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authorRene Mayrhofer <rene@mayrhofer.eu.org>2010-11-28 11:42:20 +0000
committerRene Mayrhofer <rene@mayrhofer.eu.org>2010-11-28 11:42:20 +0000
commitf73fba54dc8b30c6482e1e8abf15bbf455592fcd (patch)
treea449515607c5e51a5c703d7a9b1149c9e4a11560 /src/libcharon/processing
parentb8064f4099997a9e2179f3ad4ace605f5ccac3a1 (diff)
downloadvyos-strongswan-f73fba54dc8b30c6482e1e8abf15bbf455592fcd.tar.gz
vyos-strongswan-f73fba54dc8b30c6482e1e8abf15bbf455592fcd.zip
[svn-upgrade] new version strongswan (4.5.0)
Diffstat (limited to 'src/libcharon/processing')
-rw-r--r--src/libcharon/processing/jobs/acquire_job.h2
-rw-r--r--src/libcharon/processing/jobs/callback_job.c271
-rw-r--r--src/libcharon/processing/jobs/callback_job.h118
-rw-r--r--src/libcharon/processing/jobs/delete_child_sa_job.h2
-rw-r--r--src/libcharon/processing/jobs/delete_ike_sa_job.h2
-rw-r--r--src/libcharon/processing/jobs/inactivity_job.c10
-rw-r--r--src/libcharon/processing/jobs/inactivity_job.h2
-rw-r--r--src/libcharon/processing/jobs/initiate_mediation_job.h2
-rw-r--r--src/libcharon/processing/jobs/job.h52
-rw-r--r--src/libcharon/processing/jobs/mediation_job.h2
-rw-r--r--src/libcharon/processing/jobs/migrate_job.h2
-rw-r--r--src/libcharon/processing/jobs/process_message_job.h2
-rw-r--r--src/libcharon/processing/jobs/rekey_child_sa_job.h2
-rw-r--r--src/libcharon/processing/jobs/rekey_ike_sa_job.h2
-rw-r--r--src/libcharon/processing/jobs/retransmit_job.h2
-rw-r--r--src/libcharon/processing/jobs/roam_job.h2
-rw-r--r--src/libcharon/processing/jobs/send_dpd_job.h2
-rw-r--r--src/libcharon/processing/jobs/send_keepalive_job.h2
-rw-r--r--src/libcharon/processing/jobs/update_sa_job.h2
-rw-r--r--src/libcharon/processing/processor.c273
-rw-r--r--src/libcharon/processing/processor.h94
-rw-r--r--src/libcharon/processing/scheduler.c358
-rw-r--r--src/libcharon/processing/scheduler.h130
23 files changed, 21 insertions, 1315 deletions
diff --git a/src/libcharon/processing/jobs/acquire_job.h b/src/libcharon/processing/jobs/acquire_job.h
index eff79a9b0..2b5bf4805 100644
--- a/src/libcharon/processing/jobs/acquire_job.h
+++ b/src/libcharon/processing/jobs/acquire_job.h
@@ -15,7 +15,7 @@
/**
* @defgroup acquire_job acquire_job
- * @{ @ingroup jobs
+ * @{ @ingroup cjobs
*/
#ifndef ACQUIRE_JOB_H_
diff --git a/src/libcharon/processing/jobs/callback_job.c b/src/libcharon/processing/jobs/callback_job.c
deleted file mode 100644
index 45e49112e..000000000
--- a/src/libcharon/processing/jobs/callback_job.c
+++ /dev/null
@@ -1,271 +0,0 @@
-/*
- * Copyright (C) 2009 Tobias Brunner
- * Copyright (C) 2007 Martin Willi
- * Hochschule fuer Technik Rapperswil
- *
- * This program 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 2 of the License, or (at your
- * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * This program 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.
- */
-
-#include "callback_job.h"
-
-#include <semaphore.h>
-
-#include <daemon.h>
-#include <threading/thread.h>
-#include <threading/condvar.h>
-#include <threading/mutex.h>
-
-typedef struct private_callback_job_t private_callback_job_t;
-
-/**
- * Private data of an callback_job_t Object.
- */
-struct private_callback_job_t {
- /**
- * Public callback_job_t interface.
- */
- callback_job_t public;
-
- /**
- * Callback to call on execution
- */
- callback_job_cb_t callback;
-
- /**
- * parameter to supply to callback
- */
- void *data;
-
- /**
- * cleanup function for data
- */
- callback_job_cleanup_t cleanup;
-
- /**
- * thread of the job, if running
- */
- thread_t *thread;
-
- /**
- * mutex to access jobs interna
- */
- mutex_t *mutex;
-
- /**
- * list of asociated child jobs
- */
- linked_list_t *children;
-
- /**
- * parent of this job, or NULL
- */
- private_callback_job_t *parent;
-
- /**
- * TRUE if the job got cancelled
- */
- bool cancelled;
-
- /**
- * condvar to synchronize the cancellation/destruction of the job
- */
- condvar_t *destroyable;
-
- /**
- * semaphore to synchronize the termination of the assigned thread.
