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[svn-r4091]

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Purpose:
    Use port hunting to test the Stream VFD
Description:
    The stream driver is tested by streaming data
    between two different processes on the local
    machine on a given default port.
    If this port is already is use, port hunting
    should find the next available port to use.
    The hostname/port information which is actually
    used by the sender is written to a temporary
    file which is then read by the receiver process
    to connect to the sender's port.

    For the purpose of testing I switched back
    the default port to use from 10007 to 5678
    which is at least already used by another
    service on modi4.
Platforms tested:
    x86 Linux, Irix 32/64 bit (modi4), Dec Alpha,
    Unicos on T3E, Hitachi SR8000, AIX on SP2
This commit is contained in:
Thomas Radke 2001-07-02 08:05:50 -05:00
parent 9f06972b48
commit 69b26f8ecb
1 changed files with 116 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

145
test/stream_test.c
View File

@ -17,15 +17,20 @@
/*
* This program tests the functionality of the Stream Virtual File Driver.
* 1. It spawns two new processes, a sender and a receiver.
* 2. The sender opens an HDF5 file for writing and writes
* a sample dataset to it.
* 2. The sender opens an HDF5 file for writing using the Stream driver.
* It will use a reserved port which should fail to be bound.
* Then it will try a couple of successive ports until bind succeeds.
* This final "hostname:port" information is written into a temporary
* file as a single line of text.
* The sender then writes a sample dataset to the HDF5 file.
* On closing the file the Stream VFD would send the file
* contents to any connected client.
* 3. The receiver serves as a client attempting to open an
* HDF5 file for reading. On opening the file the Stream VFD
* would establish a socket connection to the sender process,
* identified by its hostname (which is localhost in this example)
* and a port number, and read the file contents via this socket.
* identified by its hostname and a port number (which is obtained
* from the temporary text file the sender should have created),
* and read the file contents via this socket.
* Aftwerwards the dataset is read from the file into memory
* and verified.
* 4. The main program waits for termination of its two child
@ -60,11 +65,15 @@ int main (void)
#include <sys/wait.h>
#define DELAY 10 /* sleeping time in seconds */
#define RANK 2 /* sample dataset rank */
#define DIMS 50 /* sample dataset dimensions */
#define DATASETNAME "IntArray" /* sample dataset name */
#define FILENAME "localhost:10007" /* filename argument */
#define SLEEPTIME 10 /* sleeping time in seconds */
#define RANK 2 /* sample dataset rank */
#define DIMS 50 /* sample dataset dimensions */
#define DATASETNAME "IntArray" /* sample dataset name */
#define HOSTNAME "localhost" /* hostname of this machine */
#define PORT "5678" /* default port to use */
#define MAXHUNT 500 /* max number of ports to hunt */
#define HDF5_FILENAME HOSTNAME ":" PORT /* name of the streamed file */
#define TEMPFILENAME "stream_test.tmp" /* temporary filename */
static int sender (void)
@ -75,6 +84,8 @@ static int sender (void)
herr_t status;
hid_t fapl, file;
hid_t dataspace, dataset;
H5FD_stream_fapl_t stream_fapl;
FILE *tempfile;
/*
@ -87,7 +98,26 @@ static int sender (void)
return (-1);
}
status = H5Pset_fapl_stream (fapl, NULL);
/*
* Setup file access property list and select Stream VFD.
*
* - block increment for realloc() should be chosen by the driver
* - no external socket is provided (should be created internally)
* - do I/O on this processor on this socket
* - only one client is allowed to connect at a time
* - no READ broadcast function is provided (since we only send data)
* - if bind to default port (given in the filename argument) fails
* do port hunting on the following MAXHUNT ports
*/
stream_fapl.increment = 0;
stream_fapl.socket = H5FD_STREAM_INVALID_SOCKET;
stream_fapl.do_socket_io = 1;
stream_fapl.backlog = 1;
stream_fapl.broadcast_fn = NULL;
stream_fapl.broadcast_arg = NULL;
stream_fapl.maxhunt = MAXHUNT;
status = H5Pset_fapl_stream (fapl, &stream_fapl);
if (status < 0)
{
fprintf (stderr, "sender: couldn't set file access property list "
@ -134,17 +164,51 @@ static int sender (void)
* default file creation properties, and STREAM file
* access properties.
*/
printf (" sender: opening file '%s' for writing...\n", FILENAME);
file = H5Fcreate (FILENAME, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
printf (" sender: opening file on host '%s' port %s for writing...\n",
