375 lines
11 KiB
C++
375 lines
11 KiB
C++
/*************************************************************************/
|
|
/* message_queue.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2021 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 "message_queue.h"
|
|
|
|
#include "core/config/project_settings.h"
|
|
#include "core/core_string_names.h"
|
|
#include "core/object/script_language.h"
|
|
|
|
MessageQueue *MessageQueue::singleton = nullptr;
|
|
|
|
MessageQueue *MessageQueue::get_singleton() {
|
|
return singleton;
|
|
}
|
|
|
|
Error MessageQueue::push_call(ObjectID p_id, const StringName &p_method, const Variant **p_args, int p_argcount, bool p_show_error) {
|
|
return push_callable(Callable(p_id, p_method), p_args, p_argcount, p_show_error);
|
|
}
|
|
|
|
Error MessageQueue::push_call(ObjectID p_id, const StringName &p_method, VARIANT_ARG_DECLARE) {
|
|
VARIANT_ARGPTRS;
|
|
|
|
int argc = 0;
|
|
|
|
for (int i = 0; i < VARIANT_ARG_MAX; i++) {
|
|
if (argptr[i]->get_type() == Variant::NIL) {
|
|
break;
|
|
}
|
|
argc++;
|
|
}
|
|
|
|
return push_call(p_id, p_method, argptr, argc, false);
|
|
}
|
|
|
|
Error MessageQueue::push_set(ObjectID p_id, const StringName &p_prop, const Variant &p_value) {
|
|
_THREAD_SAFE_METHOD_
|
|
|
|
uint8_t room_needed = sizeof(Message) + sizeof(Variant);
|
|
|
|
if ((buffer_end + room_needed) >= buffer_size) {
|
|
String type;
|
|
if (ObjectDB::get_instance(p_id)) {
|
|
type = ObjectDB::get_instance(p_id)->get_class();
|
|
}
|
|
print_line("Failed set: " + type + ":" + p_prop + " target ID: " + itos(p_id));
|
|
statistics();
|
|
ERR_FAIL_V_MSG(ERR_OUT_OF_MEMORY, "Message queue out of memory. Try increasing 'memory/limits/message_queue/max_size_kb' in project settings.");
|
|
}
|
|
|
|
Message *msg = memnew_placement(&buffer[buffer_end], Message);
|
|
msg->args = 1;
|
|
msg->callable = Callable(p_id, p_prop);
|
|
msg->type = TYPE_SET;
|
|
|
|
buffer_end += sizeof(Message);
|
|
|
|
Variant *v = memnew_placement(&buffer[buffer_end], Variant);
|
|
buffer_end += sizeof(Variant);
|
|
*v = p_value;
|
|
|
|
return OK;
|
|
}
|
|
|
|
Error MessageQueue::push_notification(ObjectID p_id, int p_notification) {
|
|
_THREAD_SAFE_METHOD_
|
|
|
|
ERR_FAIL_COND_V(p_notification < 0, ERR_INVALID_PARAMETER);
|
|
|
|
uint8_t room_needed = sizeof(Message);
|
|
|
|
if ((buffer_end + room_needed) >= buffer_size) {
|
|
print_line("Failed notification: " + itos(p_notification) + " target ID: " + itos(p_id));
|
|
statistics();
|
|
ERR_FAIL_V_MSG(ERR_OUT_OF_MEMORY, "Message queue out of memory. Try increasing 'memory/limits/message_queue/max_size_kb' in project settings.");
|
|
}
|
|
|
|
Message *msg = memnew_placement(&buffer[buffer_end], Message);
|
|
|
|
msg->type = TYPE_NOTIFICATION;
|
|
msg->callable = Callable(p_id, CoreStringNames::get_singleton()->notification); //name is meaningless but callable needs it
|
|
//msg->target;
|
|
msg->notification = p_notification;
|
|
|
|
buffer_end += sizeof(Message);
|
|
|
|
return OK;
|
|
}
|
|
|
|
Error MessageQueue::push_call(Object *p_object, const StringName &p_method, VARIANT_ARG_DECLARE) {
|
|
return push_call(p_object->get_instance_id(), p_method, VARIANT_ARG_PASS);
|
|
}
|
|
|
|
Error MessageQueue::push_notification(Object *p_object, int p_notification) {
|
|
return push_notification(p_object->get_instance_id(), p_notification);
|
|
}
|
|
|
|
Error MessageQueue::push_set(Object *p_object, const StringName &p_prop, const Variant &p_value) {
|
|
