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hdf5/test/h5test.c
Quincey Koziol d7573cbc85 [svn-r12292] Purpose: 
Code maintenance

Description:
    Remove flexible parallel code

Platforms tested:
    FreeBSD 4.11 (sleipnir)
    Linux 2.4 (heping)
    Solaris 2.9 (shanti)
    Linux 2.4/64 (mir)
2006-04-20 18:54:47 -05:00

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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Robb Matzke <matzke@llnl.gov>
* Thursday, November 19, 1998
*
* Purpose: Provides support functions for most of the hdf5 tests cases.
*
*/
#undef NDEBUG /*override -DNDEBUG */
#include <sys/types.h>
#include <sys/stat.h>
#include "h5test.h"
#ifdef WIN32
#include <process.h>
#include <direct.h>
#include <winsock.h>
#endif /* WIN32 */
/*
* Define these environment variables or constants to influence functions in
* this test support library. The environment variable is used in preference
* to the cpp constant. If neither is defined then use some default value.
*
* HDF5_DRIVER: This string describes what low level file driver to
* use for HDF5 file access. The first word in the
* value is the name of the driver and subsequent data
* is interpreted according to the driver. See
* h5_fileaccess() for details.
*
* HDF5_PREFIX: A string to add to the beginning of all serial test
* file names. This can be used to run tests in a
* different file system (e.g., "/tmp" or "/tmp/myname").
* The prefix will be separated from the base file name
* by a slash. See h5_fixname() for details.
*
* HDF5_PARAPREFIX: A string to add to the beginning of all parallel test
* file names. This can be used to tell MPIO what driver
* to use (e.g., "gfs:", "ufs:", or "nfs:") or to use a
* different file system (e.g., "/tmp" or "/tmp/myname").
* The prefix will be separated from the base file name
* by a slash. See h5_fixname() for details.
*
*/
/*
* In a parallel machine, the filesystem suitable for compiling is
* unlikely a parallel file system that is suitable for parallel I/O.
* There is no standard pathname for the parallel file system. /tmp
* is about the best guess.
*/
#ifndef HDF5_PARAPREFIX
#ifdef __PUMAGON__
/* For the PFS of TFLOPS */
#define HDF5_PARAPREFIX "pfs:/pfs_grande/multi/tmp_1"
#else
#define HDF5_PARAPREFIX ""
#endif
#endif
char *paraprefix = NULL; /* for command line option para-prefix */
#ifdef H5_HAVE_PARALLEL
MPI_Info h5_io_info_g=MPI_INFO_NULL;/* MPI INFO object for IO */
#endif
/*
* These are the letters that are appended to the file name when generating
* names for the split and multi drivers. They are:
*
* m: All meta data when using the split driver.
* s: The userblock, superblock, and driver info block
* b: B-tree nodes
* r: Dataset raw data
* g: Global heap
* l: local heap (object names)
* o: object headers
*/
static const char *multi_letters = "msbrglo";
static herr_t h5_errors(void *client_data);
/*-------------------------------------------------------------------------
* Function: h5_errors
*
* Purpose: Displays the error stack after printing "*FAILED*".
*
* Return: Success: 0
*
* Failure: -1
*
* Programmer: Robb Matzke
* Wednesday, March 4, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static herr_t
h5_errors(void UNUSED *client_data)
{
H5_FAILED();
H5Eprint(stdout);
return 0;
}
/*-------------------------------------------------------------------------
* Function: h5_cleanup
*
* Purpose: Cleanup temporary test files.
* base_name contains the list of test file names.
* The file access property list is also closed.
*
* Return: Non-zero if cleanup actions were performed; zero otherwise.
*
* Programmer: Albert Cheng
* May 28, 1998
*
* Modifications:
* Albert Cheng, 2000-09-09
* Added the explicite base_name argument to replace the
* global variable FILENAME.
