440 lines
11 KiB
C++
440 lines
11 KiB
C++
/*************************************************************************/
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/* message_queue.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "message_queue.h"
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#include "globals.h"
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MessageQueue *MessageQueue::singleton=NULL;
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MessageQueue *MessageQueue::get_singleton() {
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return singleton;
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}
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Error MessageQueue::push_call(ObjectID p_id, const StringName& p_method, VARIANT_ARG_DECLARE) {
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_THREAD_SAFE_METHOD_
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uint8_t room_needed=sizeof(Message);
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int args=0;
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if (p_arg5.get_type()!=Variant::NIL)
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args=5;
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else if (p_arg4.get_type()!=Variant::NIL)
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args=4;
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else if (p_arg3.get_type()!=Variant::NIL)
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args=3;
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else if (p_arg2.get_type()!=Variant::NIL)
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args=2;
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else if (p_arg1.get_type()!=Variant::NIL)
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args=1;
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else
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args=0;
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room_needed+=sizeof(Variant)*args;
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if ((buffer_end+room_needed) >= buffer_size) {
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String type;
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if (ObjectDB::get_instance(p_id))
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type=ObjectDB::get_instance(p_id)->get_type();
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print_line("failed method: "+type+":"+p_method+" target ID: "+itos(p_id));
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statistics();
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}
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ERR_FAIL_COND_V( (buffer_end+room_needed) >= buffer_size , ERR_OUT_OF_MEMORY );
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Message * msg = memnew_placement( &buffer[ buffer_end ], Message );
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msg->args=args;
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msg->instance_ID=p_id;
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msg->target=p_method;
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msg->type=TYPE_CALL;
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buffer_end+=sizeof(Message);
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if (args>=1) {
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Variant * v = memnew_placement( &buffer[ buffer_end ], Variant );
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buffer_end+=sizeof(Variant);
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*v=p_arg1;
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}
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if (args>=2) {
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Variant * v = memnew_placement( &buffer[ buffer_end ], Variant );
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buffer_end+=sizeof(Variant);
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*v=p_arg2;
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}
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if (args>=3) {
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Variant * v = memnew_placement( &buffer[ buffer_end ], Variant );
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buffer_end+=sizeof(Variant);
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*v=p_arg3;
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}
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if (args>=4) {
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Variant * v = memnew_placement( &buffer[ buffer_end ], Variant );
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buffer_end+=sizeof(Variant);
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*v=p_arg4;
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}
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if (args>=5) {
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Variant * v = memnew_placement( &buffer[ buffer_end ], Variant );
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buffer_end+=sizeof(Variant);
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*v=p_arg5;
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}
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return OK;
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}
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Error MessageQueue::push_set(ObjectID p_id, const StringName& p_prop, const Variant& p_value) {
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_THREAD_SAFE_METHOD_
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uint8_t room_needed=sizeof(Message)+sizeof(Variant);
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if ((buffer_end+room_needed) >= buffer_size) {
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String type;
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if (ObjectDB::get_instance(p_id))
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type=ObjectDB::get_instance(p_id)->get_type();
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print_line("failed set: "+type+":"+p_prop+" target ID: "+itos(p_id));
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statistics();
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}
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ERR_FAIL_COND_V( (buffer_end+room_needed) >= buffer_size , ERR_OUT_OF_MEMORY );
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Message * msg = memnew_placement( &buffer[ buffer_end ], Message );
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msg->args=1;
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msg->instance_ID=p_id;
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msg->target=p_prop;
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msg->type=TYPE_SET;
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buffer_end+=sizeof(Message);
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Variant * v = memnew_placement( &buffer[ buffer_end ], Variant );
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buffer_end+=sizeof(Variant);
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*v=p_value;
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return OK;
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}
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Error MessageQueue::push_notification(ObjectID p_id, int p_notification) {
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_THREAD_SAFE_METHOD_
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ERR_FAIL_COND_V(p_notification<0, ERR_INVALID_PARAMETER );
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uint8_t room_needed=sizeof(Message);
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if ((buffer_end+room_needed) >= buffer_size) {
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String type;
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if (ObjectDB::get_instance(p_id))
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type=ObjectDB::get_instance(p_id)->get_type();
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print_line("failed notification: "+itos(p_notification)+" target ID: "+itos(p_id));
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statistics();
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}
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ERR_FAIL_COND_V( (buffer_end+room_needed) >= buffer_size , ERR_OUT_OF_MEMORY );
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Message * msg = memnew_placement( &buffer[ buffer_end ], Message );
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msg->type=TYPE_NOTIFICATION;
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msg->instance_ID=p_id;
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//msg->target;
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msg->notification=p_notification;
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buffer_end+=sizeof(Message);
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return OK;
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}
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Error MessageQueue::push_call(Object *p_object, const StringName& p_method, VARIANT_ARG_DECLARE) {
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return push_call(p_object->get_instance_ID(),p_method,VARIANT_ARG_PASS);
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}
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Error MessageQueue::push_notification(Object *p_object, int p_notification) {
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return push_notification(p_object->get_instance_ID(),p_notification);
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}
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Error MessageQueue::push_set(Object *p_object, const StringName& p_prop, const Variant& p_value) {
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return push_set(p_object->get_instance_ID(),p_prop,p_value);
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}
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void MessageQueue::statistics() {
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Map<StringName,int> set_count;
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Map<int,int> notify_count;
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Map<StringName,int> call_count;
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int null_count=0;
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uint32_t read_pos=0;
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while (read_pos < buffer_end ) {
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Message *message = (Message*)&buffer[ read_pos ];
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Object *target = ObjectDB::get_instance(message->instance_ID);
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if (target!=NULL) {
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switch(message->type) {
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case TYPE_CALL: {
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if (!call_count.has(message->target))
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call_count[message->target]=0;
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call_count[message->target]++;
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} break;
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case TYPE_NOTIFICATION: {
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if (!notify_count.has(message->notification))
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notify_count[message->notification]=0;
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notify_count[message->notification]++;
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} break;
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case TYPE_SET: {
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if (!set_count.has(message->target))
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set_count[message->target]=0;
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set_count[message->target]++;
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} break;
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}
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//object was deleted
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//WARN_PRINT("Object was deleted while awaiting a callback")
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//should it print a warning?