- *
- * separately allocated during cancellation, so that we can wait on it
- * without risking that it gets freed too early during destruction.
- */
- sem_t *terminated;
-};
-
-/**
- * unregister a child from its parent, if any.
- * note: this->mutex has to be locked
- */
-static void unregister(private_callback_job_t *this)
-{
- if (this->parent)
- {
- this->parent->mutex->lock(this->parent->mutex);
- if (this->parent->cancelled && !this->cancelled)
- {
- /* if the parent has been cancelled but we have not yet, we do not
- * unregister until we got cancelled by the parent. */
- this->parent->mutex->unlock(this->parent->mutex);
- this->destroyable->wait(this->destroyable, this->mutex);
- this->parent->mutex->lock(this->parent->mutex);
- }
- this->parent->children->remove(this->parent->children, this, NULL);
- this->parent->mutex->unlock(this->parent->mutex);
- this->parent = NULL;
- }
-}
-
-/**
- * Implements job_t.destroy.
- */
-static void destroy(private_callback_job_t *this)
-{
- this->mutex->lock(this->mutex);
- unregister(this);
- if (this->cleanup)
- {
- this->cleanup(this->data);
- }
- if (this->terminated)
- {
- sem_post(this->terminated);
- }
- this->children->destroy(this->children);
- this->destroyable->destroy(this->destroyable);
- this->mutex->unlock(this->mutex);
- this->mutex->destroy(this->mutex);
- free(this);
-}
-
-/**
- * Implementation of callback_job_t.cancel.
- */
-static void cancel(private_callback_job_t *this)
-{
- callback_job_t *child;
- sem_t *terminated = NULL;
-
- this->mutex->lock(this->mutex);
- this->cancelled = TRUE;
- /* terminate children */
- while (this->children->get_first(this->children, (void**)&child) == SUCCESS)
- {
- this->mutex->unlock(this->mutex);
- child->cancel(child);
- this->mutex->lock(this->mutex);
- }
- if (this->thread)
- {
- /* terminate the thread, if there is currently one executing the job.
- * we wait for its termination using a semaphore */
- this->thread->cancel(this->thread);
- terminated = this->terminated = malloc_thing(sem_t);
- sem_init(terminated, 0, 0);
- }
- else
- {
- /* if the job is currently queued, it gets terminated later.
- * we can't wait, because it might not get executed at all.
- * we also unregister the queued job manually from its parent (the
- * others get unregistered during destruction) */
- unregister(this);
- }
- this->destroyable->signal(this->destroyable);
- this->mutex->unlock(this->mutex);
-
- if (terminated)
- {
- sem_wait(terminated);
- sem_destroy(terminated);
- free(terminated);
- }
-}
-
-/**
- * Implementation of job_t.execute.
- */
-static void execute(private_callback_job_t *this)
-{
- bool cleanup = FALSE, requeue = FALSE;
-
- thread_cleanup_push((thread_cleanup_t)destroy, this);
-
- this->mutex->lock(this->mutex);
- this->thread = thread_current();
- this->mutex->unlock(this->mutex);
-
- while (TRUE)
- {
- this->mutex->lock(this->mutex);
- if (this->cancelled)
- {
- this->mutex->unlock(this->mutex);
- cleanup = TRUE;
- break;
- }
- this->mutex->unlock(this->mutex);
- switch (this->callback(this->data))
- {
- case JOB_REQUEUE_DIRECT:
- continue;
- case JOB_REQUEUE_FAIR:
- {
- requeue = TRUE;
- break;
- }
- case JOB_REQUEUE_NONE:
- default:
- {
- cleanup = TRUE;
- break;
- }
- }
- break;
- }
- this->mutex->lock(this->mutex);
- this->thread = NULL;
- this->mutex->unlock(this->mutex);
- /* manually create a cancellation point to avoid that a cancelled thread
- * goes back into the thread pool */
- thread_cancellation_point();
- if (requeue)
- {
- charon->processor->queue_job(charon->processor,
- &this->public.job_interface);
- }
- thread_cleanup_pop(cleanup);
-}
-
-/*
- * Described in header.
