c7bc44d5ad
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer with state-of-the-art rendering techniques tuned to work as low as middle end handheld devices - without compromising with the possibilities given for higher end desktop games of course. Great times ahead for the Godot community and the gamers that will play our games!
295 lines
8.0 KiB
C++
295 lines
8.0 KiB
C++
/*************************************************************************/
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/* ip.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) 2007-2017 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 "ip.h"
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#include "os/thread.h"
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#include "os/semaphore.h"
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#include "hash_map.h"
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VARIANT_ENUM_CAST(IP::ResolverStatus);
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VARIANT_ENUM_CAST(IP_Address::AddrType);
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/************* RESOLVER ******************/
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struct _IP_ResolverPrivate {
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struct QueueItem {
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volatile IP::ResolverStatus status;
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IP_Address response;
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String hostname;
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IP_Address::AddrType type;
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void clear() {
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status = IP::RESOLVER_STATUS_NONE;
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response = IP_Address();
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type = IP_Address::TYPE_NONE;
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hostname="";
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};
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QueueItem() {
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clear();
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};
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};
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QueueItem queue[IP::RESOLVER_MAX_QUERIES];
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IP::ResolverID find_empty_id() const {
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for(int i=0;i<IP::RESOLVER_MAX_QUERIES;i++) {
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if (queue[i].status==IP::RESOLVER_STATUS_NONE)
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return i;
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}
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return IP::RESOLVER_INVALID_ID;
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}
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Semaphore *sem;
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Thread* thread;
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//Semaphore* semaphore;
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bool thread_abort;
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void resolve_queues() {
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for(int i=0;i<IP::RESOLVER_MAX_QUERIES;i++) {
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if (queue[i].status!=IP::RESOLVER_STATUS_WAITING)
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continue;
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queue[i].response=IP::get_singleton()->resolve_hostname(queue[i].hostname, queue[i].type);
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if (queue[i].response.type==IP_Address::TYPE_NONE)
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queue[i].status=IP::RESOLVER_STATUS_ERROR;
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else
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queue[i].status=IP::RESOLVER_STATUS_DONE;
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}
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}
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static void _thread_function(void *self) {
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_IP_ResolverPrivate *ipr=(_IP_ResolverPrivate*)self;
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while(!ipr->thread_abort) {
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ipr->sem->wait();
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GLOBAL_LOCK_FUNCTION;
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ipr->resolve_queues();
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}
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}
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HashMap<String, IP_Address> cache;
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};
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IP_Address IP::resolve_hostname(const String& p_hostname, IP_Address::AddrType p_type) {
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GLOBAL_LOCK_FUNCTION;
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if (resolver->cache.has(p_hostname))
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if (resolver->cache[p_hostname].type & p_type != 0)
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return resolver->cache[p_hostname];
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// requested type is different from type in cache. continue resolution, if successful it'll overwrite cache
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IP_Address res = _resolve_hostname(p_hostname, p_type);
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resolver->cache[p_hostname]=res;
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return res;
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}
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IP::ResolverID IP::resolve_hostname_queue_item(const String& p_hostname, IP_Address::AddrType p_type) {
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GLOBAL_LOCK_FUNCTION;
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ResolverID id = resolver->find_empty_id();
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if (id==RESOLVER_INVALID_ID) {
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WARN_PRINT("Out of resolver queries");
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return id;
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}
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resolver->queue[id].hostname=p_hostname;
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resolver->queue[id].type = p_type;
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if (resolver->cache.has(p_hostname) && (resolver->cache[p_hostname].type & p_type) != 0) {
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resolver->queue[id].response=resolver->cache[p_hostname];
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resolver->queue[id].status=IP::RESOLVER_STATUS_DONE;
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} else {
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resolver->queue[id].response=IP_Address();
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resolver->queue[id].status=IP::RESOLVER_STATUS_WAITING;
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if (resolver->thread)
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resolver->sem->post();
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else
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resolver->resolve_queues();
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}
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return id;
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}
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IP::ResolverStatus IP::get_resolve_item_status(ResolverID p_id) const {
