From 209ad8702634e72d8cb528d3df181e2300a31115 Mon Sep 17 00:00:00 2001 From: "madmaxoft@gmail.com" Date: Sat, 6 Jul 2013 19:43:13 +0000 Subject: BiomeVisualiser: Moved into the Tools folder git-svn-id: http://mc-server.googlecode.com/svn/trunk@1655 0a769ca7-a7f5-676a-18bf-c427514a06d6 --- BiomeVisualiser/BiomeCache.cpp | 333 ----------------------------------------- 1 file changed, 333 deletions(-) delete mode 100644 BiomeVisualiser/BiomeCache.cpp (limited to 'BiomeVisualiser/BiomeCache.cpp') diff --git a/BiomeVisualiser/BiomeCache.cpp b/BiomeVisualiser/BiomeCache.cpp deleted file mode 100644 index 12133b8b6..000000000 --- a/BiomeVisualiser/BiomeCache.cpp +++ /dev/null @@ -1,333 +0,0 @@ - -// BiomeCache.cpp - -// Implements the cBiomeCache class representing a biome source that caches data from the underlying biome source - -#include "Globals.h" -#include "BiomeCache.h" -#include "Timer.h" - - - - - -static int GetNumCores(void) -{ - // Get number of cores by querying the system process affinity mask - DWORD Affinity, ProcAffinity; - GetProcessAffinityMask(GetCurrentProcess(), &ProcAffinity, &Affinity); - int NumCores = 0; - while (Affinity > 0) - { - if ((Affinity & 1) == 1) - { - NumCores++; - } - Affinity >>= 1; - } // while (Affinity > 0) - return NumCores; -} - - - - - -cBiomeCache::cBiomeCache(void) : - m_Source(NULL), - m_BaseX(-100000), - m_BaseZ(-100000), - m_Available(NULL), - m_IsTerminatingThreads(false) -{ - int NumThreads = GetNumCores(); - NumThreads--; // One core should be left for the system to run on ;) - for (int i = NumThreads; i > 0; i--) - { - cThread * Thread = new cThread(*this); - m_Threads.push_back(Thread); - Thread->Start(); - } -} - - - - -cBiomeCache::~cBiomeCache() -{ - m_IsTerminatingThreads = true; - for (cThreads::iterator itr = m_Threads.begin(), end = m_Threads.end(); itr != end; ++itr) - { - m_evtQueued.Set(); - } - for (cThreads::iterator itr = m_Threads.begin(), end = m_Threads.end(); itr != end; ++itr) - { - delete *itr; - } - m_Threads.clear(); - - SetSource(NULL); -} - - - - - -cBiomeSource::eAvailability cBiomeCache::GetBiome(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_Biomes) -{ - if (m_Source == NULL) - { - return baNever; - } - - // Look up using the cache: - int x = a_ChunkX - m_BaseX; - int z = a_ChunkZ - m_BaseZ; - if ((x < 0) || (x >= m_Width) || (z < 0) || (z >= m_Height)) - { - // Outside the cached region - return baNever; - } - - cCSLock Lock(m_CS); - cItem * Item = m_Available[x + m_Width * z]; - if (Item == NULL) - { - // Item hasn't been processed yet - return baLater; - } - if (Item->m_IsValid) - { - memcpy(a_Biomes, Item->m_Biomes, sizeof(a_Biomes)); - return baNow; - } - - // Item has been processed, but the underlying source refused to give the data to us - return baNever; -} - - - - - -void cBiomeCache::HintViewArea(int a_MinChunkX, int a_MaxChunkX, int a_MinChunkZ, int a_MaxChunkZ) -{ - cTimer Timer("Cache: HintViewArea"); - - if ( - (a_MinChunkX == m_BaseX) && - (a_MaxChunkX == m_BaseX + m_Width - 1) && - (a_MinChunkZ == m_BaseZ) && - (a_MaxChunkZ == m_BaseZ + m_Height - 1) - ) - { - // The same set of parameters, bail out - return; - } - - if (m_Source != NULL) - { - m_Source->HintViewArea(a_MinChunkX, a_MaxChunkX, a_MinChunkZ, a_MaxChunkZ); - } - - int NewWidth = a_MaxChunkX - a_MinChunkX + 1; - int NewHeight = a_MaxChunkZ - a_MinChunkZ + 1; - - // Make a new empty cache table: - pItem * NewAvailable = new pItem[NewWidth * NewHeight]; - for (int i = NewWidth * NewHeight - 1; i >= 0; --i) - { - NewAvailable[i] = NULL; - } - - // Move the common contents of the old table into the new table: - cCSLock Lock(m_CS); - for (int z = 0; z < NewHeight; z++) - { - int