*
*-------------------------------------------------------------------------
*/
int
h5_cleanup(const char *base_name[], hid_t fapl)
{
char filename[1024];
char temp[2048];
int i, j;
int retval=0;
hid_t driver;
if (GetTestCleanup()){
for (i = 0; base_name[i]; i++) {
if (h5_fixname(base_name[i], fapl, filename, sizeof(filename)) == NULL)
continue;
driver = H5Pget_driver(fapl);
if (driver == H5FD_FAMILY) {
for (j = 0; /*void*/; j++) {
HDsnprintf(temp, sizeof temp, filename, j);
if (HDaccess(temp, F_OK) < 0)
break;
HDremove(temp);
}
} else if (driver == H5FD_CORE) {
hbool_t backing; /* Whether the core file has backing store */
H5Pget_fapl_core(fapl,NULL,&backing);
/* If the file was stored to disk with bacing store, remove it */
if(backing)
HDremove(filename);
} else if (driver == H5FD_MULTI) {
H5FD_mem_t mt;
assert(HDstrlen(multi_letters)==H5FD_MEM_NTYPES);
for (mt = H5FD_MEM_DEFAULT; mt < H5FD_MEM_NTYPES; H5_INC_ENUM(H5FD_mem_t,mt)) {
HDsnprintf(temp, sizeof temp, "%s-%c.h5",
filename, multi_letters[mt]);
HDremove(temp); /*don't care if it fails*/
}
} else {
HDremove(filename);
}
}
retval = 1;
}
H5Pclose(fapl);
return retval;
}
/*-------------------------------------------------------------------------
* Function: h5_reset
*
* Purpose: Reset the library by closing it.
*
* Return: void
*
* Programmer: Robb Matzke
* Friday, November 20, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
void
h5_reset(void)
{
char filename[1024];
HDfflush(stdout);
HDfflush(stderr);
H5close();
H5Eset_auto(h5_errors, NULL);
/*
* Cause the library to emit some diagnostics early so they don't
* interfere with other formatted output.
*/
sprintf(filename, "/tmp/h5emit-%05d.h5", HDgetpid());
H5E_BEGIN_TRY {
hid_t file = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT,
H5P_DEFAULT);
hid_t grp = H5Gcreate(file, "emit", 0);
H5Gclose(grp);
H5Fclose(file);
HDunlink(filename);
} H5E_END_TRY;
}
/*-------------------------------------------------------------------------
* Function: h5_fixname
*
* Purpose: Create a file name from a file base name like `test' and
* return it through the FULLNAME (at most SIZE characters
* counting the null terminator). The full name is created by
* prepending the contents of HDF5_PREFIX (separated from the
* base name by a slash) and appending a file extension based on
* the driver supplied, resulting in something like
* `ufs:/u/matzke/test.h5'.
*
* Return: Success: The FULLNAME pointer.
*
* Failure: NULL if BASENAME or FULLNAME is the null
* pointer or if FULLNAME isn't large enough for
* the result.
*
* Programmer: Robb Matzke
* Thursday, November 19, 1998
*
* Modifications:
* Robb Matzke, 1999-08-03
* Modified to use the virtual file layer.
*
* Albert Cheng, 2000-01-25
* Added prefix for parallel test files.
*
* Albert Cheng, 2003-05-08
* Changed the default parallel prefix back to NULL but added
* an explanation remark of $HDF5_PARAPREFIX.
*-------------------------------------------------------------------------
*/
char *
h5_fixname(const char *base_name, hid_t fapl, char *fullname, size_t size)
{
const char *prefix = NULL;
const char *suffix = ".h5"; /* suffix has default */
char *ptr, last = '\0';
size_t i, j;
hid_t driver = -1;
int isppdriver = 0; /* if the driver is MPI parallel */
if (!base_name || !fullname || size < 1)
return NULL;
memset(fullname, 0, size);
/* figure out the suffix */
if (H5P_DEFAULT != fapl) {
if ((driver = H5Pget_driver(fapl)) < 0)
return NULL;
if (H5FD_FAMILY == driver)
suffix = "%05d.h5";
else if (H5FD_CORE == driver || H5FD_MULTI == driver)
suffix = NULL;
}
/* Must first check fapl is not H5P_DEFAULT (-1) because H5FD_XXX
* could be of value -1 if it is not defined.