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ERR_FAIL_INDEX_V(p_id,IP::RESOLVER_MAX_QUERIES,IP::RESOLVER_STATUS_NONE);
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GLOBAL_LOCK_FUNCTION;
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ERR_FAIL_COND_V(resolver->queue[p_id].status==IP::RESOLVER_STATUS_NONE,IP::RESOLVER_STATUS_NONE);
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return resolver->queue[p_id].status;
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}
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IP_Address IP::get_resolve_item_address(ResolverID p_id) const {
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ERR_FAIL_INDEX_V(p_id,IP::RESOLVER_MAX_QUERIES,IP_Address());
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GLOBAL_LOCK_FUNCTION;
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if (resolver->queue[p_id].status!=IP::RESOLVER_STATUS_DONE) {
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ERR_EXPLAIN("Resolve of '"+resolver->queue[p_id].hostname+"'' didn't complete yet.");
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ERR_FAIL_COND_V(resolver->queue[p_id].status!=IP::RESOLVER_STATUS_DONE,IP_Address());
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}
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return resolver->queue[p_id].response;
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}
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void IP::erase_resolve_item(ResolverID p_id) {
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ERR_FAIL_INDEX(p_id,IP::RESOLVER_MAX_QUERIES);
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GLOBAL_LOCK_FUNCTION;
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resolver->queue[p_id].status=IP::RESOLVER_STATUS_NONE;
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}
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void IP::clear_cache(const String &p_hostname) {
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if (p_hostname.empty()) {
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resolver->cache.clear();
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} else {
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resolver->cache.erase(p_hostname);
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}
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};
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Array IP::_get_local_addresses() const {
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Array addresses;
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List<IP_Address> ip_addresses;
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get_local_addresses(&ip_addresses);
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for(List<IP_Address>::Element *E=ip_addresses.front();E;E=E->next()) {
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addresses.push_back(E->get());
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}
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return addresses;
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}
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void IP::_bind_methods() {
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ObjectTypeDB::bind_method(_MD("resolve_hostname","host","ip_type"),&IP::resolve_hostname,DEFVAL(IP_Address::TYPE_ANY));
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ObjectTypeDB::bind_method(_MD("resolve_hostname_queue_item","host","ip_type"),&IP::resolve_hostname_queue_item,DEFVAL(IP_Address::TYPE_ANY));
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ObjectTypeDB::bind_method(_MD("get_resolve_item_status","id"),&IP::get_resolve_item_status);
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ObjectTypeDB::bind_method(_MD("get_resolve_item_address","id"),&IP::get_resolve_item_address);
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ObjectTypeDB::bind_method(_MD("erase_resolve_item","id"),&IP::erase_resolve_item);
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ObjectTypeDB::bind_method(_MD("get_local_addresses"),&IP::_get_local_addresses);
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ObjectTypeDB::bind_method(_MD("clear_cache"),&IP::clear_cache, DEFVAL(""));
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BIND_CONSTANT( RESOLVER_STATUS_NONE );
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BIND_CONSTANT( RESOLVER_STATUS_WAITING );
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BIND_CONSTANT( RESOLVER_STATUS_DONE );
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BIND_CONSTANT( RESOLVER_STATUS_ERROR );
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BIND_CONSTANT( RESOLVER_MAX_QUERIES );
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BIND_CONSTANT( RESOLVER_INVALID_ID );
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}
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IP*IP::singleton=NULL;
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IP* IP::get_singleton() {
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return singleton;
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}
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IP* (*IP::_create)()=NULL;
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IP* IP::create() {
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ERR_FAIL_COND_V(singleton,NULL);
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ERR_FAIL_COND_V(!_create,NULL);
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return _create();
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}
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IP::IP() {
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singleton=this;
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resolver = memnew( _IP_ResolverPrivate );
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resolver->sem=NULL;
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#ifndef NO_THREADS
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//resolver->sem = Semaphore::create();
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resolver->sem=NULL;
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if (resolver->sem) {
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resolver->thread_abort=false;
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resolver->thread = Thread::create( _IP_ResolverPrivate::_thread_function,resolver );
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if (!resolver->thread)
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memdelete(resolver->sem); //wtf
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} else {
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resolver->thread=NULL;
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}
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#else
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resolver->sem = NULL;
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resolver->thread=NULL;
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#endif
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}
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IP::~IP() {
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#ifndef NO_THREADS
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if (resolver->thread) {
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resolver->thread_abort=true;
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resolver->sem->post();
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Thread::wait_to_finish(resolver->thread);
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memdelete( resolver->thread );
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memdelete( resolver->sem);
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}
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memdelete(resolver);
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#endif
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}
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