OldZ = z + a_MinChunkZ - m_BaseZ; - if ((OldZ < 0) || (OldZ >= m_Height)) - { - continue; - } - for (int x = 0; x < NewWidth; x++) - { - int OldX = x + a_MinChunkX - m_BaseX; - if ((OldX < 0) || (OldX >= m_Width)) - { - continue; - } - NewAvailable[x + NewWidth * z] = m_Available[OldX + m_Width * OldZ]; - m_Available[OldX + m_Width * OldZ] = NULL; - } // for x - } // for z - - // All items that aren't common go into the pool: - for (int idx = 0, z = 0; z < m_Height; z++) - { - for (int x = 0; x < m_Width; ++x, ++idx) - { - if (m_Available[idx] != NULL) - { - m_Pool.push_back(m_Available[idx]); - m_Available[idx] = NULL; - } - } - } - - // Replace the cache table: - delete m_Available; - m_Available = NewAvailable; - m_Width = NewWidth; - m_Height = NewHeight; - m_BaseX = a_MinChunkX; - m_BaseZ = a_MinChunkZ; - - // Remove all items outside the coords: - FilterOutItems(m_Queue, a_MinChunkX, a_MaxChunkX, a_MinChunkZ, a_MaxChunkZ); - - // Queue all items from inside the coords into m_Queue: - for (int z = 0; z < NewHeight; z++) - { - for (int x = 0; x < NewWidth; x++) - { - if (m_Available[x + m_Width * z] != NULL) - { - // Already calculated, skip - continue; - } - - if (m_Pool.empty()) - { - m_Pool.push_back(new cItem(x + a_MinChunkX, z + a_MinChunkZ)); - } - ASSERT(!m_Pool.empty()); - m_Pool.back()->m_ChunkX = x + a_MinChunkX; - m_Pool.back()->m_ChunkZ = z + a_MinChunkZ; - m_Queue.push_back(m_Pool.back()); - m_Pool.pop_back(); - m_evtQueued.Set(); - } // for x - } // for z -} - - - - - -void cBiomeCache::SetSource(cBiomeSource * a_Source) -{ - // TODO: Stop all threads, so that they don't use the source anymore! - - delete m_Source; - m_Source = a_Source; - - // Invalidate cache contents: - cCSLock Lock(m_CS); - m_BaseX = -10000; - m_BaseZ = -10000; - m_Pool.splice(m_Pool.end(), m_Queue); -} - - - - - -void cBiomeCache::FilterOutItems(cItems & a_Items, int a_MinChunkX, int a_MaxChunkX, int a_MinChunkZ, int a_MaxChunkZ) -{ - for (cItems::iterator itr = a_Items.begin(); itr != a_Items.end();) - { - if ( - ((*itr)->m_ChunkX < a_MinChunkX) || - ((*itr)->m_ChunkX > a_MaxChunkX) || - ((*itr)->m_ChunkX < a_MinChunkX) || - ((*itr)->m_ChunkX > a_MaxChunkX) - ) - { - m_Pool.push_back(*itr); - itr = a_Items.erase(itr); - } - else - { - ++itr; - } - } -} - - - - - -void cBiomeCache::thrProcessQueueItem(void) -{ - cItem * Item = NULL; - { - cCSLock Lock(m_CS); - if (m_Queue.empty()) - { - cCSUnlock Unlock(Lock); - m_evtQueued.Wait(); - } - if (m_IsTerminatingThreads || m_Queue.empty()) - { - // We've been woken up only to die / spurious wakeup - return; - } - Item = m_Queue.back(); - m_Queue.pop_back(); - } - - // Process the item: - Item->m_IsValid = (m_Source->GetBiome(Item->m_ChunkX, Item->m_ChunkZ, Item->m_Biomes) == baNow); - - // Store result: - cCSLock Lock(m_CS); - int x = Item->m_ChunkX - m_BaseX; - int z = Item->m_ChunkZ - m_BaseZ; - if ((x < 0) || (x >= m_Width) || (z < 0) || (z >= m_Height)) - { - // The cache rectangle has changed under our fingers, drop this chunk - return; - } - m_Available[x + m_Width * z] = Item; -} - - - - - -/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// -// cBiomeCache::cItem: - -cBiomeCache::cItem::cItem(int a_ChunkX, int a_ChunkZ) : - m_ChunkX(a_ChunkX), - m_ChunkZ(a_ChunkZ) -{ -} - - - - - -/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// -// cBiomeCache::cThread: - -cBiomeCache::cThread::cThread(cBiomeCache & a_Parent) : - super("Biome cache thread"), - m_Parent(a_Parent) -{ -} - - - - - -void cBiomeCache::cThread::Execute(void) -{ - while (!m_ShouldTerminate && !m_Parent.m_IsTerminatingThreads) - { - m_Parent.thrProcessQueueItem(); - } -} - - - - -- cgit v1.2.3