- */
-callback_job_t *callback_job_create(callback_job_cb_t cb, void *data,
- callback_job_cleanup_t cleanup,
- callback_job_t *parent)
-{
- private_callback_job_t *this = malloc_thing(private_callback_job_t);
-
- /* interface functions */
- this->public.job_interface.execute = (void (*) (job_t *)) execute;
- this->public.job_interface.destroy = (void (*) (job_t *)) destroy;
- this->public.cancel = (void(*)(callback_job_t*))cancel;
-
- /* private variables */
- this->mutex = mutex_create(MUTEX_TYPE_DEFAULT);
- this->callback = cb;
- this->data = data;
- this->cleanup = cleanup;
- this->thread = 0;
- this->children = linked_list_create();
- this->parent = (private_callback_job_t*)parent;
- this->cancelled = FALSE;
- this->destroyable = condvar_create(CONDVAR_TYPE_DEFAULT);
- this->terminated = NULL;
-
- /* register us at parent */
- if (parent)
- {
- this->parent->mutex->lock(this->parent->mutex);
- this->parent->children->insert_last(this->parent->children, this);
- this->parent->mutex->unlock(this->parent->mutex);
- }
-
- return &this->public;
-}
-
diff --git a/src/libcharon/processing/jobs/callback_job.h b/src/libcharon/processing/jobs/callback_job.h
deleted file mode 100644
index 62da1edd1..000000000
--- a/src/libcharon/processing/jobs/callback_job.h
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
- * Copyright (C) 2007 Martin Willi
- * Hochschule fuer Technik Rapperswil
- *
- * This program 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 2 of the License, or (at your
- * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * This program 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.
- */
-
-/**
- * @defgroup callback_job callback_job
- * @{ @ingroup jobs
- */
-
-#ifndef CALLBACK_JOB_H_
-#define CALLBACK_JOB_H_
-
-typedef struct callback_job_t callback_job_t;
-
-#include <library.h>
-#include <processing/jobs/job.h>
-
-
-typedef enum job_requeue_t job_requeue_t;
-
-/**
- * Job requeueing policy
- *
- * The job requeueing policy defines how a job is handled when the callback
- * function returns.
- */
-enum job_requeue_t {
-
- /**
- * Do not requeue job, destroy it
- */
- JOB_REQUEUE_NONE,
-
- /**
- * Reque the job fairly, meaning it has to requeue as any other job
- */
- JOB_REQUEUE_FAIR,
-
- /**
- * Reexecute the job directly, without the need of requeueing it
- */
- JOB_REQUEUE_DIRECT,
-};
-
-/**
- * The callback function to use for the callback job.
- *
- * This is the function to use as callback for a callback job. It receives
- * a parameter supplied to the callback jobs constructor.
- *
- * @param data param supplied to job
- * @return requeing policy how to requeue the job
- */
-typedef job_requeue_t (*callback_job_cb_t)(void *data);
-
-/**
- * Cleanup function to use for data cleanup.
- *
- * The callback has an optional user argument which receives data. However,
- * this data may be cleaned up if it is allocated. This is the function
- * to supply to the constructor.
- *
- * @param data param supplied to job
- * @return requeing policy how to requeue the job
- */
-typedef void (*callback_job_cleanup_t)(void *data);
-
-/**
- * Class representing an callback Job.
- *
- * This is a special job which allows a simple callback function to
- * be executed by a thread of the thread pool. This allows simple execution
- * of asynchronous methods, without to manage threads.
- */
-struct callback_job_t {
- /**
- * The job_t interface.
- */
- job_t job_interface;
-
- /**
- * Cancel the job's thread and wait for its termination. This only works
- * reliably for jobs that always use JOB_REQUEUE_FAIR or JOB_REQUEUE_DIRECT,
- * otherwise the job may already be destroyed when cancel is called. */
- void (*cancel)(callback_job_t *this);
-};
-
-/**
- * Creates a callback job.
- *
- * The cleanup function is called when the job gets destroyed to destroy
- * the associated data.
- * If parent is not NULL, the specified job gets an association. Whenever
- * the parent gets cancelled (or runs out), all of its children are cancelled,
- * too.
