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00015 #ifndef BAMCACHE_H
00016 #define BAMCACHE_H
00017
00018 #include "pandabase.h"
00019 #include "bamCacheRecord.h"
00020 #include "pointerTo.h"
00021 #include "filename.h"
00022 #include "pmap.h"
00023 #include "pvector.h"
00024 #include "reMutex.h"
00025 #include "reMutexHolder.h"
00026
00027 #include <time.h>
00028
00029 class BamCacheIndex;
00030
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00046
00047 class EXPCL_PANDA_PUTIL BamCache {
00048 PUBLISHED:
00049 BamCache();
00050 ~BamCache();
00051
00052 INLINE void set_active(bool flag);
00053 INLINE bool get_active() const;
00054
00055 INLINE void set_cache_models(bool flag);
00056 INLINE bool get_cache_models() const;
00057
00058 INLINE void set_cache_textures(bool flag);
00059 INLINE bool get_cache_textures() const;
00060
00061 INLINE void set_cache_compressed_textures(bool flag);
00062 INLINE bool get_cache_compressed_textures() const;
00063
00064 void set_root(const Filename &root);
00065 INLINE Filename get_root() const;
00066
00067 INLINE void set_flush_time(int flush_time);
00068 INLINE int get_flush_time() const;
00069
00070 INLINE void set_cache_max_kbytes(int max_kbytes);
00071 INLINE int get_cache_max_kbytes() const;
00072
00073 INLINE void set_read_only(bool ro);
00074 INLINE bool get_read_only() const;
00075
00076 PT(BamCacheRecord) lookup(const Filename &source_filename,
00077 const string &cache_extension);
00078 bool store(BamCacheRecord *record);
00079
00080 void consider_flush_index();
00081 void flush_index();
00082
00083 INLINE static BamCache *get_global_ptr();
00084
00085 private:
00086 void read_index();
00087 bool read_index_pathname(Filename &index_pathname,
00088 string &index_ref_contents) const;
00089 void merge_index(BamCacheIndex *new_index);
00090 void rebuild_index();
00091 INLINE void mark_index_stale();
00092
00093 void add_to_index(const BamCacheRecord *record);
00094 void remove_from_index(const Filename &source_filename);
00095
00096 void check_cache_size();
00097
00098 void emergency_read_only();
00099
00100 static BamCacheIndex *do_read_index(const Filename &index_pathname);
00101 static bool do_write_index(const Filename &index_pathname, const BamCacheIndex *index);
00102
00103 PT(BamCacheRecord) find_and_read_record(const Filename &source_pathname,
00104 const Filename &cache_filename);
00105 PT(BamCacheRecord) read_record(const Filename &source_pathname,
00106 const Filename &cache_filename,
00107 int pass);
00108 static PT(BamCacheRecord) do_read_record(const Filename &cache_pathname,
00109 bool read_data);
00110
00111 static string hash_filename(const string &filename);
00112 static void make_global();
00113
00114 bool _active;
00115 bool _cache_models;
00116 bool _cache_textures;
00117 bool _cache_compressed_textures;
00118 bool _read_only;
00119 Filename _root;
00120 int _flush_time;
00121 int _max_kbytes;
00122 static BamCache *_global_ptr;
00123
00124 BamCacheIndex *_index;
00125 time_t _index_stale_since;
00126
00127 Filename _index_pathname;
00128 string _index_ref_contents;
00129
00130 ReMutex _lock;
00131 };
00132
00133 #include "bamCache.I"
00134
00135 #endif