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/*@@
@file AdvertisedFiles.c
@date Mon 18 Sep 2000
@author Thomas Radke
@desc
IOUtil file advertising stuff.
@enddesc
@history
@endhistory
@@*/
#include <stdlib.h>
#include "cctk.h"
#include "StoreNamedData.h"
#include "ioGH.h"
#include "ioutil_AdvertisedFiles.h"
static const char *rcsid = "$Header$";
CCTK_FILEVERSION(CactusBase_IOUtil_AdvertisedFiles_c)
/********************************************************************
********************* Local Data *****************************
********************************************************************/
/* database holding all registered listeners for file advertising */
static pNamedData *listener_DB = NULL;
/*@@
@routine IOUtil_RegisterAdvertisedFileListener
@date Wed May 17 2000
@author Thomas Radke
@desc
Registers a listener with its callbacks for
advertised file handling
@enddesc
@history
@endhistory
@var GH
@vdesc pointer to grid hierarchy
@vtype const cGH *
@vio in
@endvar
@var listener
@vdesc identification of the listener to be registered
@vtype const char *
@vio in
@endvar
@var callbacks
@vdesc structure containing the listener's callback routines
@vtype const ioAdvertisedFileListenerCallbacks *
@vio in
@endvar
@returntype int
@returndesc This routine returns
0 on success
-1 if memory allocation failed or NULL pointers were passed
@endreturndesc
@@*/
int IOUtil_RegisterAdvertisedFileListener (const cGH *GH, const char *listener,
const ioAdvertisedFileListenerCallbacks *callbacks)
{
int retval = -1;
ioAdvertisedFileListenerCallbacks *new_callbacks;
/* prevent compiler warning about unused parameter */
GH = GH;
if (listener && callbacks)
{
new_callbacks = (ioAdvertisedFileListenerCallbacks *)
malloc (sizeof (ioAdvertisedFileListenerCallbacks));
if (new_callbacks)
{
*new_callbacks = *callbacks;
retval = StoreNamedData (&listener_DB, listener, new_callbacks);
if (retval)
free (new_callbacks);
}
}
return (retval);
}
/*@@
@routine IOUtil_AdvertiseFile
@date Wed May 17 2000
@author Thomas Radke
@desc
Adds a filename to the list of advertised files for downloading.
The routine calls all listeners which are currently registered
for advertised file handling.
@enddesc
@history
@endhistory
@var GH
@vdesc pointer to grid hierarchy
@vtype const cGH *
@vio in
@endvar
@var filename
@vdesc name of the file to advertise
@vtype const char *
@vio in
@endvar
@var description
@vdesc structure which describes the file
@vtype const ioAdvertisedFileDesc *
@vio in
@endvar
@returntype int
@returndesc This routine returns the logically OR'ed return values
of all listeners' advertise callbacks called.
@endreturndesc
@@*/
int IOUtil_AdvertiseFile (const cGH *GH, const char *filename,
const ioAdvertisedFileDesc *description)
{
int retval = 0;
pNamedData *listener;
ioAdvertisedFileListenerCallbacks *callbacks;
/* get the listener database from IOUtil's GH extension */
listener = listener_DB;
/* loop through all listeners' advertise() callbacks */
while (listener)
{
callbacks = (ioAdvertisedFileListenerCallbacks *) listener->data;
if (callbacks && callbacks->advertise)
retval |= (callbacks->advertise) (GH, filename, description);
listener = listener->next;
}
return (retval);
}
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