- *
- * @param cb callback to call from the processor
- * @param data user data to supply to callback
- * @param cleanup destructor for data on destruction, or NULL
- * @param parent parent of this job
- * @return callback_job_t object
- */
-callback_job_t *callback_job_create(callback_job_cb_t cb, void *data,
- callback_job_cleanup_t cleanup,
- callback_job_t *parent);
-
-#endif /** CALLBACK_JOB_H_ @}*/
diff --git a/src/libcharon/processing/jobs/delete_child_sa_job.h b/src/libcharon/processing/jobs/delete_child_sa_job.h
index 662a7b7c7..fc0e2b518 100644
--- a/src/libcharon/processing/jobs/delete_child_sa_job.h
+++ b/src/libcharon/processing/jobs/delete_child_sa_job.h
@@ -15,7 +15,7 @@
/**
* @defgroup delete_child_sa_job delete_child_sa_job
- * @{ @ingroup jobs
+ * @{ @ingroup cjobs
*/
#ifndef DELETE_CHILD_SA_JOB_H_
diff --git a/src/libcharon/processing/jobs/delete_ike_sa_job.h b/src/libcharon/processing/jobs/delete_ike_sa_job.h
index f641deea3..ae06b9cfc 100644
--- a/src/libcharon/processing/jobs/delete_ike_sa_job.h
+++ b/src/libcharon/processing/jobs/delete_ike_sa_job.h
@@ -16,7 +16,7 @@
/**
* @defgroup delete_child_sa_job delete_child_sa_job
- * @{ @ingroup jobs
+ * @{ @ingroup cjobs
*/
#ifndef DELETE_IKE_SA_JOB_H_
diff --git a/src/libcharon/processing/jobs/inactivity_job.c b/src/libcharon/processing/jobs/inactivity_job.c
index 13fc5e3d0..1371000eb 100644
--- a/src/libcharon/processing/jobs/inactivity_job.c
+++ b/src/libcharon/processing/jobs/inactivity_job.c
@@ -87,7 +87,7 @@ METHOD(job_t, execute, void,
}
else
{
- charon->scheduler->schedule_job(charon->scheduler,
+ lib->scheduler->schedule_job(lib->scheduler,
&this->public.job_interface, this->timeout - diff);
rescheduled = TRUE;
}
@@ -136,9 +136,11 @@ inactivity_job_t *inactivity_job_create(u_int32_t reqid, u_int32_t timeout,
private_inactivity_job_t *this;
INIT(this,
- .public.job_interface = {
- .execute = _execute,
- .destroy = _destroy,
+ .public = {
+ .job_interface = {
+ .execute = _execute,
+ .destroy = _destroy,
+ },
},
.reqid = reqid,
.timeout = timeout,
diff --git a/src/libcharon/processing/jobs/inactivity_job.h b/src/libcharon/processing/jobs/inactivity_job.h
index 9c9daced8..890f7704b 100644
--- a/src/libcharon/processing/jobs/inactivity_job.h
+++ b/src/libcharon/processing/jobs/inactivity_job.h
@@ -15,7 +15,7 @@
/**
* @defgroup inactivity_job inactivity_job
- * @{ @ingroup jobs
+ * @{ @ingroup cjobs
*/
#ifndef INACTIVITY_JOB_H_
diff --git a/src/libcharon/processing/jobs/initiate_mediation_job.h b/src/libcharon/processing/jobs/initiate_mediation_job.h
index fddb1dd7b..d105de2b9 100644
--- a/src/libcharon/processing/jobs/initiate_mediation_job.h
+++ b/src/libcharon/processing/jobs/initiate_mediation_job.h
@@ -15,7 +15,7 @@
/**
* @defgroup initiate_mediation_job initiate_mediation_job
- * @{ @ingroup jobs
+ * @{ @ingroup cjobs
*/
#ifndef INITIATE_MEDIATION_JOB_H_
diff --git a/src/libcharon/processing/jobs/job.h b/src/libcharon/processing/jobs/job.h
deleted file mode 100644
index 0f1c16ebe..000000000
--- a/src/libcharon/processing/jobs/job.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright (C) 2005-2006 Martin Willi
- * Copyright (C) 2005 Jan Hutter
- * Hochschule fuer Technik Rapperswil
- *
- * This program 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 2 of the License, or (at your
- * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * This program 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.
- */
-
-/**
- * @defgroup job job
- * @{ @ingroup jobs
- */
-
-#ifndef JOB_H_
-#define JOB_H_
-
-typedef struct job_t job_t;
-
-#include <library.h>
-
-/**
- * Job-Interface as it is stored in the job queue.
- */
-struct job_t {
-
- /**
- * Execute a job.
- *
- * The processing facility executes a job using this method. Jobs are
- * one-shot, they destroy themself after execution, so don't use a job
- * once it has been executed.
- */
- void (*execute) (job_t *this);
-
- /**
- * Destroy a job.
- *
- * Is only called whenever a job was not executed (e.g. due daemon shutdown).
- * After execution, jobs destroy themself.