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} else {
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null_count++;
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}
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read_pos+=sizeof(Message);
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if (message->type!=TYPE_NOTIFICATION)
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read_pos+=sizeof(Variant)*message->args;
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}
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print_line("TOTAL BYTES: "+itos(buffer_end));
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print_line("NULL count: "+itos(null_count));
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for(Map<StringName,int>::Element *E=set_count.front();E;E=E->next()) {
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print_line("SET "+E->key()+": "+itos(E->get()));
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}
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for(Map<StringName,int>::Element *E=call_count.front();E;E=E->next()) {
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print_line("CALL "+E->key()+": "+itos(E->get()));
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}
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for(Map<int,int>::Element *E=notify_count.front();E;E=E->next()) {
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print_line("NOTIFY "+itos(E->key())+": "+itos(E->get()));
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}
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}
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bool MessageQueue::print() {
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#if 0
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uint32_t read_pos=0;
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while (read_pos < buffer_end ) {
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Message *message = (Message*)&buffer[ read_pos ];
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Object *target = ObjectDB::get_instance(message->instance_ID);
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String cname;
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String cfunc;
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if (target==NULL) {
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//object was deleted
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//WARN_PRINT("Object was deleted while awaiting a callback")
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//should it print a warning?
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} else if (message->notification>=0) {
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// messages don't expect a return value
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cfunc="notification # "+itos(message->notification);
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cname=target->get_type();
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} else if (!message->target.empty()) {
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cfunc="property: "+message->target;
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cname=target->get_type();
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} else if (message->target) {
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cfunc=String(message->target)+"()";
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cname=target->get_type();
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}
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read_pos+=sizeof(Message);
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if (message->type!=TYPE_NOTIFICATION)
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read_pos+=sizeof(Variant)*message->args;
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}
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#endif
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return false;
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}
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int MessageQueue::get_max_buffer_usage() const {
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return buffer_max_used;
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}
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void MessageQueue::flush() {
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if (buffer_max_used<buffer_end); {
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buffer_max_used=buffer_end;
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//statistics();
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}
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uint32_t read_pos=0;
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//using reverse locking strategy
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_THREAD_SAFE_LOCK_
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while (read_pos<buffer_end) {
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_THREAD_SAFE_UNLOCK_
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//lock on each interation, so a call can re-add itself to the message queue
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Message *message = (Message*)&buffer[ read_pos ];
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Object *target = ObjectDB::get_instance(message->instance_ID);
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if (target!=NULL) {
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switch(message->type) {
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case TYPE_CALL: {
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Variant *args= (Variant*)(message+1);
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// messages don't expect a return value
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target->call( message->target,
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(message->args>=1) ? args[0] : Variant(),
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(message->args>=2) ? args[1] : Variant(),
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(message->args>=3) ? args[2] : Variant(),
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(message->args>=4) ? args[3] : Variant(),
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(message->args>=5) ? args[4] : Variant() );
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for(int i=0;i<message->args;i++) {
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args[i].~Variant();
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}
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} break;
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case TYPE_NOTIFICATION: {
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// messages don't expect a return value
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target->notification(message->notification);
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} break;
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case TYPE_SET: {
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Variant *arg= (Variant*)(message+1);
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// messages don't expect a return value
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target->set(message->target,*arg);
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arg->~Variant();
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} break;
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}
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}
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uint32_t advance = sizeof(Message);
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if (message->type!=TYPE_NOTIFICATION)
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advance+=sizeof(Variant)*message->args;
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message->~Message();
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_THREAD_SAFE_LOCK_
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read_pos+=advance;
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}
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buffer_end=0; // reset buffer
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_THREAD_SAFE_UNLOCK_
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}
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MessageQueue::MessageQueue() {
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ERR_FAIL_COND(singleton!=NULL);
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singleton=this;
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buffer_end=0;
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buffer_max_used=0;
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buffer_size=GLOBAL_DEF( "core/message_queue_size_kb", DEFAULT_QUEUE_SIZE_KB );
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buffer_size*=1024;
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buffer = memnew_arr( uint8_t, buffer_size );
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}
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MessageQueue::~MessageQueue() {
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uint32_t read_pos=0;
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while (read_pos < buffer_end ) {
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Message *message = (Message*)&buffer[ read_pos ];
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Variant *args= (Variant*)(message+1);
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int argc = message->args;
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if (message->type!=TYPE_NOTIFICATION) {
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for (int i=0;i<argc;i++)
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args[i].~Variant();
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}
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message->~Message();
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read_pos+=sizeof(Message);
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if (message->type!=TYPE_NOTIFICATION)
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read_pos+=sizeof(Variant)*message->args;
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}
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singleton=NULL;
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memdelete_arr( buffer );
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}
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