semaphore;
SafeFlag completed;
SafeNumeric<uint32_t> finished;
uint32_t tasks_used = 0;
TightLocalVector<Task *> low_priority_native_tasks;
};
struct Task {
Callable callable;
void (*native_func)(void *) = nullptr;
void (*native_group_func)(void *, uint32_t) = nullptr;
void *native_func_userdata = nullptr;
String description;
Semaphore done_semaphore;
bool completed = false;
Group *group = nullptr;
SelfList<Task> task_elem;
bool waiting = false; // Waiting for completion
bool low_priority = false;
Thread *low_priority_thread = nullptr;
Task() :
task_elem(this) {}
};
PagedAllocator<Task> task_allocator;
PagedAllocator<Group> group_allocator;
PagedAllocator<Thread> native_thread_allocator;
SelfList<Task>::List low_priority_task_queue;
SelfList<Task>::List task_queue;
Mutex task_mutex;
Semaphore task_available_semaphore;
struct ThreadData {
uint32_t index;
Thread thread;
};
TightLocalVector<ThreadData> threads;
SafeFlag exit_threads;
HashMap<Thread::ID, int> thread_ids;
HashMap<TaskID, Task *> tasks;
HashMap<GroupID, Group *> groups;
bool use_native_low_priority_threads = false;
uint32_t max_low_priority_threads = 0;
SafeNumeric<uint32_t> low_priority_threads_used;
uint64_t last_task = 1;
static void _thread_function(void *p_user);
static void _native_low_priority_thread_function(void *p_user);
void _process_task_queue();
void _process_task(Task *task);
void _post_task(Task *p_task, bool p_high_priority);
static WorkerThreadPool *singleton;
protected:
static void _bind_methods();
public:
TaskID add_native_task(void (*p_func)(void *), void *p_userdata, bool p_high_priority = false, const String &p_description = String());
TaskID add_task(const Callable &p_action, bool p_high_priority = false, const String &p_description = String());
bool is_task_completed(TaskID p_task_id) const;
void wait_for_task_completion(TaskID p_task_id);
GroupID add_native_group_task(void (*p_func)(void *, uint32_t), void *p_userdata, int p_elements, int p_tasks = -1, bool p_high_priority = false, const String &p_description = String());
GroupID add_group_task(const Callable &p_action, int p_elements, int p_tasks = -1, bool p_high_priority = false, const String &p_description = String());
bool is_group_task_completed(GroupID p_group) const;
void wait_for_group_task_completion(GroupID p_group);
_FORCE_INLINE_ int get_thread_count() const { return threads.size(); }
static WorkerThreadPool *get_singleton() { return singleton; }
void init(int p_thread_count = -1, bool p_use_native_threads_low_priority = true, float p_low_priority_task_ratio = 0.3);
void finish();
WorkerThreadPool();
~WorkerThreadPool();
};
#endif // WORKER_THREAD_POOL_H

