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/********************************************************************
*
* Testing thread safety. Deliberate per-thread errors to test error stack
* -----------------------------------------------------------------------
*
* Create 16 multiple threads to create datasets with the same name. The
* library should respond with 15 equivalent error stack printouts (one for
* each bad thread). The final hdf5 file should be a valid file with one
* entry.
*
* Temporary files generated:
* ttsafe.h5
*
* HDF5 APIs exercised in thread:
* H5Screate_simple, H5Tcopy, H5Tset_order, H5Dcreate, H5Dclose,
* H5Tclose, H5Sclose.
*
* Created: Apr 28 2000
* Programmer: Chee Wai LEE
*
* Modification History
* --------------------
*
********************************************************************/
#include "ttsafe.h"
#ifndef H5_HAVE_THREADSAFE
static int dummy; /* just to create a non-empty object file */
#else
#define NUM_THREAD 16
#define FILE "ttsafe.h5"
/* Having a common dataset name is an error */
#define DATASETNAME "commonname"
#define EXPECTED_ERROR_DEPTH 3
#define WRITE_NUMBER 37
herr_t error_callback(void *);
herr_t walk_error_callback(int, H5E_error_t *, void *);
void *tts_error_thread(void *);
hid_t error_file;
typedef struct err_num_struct {
int maj_num;
int min_num;
} err_num_t;
err_num_t expected[] = {{15, 23}, {15, 23}, {10, 32}};
int error_flag = 0;
int error_count = 0;
pthread_mutex_t error_mutex;
void tts_error(void) {
int i;
pthread_t threads[NUM_THREAD];
pthread_attr_t attribute;
hid_t dataset;
int value;
H5E_auto_t old_error_cb;
void *old_error_client_data;
/* set up mutex for global count of errors */
pthread_mutex_init(&error_mutex, NULL);
/* preserve previous error stack handler */
H5Eget_auto(&old_error_cb, &old_error_client_data);
/* set our own auto error stack handler */
H5Eset_auto(error_callback, NULL);
/* make thread scheduling global */
pthread_attr_init(&attribute);
pthread_attr_setscope(&attribute, PTHREAD_SCOPE_SYSTEM);
/* create a hdf5 file using H5F_ACC_TRUNC access,
* default file creation plist and default file
* access plist
*/
error_file = H5Fcreate(FILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
for (i=0;i<NUM_THREAD;i++) {
pthread_create(&threads[i], &attribute, tts_error_thread, NULL);
}
for (i=0;i<NUM_THREAD;i++) {
pthread_join(threads[i],NULL);
}
if (error_flag) {
fprintf(stderr, "Threads reporting different error values!\n");
}
if (error_count != NUM_THREAD - 1) {
fprintf(stderr, "Error: %d threads failed instead of %d\n",
error_count, NUM_THREAD-1);
}
dataset = H5Dopen(error_file, DATASETNAME);
H5Dread(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &value);
if (value != WRITE_NUMBER) {
fprintf(stderr,
"Error: Successful thread wrote value %d instead of %d\n",
value, WRITE_NUMBER);
}
H5Dclose(dataset);
H5Fclose(error_file);
/* turn our error stack handler off */
H5Eset_auto(old_error_cb, old_error_client_data);
}
void *tts_error_thread(void *arg) {
hid_t dataspace, datatype, dataset;
hsize_t dimsf[1]; /* dataset dimensions */
int value;
/* define dataspace for dataset
*/
dimsf[0] = 1;
dataspace = H5Screate_simple(1,dimsf,NULL);
/* define datatype for the data using native little endian integers
*/
datatype = H5Tcopy(H5T_NATIVE_INT);
H5Tset_order(datatype, H5T_ORDER_LE);
/* create a new dataset within the file
*/
dataset = H5Dcreate(error_file, DATASETNAME, datatype, dataspace,
H5P_DEFAULT);
if (dataset >= 0) { /* not an error */
value = WRITE_NUMBER;
H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &value);
H5Dclose(dataset);
}
H5Tclose(datatype);
H5Sclose(dataspace);
return (NULL);
}
void cleanup_error() {
}
herr_t error_callback(void *client_data) {
pthread_mutex_lock(&error_mutex);
error_count++;
pthread_mutex_unlock(&error_mutex);
return (H5Ewalk(H5E_WALK_DOWNWARD, walk_error_callback, NULL));
}
herr_t walk_error_callback(int n, H5E_error_t *err_desc,
void *client_data) {
int maj_num, min_num;
if (err_desc) {
maj_num = err_desc->maj_num;
min_num = err_desc->min_num;
if (n < EXPECTED_ERROR_DEPTH) {
if (maj_num == expected[n].maj_num &&
min_num == expected[n].min_num) {
return SUCCEED;
}
}
}
error_flag = -1;
return SUCCEED;
}
#endif /*H5_HAVE_THREADSAFE*/
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