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https://github.com/Unidata/netcdf-c.git
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39 lines
1.5 KiB
C
39 lines
1.5 KiB
C
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/*********************************************************************
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* Copyright 2018, UCAR/Unidata
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* See netcdf/COPYRIGHT file for copying and redistribution conditions.
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*********************************************************************/
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#ifndef ZCACHE_H
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#define ZCACHE_H
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typedef struct NCZCacheEntry {
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int modified;
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size64_t indices[NC_MAX_VAR_DIMS];
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char* key; /* as string */
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void* data;
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} NCZCacheEntry;
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typedef struct NCZChunkCache {
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const NC_VAR_INFO_T* var; /* backlink */
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size64_t chunksize;
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void* fillchunk; /* enough fillvalues to fill a chunk */
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size_t maxentries; /* Max number of entries allowed */
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NClist* entries; /* in LRU order */
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} NCZChunkCache;
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/**************************************************/
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extern int NCZ_set_var_chunk_cache(int ncid, int varid, size_t size, size_t nelems, float preemption);
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extern int NCZ_adjust_var_cache(NC_GRP_INFO_T *grp, NC_VAR_INFO_T *var);
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extern int NCZ_create_chunk_cache(NC_VAR_INFO_T* var, size64_t, NCZChunkCache** cachep);
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extern void NCZ_free_chunk_cache(NCZChunkCache* cache);
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extern int NCZ_read_cache_chunk(NCZChunkCache* cache, const size64_t* indices, void** datap);
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extern int NCZ_flush_chunk_cache(NCZChunkCache* cache);
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extern size64_t NCZ_cache_entrysize(NCZChunkCache* cache);
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extern NCZCacheEntry* NCZ_cache_entry(NCZChunkCache* cache, const size64_t* indices);
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extern size64_t NCZ_cache_size(NCZChunkCache* cache);
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extern int NCZ_buildchunkpath(NCZChunkCache* cache, const size64_t* chunkindices, char** keyp);
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#endif /*ZCACHE_H*/
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