21
core/register_core_types.cpp
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@ -74,6 +74,7 @@
#include "core/object/class_db.h"
#include "core/object/script_language_extension.h"
#include "core/object/undo_redo.h"
#include "core/object/worker_thread_pool.h"
#include "core/os/main_loop.h"
#include "core/os/time.h"
#include "core/string/optimized_translation.h"
@ -101,6 +102,8 @@ static IP *ip = nullptr;
static core_bind::Geometry2D *_geometry_2d = nullptr;
static core_bind::Geometry3D *_geometry_3d = nullptr;
static WorkerThreadPool *worker_thread_pool = nullptr;
extern Mutex _global_mutex;
static NativeExtensionManager *native_extension_manager = nullptr;
@ -189,6 +192,8 @@ void register_core_types() {
GDREGISTER_CLASS(PacketPeerUDP);
GDREGISTER_CLASS(UDPServer);
GDREGISTER_ABSTRACT_CLASS(WorkerThreadPool);
ClassDB::register_custom_instance_class<HTTPClient>();
// Crypto
@ -271,6 +276,8 @@ void register_core_types() {
GDREGISTER_NATIVE_STRUCT(AudioFrame, "float left;float right");
GDREGISTER_NATIVE_STRUCT(ScriptLanguageExtensionProfilingInfo, "StringName signature;uint64_t call_count;uint64_t total_time;uint64_t self_time");
worker_thread_pool = memnew(WorkerThreadPool);
}
void register_core_settings() {
@ -279,9 +286,18 @@ void register_core_settings() {
ProjectSettings::get_singleton()->set_custom_property_info("network/limits/tcp/connect_timeout_seconds", PropertyInfo(Variant::INT, "network/limits/tcp/connect_timeout_seconds", PROPERTY_HINT_RANGE, "1,1800,1"));
GLOBAL_DEF_RST("network/limits/packet_peer_stream/max_buffer_po2", (16));
ProjectSettings::get_singleton()->set_custom_property_info("network/limits/packet_peer_stream/max_buffer_po2", PropertyInfo(Variant::INT, "network/limits/packet_peer_stream/max_buffer_po2", PROPERTY_HINT_RANGE, "0,64,1,or_greater"));
GLOBAL_DEF("network/ssl/certificate_bundle_override", "");
ProjectSettings::get_singleton()->set_custom_property_info("network/ssl/certificate_bundle_override", PropertyInfo(Variant::STRING, "network/ssl/certificate_bundle_override", PROPERTY_HINT_FILE, "*.crt"));
int worker_threads = GLOBAL_DEF("threading/worker_pool/max_threads", -1);
bool low_priority_use_system_threads = GLOBAL_DEF("threading/worker_pool/use_system_threads_for_low_priority_tasks", true);
float low_property_ratio = GLOBAL_DEF("threading/worker_pool/low_priority_thread_ratio", 0.3);
if (Engine::get_singleton()->is_editor_hint() || Engine::get_singleton()->is_project_manager_hint()) {
worker_thread_pool->init();
} else {
worker_thread_pool->init(worker_threads, low_priority_use_system_threads, low_property_ratio);
}
}
void register_core_singletons() {
@ -319,6 +335,7 @@ void register_core_singletons() {
Engine::get_singleton()->add_singleton(Engine::Singleton("Time", Time::get_singleton()));
Engine::get_singleton()->add_singleton(Engine::Singleton("NativeExtensionManager", NativeExtensionManager::get_singleton()));
Engine::get_singleton()->add_singleton(Engine::Singleton("ResourceUID", ResourceUID::get_singleton()));
Engine::get_singleton()->add_singleton(Engine::Singleton("WorkerThreadPool", worker_thread_pool));
}
void register_core_extensions() {
@ -350,6 +367,8 @@ void unregister_core_types() {
memdelete(_geometry_2d);
memdelete(_geometry_3d);
memdelete(worker_thread_pool);
ResourceLoader::remove_resource_format_loader(resource_format_image);
resource_format_image.unref();

1
core/templates/safe_refcount.h
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@ -111,6 +111,7 @@ public:
if (tmp >= p_value) {
return tmp; // already greater, or equal
}
if (value.compare_exchange_weak(tmp, p_value, std::memory_order_acq_rel)) {
return p_value;
}

2
doc/classes/@GlobalScope.xml
View file

@ -1222,6 +1222,8 @@
<member name="VisualScriptCustomNodes" type="VisualScriptCustomNodes" setter="" getter="">
The [VisualScriptCustomNodes] singleton.
</member>
<member name="WorkerThreadPool" type="WorkerThreadPool" setter="" getter="">
</member>
<member name="XRServer" type="XRServer" setter="" getter="">
The [XRServer] singleton.
</member>

6
doc/classes/ProjectSettings.xml
View file

@ -1986,6 +1986,12 @@
</member>
<member name="rendering/vulkan/staging_buffer/texture_upload_region_size_px" type="int" setter="" getter="" default="64">
</member>
<member name="threading/worker_pool/low_priority_thread_ratio" type="float" setter="" getter="" default="0.3">
</member>
<member name="threading/worker_pool/max_threads" type="int" setter="" getter="" default="-1">
</member>
<member name="threading/worker_pool/use_system_threads_for_low_priority_tasks" type="bool" setter="" getter="" default="true">
</member>
<member name="xr/openxr/default_action_map" type="String" setter="" getter="" default="&quot;res://openxr_action_map.tres&quot;">
Action map configuration to load by default.
</member>

