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/*
This file is part of GNUnet
(C) 2008--2012 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file testbed/testbed_api_operations.c
* @brief functions to manage operation queues
* @author Christian Grothoff
*/
#include "platform.h"
#include "testbed_api_operations.h"
/**
* Opaque handle to an abstract operation to be executed by the testing framework.
*/
struct GNUNET_TESTBED_Operation
{
/**
* Function to call when we have the resources to begin the operation.
*/
OperationStart start;
/**
* Function to call to clean up after the operation (which may or may
* not have been started yet).
*/
OperationRelease release;
/**
* Closure for callbacks.
*/
void *cb_cls;
// FIXME!
};
/**
* Queue of operations where we can only support a certain
* number of concurrent operations of a particular type.
*/
struct OperationQueue
{
/**
* Maximum number of operationst that can be concurrently
* active in this queue.
*/
unsigned int max_active;
// FIXME!
};
/**
* Create an operation queue.
*
* @param max_active maximum number of operations in this
* queue that can be active in parallel at the same time
* @return handle to the queue
*/
struct OperationQueue *
GNUNET_TESTBED_operation_queue_create_ (unsigned int max_active)
{
struct OperationQueue *queue;
queue = GNUNET_malloc (sizeof (struct OperationQueue));
queue->max_active = max_active;
return queue;
}
/**
* Destroy an operation queue. The queue MUST be empty
* at this time.
*
* @param queue queue to destroy
*/
void
GNUNET_TESTBED_operation_queue_destroy_ (struct OperationQueue *queue)
{
GNUNET_break (0);
GNUNET_free (queue);
}
/**
* Add an operation to a queue. An operation can be in multiple
* queues at once. Once all queues permit the operation to become
* active, the operation will be activated. The actual activation
* will occur in a separate task (thus allowing multiple queue
* insertions to be made without having the first one instantly
* trigger the operation if the first queue has sufficient
* resources).
*
* @param queue queue to add the operation to
* @param operation operation to add to the queue
*/
void
GNUNET_TESTBED_operation_queue_insert_ (struct OperationQueue *queue,
struct GNUNET_TESTBED_Operation *operation)
{
GNUNET_break (0);
}
/**
* Remove an operation from a queue. This can be because the
* oeration was active and has completed (and the resources have
* been released), or because the operation was cancelled and
* thus scheduling the operation is no longer required.
*
* @param queue queue to add the operation to
* @param operation operation to add to the queue
*/
void
GNUNET_TESTBED_operation_queue_remove_ (struct OperationQueue *queue,
struct GNUNET_TESTBED_Operation *operation)
{
GNUNET_break (0);
}
/**
* An operation is 'done' (was cancelled or finished); remove
* it from the queues and release associated resources.
*
* @param operation operation that finished
*/
static void
operation_release (struct GNUNET_TESTBED_Operation *operation)
{
// call operation->release, remove from queues
GNUNET_break (0);
}
/**
* Cancel a pending operation. Releases all resources
* of the operation and will ensure that no event
* is generated for the operation. Does NOT guarantee
* that the operation will be fully undone (or that
* nothing ever happened).
*
* @param operation operation to cancel
*/
void
GNUNET_TESTBED_operation_cancel (struct GNUNET_TESTBED_Operation *operation)
{
// test that operation had not yet generated an event
GNUNET_break (0);
operation_release (operation);
}
/**
* Signal that the information from an operation has been fully
* processed. This function MUST be called for each event
* of type 'operation_finished' to fully remove the operation
* from the operation queue. After calling this function, the
* 'op_result' becomes invalid (!).
*
* @param operation operation to signal completion for
*/
void
GNUNET_TESTBED_operation_done (struct GNUNET_TESTBED_Operation *operation)
{
// test that operation was started and had generated an event
GNUNET_break (0);
operation_release (operation);
}
/* end of testbed_api_operations.c */
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