HOSTNAME, PORT);
file = H5Fcreate (HDF5_FILENAME, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
if (file < 0)
{
fprintf (stderr, "sender: couldn't create file for '%s'\n", FILENAME);
fprintf (stderr, "sender: couldn't create file on '%s' using port %s and "
"following %d\n", HOSTNAME, PORT, MAXHUNT);
free (data);
H5Sclose (dataspace);
H5Pclose (fapl);
return (-5);
}
/*
* Get the file access property list to find out what port is actually used.
*/
status = H5Pget_fapl_stream (fapl, &stream_fapl);
if (status < 0)
{
fprintf (stderr, "sender: couldn't get file access property list "
"for Stream VFD\n");
free (data);
H5Sclose (dataspace);
H5Pclose (fapl);
return (-6);
}
printf (" sender: using port %d...\n", (int) stream_fapl.port);
/*
* Write the "hostname:port" information to a temporary file
* which can be read by the receiver process.
*/
tempfile = fopen (TEMPFILENAME, "w");
if (tempfile == NULL)
{
fprintf (stderr, "sender: couldn't open temporary file to write "
"\"hostname:port\" information\n");
free (data);
H5Sclose (dataspace);
H5Pclose (fapl);
return (-7);
}
fprintf (tempfile, "%s:%d", HOSTNAME, (int) stream_fapl.port);
fclose (tempfile);
/*
* Create a new dataset within the file using defined dataspace and
* default dataset creation properties.
@ -158,14 +222,14 @@ static int sender (void)
H5Fclose (file);
H5Sclose (dataspace);
H5Pclose (fapl);
return (-6);
return (-8);
}
/*
* Write the data to the dataset using default transfer properties.
*/
printf (" sender: writing dataset '%s' of type INTEGER to file '%s'...\n",
DATASETNAME, FILENAME);
printf (" sender: writing dataset '%s' of type INTEGER to file '%s:%d'...\n",
DATASETNAME, HOSTNAME, (int) stream_fapl.port);
status = H5Dwrite (dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT,
data);
if (status < 0)
@ -176,16 +240,16 @@ static int sender (void)
H5Sclose (dataspace);
H5Pclose (fapl);
fprintf (stderr, "sender: couldn't write dataset\n");
return (-7);
return (-9);
}
/*
* Now give the receiver some time to connect before closing the file
* and releasing resources.
*/
printf (" sender: sleeping for %d seconds...\n", DELAY);
sleep (DELAY);
printf (" sender: closing file '%s'\n", FILENAME);
printf (" sender: sleeping for %d seconds...\n", SLEEPTIME);
sleep (SLEEPTIME);
printf (" sender: closing file '%s:%d'\n", HOSTNAME, (int) stream_fapl.port);
H5Sclose (dataspace);
H5Dclose (dataset);
H5Fclose (file);
@ -210,6 +274,8 @@ static int receiver (void)
int *data; /* read buffer */
int nerrors; /* total number of errors during verify */
int status; /* return code of HDF5 routines */
char filename[50]; /* filename of the streamed HDF5 file */
FILE *tempfile; /* descriptor for temporary file */
/*
@ -227,21 +293,42 @@ static int receiver (void)
{
fprintf (stderr, "receiver: couldn't set file access property list "
"for Stream VFD\n");
H5Pclose (fapl);
return (-2);
}
/*
* Now give the sender some time to open the file and accepting connections.
*/
printf (" receiver: sleeping for %d seconds...\n", DELAY / 2);
sleep (DELAY / 2);
printf (" receiver: opening file '%s' for reading...\n", FILENAME);
file = H5Fopen (FILENAME, H5F_ACC_RDONLY, fapl);
printf (" receiver: sleeping for %d seconds...\n", SLEEPTIME / 2);
sleep (SLEEPTIME / 2);
/*
* Read the "hostname:port" information from the temporary file
* the sender should have created.
*/
tempfile = fopen (TEMPFILENAME, "r");
if (tempfile == NULL)
{
fprintf (stderr, "receiver: couldn't open temporary file to read "
"\"hostname:port\" information\n");
H5Pclose (fapl);
return (-3);
}
fgets (filename, sizeof (filename) - 1, tempfile);
fclose (tempfile);
unlink (TEMPFILENAME);
/*
* Open the streamed HDF5 file for reading.
*/
printf (" receiver: opening file '%s' for reading...\n", filename);
file = H5Fopen (filename, H5F_ACC_RDONLY, fapl);
H5Pclose (fapl);
if (file < 0)
{
fprintf (stderr, "receiver: couldn't open file from '%s'\n", FILENAME);
return (-3);
fprintf (stderr, "receiver: couldn't open file from '%s'\n", filename);
return (-4);
}
/*
@ -252,7 +339,7 @@ static int receiver (void)
if (dataset < 0)
{
fprintf (stderr, "receiver: couldn't open dataset '%s'\n", DATASETNAME);
return (-4);
return (-5);
}
/*
@ -291,7 +378,7 @@ static int receiver (void)
/*
* Read dataset from file into memory.
*/
data = (int *) malloc ((size_t)(nelems * sizeof (int)));
data = (int *) malloc ((size_t) nelems * sizeof (int));
status = H5Dread (dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT,
data);
H5Dclose (dataset);
@ -299,7 +386,7 @@ static int receiver (void)
/*
* Close the file.
*/
printf (" receiver: closing file '%s'...\n", FILENAME);
printf (" receiver: closing file '%s'...\n", filename);
H5Fclose (file);
/*