return push_set(p_object->get_instance_id(), p_prop, p_value);
|
|
}
|
|
|
|
Error MessageQueue::push_callable(const Callable &p_callable, const Variant **p_args, int p_argcount, bool p_show_error) {
|
|
_THREAD_SAFE_METHOD_
|
|
|
|
int room_needed = sizeof(Message) + sizeof(Variant) * p_argcount;
|
|
|
|
if ((buffer_end + room_needed) >= buffer_size) {
|
|
print_line("Failed method: " + p_callable);
|
|
statistics();
|
|
ERR_FAIL_V_MSG(ERR_OUT_OF_MEMORY, "Message queue out of memory. Try increasing 'memory/limits/message_queue/max_size_kb' in project settings.");
|
|
}
|
|
|
|
Message *msg = memnew_placement(&buffer[buffer_end], Message);
|
|
msg->args = p_argcount;
|
|
msg->callable = p_callable;
|
|
msg->type = TYPE_CALL;
|
|
if (p_show_error) {
|
|
msg->type |= FLAG_SHOW_ERROR;
|
|
}
|
|
|
|
buffer_end += sizeof(Message);
|
|
|
|
for (int i = 0; i < p_argcount; i++) {
|
|
Variant *v = memnew_placement(&buffer[buffer_end], Variant);
|
|
buffer_end += sizeof(Variant);
|
|
*v = *p_args[i];
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
Error MessageQueue::push_callable(const Callable &p_callable, VARIANT_ARG_DECLARE) {
|
|
VARIANT_ARGPTRS;
|
|
|
|
int argc = 0;
|
|
|
|
for (int i = 0; i < VARIANT_ARG_MAX; i++) {
|
|
if (argptr[i]->get_type() == Variant::NIL) {
|
|
break;
|
|
}
|
|
argc++;
|
|
}
|
|
|
|
return push_callable(p_callable, argptr, argc);
|
|
}
|
|
|
|
void MessageQueue::statistics() {
|
|
Map<StringName, int> set_count;
|
|
Map<int, int> notify_count;
|
|
Map<Callable, int> call_count;
|
|
int null_count = 0;
|
|
|
|
uint32_t read_pos = 0;
|
|
while (read_pos < buffer_end) {
|
|
Message *message = (Message *)&buffer[read_pos];
|
|
|
|
Object *target = message->callable.get_object();
|
|
|
|
if (target != nullptr) {
|
|
switch (message->type & FLAG_MASK) {
|
|
case TYPE_CALL: {
|
|
if (!call_count.has(message->callable)) {
|
|
call_count[message->callable] = 0;
|
|
}
|
|
|
|
call_count[message->callable]++;
|
|
|
|
} break;
|
|
case TYPE_NOTIFICATION: {
|
|
if (!notify_count.has(message->notification)) {
|
|
notify_count[message->notification] = 0;
|
|
}
|
|
|
|
notify_count[message->notification]++;
|
|
|
|
} break;
|
|
case TYPE_SET: {
|
|
StringName t = message->callable.get_method();
|
|
if (!set_count.has(t)) {
|
|
set_count[t] = 0;
|
|
}
|
|
|
|
set_count[t]++;
|
|
|
|
} break;
|
|
}
|
|
|
|
} else {
|
|
//object was deleted
|
|
print_line("Object was deleted while awaiting a callback");
|
|
|
|
null_count++;
|
|
}
|
|
|
|
read_pos += sizeof(Message);
|
|
if ((message->type & FLAG_MASK) != TYPE_NOTIFICATION) {
|
|
read_pos += sizeof(Variant) * message->args;
|
|
}
|
|
}
|
|
|
|
print_line("TOTAL BYTES: " + itos(buffer_end));
|
|
print_line("NULL count: " + itos(null_count));
|
|
|
|
for (const KeyValue<StringName, int> &E : set_count) {
|
|
print_line("SET " + E.key + ": " + itos(E.value));
|
|
}
|
|
|
|
for (const KeyValue<Callable, int> &E : call_count) {
|
|
print_line("CALL " + E.key + ": " + itos(E.value));
|
|
}
|
|
|
|
for (const KeyValue<int, int> &E : notify_count) {
|
|
print_line("NOTIFY " + itos(E.key) + ": " + itos(E.value));
|
|
}
|
|
}
|
|
|
|
int MessageQueue::get_max_buffer_usage() const {
|
|
return buffer_max_used;
|
|
}
|
|
|
|
void MessageQueue::_call_function(const Callable &p_callable, const Variant *p_args, int p_argcount, bool p_show_error) {
|
|
const Variant **argptrs = nullptr;
|
|
if (p_argcount) {
|
|
argptrs = (const Variant **)alloca(sizeof(Variant *) * p_argcount);