53
doc/classes/WorkerThreadPool.xml Normal file
View file

@ -0,0 +1,53 @@
<?xml version="1.0" encoding="UTF-8" ?>
<class name="WorkerThreadPool" inherits="Object" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
<brief_description>
</brief_description>
<description>
</description>
<tutorials>
</tutorials>
<methods>
<method name="add_group_task">
<return type="int" />
<argument index="0" name="action" type="Callable" />
<argument index="1" name="elements" type="int" />
<argument index="2" name="tasks_needed" type="int" default="-1" />
<argument index="3" name="high_priority" type="bool" default="false" />
<argument index="4" name="description" type="String" default="&quot;&quot;" />
<description>
</description>
</method>
<method name="add_task">
<return type="int" />
<argument index="0" name="action" type="Callable" />
<argument index="1" name="high_priority" type="bool" default="false" />
<argument index="2" name="description" type="String" default="&quot;&quot;" />
<description>
</description>
</method>
<method name="is_group_task_completed" qualifiers="const">
<return type="bool" />
<argument index="0" name="group_id" type="int" />
<description>
</description>
</method>
<method name="is_task_completed" qualifiers="const">
<return type="bool" />
<argument index="0" name="task_id" type="int" />
<description>
</description>
</method>
<method name="wait_for_group_task_completion">
<return type="void" />
<argument index="0" name="group_id" type="int" />
<description>
</description>
</method>
<method name="wait_for_task_completion">
<return type="void" />
<argument index="0" name="task_id" type="int" />
<description>
</description>
</method>
</methods>
</class>

2
main/main.cpp
View file

@ -410,6 +410,8 @@ Error Main::test_setup() {
String("Please include this when reporting the bug on https://github.com/godotengine/godot/issues"));
GLOBAL_DEF_RST("rendering/occlusion_culling/bvh_build_quality", 2);
register_core_settings(); //here globals are present
translation_server = memnew(TranslationServer);
tsman = memnew(TextServerManager);

