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hdf5/test/ttsafe_cancel.c
Quincey Koziol 987f5d5e4d [svn-r8048] Purpose:
Code cleanup & reorganization

Description:
    Move further in the testing framework cleanup, eliminating all the
global variables (moving them into testframe.c as static variables) from the
testing framework code and moving it into the libh5test.a.

Platforms tested:
    FreeBSD 4.9 (sleipnir) w & w/o thread-safety, c++ & parallel
    h5committested
2004-01-09 20:41:13 -05:00

212 lines
6.5 KiB
C

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/********************************************************************
*
* Testing thread safety. Thread Cancellation safety
* -------------------------------------------------
*
* The main thread spawns a child to perform a series of dataset writes
* to a hdf5 file. The main thread and child thread synchronizes within
* a callback function called during a H5Diterate call afterwhich the
* main thread attempts to cancel the child thread.
*
* The cancellation should only work after the child thread has safely
* left the H5Diterate call.
*
* Temporary files generated:
* ttsafe_cancel.h5
*
* HDF5 APIs exercised in thread:
* H5Screate_simple, H5Tcopy, H5Tset_order, H5Dcreate, H5Dclose,
* H5Dwrite, H5Dread, H5Diterate, H5Tclose, H5Sclose.
*
* Created: May 15 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_cancel.h5"
#define DATASETNAME "commonname"
void *tts_cancel_thread(void *);
void tts_cancel_barrier(void);
herr_t tts_cancel_callback(void *, hid_t, hsize_t, hssize_t *, void *);
void cancellation_cleanup(void *);
hid_t cancel_file;
typedef struct cleanup_struct {
hid_t dataset;
hid_t datatype;
hid_t dataspace;
} cancel_cleanup_t;
pthread_t childthread;
pthread_mutex_t mutex;
pthread_cond_t cond;
void tts_cancel(void)
{
pthread_attr_t attribute;
hid_t dataset;
int buffer;
/* make thread scheduling global */
pthread_attr_init(&attribute);
#ifdef H5_HAVE_SYSTEM_SCOPE_THREADS
pthread_attr_setscope(&attribute, PTHREAD_SCOPE_SYSTEM);
#endif /* H5_HAVE_SYSTEM_SCOPE_THREADS */
/*
* Create a hdf5 file using H5F_ACC_TRUNC access, default file
* creation plist and default file access plist
*/
cancel_file = H5Fcreate(FILENAME, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
pthread_create(&childthread, &attribute, tts_cancel_thread, NULL);
tts_cancel_barrier();
pthread_cancel(childthread);
dataset = H5Dopen(cancel_file, DATASETNAME);
H5Dread(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &buffer);
if (buffer != 11)
TestErrPrintf("operation unsuccessful with value at %d instead of 11\n", buffer);
H5Dclose(dataset);
H5Fclose(cancel_file);
/* Destroy the thread attribute */
pthread_attr_destroy(&attribute);
}
void *tts_cancel_thread(void UNUSED *arg)
{
int datavalue;
int *buffer;
hid_t dataspace, datatype, dataset;
hsize_t dimsf[1]; /* dataset dimensions */
cancel_cleanup_t *cleanup_structure;
/* 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(cancel_file, DATASETNAME, datatype, dataspace, H5P_DEFAULT);
/* If thread is cancelled, make cleanup call */
cleanup_structure = (cancel_cleanup_t*)malloc(sizeof(cancel_cleanup_t));
cleanup_structure->dataset = dataset;
cleanup_structure->datatype = datatype;
cleanup_structure->dataspace = dataspace;
pthread_cleanup_push(cancellation_cleanup, cleanup_structure);
datavalue = 1;
H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &datavalue);
buffer = malloc(sizeof(int));
H5Dread(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, buffer);
H5Diterate(buffer, H5T_NATIVE_INT, dataspace, tts_cancel_callback, &dataset);
sleep(3);
datavalue = 100;
H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &datavalue);
H5Dclose(dataset);
H5Tclose(datatype);
H5Sclose(dataspace);
/*
* Required by pthreads. The argument 0 pops the stack but does not
* execute the cleanup routine.
*/
pthread_cleanup_pop(0);
return NULL;
}
herr_t tts_cancel_callback(void *elem, hid_t UNUSED type_id, hsize_t UNUSED ndim,
hssize_t UNUSED *point, void *operator_data)
{
int value = *(int *)elem;
hid_t dataset = *(hid_t *)operator_data;
tts_cancel_barrier();
sleep(3);
if (value != 1) {
TestErrPrintf("Error! Element value should be 1 and not %d\n", value);
return -1;
}
value += 10;
H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &value);
return 0;
}
/*
* Need to perform the dataset, datatype and dataspace close that was never
* performed because of thread cancellation
*/
void cancellation_cleanup(void *arg)
{
cancel_cleanup_t *cleanup_structure = (cancel_cleanup_t *)arg;
H5Dclose(cleanup_structure->dataset);
H5Tclose(cleanup_structure->datatype);
H5Sclose(cleanup_structure->dataspace);
/* retained for debugging */
/* print_func("cancellation noted, cleaning up ... \n"); */
}
/*
* Artificial (and specific to this test) barrier to keep track of whether
* both the main and child threads have reached a point in the program.
*/
void tts_cancel_barrier(void)
{
static int count = 2;
pthread_mutex_lock(&mutex);
if (count != 1) {
count--;
pthread_cond_wait(&cond, &mutex);
} else {
pthread_cond_signal(&cond);
}
pthread_mutex_unlock(&mutex);
}
void cleanup_cancel(void)
{
HDunlink(FILENAME);
}
#endif /*H5_HAVE_THREADSAFE*/