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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 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/********************************************************************
*
* Testing thread safety in dataset creation in the HDF5 library
* -------------------------------------------------------------
*
* Set of tests to run multiple threads so that each creates a different
* dataset. This is likely to cause race-conditions if run in a non
* threadsafe environment.
*
* Temporary files generated:
* ttsafe_dcreate.h5
*
* HDF5 APIs exercised in thread:
* H5Screate_simple, H5Tcopy, H5Tset_order, H5Dcreate, H5Dwrite, H5Dclose,
* H5Tclose, H5Sclose.
*
* Created: Apr 28 2000
* Programmer: Chee Wai LEE
*
* Modification History
* --------------------
*
* 19 May 2000, Bill Wendling
* Changed so that it creates its own HDF5 file and removes it at cleanup
* time.
*
********************************************************************/
#include "ttsafe.h"
#ifdef H5_HAVE_THREADSAFE
#define FILENAME "ttsafe_dcreate.h5"
#define DATASETNAME_LENGTH 10
#define NUM_THREAD 16
void *tts_dcreate_creator(void *);
typedef struct thread_info {
int id;
hid_t file;
const char *dsetname;
} thread_info;
/*
* Set individual dataset names (rather than generated the names
* automatically)
*/
const char *dsetname[NUM_THREAD]={
"zero",
"one",
"two",
"three",
"four",
"five",
"six",
"seven",
"eight",
"nine",
"ten",
"eleven",
"twelve",
"thirteen",
"fourteen",
"fifteen"
};
thread_info thread_out[NUM_THREAD];
/*
**********************************************************************
* Thread safe test - multiple dataset creation
**********************************************************************
*/
void tts_dcreate(void)
{
/* Pthread definitions */
pthread_t threads[NUM_THREAD];
/* HDF5 data definitions */
hid_t file, dataset;
int datavalue, i;
pthread_attr_t attribute;
int ret;
/* set pthread attribute to perform global scheduling */
ret=pthread_attr_init(&attribute);
assert(ret==0);
#ifdef H5_HAVE_SYSTEM_SCOPE_THREADS
ret=pthread_attr_setscope(&attribute, PTHREAD_SCOPE_SYSTEM);
assert(ret==0);
#endif /* H5_HAVE_SYSTEM_SCOPE_THREADS */
/*
* Create a 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);
assert(file>=0);
/* simultaneously create a large number of datasets within the file */
for (i = 0; i < NUM_THREAD; i++) {
thread_out[i].id = i;
thread_out[i].file = file;
thread_out[i].dsetname = dsetname[i];
ret=pthread_create(&threads[i], NULL, tts_dcreate_creator, &thread_out[i]);
assert(ret==0);
}
for (i = 0;i < NUM_THREAD; i++) {
ret=pthread_join(threads[i], NULL);
assert(ret==0);
} /* end for */
/* compare data to see if it is written correctly */
for (i = 0; i < NUM_THREAD; i++) {
if ((dataset = H5Dopen(file,dsetname[i])) < 0) {
TestErrPrintf("Dataset name not found - test failed\n");
H5Fclose(file);
return;
} else {
ret=H5Dread(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &datavalue);
assert(ret>=0);
if (datavalue != i) {
TestErrPrintf("Wrong value read %d for dataset name %s - test failed\n",
datavalue, dsetname[i]);
ret=H5Dclose(dataset);
assert(ret>=0);
ret=H5Fclose(file);
assert(ret>=0);
return;
}
ret=H5Dclose(dataset);
assert(ret>=0);
}
}
/* close remaining resources */
ret=H5Fclose(file);
assert(ret>=0);
/* Destroy the thread attribute */
ret=pthread_attr_destroy(&attribute);
assert(ret==0);
}
void *tts_dcreate_creator(void *_thread_data)
{
hid_t dataspace, dataset;
herr_t ret;
hsize_t dimsf[1]; /* dataset dimensions */
struct thread_info thread_data;
memcpy(&thread_data,_thread_data,sizeof(struct thread_info));
/* define dataspace for dataset */
dimsf[0] = 1;
dataspace = H5Screate_simple(1,dimsf,NULL);
assert(dataspace>=0);
/* create a new dataset within the file */
dataset = H5Dcreate(thread_data.file, thread_data.dsetname,
H5T_NATIVE_INT, dataspace, H5P_DEFAULT);
assert(dataset>=0);
/* initialize data for dataset and write value to dataset */
ret=H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL,
H5P_DEFAULT, &thread_data.id);
assert(ret>=0);
/* close dataset and dataspace resources */
ret=H5Dclose(dataset);
assert(ret>=0);
ret=H5Sclose(dataspace);
assert(ret>=0);
return NULL;
}
void cleanup_dcreate(void)
{
HDunlink(FILENAME);
}
#endif /*H5_HAVE_THREADSAFE*/
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