158
tests/core/threads/test_worker_thread_pool.h Normal file
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@ -0,0 +1,158 @@
/*************************************************************************/
/* test_worker_thread_pool.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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. */
/*************************************************************************/
#ifndef TEST_WORKER_THREAD_POOL_H
#define TEST_WORKER_THREAD_POOL_H
#include "core/object/worker_thread_pool.h"
#include "tests/test_macros.h"
namespace TestWorkerThreadPool {
int u32scmp(const char32_t *l, const char32_t *r) {
for (; *l == *r && *l && *r; l++, r++) {
// Continue.
}
return *l - *r;
}
static void static_test(void *p_arg) {
SafeNumeric<uint32_t> *counter = (SafeNumeric<uint32_t> *)p_arg;
counter->increment();
}
static SafeNumeric<uint32_t> callable_counter;
static void static_callable_test() {
callable_counter.increment();
}
TEST_CASE("[WorkerThreadPool] Process 256 threads using native task") {
const int count = 256;
SafeNumeric<uint32_t> counter;
WorkerThreadPool::TaskID tasks[count];
for (int i = 0; i < count; i++) {
tasks[i] = WorkerThreadPool::get_singleton()->add_native_task(static_test, &counter, true);
}
for (int i = 0; i < count; i++) {
WorkerThreadPool::get_singleton()->wait_for_task_completion(tasks[i]);
}
CHECK(counter.get() == count);
}
TEST_CASE("[WorkerThreadPool] Process 256 threads using native low priority") {
const int count = 256;
SafeNumeric<uint32_t> counter = SafeNumeric<uint32_t>(0);
WorkerThreadPool::TaskID tasks[count];
for (int i = 0; i < count; i++) {
tasks[i] = WorkerThreadPool::get_singleton()->add_native_task(static_test, &counter, false);
}
for (int i = 0; i < count; i++) {
WorkerThreadPool::get_singleton()->wait_for_task_completion(tasks[i]);
}
CHECK(counter.get() == count);
}
TEST_CASE("[WorkerThreadPool] Process 256 threads using callable") {
const int count = 256;
WorkerThreadPool::TaskID tasks[count];
callable_counter.set(0);
for (int i = 0; i < count; i++) {
tasks[i] = WorkerThreadPool::get_singleton()->add_task(callable_mp_static(static_callable_test), true);
}
for (int i = 0; i < count; i++) {
WorkerThreadPool::get_singleton()->wait_for_task_completion(tasks[i]);
}
CHECK(callable_counter.get() == count);
}
TEST_CASE("[WorkerThreadPool] Process 256 threads using callable low priority") {
const int count = 256;
WorkerThreadPool::TaskID tasks[count];
callable_counter.set(0);
for (int i = 0; i < count; i++) {
tasks[i] = WorkerThreadPool::get_singleton()->add_task(callable_mp_static(static_callable_test), false);
}
for (int i = 0; i < count; i++) {
WorkerThreadPool::get_singleton()->wait_for_task_completion(tasks[i]);
}
CHECK(callable_counter.get() == count);
}
static void static_group_test(void *p_arg, uint32_t p_index) {
SafeNumeric<uint32_t> *counter = (SafeNumeric<uint32_t> *)p_arg;
counter->exchange_if_greater(p_index);
}
TEST_CASE("[WorkerThreadPool] Process 256 elements on native task group") {
const int count = 256;
SafeNumeric<uint32_t> counter;
WorkerThreadPool::GroupID group = WorkerThreadPool::get_singleton()->add_native_group_task(static_group_test, &counter, count, -1, true);
WorkerThreadPool::get_singleton()->wait_for_group_task_completion(group);
CHECK(counter.get() == count - 1);
}
TEST_CASE("[WorkerThreadPool] Process 256 elements on native task group low priority") {
const int count = 256;
SafeNumeric<uint32_t> counter;
WorkerThreadPool::GroupID group = WorkerThreadPool::get_singleton()->add_native_group_task(static_group_test, &counter, count, -1, false);
WorkerThreadPool::get_singleton()->wait_for_group_task_completion(group);
CHECK(counter.get() == count - 1);
}
static SafeNumeric<uint32_t> callable_group_counter;
static void static_callable_group_test(uint32_t p_index) {
callable_group_counter.exchange_if_greater(p_index);
}
TEST_CASE("[WorkerThreadPool] Process 256 elements on native task group") {
const int count = 256;
WorkerThreadPool::GroupID group = WorkerThreadPool::get_singleton()->add_group_task(callable_mp_static(static_callable_group_test), count, -1, true);
WorkerThreadPool::get_singleton()->wait_for_group_task_completion(group);
CHECK(callable_group_counter.get() == count - 1);
}
TEST_CASE("[WorkerThreadPool] Process 256 elements on native task group low priority") {
const int count = 256;
callable_group_counter.set(0);
WorkerThreadPool::GroupID group = WorkerThreadPool::get_singleton()->add_group_task(callable_mp_static(static_callable_group_test), count, -1, false);
WorkerThreadPool::get_singleton()->wait_for_group_task_completion(group);
CHECK(callable_group_counter.get() == count - 1);
}
} // namespace TestWorkerThreadPool
#endif // TEST_WORKER_THREAD_POOL_H

1
tests/test_main.cpp
View file

@ -70,6 +70,7 @@
#include "tests/core/test_crypto.h"
#include "tests/core/test_hashing_context.h"
#include "tests/core/test_time.h"
#include "tests/core/threads/test_worker_thread_pool.h"
#include "tests/core/variant/test_array.h"
#include "tests/core/variant/test_dictionary.h"
#include "tests/core/variant/test_variant.h"