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https://github.com/HDFGroup/hdf5.git
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120 lines
4.1 KiB
C
120 lines
4.1 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the COPYING file, which can be found at the root of the source code *
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* distribution tree, or in https://www.hdfgroup.org/licenses. *
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* If you do not have access to either file, you may request a copy from *
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* help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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#include "h5test.h"
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#define H5F_FRIEND /*suppress error about including H5Fpkg */
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#define H5FD_FRIEND /*suppress error about including H5FDpkg */
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#define H5FD_TESTING
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#include "H5Fpkg.h"
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#include "H5FDpkg.h"
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#include "H5CXprivate.h" /* API Contexts */
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#include "H5Iprivate.h"
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#include "H5VLprivate.h" /* Virtual Object Layer */
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/* Filename: this is the same as the define in accum.c used by test_swmr_write_big() */
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static const char *FILENAME[] = {"accum", "accum_swmr_big", NULL};
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/*-------------------------------------------------------------------------
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* Function: main
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*
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* Purpose: This is the reader forked/execved by "test_swmr_write_big()"
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* test in accum.c. The reader reads at address 1024 from the file
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* and verifies that the metadata in the accumulator at address
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* 1024 does get written to disk.
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*
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* Return: Success: EXIT_SUCCESS
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* Failure: EXIT_FAILURE
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*-------------------------------------------------------------------------
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*/
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int
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main(void)
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{
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hid_t fid = H5I_INVALID_HID; /* File ID */
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hid_t fapl = H5I_INVALID_HID; /* file access property list ID */
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H5F_t *f = NULL; /* File pointer */
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char filename[1024];
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unsigned u; /* Local index variable */
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uint8_t rbuf[1024]; /* Buffer for reading */
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uint8_t buf[1024]; /* Buffer for holding the expected data */
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char *driver = NULL; /* VFD string (from env variable) */
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bool api_ctx_pushed = false; /* Whether API context pushed */
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/* Testing setup */
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h5_reset();
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/* Skip this test if SWMR I/O is not supported for the VFD specified
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* by the environment variable.
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*/
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driver = getenv(HDF5_DRIVER);
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if (!H5FD__supports_swmr_test(driver))
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return EXIT_SUCCESS;
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/* Initialize buffers */
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for (u = 0; u < 1024; u++) {
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rbuf[u] = 0; /* The buffer for reading */
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buf[u] = 1; /* The expected data should be all 1s */
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}
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if ((fapl = h5_fileaccess()) < 0)
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FAIL_STACK_ERROR;
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h5_fixname(FILENAME[1], fapl, filename, sizeof filename);
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/* Open the file with SWMR_READ */
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if ((fid = H5Fopen(filename, H5F_ACC_RDONLY | H5F_ACC_SWMR_READ, fapl)) < 0)
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FAIL_STACK_ERROR;
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/* Push API context */
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if (H5CX_push() < 0)
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FAIL_STACK_ERROR;
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api_ctx_pushed = true;
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/* Get H5F_t * to internal file structure */
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if (NULL == (f = (H5F_t *)H5VL_object(fid)))
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FAIL_STACK_ERROR;
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/* Should read in [1024, 2024] with buf data */
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if (H5F_block_read(f, H5FD_MEM_DEFAULT, (haddr_t)1024, (size_t)1024, rbuf) < 0)
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FAIL_STACK_ERROR;
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/* Verify the data read is correct */
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if (memcmp(buf, rbuf, (size_t)1024) != 0)
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TEST_ERROR;
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/* CLose the file */
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if (H5Pclose(fapl) < 0)
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FAIL_STACK_ERROR;
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if (H5Fclose(fid) < 0)
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FAIL_STACK_ERROR;
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/* Pop API context */
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if (api_ctx_pushed && H5CX_pop(false) < 0)
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FAIL_STACK_ERROR;
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api_ctx_pushed = false;
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return EXIT_SUCCESS;
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error:
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H5E_BEGIN_TRY
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{
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H5Pclose(fapl);
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H5Fclose(fid);
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}
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H5E_END_TRY
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if (api_ctx_pushed)
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H5CX_pop(false);
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return EXIT_FAILURE;
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} /* end main() */
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