mirror of
https://github.com/moparisthebest/minetest
synced 2024-11-07 09:55:09 -05:00
580 lines
16 KiB
C++
580 lines
16 KiB
C++
/*
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Minetest
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Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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Copyright (C) 2010-2013 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "emerge.h"
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#include "server.h"
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#include <iostream>
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#include <queue>
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#include "map.h"
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#include "environment.h"
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#include "util/container.h"
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#include "util/thread.h"
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#include "main.h"
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#include "constants.h"
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#include "voxel.h"
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#include "config.h"
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#include "mapblock.h"
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#include "serverobject.h"
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#include "settings.h"
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#include "scripting_game.h"
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#include "profiler.h"
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#include "log.h"
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#include "nodedef.h"
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#include "biome.h"
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#include "mapgen_v6.h"
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#include "mapgen_v7.h"
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#include "mapgen_indev.h"
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#include "mapgen_singlenode.h"
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#include "mapgen_math.h"
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class EmergeThread : public SimpleThread
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{
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public:
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Server *m_server;
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ServerMap *map;
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EmergeManager *emerge;
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Mapgen *mapgen;
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bool enable_mapgen_debug_info;
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int id;
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Event qevent;
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std::queue<v3s16> blockqueue;
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EmergeThread(Server *server, int ethreadid):
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SimpleThread(),
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m_server(server),
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map(NULL),
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emerge(NULL),
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mapgen(NULL),
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id(ethreadid)
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{
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}
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void *Thread();
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void trigger()
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{
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setRun(true);
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if(IsRunning() == false)
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{
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Start();
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}
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}
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bool popBlockEmerge(v3s16 *pos, u8 *flags);
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bool getBlockOrStartGen(v3s16 p, MapBlock **b,
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BlockMakeData *data, bool allow_generate);
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};
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/////////////////////////////// Emerge Manager ////////////////////////////////
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EmergeManager::EmergeManager(IGameDef *gamedef) {
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//register built-in mapgens
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registerMapgen("v6", new MapgenFactoryV6());
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registerMapgen("v7", new MapgenFactoryV7());
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registerMapgen("indev", new MapgenFactoryIndev());
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registerMapgen("singlenode", new MapgenFactorySinglenode());
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registerMapgen("math", new MapgenFactoryMath());
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this->ndef = gamedef->getNodeDefManager();
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this->biomedef = new BiomeDefManager();
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this->params = NULL;
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this->luaoverride_params = NULL;
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this->luaoverride_params_modified = 0;
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this->luaoverride_flagmask = 0;
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mapgen_debug_info = g_settings->getBool("enable_mapgen_debug_info");
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queuemutex.Init();
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int nthreads;
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if (g_settings->get("num_emerge_threads").empty()) {
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int nprocs = porting::getNumberOfProcessors();
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// leave a proc for the main thread and one for some other misc threads
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nthreads = (nprocs > 2) ? nprocs - 2 : 1;
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} else {
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nthreads = g_settings->getU16("num_emerge_threads");
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}
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if (nthreads < 1)
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nthreads = 1;
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qlimit_total = g_settings->getU16("emergequeue_limit_total");
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qlimit_diskonly = g_settings->get("emergequeue_limit_diskonly").empty() ?
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nthreads * 5 + 1 :
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g_settings->getU16("emergequeue_limit_diskonly");
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qlimit_generate = g_settings->get("emergequeue_limit_generate").empty() ?
