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96 lines
2.8 KiB
96 lines
2.8 KiB
/* This is part of the netCDF package.
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Copyright 2018 University Corporation for Atmospheric Research/Unidata
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See COPYRIGHT file for conditions of use.
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Test HDF5 alignment
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Dennis Heimbigner
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*/
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#include <nc_tests.h>
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#include "err_macros.h"
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#include <hdf5.h>
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#include <H5DSpublic.h>
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#undef DEBUG
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#define THRESHOLD 512
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#define ALIGNMENT 4096
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#define CHUNKSIZE 513
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int
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main(int argc, char **argv)
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{
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int i,ncid, varid, dimids[1];
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size_t chunks[1];
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unsigned char data[CHUNKSIZE];
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hid_t fileid, grpid, datasetid;
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hid_t dxpl_id = H5P_DEFAULT; /*data transfer property list */
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unsigned int filter_mask = 0;
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hsize_t hoffset[1];
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haddr_t addr;
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hsize_t size ;
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hid_t fspace;
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H5Eset_auto2(H5E_DEFAULT,(H5E_auto2_t)H5Eprint1,stderr);
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printf("\n*** Testing HDF5 alignment.\n");
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printf("chunksize=%d threshold=%d alignment=%d\n",CHUNKSIZE,THRESHOLD,ALIGNMENT);
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if(nc_set_alignment(THRESHOLD,ALIGNMENT)) ERR;
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if (nc_create("tst_alignment.nc", NC_NETCDF4, &ncid)) ERR;
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if (nc_def_dim(ncid, "d0", CHUNKSIZE, &dimids[0])) ERR;
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if (nc_def_var(ncid, "var", NC_UBYTE, 1, dimids, &varid)) ERR;
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chunks[0] = CHUNKSIZE;
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if (nc_def_var_chunking(ncid, varid, NC_CHUNKED, chunks)) ERR;
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if (nc_enddef(ncid)) ERR;
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for(i=0;i<CHUNKSIZE;i++) data[i] = (i)%2;
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if(nc_put_var(ncid,varid,data)) ERR;
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if (nc_close(ncid)) ERR;
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/* Use HDF5 API to verify */
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if ((fileid = H5Fopen("tst_alignment.nc", H5F_ACC_RDONLY, H5P_DEFAULT)) < 0) ERR;
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if ((grpid = H5Gopen1(fileid, "/")) < 0) ERR;
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if ((datasetid = H5Dopen1(grpid, "var")) < 0) ERR;
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/* Test the offset */
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if((fspace = H5Dget_space(datasetid)) < 0) ERR;
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if(H5Dget_chunk_info(datasetid, fspace, 0, hoffset, &filter_mask, &addr, &size) < 0) ERR;
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#ifdef DEBUG
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fprintf(stderr,"H5Dget_chunk_info: offset=%lu addr=%lu size=%lu\n",(unsigned long)hoffset[0], (unsigned long)addr, (unsigned long)size);
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fprintf(stderr,"\t%% alignment: offset=%lu, addr=%lu\n",
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(((unsigned long)hoffset[0]) % ALIGNMENT),
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(((unsigned long)addr) % ALIGNMENT)
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);
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#endif
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printf("H5Dget_chunk_info: addr=%lu (addr %% alignment)=%lu\n", (unsigned long)addr, (((unsigned long)hoffset[0]) % ALIGNMENT));
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if((addr % ALIGNMENT) != 0) ERR;
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/* Test chunk content */
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memset(data,0,sizeof(data));
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hoffset[0] = 0;
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if(H5Dread_chunk(datasetid, dxpl_id, hoffset, &filter_mask, data) < 0) ERR;
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#ifdef DEBUG
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fprintf(stderr,"H5Dread_chunk: offset=%lu offset %% alignment=%lu\n",(unsigned long)hoffset[0], (((unsigned long)hoffset) % ALIGNMENT));
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#endif
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for(i=0;i<CHUNKSIZE;i++) {
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if(data[i] != (i)%2) {
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fprintf(stderr,"data[%d] mismatch\n",i);
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ERR;
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}
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}
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if (H5Dclose(datasetid) < 0) ERR;
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if (H5Gclose(grpid) < 0) ERR;
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if (H5Fclose(fileid) < 0) ERR;
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SUMMARIZE_ERR;
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FINAL_RESULTS;
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}
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