74 if (_next ==
this)
return 0;
82 template<
class T, PtexLruItem T::*item>
92 _end.
push(&(node->*item));
100 static const T* dummy = 0;
101 static const std::ptrdiff_t itemOffset = (
const char*)&(dummy->*item) - (
const char*)dummy;
102 return it ? (T*) ((
char*)it - itemOffset) : 0;
131 :
PtexReader(premultiply, inputHandler, errorHandler), _cache(cache), _refCount(1),
132 _memUsedAccountedFor(0), _opensAccountedFor(0), _blockReadsAccountedFor(0)
176 _memUsedAccountedFor = memUsedTmp;
183 _opensAccountedFor = opensTmp;
190 _blockReadsAccountedFor = blockReadsTmp;
225 const char* cp = path;
227 const char* delim = strchr(cp,
':');
232 int len = int(delim-cp);
233 if (len)
_searchdirs.push_back(std::string(cp, len));
247 virtual void purge(
const char* );
249 virtual void getStats(Stats& stats);
void adjustMemUsed(size_t amount)
PtexReaderCache(int maxFiles, size_t maxMem, bool premultiply, PtexInputHandler *inputHandler, PtexErrorHandler *errorHandler)
virtual void release()
Release PtexCache. Cache will be immediately destroyed and all resources will be released.
PtexHashMap< StringKey, PtexCachedReader * > FileMap
virtual void getStats(Stats &stats)
Get stats.
File-handle and memory cache for reading ptex files.
void push(PtexLruItem *item)
PtexCachedReader(bool premultiply, PtexInputHandler *inputHandler, PtexErrorHandler *errorHandler, PtexReaderCache *cache)
virtual void setSearchPath(const char *path)
Set a search path for finding textures.
size_t _blockReadsAccountedFor
PtexLruItem _openFilesItem
bool findFile(const char *&filename, std::string &buffer, Ptex::String &error)
CACHE_LINE_PAD(_memUsed, size_t)
virtual const char * getSearchPath()
Query the search path.
bool tryPurge(size_t &memUsedChange)
Custom handler interface redirecting Ptex error messages.
std::vector< std::string > _searchdirs
void operator()(PtexCachedReader *reader)
PtexLruItem _activeFilesItem
void logRecentlyUsed(PtexCachedReader *reader)
static const int numMruFiles
size_t _memUsedAccountedFor
virtual void release()
Release resources held by this pointer (pointer becomes invalid).
Cache for reading Ptex texture files.
MruList *volatile _mruList
PtexLruList< PtexCachedReader,&PtexCachedReader::_openFilesItem > _openFiles
PtexLruList< PtexCachedReader,&PtexCachedReader::_activeFilesItem > _activeFiles
volatile size_t _filesOpen
Interface for reading data from a ptex file.
volatile int32_t _refCount
bool tryPrune(size_t &memUsedChange)
size_t getBlockReadsChange()
Contains PtexHashMap, a lightweight multi-threaded hash table.
void adjustFilesOpen(size_t amount)
size_t memUsedChangeTotal
virtual void purgeAll()
Remove all texture files from the cache.
virtual void purge(PtexTexture *)
Remove a texture file from the cache.
size_t _opensAccountedFor
size_t getMemUsedChange()
MruList *volatile _prevMruList
PtexCachedReader *volatile files[numMruFiles]
#define PTEX_NAMESPACE_END
volatile size_t _blockReads