92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file bamCacheIndex.h
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* @author drose
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* @date 2006-06-19
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*/
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#ifndef BAMCACHEINDEX_H
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#define BAMCACHEINDEX_H
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#include "pandabase.h"
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#include "bamCacheRecord.h"
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#include "pointerTo.h"
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#include "filename.h"
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#include "typedWritable.h"
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#include "linkedListNode.h"
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#include "pmap.h"
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#include "pvector.h"
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/**
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* This represents the in-memory index that records the list of files stored
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* in the BamCache. Since the memory is also flushed to disk from time to
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* time, this class is a TypedWritable object.
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*
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* For the most part, this class is used only by the BamCache class.
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*/
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class EXPCL_PANDA_PUTIL BamCacheIndex : public TypedWritable, public LinkedListNode {
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private:
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INLINE BamCacheIndex();
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~BamCacheIndex();
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public:
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void write(std::ostream &out, int indent_level = 0) const;
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private:
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void process_new_records();
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void release_records();
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PT(BamCacheRecord) evict_old_file();
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bool add_record(BamCacheRecord *record);
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bool remove_record(const Filename &source_pathname);
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private:
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typedef pmap<Filename, PT(BamCacheRecord) > Records;
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Records _records;
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std::streamsize _cache_size;
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// This structure is a temporary container. It is only filled in while
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// reading from a bam file.
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typedef pvector< PT(BamCacheRecord) > RecordVector;
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RecordVector _record_vector;
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public:
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static void register_with_read_factory();
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virtual void write_datagram(BamWriter *manager, Datagram &dg);
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protected:
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static TypedWritable *make_from_bam(const FactoryParams ¶ms);
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virtual int complete_pointers(TypedWritable **plist, BamReader *manager);
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void fillin(DatagramIterator &scan, BamReader *manager);
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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TypedWritable::init_type();
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register_type(_type_handle, "BamCacheIndex",
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TypedWritable::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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friend class BamCache;
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};
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#include "bamCacheIndex.I"
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#endif
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