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Use WorkerThreadPool for Server threads

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* Servers now use WorkerThreadPool for background computation.
* This helps keep the number of threads used fixed at all times.
* It also ensures everything works on HTML5 with threads.
* And makes it easier to support disabling threads for also HTML5.

CommandQueueMT now syncs with the servers via the WorkerThreadPool
yielding mechanism, which makes its classic main sync semaphore
superfluous.

Also, some warnings about calls that kill performance when using
threaded rendering are removed because there's a mechanism that
warns about that in a more general fashion.

Co-authored-by: Pedro J. Estébanez <pedrojrulez@gmail.com>
This commit is contained in:
Juan Linietsky
2024-04-04 10:18:08 +02:00
committed by Pedro J. Estébanez
parent c28f5901c7
commit 65686dedf9
15 changed files with 208 additions and 204 deletions
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48
servers/physics_server_3d_wrap_mt.cpp
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@@ -41,22 +41,15 @@ void PhysicsServer3DWrapMT::thread_step(real_t p_delta) {
step_sem.post();
}
void PhysicsServer3DWrapMT::_thread_callback(void *_instance) {
PhysicsServer3DWrapMT *vsmt = reinterpret_cast<PhysicsServer3DWrapMT *>(_instance);
vsmt->thread_loop();
}
void PhysicsServer3DWrapMT::thread_loop() {
server_thread = Thread::get_caller_id();
physics_server_3d->init();
exit = false;
step_thread_up = true;
command_queue.set_pump_task_id(server_task_id);
while (!exit) {
// flush commands one by one, until exit is requested
command_queue.wait_and_flush();
WorkerThreadPool::get_singleton()->yield();
command_queue.flush_all();
}
command_queue.flush_all(); // flush all
@@ -70,18 +63,14 @@ void PhysicsServer3DWrapMT::step(real_t p_step) {
if (create_thread) {
command_queue.push(this, &PhysicsServer3DWrapMT::thread_step, p_step);
} else {
command_queue.flush_all(); //flush all pending from other threads
command_queue.flush_all(); // Flush all pending from other threads.
physics_server_3d->step(p_step);
}
}
void PhysicsServer3DWrapMT::sync() {
if (create_thread) {
if (first_frame) {
first_frame = false;
} else {
step_sem.wait(); //must not wait if a step was not issued
}
step_sem.wait();
}
physics_server_3d->sync();
}
@@ -96,39 +85,34 @@ void PhysicsServer3DWrapMT::end_sync() {
void PhysicsServer3DWrapMT::init() {
if (create_thread) {
thread.start(_thread_callback, this);
while (!step_thread_up) {
OS::get_singleton()->delay_usec(1000);
}
exit = false;
server_task_id = WorkerThreadPool::get_singleton()->add_task(callable_mp(this, &PhysicsServer3DWrapMT::thread_loop), true);
step_sem.post();
} else {
physics_server_3d->init();
}
}
void PhysicsServer3DWrapMT::finish() {
if (thread.is_started()) {
if (create_thread) {
command_queue.push(this, &PhysicsServer3DWrapMT::thread_exit);
thread.wait_to_finish();
if (server_task_id != WorkerThreadPool::INVALID_TASK_ID) {
WorkerThreadPool::get_singleton()->wait_for_task_completion(server_task_id);
server_task_id = WorkerThreadPool::INVALID_TASK_ID;
}
} else {
physics_server_3d->finish();
}
}
PhysicsServer3DWrapMT::PhysicsServer3DWrapMT(PhysicsServer3D *p_contained, bool p_create_thread) :
command_queue(p_create_thread) {
PhysicsServer3DWrapMT::PhysicsServer3DWrapMT(PhysicsServer3D *p_contained, bool p_create_thread) {
physics_server_3d = p_contained;
create_thread = p_create_thread;
if (!p_create_thread) {
server_thread = Thread::get_caller_id();
} else {
server_thread = 0;
if (!create_thread) {
server_thread = Thread::MAIN_ID;
}
main_thread = Thread::get_caller_id();
}
PhysicsServer3DWrapMT::~PhysicsServer3DWrapMT() {
memdelete(physics_server_3d);
//finish();
}