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nthreads + 1 :
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g_settings->getU16("emergequeue_limit_generate");
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for (int i = 0; i != nthreads; i++)
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emergethread.push_back(new EmergeThread((Server *)gamedef, i));
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infostream << "EmergeManager: using " << nthreads << " threads" << std::endl;
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}
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EmergeManager::~EmergeManager() {
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for (unsigned int i = 0; i != emergethread.size(); i++) {
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emergethread[i]->setRun(false);
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emergethread[i]->qevent.signal();
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emergethread[i]->stop();
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delete emergethread[i];
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delete mapgen[i];
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}
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emergethread.clear();
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mapgen.clear();
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for (unsigned int i = 0; i < ores.size(); i++)
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delete ores[i];
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ores.clear();
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for (unsigned int i = 0; i < decorations.size(); i++)
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delete decorations[i];
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decorations.clear();
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for (std::map<std::string, MapgenFactory *>::iterator iter = mglist.begin();
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iter != mglist.end(); iter ++) {
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delete iter->second;
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}
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mglist.clear();
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delete biomedef;
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}
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void EmergeManager::initMapgens(MapgenParams *mgparams) {
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Mapgen *mg;
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if (mapgen.size())
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return;
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// Resolve names of nodes for things that were registered
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// (at this point, the registration period is over)
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biomedef->resolveNodeNames(ndef);
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for (size_t i = 0; i != ores.size(); i++)
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ores[i]->resolveNodeNames(ndef);
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for (size_t i = 0; i != decorations.size(); i++)
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decorations[i]->resolveNodeNames(ndef);
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// Apply mapgen parameter overrides from Lua
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if (luaoverride_params) {
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if (luaoverride_params_modified & MGPARAMS_SET_MGNAME)
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mgparams->mg_name = luaoverride_params->mg_name;
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if (luaoverride_params_modified & MGPARAMS_SET_SEED)
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mgparams->seed = luaoverride_params->seed;
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if (luaoverride_params_modified & MGPARAMS_SET_WATER_LEVEL)
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mgparams->water_level = luaoverride_params->water_level;
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if (luaoverride_params_modified & MGPARAMS_SET_FLAGS) {
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mgparams->flags &= ~luaoverride_flagmask;
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mgparams->flags |= luaoverride_params->flags;
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}
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delete luaoverride_params;
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luaoverride_params = NULL;
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}
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// Create the mapgens
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this->params = mgparams;
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for (size_t i = 0; i != emergethread.size(); i++) {
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mg = createMapgen(params->mg_name, 0, params);
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if (!mg) {
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infostream << "EmergeManager: falling back to mapgen v6" << std::endl;
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delete params;
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params = createMapgenParams("v6");
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mg = createMapgen("v6", 0, params);
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}
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mapgen.push_back(mg);
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}
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}
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Mapgen *EmergeManager::getCurrentMapgen() {
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for (unsigned int i = 0; i != emergethread.size(); i++) {
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if (emergethread[i]->IsSameThread())
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return emergethread[i]->mapgen;
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}
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return NULL;
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}
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void EmergeManager::triggerAllThreads() {
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for (unsigned int i = 0; i != emergethread.size(); i++)
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emergethread[i]->trigger();
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}
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bool EmergeManager::enqueueBlockEmerge(u16 peer_id, v3s16 p, bool allow_generate) {
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std::map<v3s16, BlockEmergeData *>::const_iterator iter;
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BlockEmergeData *bedata;
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u16 count;
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u8 flags = 0;
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int idx = 0;
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if (allow_generate)
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flags |= BLOCK_EMERGE_ALLOWGEN;
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{
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JMutexAutoLock queuelock(queuemutex);
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count = blocks_enqueued.size();
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if (count >= qlimit_total)
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return false;
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count = peer_queue_count[peer_id];
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u16 qlimit_peer = allow_generate ? qlimit_generate : qlimit_diskonly;
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if (count >= qlimit_peer)
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return false;
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iter = blocks_enqueued.find(p);
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if (iter != blocks_enqueued.end()) {
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bedata = iter->second;
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bedata->flags |= flags;
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return true;
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}
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bedata = new BlockEmergeData;
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bedata->flags = flags;
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bedata->peer_requested = peer_id;
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blocks_enqueued.insert(std::make_pair(p, bedata));
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peer_queue_count[peer_id] = count + 1;
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// insert into the EmergeThread queue with the least items
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int lowestitems = emergethread[0]->blockqueue.size();
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for (unsigned int i = 1; i != emergethread.size(); i++) {
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int nitems = emergethread[i]->blockqueue.size();
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if (nitems < lowestitems) {
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idx = i;
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lowestitems = nitems;
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}
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}
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emergethread[idx]->blockqueue.push(p);
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}
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emergethread[idx]->qevent.signal();
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return true;
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}
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int EmergeManager::getGroundLevelAtPoint(v2s16 p) {
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if (mapgen.size() == 0 || !mapgen[0]) {
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errorstream << "EmergeManager: getGroundLevelAtPoint() called"
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" before mapgen initialized" << std::endl;
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return 0;
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}
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return mapgen[0]->getGroundLevelAtPoint(p);
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}
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bool EmergeManager::isBlockUnderground(v3s16 blockpos) {
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/*
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v2s16 p = v2s16((blockpos.X * MAP_BLOCKSIZE) + MAP_BLOCKSIZE / 2,
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(blockpos.Y * MAP_BLOCKSIZE) + MAP_BLOCKSIZE / 2);
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int ground_level = getGroundLevelAtPoint(p);
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return blockpos.Y * (MAP_BLOCKSIZE + 1) <= min(water_level, ground_level);
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*/
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//yuck, but then again, should i bother being accurate?