*/
isppdriver = H5P_DEFAULT != fapl &&
(H5FD_MPIO==driver || H5FD_MPIPOSIX==driver);
/* Check HDF5_NOCLEANUP environment setting.
* (The #ifdef is needed to prevent compile failure in case MPI is not
* configured.)
*/
if (isppdriver){
#ifdef H5_HAVE_PARALLEL
if (getenv_all(MPI_COMM_WORLD, 0, "HDF5_NOCLEANUP"))
SetTestNoCleanup();
#endif /* H5_HAVE_PARALLEL */
}else{
if (HDgetenv("HDF5_NOCLEANUP"))
SetTestNoCleanup();
}
/* Check what prefix to use for test files. Process HDF5_PARAPREFIX and
* HDF5_PREFIX.
* Use different ones depending on parallel or serial driver used.
* (The #ifdef is needed to prevent compile failure in case MPI is not
* configured.)
*/
if (isppdriver){
#ifdef H5_HAVE_PARALLEL
/*
* For parallel:
* First use command line option, then the environment
* variable, then try the constant
*/
static int explained = 0;
prefix = (paraprefix ? paraprefix : getenv_all(MPI_COMM_WORLD, 0, "HDF5_PARAPREFIX"));
if (!prefix && !explained) {
/* print hint by process 0 once. */
int mpi_rank;
MPI_Comm_rank(MPI_COMM_WORLD, &mpi_rank);
if (mpi_rank == 0)
printf("*** Hint ***\n"
"You can use environment variable HDF5_PARAPREFIX to "
"run parallel test files in a\n"
"different directory or to add file type prefix. E.g.,\n"
" HDF5_PARAPREFIX=pfs:/PFS/user/me\n"
" export HDF5_PARAPREFIX\n"
"*** End of Hint ***\n");
explained = TRUE;
#ifdef HDF5_PARAPREFIX
prefix = HDF5_PARAPREFIX;
#endif /* HDF5_PARAPREFIX */
}
#endif /* H5_HAVE_PARALLEL */
} else {
/*
* For serial:
* First use the environment variable, then try the constant
*/
prefix = HDgetenv("HDF5_PREFIX");
#ifdef HDF5_PREFIX
if (!prefix)
prefix = HDF5_PREFIX;
#endif /* HDF5_PREFIX */
}
/* Prepend the prefix value to the base name */
if (prefix && *prefix) {
if (isppdriver){
/* This is a parallel system */
char *subdir;
if (!HDstrcmp(prefix, HDF5_PARAPREFIX)) {
/*
* If the prefix specifies the HDF5_PARAPREFIX directory, then
* default to using the "/tmp/$USER" or "/tmp/$LOGIN"
* directory instead.
*/
char *user, *login;
user = HDgetenv("USER");
login = HDgetenv("LOGIN");
subdir = (user ? user : login);
if (subdir) {
for (i = 0; i < size && prefix[i]; i++)
fullname[i] = prefix[i];
fullname[i++] = '/';
for (j = 0; i < size && subdir[j]; ++i, ++j)
fullname[i] = subdir[j];
}
}
if (!fullname[0])
/* We didn't append the prefix yet */
HDstrncpy(fullname, prefix, MIN(strlen(prefix), size));
if (HDstrlen(fullname) + HDstrlen(base_name) + 1 < size) {
/*
* Append the base_name with a slash first. Multiple
* slashes are handled below.
*/
h5_stat_t buf;
if (HDstat(fullname, &buf) < 0)
/* The directory doesn't exist just yet */
if (HDmkdir(fullname, (mode_t)0755) < 0 && errno != EEXIST)
/*
* We couldn't make the "/tmp/${USER,LOGIN}"
* subdirectory. Default to PREFIX's original
* prefix value.
