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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/********************************************************************
*
* Testing for thread safety in H5A (dataset attribute) library
* operations. -- Threaded program --
* ------------------------------------------------------------------
*
* Plan: Attempt to break H5Acreate2 by making many simultaneous create
* calls.
*
* Claim: N calls to H5Acreate2 should create N attributes for a dataset
* if threadsafe. If some unprotected shared data exists for the
* dataset (eg, a count of the number of attributes in the
* dataset), there is a small chance that consecutive reads occur
* before a write to that shared variable.
*
* Created: Oct 5 1999
* Programmer: Chee Wai LEE
*
********************************************************************/
#include "ttsafe.h"
#ifdef H5_HAVE_THREADSAFE
#define FILENAME "ttsafe_acreate.h5"
#define DATASETNAME "IntData"
#define NUM_THREADS 16
void *tts_acreate_thread(void *);
typedef struct acreate_data_struct {
hid_t dataset;
hid_t datatype;
hid_t dataspace;
int current_index;
} ttsafe_name_data_t;
void
tts_acreate(void)
{
/* Thread declarations */
H5TS_thread_t threads[NUM_THREADS];
/* HDF5 data declarations */
hid_t file = H5I_INVALID_HID;
hid_t dataset = H5I_INVALID_HID;
hid_t dataspace = H5I_INVALID_HID;
hid_t datatype = H5I_INVALID_HID;
hid_t attribute = H5I_INVALID_HID;
hsize_t dimsf[1]; /* dataset dimensions */
/* data declarations */
int data; /* data to write */
int buffer, i;
herr_t status;
ttsafe_name_data_t *attrib_data;
/*
* Create an HDF5 file using H5F_ACC_TRUNC access, default file
* creation plist and default file access plist
*/
file = H5Fcreate(FILENAME, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
CHECK(file, H5I_INVALID_HID, "H5Fcreate");
/* create a simple dataspace for the dataset */
dimsf[0] = 1;
dataspace = H5Screate_simple(1, dimsf, NULL);
CHECK(dataspace, H5I_INVALID_HID, "H5Screate_simple");
/* define datatype for the data using native little endian integers */
datatype = H5Tcopy(H5T_NATIVE_INT);
CHECK(datatype, H5I_INVALID_HID, "H5Tcopy");
status = H5Tset_order(datatype, H5T_ORDER_LE);
CHECK(status, FAIL, "H5Tset_order");
/* create a new dataset within the file */
dataset = H5Dcreate2(file, DATASETNAME, datatype, dataspace, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
CHECK(dataset, H5I_INVALID_HID, "H5Dcreate2");
/* initialize data for dataset and write value to dataset */
data = NUM_THREADS;
status = H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &data);
CHECK(status, FAIL, "H5Dwrite");
/*
* Simultaneously create a large number of attributes to be associated
* with the dataset
*/
for(i = 0; i < NUM_THREADS; i++) {
attrib_data = (ttsafe_name_data_t *)HDmalloc(sizeof(ttsafe_name_data_t));
attrib_data->dataset = dataset;
attrib_data->datatype = datatype;
attrib_data->dataspace = dataspace;
attrib_data->current_index = i;
threads[i] = H5TS_create_thread(tts_acreate_thread, NULL, attrib_data);
}
for(i = 0; i < NUM_THREADS; i++)
H5TS_wait_for_thread(threads[i]);
/* verify the correctness of the test */
for(i = 0; i < NUM_THREADS; i++) {
attribute = H5Aopen(dataset, gen_name(i), H5P_DEFAULT);
CHECK(attribute, H5I_INVALID_HID, "H5Aopen");
if(attribute < 0)
TestErrPrintf("unable to open appropriate attribute. Test failed!\n");
else {
status = H5Aread(attribute, H5T_NATIVE_INT, &buffer);
CHECK(status, FAIL, "H5Aread");
VERIFY(buffer, i, "data values don't match");
status = H5Aclose(attribute);
CHECK(status, FAIL, "H5Aclose");
}
}
/* close remaining resources */
status = H5Sclose(dataspace);
CHECK(status, FAIL, "H5Sclose");
status = H5Tclose(datatype);
CHECK(status, FAIL, "H5Sclose");
status = H5Dclose(dataset);
CHECK(status, FAIL, "H5Dclose");
status = H5Fclose(file);
CHECK(status, FAIL, "H5Fclose");
} /* end tts_acreate() */
void *
tts_acreate_thread(void *client_data)
{
hid_t attribute = H5I_INVALID_HID;
char *attribute_name;
int *attribute_data; /* data for attributes */
herr_t status;
ttsafe_name_data_t *attrib_data;
attrib_data = (ttsafe_name_data_t *)client_data;
/* Create attribute */
attribute_name = gen_name(attrib_data->current_index);
attribute = H5Acreate2(attrib_data->dataset, attribute_name,
attrib_data->datatype, attrib_data->dataspace,
H5P_DEFAULT, H5P_DEFAULT);
CHECK(attribute, H5I_INVALID_HID, "H5Acreate2");
/* Write data to the attribute */
attribute_data = (int *)HDmalloc(sizeof(int));
*attribute_data = attrib_data->current_index;
status = H5Awrite(attribute, H5T_NATIVE_INT, attribute_data);
CHECK(status, FAIL, "H5Awrite");
status = H5Aclose(attribute);
CHECK(status, FAIL, "H5Aclose");
return NULL;
} /* end tts_acreate_thread() */
void
cleanup_acreate(void)
{
HDunlink(FILENAME);
}
#endif /*H5_HAVE_THREADSAFE*/
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