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//the height of the nodes in a single block is quite variable
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return blockpos.Y * (MAP_BLOCKSIZE + 1) <= params->water_level;
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}
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u32 EmergeManager::getBlockSeed(v3s16 p) {
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return (u32)(params->seed & 0xFFFFFFFF) +
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p.Z * 38134234 +
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p.Y * 42123 +
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p.X * 23;
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}
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Mapgen *EmergeManager::createMapgen(std::string mgname, int mgid,
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MapgenParams *mgparams) {
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std::map<std::string, MapgenFactory *>::const_iterator iter;
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iter = mglist.find(mgname);
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if (iter == mglist.end()) {
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errorstream << "EmergeManager; mapgen " << mgname <<
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" not registered" << std::endl;
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return NULL;
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}
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MapgenFactory *mgfactory = iter->second;
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return mgfactory->createMapgen(mgid, mgparams, this);
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}
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MapgenParams *EmergeManager::createMapgenParams(std::string mgname) {
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std::map<std::string, MapgenFactory *>::const_iterator iter;
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iter = mglist.find(mgname);
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if (iter == mglist.end()) {
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errorstream << "EmergeManager: mapgen " << mgname <<
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" not registered" << std::endl;
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return NULL;
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}
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MapgenFactory *mgfactory = iter->second;
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return mgfactory->createMapgenParams();
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}
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MapgenParams *EmergeManager::getParamsFromSettings(Settings *settings) {
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std::string mg_name = settings->get("mg_name");
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MapgenParams *mgparams = createMapgenParams(mg_name);
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if (!mgparams)
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return NULL;
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mgparams->mg_name = mg_name;
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mgparams->seed = settings->getU64(settings == g_settings ? "fixed_map_seed" : "seed");
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mgparams->water_level = settings->getS16("water_level");
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mgparams->chunksize = settings->getS16("chunksize");
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mgparams->flags = settings->getFlagStr("mg_flags", flagdesc_mapgen);
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if (!mgparams->readParams(settings)) {
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delete mgparams;
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return NULL;
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}
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return mgparams;
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}
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void EmergeManager::setParamsToSettings(Settings *settings) {
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settings->set("mg_name", params->mg_name);
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settings->setU64("seed", params->seed);
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settings->setS16("water_level", params->water_level);
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settings->setS16("chunksize", params->chunksize);
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settings->setFlagStr("mg_flags", params->flags, flagdesc_mapgen);
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params->writeParams(settings);
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}
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void EmergeManager::registerMapgen(std::string mgname, MapgenFactory *mgfactory) {
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mglist.insert(std::make_pair(mgname, mgfactory));
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infostream << "EmergeManager: registered mapgen " << mgname << std::endl;
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}
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////////////////////////////// Emerge Thread //////////////////////////////////
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bool EmergeThread::popBlockEmerge(v3s16 *pos, u8 *flags) {
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std::map<v3s16, BlockEmergeData *>::iterator iter;
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JMutexAutoLock queuelock(emerge->queuemutex);
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if (blockqueue.empty())
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return false;
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v3s16 p = blockqueue.front();
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blockqueue.pop();
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*pos = p;
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iter = emerge->blocks_enqueued.find(p);
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if (iter == emerge->blocks_enqueued.end())
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return false; //uh oh, queue and map out of sync!!
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BlockEmergeData *bedata = iter->second;
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*flags = bedata->flags;
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emerge->peer_queue_count[bedata->peer_requested]--;
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delete bedata;
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emerge->blocks_enqueued.erase(iter);
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return true;
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}
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bool EmergeThread::getBlockOrStartGen(v3s16 p, MapBlock **b,
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BlockMakeData *data, bool allow_gen) {
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v2s16 p2d(p.X, p.Z);
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//envlock: usually takes <=1ms, sometimes 90ms or ~400ms to acquire
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JMutexAutoLock envlock(m_server->m_env_mutex);
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// Load sector if it isn't loaded
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if (map->getSectorNoGenerateNoEx(p2d) == NULL)
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map->loadSectorMeta(p2d);
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// Attempt to load block
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MapBlock *block = map->getBlockNoCreateNoEx(p);
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if (!block || block->isDummy() || !block->isGenerated()) {
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EMERGE_DBG_OUT("not in memory, attempting to load from disk");
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block = map->loadBlock(p);
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}
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// If could not load and allowed to generate,
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// start generation inside this same envlock
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if (allow_gen && (block == NULL || !block->isGenerated())) {
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EMERGE_DBG_OUT("generating");
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*b = block;
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return map->initBlockMake(data, p);
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}
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*b = block;
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return false;
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}
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void *EmergeThread::Thread() {
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ThreadStarted();
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log_register_thread("EmergeThread" + itos(id));
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DSTACK(__FUNCTION_NAME);
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BEGIN_DEBUG_EXCEPTION_HANDLER
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v3s16 last_tried_pos(-32768,-32768,-32768); // For error output
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v3s16 p;
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u8 flags;
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map = (ServerMap *)&(m_server->m_env->getMap());
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emerge = m_server->m_emerge;
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mapgen = emerge->mapgen[id];
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enable_mapgen_debug_info = emerge->mapgen_debug_info;
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while (getRun())
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try {
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if (!popBlockEmerge(&p, &flags)) {
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qevent.wait();
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continue;
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}
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last_tried_pos = p;
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if (blockpos_over_limit(p))
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continue;
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bool allow_generate = flags & BLOCK_EMERGE_ALLOWGEN;
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EMERGE_DBG_OUT("p=" PP(p) " allow_generate=" << allow_generate);
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/*
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Try to fetch block from memory or disk.