*/
HDstrcpy(fullname, prefix);
HDstrcat(fullname, "/");
HDstrcat(fullname, base_name);
} else {
/* Buffer is too small */
return NULL;
}
} else {
if (HDsnprintf(fullname, size, "%s/%s", prefix, base_name) == (int)size)
/* Buffer is too small */
return NULL;
}
} else if (HDstrlen(base_name) >= size) {
/* Buffer is too small */
return NULL;
} else {
HDstrcpy(fullname, base_name);
}
/* Append a suffix */
if (suffix) {
if (HDstrlen(fullname) + HDstrlen(suffix) >= size)
return NULL;
HDstrcat(fullname, suffix);
}
/* Remove any double slashes in the filename */
for (ptr = fullname, i = j = 0; ptr && i < size; i++, ptr++) {
if (*ptr != '/' || last != '/')
fullname[j++] = *ptr;
last = *ptr;
}
return fullname;
}
/*-------------------------------------------------------------------------
* Function: h5_fileaccess
*
* Purpose: Returns a file access template which is the default template
* but with a file driver set according to the constant or
* environment variable HDF5_DRIVER
*
* Return: Success: A file access property list
*
* Failure: -1
*
* Programmer: Robb Matzke
* Thursday, November 19, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
hid_t
h5_fileaccess(void)
{
const char *val = NULL;
const char *name;
char s[1024];
hid_t fapl = -1;
/* First use the environment variable, then the constant */
val = HDgetenv("HDF5_DRIVER");
#ifdef HDF5_DRIVER
if (!val) val = HDF5_DRIVER;
#endif
if ((fapl=H5Pcreate(H5P_FILE_ACCESS))<0) return -1;
if (!val || !*val) return fapl; /*use default*/
HDstrncpy(s, val, sizeof s);
s[sizeof(s)-1] = '\0';
if (NULL==(name=HDstrtok(s, " \t\n\r"))) return fapl;
if (!HDstrcmp(name, "sec2")) {
/* Unix read() and write() system calls */
if (H5Pset_fapl_sec2(fapl)<0) return -1;
} else if (!HDstrcmp(name, "stdio")) {
/* Standard C fread() and fwrite() system calls */
if (H5Pset_fapl_stdio(fapl)<0) return -1;
} else if (!HDstrcmp(name, "core")) {
/* In-core temporary file with 1MB increment */
if (H5Pset_fapl_core(fapl, 1024*1024, FALSE)<0) return -1;
} else if (!HDstrcmp(name, "split")) {
/* Split meta data and raw data each using default driver */
if (H5Pset_fapl_split(fapl,
"-m.h5", H5P_DEFAULT,
"-r.h5", H5P_DEFAULT)<0)
return -1;
} else if (!HDstrcmp(name, "multi")) {
/* Multi-file driver, general case of the split driver */
H5FD_mem_t memb_map[H5FD_MEM_NTYPES];
hid_t memb_fapl[H5FD_MEM_NTYPES];
const char *memb_name[H5FD_MEM_NTYPES];
char sv[H5FD_MEM_NTYPES][1024];
haddr_t memb_addr[H5FD_MEM_NTYPES];
H5FD_mem_t mt;
HDmemset(memb_map, 0, sizeof memb_map);
HDmemset(memb_fapl, 0, sizeof memb_fapl);
HDmemset(memb_name, 0, sizeof memb_name);
HDmemset(memb_addr, 0, sizeof memb_addr);
assert(HDstrlen(multi_letters)==H5FD_MEM_NTYPES);
for (mt=H5FD_MEM_DEFAULT; mt<H5FD_MEM_NTYPES; H5_INC_ENUM(H5FD_mem_t,mt)) {
memb_fapl[mt] = H5P_DEFAULT;
sprintf(sv[mt], "%%s-%c.h5", multi_letters[mt]);
memb_name[mt] = sv[mt];
memb_addr[mt] = MAX(mt-1,0)*(HADDR_MAX/10);
}
if (H5Pset_fapl_multi(fapl, memb_map, memb_fapl, memb_name,
memb_addr, FALSE)<0) {
return -1;
}
} else if (!HDstrcmp(name, "family")) {
hsize_t fam_size = 100*1024*1024; /*100 MB*/
/* Family of files, each 1MB and using the default driver */
if ((val=HDstrtok(NULL, " \t\n\r")))
fam_size = (hsize_t)(HDstrtod(val, NULL) * 1024*1024);
if (H5Pset_fapl_family(fapl, fam_size, H5P_DEFAULT)<0)
return -1;
} else if (!HDstrcmp(name, "log")) {
unsigned log_flags = H5FD_LOG_LOC_IO;
/* Log file access */
if ((val = HDstrtok(NULL, " \t\n\r")))
log_flags = (unsigned)HDstrtol(val, NULL, 0);
if (H5Pset_fapl_log(fapl, NULL, log_flags, 0) < 0)
return -1;
} else {
/* Unknown driver */
return -1;
}
return fapl;
}
/*-------------------------------------------------------------------------
* Function: h5_no_hwconv
*
* Purpose: Turn off hardware data type conversions.