|
|
for (int i = 0; i < p_argcount; i++) {
|
|
argptrs[i] = &p_args[i];
|
|
}
|
|
}
|
|
|
|
Callable::CallError ce;
|
|
Variant ret;
|
|
p_callable.call(argptrs, p_argcount, ret, ce);
|
|
if (p_show_error && ce.error != Callable::CallError::CALL_OK) {
|
|
ERR_PRINT("Error calling deferred method: " + Variant::get_callable_error_text(p_callable, argptrs, p_argcount, ce) + ".");
|
|
}
|
|
}
|
|
|
|
void MessageQueue::flush() {
|
|
if (buffer_end > buffer_max_used) {
|
|
buffer_max_used = buffer_end;
|
|
}
|
|
|
|
uint32_t read_pos = 0;
|
|
|
|
//using reverse locking strategy
|
|
_THREAD_SAFE_LOCK_
|
|
|
|
if (flushing) {
|
|
_THREAD_SAFE_UNLOCK_
|
|
ERR_FAIL_COND(flushing); //already flushing, you did something odd
|
|
}
|
|
flushing = true;
|
|
|
|
while (read_pos < buffer_end) {
|
|
//lock on each iteration, so a call can re-add itself to the message queue
|
|
|
|
Message *message = (Message *)&buffer[read_pos];
|
|
|
|
uint32_t advance = sizeof(Message);
|
|
if ((message->type & FLAG_MASK) != TYPE_NOTIFICATION) {
|
|
advance += sizeof(Variant) * message->args;
|
|
}
|
|
|
|
//pre-advance so this function is reentrant
|
|
read_pos += advance;
|
|
|
|
_THREAD_SAFE_UNLOCK_
|
|
|
|
Object *target = message->callable.get_object();
|
|
|
|
if (target != nullptr) {
|
|
switch (message->type & FLAG_MASK) {
|
|
case TYPE_CALL: {
|
|
Variant *args = (Variant *)(message + 1);
|
|
|
|
// messages don't expect a return value
|
|
|
|
_call_function(message->callable, args, message->args, message->type & FLAG_SHOW_ERROR);
|
|
|
|
} break;
|
|
case TYPE_NOTIFICATION: {
|
|
// messages don't expect a return value
|
|
target->notification(message->notification);
|
|
|
|
} break;
|
|
case TYPE_SET: {
|
|
Variant *arg = (Variant *)(message + 1);
|
|
// messages don't expect a return value
|
|
target->set(message->callable.get_method(), *arg);
|
|
|
|
} break;
|
|
}
|
|
}
|
|
|
|
if ((message->type & FLAG_MASK) != TYPE_NOTIFICATION) {
|
|
Variant *args = (Variant *)(message + 1);
|
|
for (int i = 0; i < message->args; i++) {
|
|
args[i].~Variant();
|
|
}
|
|
}
|
|
|
|
message->~Message();
|
|
|
|
_THREAD_SAFE_LOCK_
|
|
}
|
|
|
|
buffer_end = 0; // reset buffer
|
|
flushing = false;
|
|
_THREAD_SAFE_UNLOCK_
|
|
}
|
|
|
|
bool MessageQueue::is_flushing() const {
|
|
return flushing;
|
|
}
|
|
|
|
MessageQueue::MessageQueue() {
|
|
ERR_FAIL_COND_MSG(singleton != nullptr, "A MessageQueue singleton already exists.");
|
|
singleton = this;
|
|
|
|
buffer_size = GLOBAL_DEF_RST("memory/limits/message_queue/max_size_kb", DEFAULT_QUEUE_SIZE_KB);
|
|
ProjectSettings::get_singleton()->set_custom_property_info("memory/limits/message_queue/max_size_kb", PropertyInfo(Variant::INT, "memory/limits/message_queue/max_size_kb", PROPERTY_HINT_RANGE, "1024,4096,1,or_greater"));
|
|
buffer_size *= 1024;
|
|
buffer = memnew_arr(uint8_t, buffer_size);
|
|
}
|
|
|
|
MessageQueue::~MessageQueue() {
|
|
uint32_t read_pos = 0;
|
|
|
|
while (read_pos < buffer_end) {
|
|
Message *message = (Message *)&buffer[read_pos];
|
|
Variant *args = (Variant *)(message + 1);
|
|
int argc = message->args;
|
|
if ((message->type & FLAG_MASK) != TYPE_NOTIFICATION) {
|
|
for (int i = 0; i < argc; i++) {
|
|
args[i].~Variant();
|
|
}
|
|
}
|
|
message->~Message();
|
|
|
|
read_pos += sizeof(Message);
|
|
if ((message->type & FLAG_MASK) != TYPE_NOTIFICATION) {
|
|
read_pos += sizeof(Variant) * message->args;
|
|
}
|
|
}
|
|
|
|
singleton = nullptr;
|
|
memdelete_arr(buffer);
|
|
}
|