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If not found and asked to generate, initialize generator.
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*/
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BlockMakeData data;
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MapBlock *block = NULL;
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std::map<v3s16, MapBlock *> modified_blocks;
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if (getBlockOrStartGen(p, &block, &data, allow_generate)) {
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{
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ScopeProfiler sp(g_profiler, "EmergeThread: Mapgen::makeChunk", SPT_AVG);
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TimeTaker t("mapgen::make_block()");
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mapgen->makeChunk(&data);
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if (enable_mapgen_debug_info == false)
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t.stop(true); // Hide output
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}
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{
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//envlock: usually 0ms, but can take either 30 or 400ms to acquire
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JMutexAutoLock envlock(m_server->m_env_mutex);
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ScopeProfiler sp(g_profiler, "EmergeThread: after "
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"Mapgen::makeChunk (envlock)", SPT_AVG);
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map->finishBlockMake(&data, modified_blocks);
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block = map->getBlockNoCreateNoEx(p);
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if (block) {
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/*
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Do some post-generate stuff
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*/
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v3s16 minp = data.blockpos_min * MAP_BLOCKSIZE;
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v3s16 maxp = data.blockpos_max * MAP_BLOCKSIZE +
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v3s16(1,1,1) * (MAP_BLOCKSIZE - 1);
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// Ignore map edit events, they will not need to be sent
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// to anybody because the block hasn't been sent to anybody
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MapEditEventAreaIgnorer
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ign(&m_server->m_ignore_map_edit_events_area,
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VoxelArea(minp, maxp));
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{ // takes about 90ms with -O1 on an e3-1230v2
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m_server->getScriptIface()->
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environment_OnGenerated(
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minp, maxp, emerge->getBlockSeed(minp));
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}
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EMERGE_DBG_OUT("ended up with: " << analyze_block(block));
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m_server->m_env->activateBlock(block, 0);
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}
|
|
}
|
|
}
|
|
|
|
/*
|
|
Set sent status of modified blocks on clients
|
|
*/
|
|
|
|
// NOTE: Server's clients are also behind the connection mutex
|
|
//conlock: consistently takes 30-40ms to acquire
|
|
JMutexAutoLock lock(m_server->m_con_mutex);
|
|
// Add the originally fetched block to the modified list
|
|
if (block)
|
|
modified_blocks[p] = block;
|
|
|
|
// Update weather data in mapblock
|
|
for(std::map<v3s16, MapBlock *>::iterator
|
|
i = modified_blocks.begin();
|
|
i != modified_blocks.end(); ++i) {
|
|
map->getHeat(m_server->m_env, MAP_BLOCKSIZE*i->first ,i->second);
|
|
map->getHumidity(m_server->m_env, MAP_BLOCKSIZE*i->first, i->second);
|
|
}
|
|
|
|
// Set the modified blocks unsent for all the clients
|
|
for (std::map<u16, RemoteClient*>::iterator
|
|
i = m_server->m_clients.begin();
|
|
i != m_server->m_clients.end(); ++i) {
|
|
RemoteClient *client = i->second;
|
|
if (modified_blocks.size() > 0) {
|
|
// Remove block from sent history
|
|
client->SetBlocksNotSent(modified_blocks);
|
|
}
|
|
}
|
|
}
|
|
catch (VersionMismatchException &e) {
|
|
std::ostringstream err;
|
|
err << "World data version mismatch in MapBlock "<<PP(last_tried_pos)<<std::endl;
|
|
err << "----"<<std::endl;
|
|
err << "\""<<e.what()<<"\""<<std::endl;
|
|
err << "See debug.txt."<<std::endl;
|
|
err << "World probably saved by a newer version of Minetest."<<std::endl;
|
|
m_server->setAsyncFatalError(err.str());
|
|
}
|
|
catch (SerializationError &e) {
|
|
std::ostringstream err;
|
|
err << "Invalid data in MapBlock "<<PP(last_tried_pos)<<std::endl;
|
|
err << "----"<<std::endl;
|
|
err << "\""<<e.what()<<"\""<<std::endl;
|
|
err << "See debug.txt."<<std::endl;
|
|
err << "You can ignore this using [ignore_world_load_errors = true]."<<std::endl;
|
|
m_server->setAsyncFatalError(err.str());
|
|
}
|
|
|
|
END_DEBUG_EXCEPTION_HANDLER(errorstream)
|
|
log_deregister_thread();
|
|
return NULL;
|
|
}
|