*
* Return: void
*
* Programmer: Robb Matzke
* Friday, November 20, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
void
h5_no_hwconv(void)
{
H5Tunregister(H5T_PERS_HARD, NULL, -1, -1, NULL);
}
/*-------------------------------------------------------------------------
* Function: h5_show_hostname
*
* Purpose: Show hostname. Show process ID if in MPI environment.
*
* Return: void
*
* Programmer: Albert Cheng
* 2002/04/22
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
void
h5_show_hostname(void)
{
char hostname[80];
#ifdef WIN32
WSADATA wsaData;
int err;
#endif
/* try show the process or thread id in multiple processes cases*/
#ifdef H5_HAVE_PARALLEL
{
int mpi_rank, mpi_initialized;
MPI_Initialized(&mpi_initialized);
if (mpi_initialized){
MPI_Comm_rank(MPI_COMM_WORLD,&mpi_rank);
printf("MPI-process %d.", mpi_rank);
}else
printf("thread 0.");
}
#elif defined(H5_HAVE_THREADSAFE)
#ifdef WIN32
printf("some thread: no way to know the thread number from pthread on windows.");
#else
printf("thread %d.", (int)pthread_self());
#endif
#else
printf("thread 0.");
#endif
#ifdef WIN32
err = WSAStartup( MAKEWORD(2,2), &wsaData );
if ( err != 0 ) {
/* could not find a usable WinSock DLL */
return;
}
/* Confirm that the WinSock DLL supports 2.2.*/
/* Note that if the DLL supports versions greater */
/* than 2.2 in addition to 2.2, it will still return */
/* 2.2 in wVersion since that is the version we */
/* requested. */
if ( LOBYTE( wsaData.wVersion ) != 2 ||
HIBYTE( wsaData.wVersion ) != 2 ) {
/* could not find a usable WinSock DLL */
WSACleanup( );
return;
}
#endif
#ifdef H5_HAVE_GETHOSTNAME
if (gethostname(hostname, 80) < 0){
printf(" gethostname failed\n");
}
else
printf(" hostname=%s\n", hostname);
#else
printf(" gethostname not supported\n");
#endif
#ifdef WIN32
WSACleanup();
#endif
}
#ifdef H5_HAVE_PARALLEL
/*
* Function: h5_set_info_object
* Purpose: Process environment variables setting to set up MPI Info
* object.
* Return: 0 if all is fine; otherwise non-zero.
* Programmer: Albert Cheng, 2002/05/21.
* Modifications:
* Bill Wendling, 2002/05/31
* Modified so that the HDF5_MPI_INFO environment variable can
* be a semicolon separated list of "key=value" pairings. Most
* of the code is to remove any whitespaces which might be
* surrounding the "key=value" pairs.