- */
- void (*destroy) (job_t *job);
-};
-
-#endif /** JOB_H_ @}*/
diff --git a/src/libcharon/processing/jobs/mediation_job.h b/src/libcharon/processing/jobs/mediation_job.h
index 0574c65eb..41485cbc6 100644
--- a/src/libcharon/processing/jobs/mediation_job.h
+++ b/src/libcharon/processing/jobs/mediation_job.h
@@ -15,7 +15,7 @@
/**
* @defgroup mediation_job mediation_job
- * @{ @ingroup jobs
+ * @{ @ingroup cjobs
*/
#ifndef MEDIATION_JOB_H_
diff --git a/src/libcharon/processing/jobs/migrate_job.h b/src/libcharon/processing/jobs/migrate_job.h
index de313d517..09679c734 100644
--- a/src/libcharon/processing/jobs/migrate_job.h
+++ b/src/libcharon/processing/jobs/migrate_job.h
@@ -15,7 +15,7 @@
/**
* @defgroup migrate_job migrate_job
- * @{ @ingroup jobs
+ * @{ @ingroup cjobs
*/
#ifndef MIGRATE_JOB_H_
diff --git a/src/libcharon/processing/jobs/process_message_job.h b/src/libcharon/processing/jobs/process_message_job.h
index 5e3f44d1f..2c42aa577 100644
--- a/src/libcharon/processing/jobs/process_message_job.h
+++ b/src/libcharon/processing/jobs/process_message_job.h
@@ -16,7 +16,7 @@
/**
* @defgroup process_message_job process_message_job
- * @{ @ingroup jobs
+ * @{ @ingroup cjobs
*/
#ifndef PROCESS_MESSAGE_JOB_H_
diff --git a/src/libcharon/processing/jobs/rekey_child_sa_job.h b/src/libcharon/processing/jobs/rekey_child_sa_job.h
index 62887d6b9..fcbe65a06 100644
--- a/src/libcharon/processing/jobs/rekey_child_sa_job.h
+++ b/src/libcharon/processing/jobs/rekey_child_sa_job.h
@@ -15,7 +15,7 @@
/**
* @defgroup rekey_child_sa_job rekey_child_sa_job
- * @{ @ingroup jobs
+ * @{ @ingroup cjobs
*/
#ifndef REKEY_CHILD_SA_JOB_H_
diff --git a/src/libcharon/processing/jobs/rekey_ike_sa_job.h b/src/libcharon/processing/jobs/rekey_ike_sa_job.h
index a5c1028aa..3e3e13d00 100644
--- a/src/libcharon/processing/jobs/rekey_ike_sa_job.h
+++ b/src/libcharon/processing/jobs/rekey_ike_sa_job.h
@@ -15,7 +15,7 @@
/**
* @defgroup rekey_ike_sa_job rekey_ike_sa_job
- * @{ @ingroup jobs
+ * @{ @ingroup cjobs
*/
#ifndef REKEY_IKE_SA_JOB_H_
diff --git a/src/libcharon/processing/jobs/retransmit_job.h b/src/libcharon/processing/jobs/retransmit_job.h
index c8c13479b..c4545534b 100644
--- a/src/libcharon/processing/jobs/retransmit_job.h
+++ b/src/libcharon/processing/jobs/retransmit_job.h
@@ -16,7 +16,7 @@
/**
* @defgroup retransmit_job retransmit_job
- * @{ @ingroup jobs
+ * @{ @ingroup cjobs
*/
#ifndef RETRANSMIT_JOB_H_
diff --git a/src/libcharon/processing/jobs/roam_job.h b/src/libcharon/processing/jobs/roam_job.h
index 55bdf2b28..acfb8bed8 100644
--- a/src/libcharon/processing/jobs/roam_job.h
+++ b/src/libcharon/processing/jobs/roam_job.h
@@ -15,7 +15,7 @@
/**
* @defgroup roam_job roam_job
- * @{ @ingroup jobs
+ * @{ @ingroup cjobs
*/
#ifndef ROAM_JOB_H_
diff --git a/src/libcharon/processing/jobs/send_dpd_job.h b/src/libcharon/processing/jobs/send_dpd_job.h
index 8078a38bc..bd2728b9a 100644
--- a/src/libcharon/processing/jobs/send_dpd_job.h
+++ b/src/libcharon/processing/jobs/send_dpd_job.h
@@ -15,7 +15,7 @@
/**
* @defgroup send_dpd_job send_dpd_job
- * @{ @ingroup jobs
+ * @{ @ingroup cjobs
*/
#ifndef SEND_DPD_JOB_H_
diff --git a/src/libcharon/processing/jobs/send_keepalive_job.h b/src/libcharon/processing/jobs/send_keepalive_job.h
index cda83cd7e..acf6d11aa 100644
--- a/src/libcharon/processing/jobs/send_keepalive_job.h
+++ b/src/libcharon/processing/jobs/send_keepalive_job.h
@@ -15,7 +15,7 @@
/**
* @defgroup send_keepalive_job send_keepalive_job
- * @{ @ingroup jobs
+ * @{ @ingroup cjobs
*/
#ifndef SEND_KEEPALIVE_JOB_H_
diff --git a/src/libcharon/processing/jobs/update_sa_job.h b/src/libcharon/processing/jobs/update_sa_job.h
index 11d1ac9b6..e2344fcc4 100644
--- a/src/libcharon/processing/jobs/update_sa_job.h
+++ b/src/libcharon/processing/jobs/update_sa_job.h
@@ -15,7 +15,7 @@
/**
* @defgroup update_sa_job update_sa_job
- * @{ @ingroup jobs
+ * @{ @ingroup cjobs
*/
#ifndef UPDATE_SA_JOB_H_
diff --git a/src/libcharon/processing/processor.c b/src/libcharon/processing/processor.c
deleted file mode 100644
index d5774af26..000000000
--- a/src/libcharon/processing/processor.c
+++ /dev/null
@@ -1,273 +0,0 @@
-/*
- * Copyright (C) 2005-2007 Martin Willi
- * Copyright (C) 2005 Jan Hutter
- * Hochschule fuer Technik Rapperswil
- *
- * This program 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 2 of the License, or (at your
- * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * This program 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.
