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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by the Board of Trustees of the University of Illinois. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the files COPYING and Copyright.html. COPYING can be found at the root *
* of the source code distribution tree; Copyright.html can be found at the *
* root level of an installed copy of the electronic HDF5 document set and *
* is linked from the top-level documents page. It can also be found at *
* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "h5test.h"
#define H5F_FRIEND /*suppress error about including H5Fpkg */
#define H5FD_FRIEND /*suppress error about including H5FDpkg */
#define H5FD_TESTING
#include "H5Fpkg.h"
#include "H5FDpkg.h"
#include "H5Iprivate.h"
/* Filename: this is the same as the define in accum.c used by test_swmr_write_big() */
#define SWMR_FILENAME "accum_swmr_big.h5"
/*-------------------------------------------------------------------------
* Function: main
*
* Purpose: This is the reader forked/execved by "test_swmr_write_big()"
* test in accum.c. The reader reads at address 1024 from the file
* and verifies that the metadata in the accumulator at address
* 1024 does get written to disk.
*
* Return: Success: EXIT_SUCCESS
* Failure: EXIT_FAILURE
*
* Programmer: Vailin Choi; June 2013
*
*-------------------------------------------------------------------------
*/
int
main(void)
{
hid_t fid = -1; /* File ID */
hid_t fapl = -1; /* file access property list ID */
H5F_t *f = NULL; /* File pointer */
unsigned u; /* Local index variable */
uint8_t rbuf[1024]; /* Buffer for reading */
uint8_t buf[1024]; /* Buffer for holding the expected data */
char *driver = NULL; /* VFD string (from env variable) */
/* Skip this test if SWMR I/O is not supported for the VFD specified
* by the environment variable.
*/
driver = HDgetenv("HDF5_DRIVER");
if(!H5FD_supports_swmr_test(driver)) {
return EXIT_SUCCESS;
}
/* Initialize buffers */
for(u = 0; u < 1024; u++) {
rbuf[u] = 0; /* The buffer for reading */
buf[u] = 1; /* The expected data should be all 1s */
}
if((fapl = h5_fileaccess()) < 0)
FAIL_STACK_ERROR
/* Open the file with SWMR_READ */
if((fid = H5Fopen(SWMR_FILENAME, H5F_ACC_RDONLY | H5F_ACC_SWMR_READ, fapl)) < 0)
FAIL_STACK_ERROR
/* Get H5F_t * to internal file structure */
if(NULL == (f = (H5F_t *)H5I_object(fid)))
FAIL_STACK_ERROR
/* Should read in [1024, 2024] with buf data */
if(H5F_block_read(f, H5FD_MEM_DEFAULT, (haddr_t)1024, (size_t)1024, H5P_DATASET_XFER_DEFAULT, rbuf) < 0)
FAIL_STACK_ERROR;
/* Verify the data read is correct */
if(HDmemcmp(buf, rbuf, (size_t)1024) != 0)
TEST_ERROR;
/* CLose the file */
if(H5Pclose(fapl) < 0)
FAIL_STACK_ERROR;
if(H5Fclose(fid) < 0)
FAIL_STACK_ERROR;
return EXIT_SUCCESS;
error:
H5Fclose(fid);
return EXIT_FAILURE;
} /* end main() */
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