*/
int
h5_set_info_object(void)
{
char *envp; /* environment pointer */
int ret_value=0;
/* handle any MPI INFO hints via $HDF5_MPI_INFO */
if ((envp = getenv("HDF5_MPI_INFO")) != NULL){
char *next, *valp;
valp = envp = next = HDstrdup(envp);
/* create an INFO object if not created yet */
if (h5_io_info_g == MPI_INFO_NULL)
MPI_Info_create(&h5_io_info_g);
do {
size_t len;
char *key_val, *endp, *namep;
if (*valp == ';')
valp++;
/* copy key/value pair into temporary buffer */
len = strcspn(valp, ";");
next = &valp[len];
key_val = calloc(1, len + 1);
/* increment the next pointer past the terminating semicolon */
if (*next == ';')
++next;
namep = HDstrncpy(key_val, valp, len);
/* pass up any beginning whitespaces */
while (*namep && (*namep == ' ' || *namep == '\t'))
namep++;
/* eat up any ending white spaces */
endp = &namep[strlen(namep) - 1];
while (endp && (*endp == ' ' || *endp == '\t'))
*endp-- = '\0';
/* find the '=' */
valp = HDstrchr(namep, '=');
if (valp != NULL) { /* it's a valid key/value pairing */
char *tmp_val = valp + 1;
/* change '=' to \0, move valp down one */
*valp-- = '\0';
/* eat up ending whitespace on the "key" part */
while (*valp == ' ' || *valp == '\t')
*valp-- = '\0';
valp = tmp_val;
/* eat up beginning whitespace on the "value" part */
while (*valp == ' ' || *valp == '\t')
*valp++ = '\0';
/* actually set the darned thing */
if (MPI_SUCCESS != MPI_Info_set(h5_io_info_g, namep, valp)) {
printf("MPI_Info_set failed\n");
ret_value = -1;
}
}
valp = next;
HDfree(key_val);
} while (next && *next);
HDfree(envp);
}
return ret_value;
}
/*
* Function: h5_dump_info_object
* Purpose: Display content of an MPI Info object
* Return: void
* Programmer: Albert Cheng 2002/05/21
* Modifications:
*/
void
h5_dump_info_object(MPI_Info info)
{
char key[MPI_MAX_INFO_KEY+1];
char value[MPI_MAX_INFO_VAL+1];
int flag;
int i, nkeys;
printf("Dumping MPI Info Object(%d) (up to %d bytes per item):\n", (int)info,
MPI_MAX_INFO_VAL);
if (info==MPI_INFO_NULL){
printf("object is MPI_INFO_NULL\n");
}
else {
MPI_Info_get_nkeys(info, &nkeys);
printf("object has %d items\n", nkeys);
for (i=0; i<nkeys; i++){
MPI_Info_get_nthkey(info, i, key);
MPI_Info_get(info, key, MPI_MAX_INFO_VAL, value, &flag);
printf("%s=%s\n", key, value);
}
}
}
#endif /* H5_HAVE_PARALLEL */
/*-------------------------------------------------------------------------
* Function: h5_get_file_size
*
* Purpose: Get the current size of a file (in bytes)
*
* Return: Success: Size of file in bytes (could be 0)
* Failure: 0
*
* Programmer: Quincey Koziol
* Saturday, March 22, 2003
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
h5_stat_size_t
h5_get_file_size(const char *filename)
{
h5_stat_t sb;
/* Get the file's statistics */
if (HDstat(filename, &sb)>=0)
return((h5_stat_size_t)sb.st_size);
return(0);
} /* end get_file_size() */
/*
* This routine is designed to provide equivalent functionality to 'printf'
* and allow easy replacement for environments which don't have stdin/stdout
* available. (i.e. Windows & the Mac)
*/
int
print_func(const char *format, ...)
{
va_list arglist;
int ret_value;
va_start(arglist, format);
ret_value = vprintf(format, arglist);
va_end(arglist);
return ret_value;
}
#ifdef H5_HAVE_FILTER_SZIP
/*-------------------------------------------------------------------------
* Function: h5_szip_can_encode
*
* Purpose: Retrieve the filter config flags for szip, tell if
* encoder is available.