- */
-
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-
-#include "processor.h"
-
-#include <daemon.h>
-#include <threading/thread.h>
-#include <threading/condvar.h>
-#include <threading/mutex.h>
-#include <utils/linked_list.h>
-
-
-typedef struct private_processor_t private_processor_t;
-
-/**
- * Private data of processor_t class.
- */
-struct private_processor_t {
- /**
- * Public processor_t interface.
- */
- processor_t public;
-
- /**
- * Number of running threads
- */
- u_int total_threads;
-
- /**
- * Desired number of threads
- */
- u_int desired_threads;
-
- /**
- * Number of threads waiting for work
- */
- u_int idle_threads;
-
- /**
- * All threads managed in the pool (including threads that have been
- * cancelled, this allows to join them during destruction)
- */
- linked_list_t *threads;
-
- /**
- * The jobs are stored in a linked list
- */
- linked_list_t *list;
-
- /**
- * access to linked_list is locked through this mutex
- */
- mutex_t *mutex;
-
- /**
- * Condvar to wait for new jobs
- */
- condvar_t *job_added;
-
- /**
- * Condvar to wait for terminated threads
- */
- condvar_t *thread_terminated;
-};
-
-static void process_jobs(private_processor_t *this);
-
-/**
- * restart a terminated thread
- */
-static void restart(private_processor_t *this)
-{
- thread_t *thread;
-
- DBG2(DBG_JOB, "terminated worker thread, ID: %u", thread_current_id());
-
- /* respawn thread if required */
- this->mutex->lock(this->mutex);
- if (this->desired_threads < this->total_threads ||
- (thread = thread_create((thread_main_t)process_jobs, this)) == NULL)
- {
- this->total_threads--;
- this->thread_terminated->signal(this->thread_terminated);
- }
- else
- {
- this->threads->insert_last(this->threads, thread);
- }
- this->mutex->unlock(this->mutex);
-}
-
-/**
- * Process queued jobs, called by the worker threads
- */
-static void process_jobs(private_processor_t *this)
-{
- /* worker threads are not cancellable by default */
- thread_cancelability(FALSE);
-
- DBG2(DBG_JOB, "started worker thread, ID: %u", thread_current_id());
-
- this->mutex->lock(this->mutex);
- while (this->desired_threads >= this->total_threads)
- {
- job_t *job;
-
- if (this->list->get_count(this->list) == 0)
- {
- this->idle_threads++;
- this->job_added->wait(this->job_added, this->mutex);
- this->idle_threads--;
- continue;
- }
- this->list->remove_first(this->list, (void**)&job);
- this->mutex->unlock(this->mutex);
- /* terminated threads are restarted, so we have a constant pool */
- thread_cleanup_push((thread_cleanup_t)restart, this);
- job->execute(job);
- thread_cleanup_pop(FALSE);
- this->mutex->lock(this->mutex);
- }
- this->mutex->unlock(this->mutex);
- restart(this);
-}
-
-/**
- * Implementation of processor_t.get_total_threads.
- */
-static u_int get_total_threads(private_processor_t *this)
-{
- u_int count;
- this->mutex->lock(this->mutex);
- count = this->total_threads;
- this->mutex->unlock(this->mutex);
- return count;
-}
-
-/**
- * Implementation of processor_t.get_idle_threads.
- */
-static u_int get_idle_threads(private_processor_t *this)
-{
- u_int count;
- this->mutex->lock(this->mutex);
- count = this->idle_threads;
- this->mutex->unlock(this->mutex);
- return count;
-}
-
-/**
- * implements processor_t.get_job_load
- */
-static u_int get_job_load(private_processor_t *this)
-{
- u_int load;
- this->mutex->lock(this->mutex);
- load = this->list->get_count(this->list);
- this->mutex->unlock(this->mutex);
- return load;
-}
-
-/**
- * implements function processor_t.queue_job
- */
-static void queue_job(private_processor_t *this, job_t *job)
-{
- this->mutex->lock(this->mutex);
- this->list->insert_last(this->list, job);
- this->job_added->signal(this->job_added);
- this->mutex->unlock(this->mutex);
-}
-
-/**
- * Implementation of processor_t.set_threads.