*
* Return: 1: decode+encode is enabled
* 0: only decode is enabled
* -1: other
*
* Programmer:
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
int h5_szip_can_encode(void )
{
herr_t status;
unsigned int filter_config_flags;
status =H5Zget_filter_info(H5Z_FILTER_SZIP, &filter_config_flags);
if ((filter_config_flags &
(H5Z_FILTER_CONFIG_ENCODE_ENABLED|H5Z_FILTER_CONFIG_DECODE_ENABLED)) == 0) {
/* filter present but neither encode nor decode is supported (???) */
return -1;
} else if ((filter_config_flags &
(H5Z_FILTER_CONFIG_ENCODE_ENABLED|H5Z_FILTER_CONFIG_DECODE_ENABLED)) ==
H5Z_FILTER_CONFIG_DECODE_ENABLED) {
/* decoder only: read but not write */
return 0;
} else if ((filter_config_flags &
(H5Z_FILTER_CONFIG_ENCODE_ENABLED|H5Z_FILTER_CONFIG_DECODE_ENABLED)) ==
H5Z_FILTER_CONFIG_ENCODE_ENABLED) {
/* encoder only: write but not read (???) */
return -1;
} else if ((filter_config_flags &
(H5Z_FILTER_CONFIG_ENCODE_ENABLED|H5Z_FILTER_CONFIG_DECODE_ENABLED)) ==
(H5Z_FILTER_CONFIG_ENCODE_ENABLED|H5Z_FILTER_CONFIG_DECODE_ENABLED)) {
return 1;
}
return(-1);
}
#endif /* H5_HAVE_FILTER_SZIP */
#ifdef H5_HAVE_PARALLEL
/*-------------------------------------------------------------------------
* Function: getenv_all
*
* Purpose: Used to get the environment that the root MPI task has.
* name specifies which environment variable to look for
* val is the string to which the value of that environment
* variable will be copied.
*
* NOTE: The pointer returned by this function is only
* valid until the next call to getenv_all and the data
* stored there must be copied somewhere else before any
* further calls to getenv_all take place.
*
* Return: pointer to a string containing the value of the environment variable
* NULL if the varialbe doesn't exist in task 'root's environment.
*
* Programmer: Leon Arber
* 4/4/05
*
* Modifications:
* Use original getenv if MPI is not initialized. This happens
* one uses the PHDF5 library to build a serial nature code.
* Albert 2006/04/07
*
*-------------------------------------------------------------------------
*/
char* getenv_all(MPI_Comm comm, int root, const char* name)
{
int mpi_size, mpi_rank, mpi_initialized;
int len;
static char* env = NULL;
MPI_Status Status;
assert(name);
MPI_Initialized(&mpi_initialized);
if (!mpi_initialized){
/* use original getenv */
if(env)
HDfree(env);
env = HDgetenv(name);
}else{
MPI_Comm_rank(comm, &mpi_rank);
MPI_Comm_size(comm, &mpi_size);
assert(root < mpi_size);
/* The root task does the getenv call
* and sends the result to the other tasks */
if(mpi_rank == root)
{
env = HDgetenv(name);
if(env)
{
len = HDstrlen(env);
MPI_Bcast(&len, 1, MPI_INT, root, comm);
MPI_Bcast(env, len, MPI_CHAR, root, comm);
}
else{
/* len -1 indicates that the variable was not in the environment */
len = -1;
MPI_Bcast(&len, 1, MPI_INT, root, comm);
}
}
else
{
MPI_Bcast(&len, 1, MPI_INT, root, comm);
if(len >= 0)
{
if(env == NULL)
env = (char*) HDmalloc(len+1);
else if(strlen(env) < len)
env = (char*) HDrealloc(env, len+1);
MPI_Bcast(env, len, MPI_CHAR, root, comm);
env[len] = '\0';
}
else
{
if(env)
HDfree(env);
env = NULL;
}
}
}
#ifndef NDEBUG
MPI_Barrier(comm);
#endif
return env;
}
#endif
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