- */
-static void set_threads(private_processor_t *this, u_int count)
-{
- this->mutex->lock(this->mutex);
- if (count > this->total_threads)
- { /* increase thread count */
- int i;
- thread_t *current;
-
- this->desired_threads = count;
- DBG1(DBG_JOB, "spawning %d worker threads", count - this->total_threads);
- for (i = this->total_threads; i < count; i++)
- {
- current = thread_create((thread_main_t)process_jobs, this);
- if (current)
- {
- this->threads->insert_last(this->threads, current);
- this->total_threads++;
- }
- }
- }
- else if (count < this->total_threads)
- { /* decrease thread count */
- this->desired_threads = count;
- }
- this->job_added->broadcast(this->job_added);
- this->mutex->unlock(this->mutex);
-}
-
-/**
- * Implementation of processor_t.destroy.
- */
-static void destroy(private_processor_t *this)
-{
- thread_t *current;
- set_threads(this, 0);
- this->mutex->lock(this->mutex);
- while (this->total_threads > 0)
- {
- this->job_added->broadcast(this->job_added);
- this->thread_terminated->wait(this->thread_terminated, this->mutex);
- }
- while (this->threads->remove_first(this->threads,
- (void**)&current) == SUCCESS)
- {
- current->join(current);
- }
- this->mutex->unlock(this->mutex);
- this->thread_terminated->destroy(this->thread_terminated);
- this->job_added->destroy(this->job_added);
- this->mutex->destroy(this->mutex);
- this->list->destroy_offset(this->list, offsetof(job_t, destroy));
- this->threads->destroy(this->threads);
- free(this);
-}
-
-/*
- * Described in header.
- */
-processor_t *processor_create(size_t pool_size)
-{
- private_processor_t *this = malloc_thing(private_processor_t);
-
- this->public.get_total_threads = (u_int(*)(processor_t*))get_total_threads;
- this->public.get_idle_threads = (u_int(*)(processor_t*))get_idle_threads;
- this->public.get_job_load = (u_int(*)(processor_t*))get_job_load;
- this->public.queue_job = (void(*)(processor_t*, job_t*))queue_job;
- this->public.set_threads = (void(*)(processor_t*, u_int))set_threads;
- this->public.destroy = (void(*)(processor_t*))destroy;
-
- this->list = linked_list_create();
- this->threads = linked_list_create();
- this->mutex = mutex_create(MUTEX_TYPE_DEFAULT);
- this->job_added = condvar_create(CONDVAR_TYPE_DEFAULT);
- this->thread_terminated = condvar_create(CONDVAR_TYPE_DEFAULT);
- this->total_threads = 0;
- this->desired_threads = 0;
- this->idle_threads = 0;
-
- return &this->public;
-}
-
diff --git a/src/libcharon/processing/processor.h b/src/libcharon/processing/processor.h
deleted file mode 100644
index 5bf8cf573..000000000
--- a/src/libcharon/processing/processor.h
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * Copyright (C) 2005-2007 Martin Willi
- * Copyright (C) 2005 Jan Hutter
- * Hochschule fuer Technik Rapperswil
- *
- * This program 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 2 of the License, or (at your
- * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * This program 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.
- */
-
-/**
- * @defgroup processor processor
- * @{ @ingroup processing
- */
-
-#ifndef PROCESSOR_H_
-#define PROCESSOR_H_
-
-typedef struct processor_t processor_t;
-
-#include <stdlib.h>
-
-#include <library.h>
-#include <processing/jobs/job.h>
-
-/**
- * The processor uses threads to process queued jobs.
- */
-struct processor_t {
-
- /**
- * Get the total number of threads used by the processor.
- *
- * @return size of thread pool
- */
- u_int (*get_total_threads) (processor_t *this);
-
- /**
- * Get the number of threads currently waiting.
- *
- * @return number of idle threads
- */
- u_int (*get_idle_threads) (processor_t *this);
-
- /**
- * Get the number of queued jobs.
- *
- * @returns number of items in queue
- */
- u_int (*get_job_load) (processor_t *this);
-
- /**
- * Adds a job to the queue.
- *
- * This function is non blocking and adds a job_t to the queue.
- *
- * @param job job to add to the queue
- */
- void (*queue_job) (processor_t *this, job_t *job);
-
- /**
- * Set the number of threads to use in the processor.
- *
- * If the number of threads is smaller than number of currently running
- * threads, thread count is decreased. Use 0 to disable the processor.
- * This call blocks if it decreases thread count until threads have
- * terminated, so make sure there are not too many blocking jobs.
- *
- * @param count number of threads to allocate
- */
- void (*set_threads)(processor_t *this, u_int count);
-
- /**
- * Destroy a processor object.
- */
- void (*destroy) (processor_t *processor);
-};
-
-/**
- * Create the thread pool without any threads.
- *
- * Use the set_threads method to start processing jobs.
- *
- * @return processor_t object
- */
-processor_t *processor_create();
-
-#endif /** PROCESSOR_H_ @}*/
diff --git a/src/libcharon/processing/scheduler.c b/src/libcharon/processing/scheduler.c
deleted file mode 100644
index 345af502a..000000000
--- a/src/libcharon/processing/scheduler.c
+++ /dev/null
@@ -1,358 +0,0 @@
-/*
- * Copyright (C) 2008 Tobias Brunner
- * Copyright (C) 2005-2006 Martin Willi
- * Copyright (C) 2005 Jan Hutter
- * Hochschule fuer Technik Rapperswil
- *
- * This program 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 2 of the License, or (at your
- * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * This program 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.
- */
-
-#include <stdlib.h>
-
-#include "scheduler.h"
-
-#include <daemon.h>
-#include <processing/processor.h>
-#include <processing/jobs/callback_job.h>
-#include <threading/thread.h>
-#include <threading/condvar.h>
-#include <threading/mutex.h>
-
-/* the initial size of the heap */
-#define HEAP_SIZE_DEFAULT 64
-
-typedef struct event_t event_t;
-
-/**
- * Event containing a job and a schedule time
- */
-struct event_t {
- /**
- * Time to fire the event.
- */
- timeval_t time;
-
- /**
- * Every event has its assigned job.
- */
- job_t *job;
-};
-
-/**
- * destroy an event and its job
- */
-static void event_destroy(event_t *event)
-{
- event->job->destroy(event->job);
- free(event);
-}
-
-typedef struct private_scheduler_t private_scheduler_t;
-
-/**
- * Private data of a scheduler_t object.
- */
-struct private_scheduler_t {
-
- /**
- * Public part of a scheduler_t object.
- */
- scheduler_t public;
-
- /**
- * Job which queues scheduled jobs to the processor.
- */
- callback_job_t *job;
-
- /**
- * The heap in which the events are stored.
- */
- event_t **heap;
-
- /**
- * The size of the heap.
- */
- u_int heap_size;
-
- /**
- * The number of scheduled events.
- */
- u_int event_count;
-
- /**
- * Exclusive access to list
- */
- mutex_t *mutex;
-
- /**
- * Condvar to wait for next job.
- */
- condvar_t *condvar;
-};
-
-/**
- * Comparse two timevals, return >0 if a > b, <0 if a < b and =0 if equal
- */
-static int timeval_cmp(timeval_t *a, timeval_t *b)
-{
- if (a->tv_sec > b->tv_sec)
- {
- return 1;
- }
- if (a->tv_sec < b->tv_sec)
- {
- return -1;
- }
- if (a->tv_usec > b->tv_usec)
- {
- return 1;
- }
- if (a->tv_usec < b->tv_usec)
- {
- return -1;
- }
- return 0;
-}
-
-/**
- * Returns the top event without removing it. Returns NULL if the heap is empty.
- */
-static event_t *peek_event(private_scheduler_t *this)
-{
- return this->event_count > 0 ? this->heap[1] : NULL;
-}
-
-/**
- * Removes the top event from the heap and returns it. Returns NULL if the heap
- * is empty.
- */
-static event_t *remove_event(private_scheduler_t *this)
-{
- event_t *event, *top;
- if (!this->event_count)
- {
- return NULL;
- }
-
- /* store the value to return */
- event = this->heap[1];
- /* move the bottom event to the top */
- top = this->heap[1] = this->heap[this->event_count];
-
- if (--this->event_count > 1)
- {
- /* seep down the top event */
- u_int position = 1;
- while ((position << 1) <= this->event_count)
- {
- u_int child = position << 1;
-
- if ((child + 1) <= this->event_count &&
- timeval_cmp(&this->heap[child + 1]->time,
- &this->heap[child]->time) < 0)
- {
- /* the "right" child is smaller */
- child++;
- }
-
- if (timeval_cmp(&top->time, &this->heap[child]->time) <= 0)
- {
- /* the top event fires before the smaller of the two children,
- * stop */
- break;
- }
-
- /* swap with the smaller child */
- this->heap[position] = this->heap[child];
- position = child;
- }
- this->heap[position] = top;
- }
- return event;
-}
-
-/**
- * Get events from the queue and pass it to the processor
- */
-static job_requeue_t schedule(private_scheduler_t * this)
-{
- timeval_t now;
- event_t *event;
- bool timed = FALSE, oldstate;
-
- this->mutex->lock(this->mutex);
-
- time_monotonic(&now);
-
- if ((event = peek_event(this)) != NULL)
- {
- if (timeval_cmp(&now, &event->time) >= 0)
- {
- remove_event(this);
- this->mutex->unlock(this->mutex);
- DBG2(DBG_JOB, "got event, queuing job for execution");
- charon->processor->queue_job(charon->processor, event->job);
- free(event);
- return JOB_REQUEUE_DIRECT;
- }
- timersub(&event->time, &now, &now);
- if (now.tv_sec)
- {
- DBG2(DBG_JOB, "next event in %ds %dms, waiting",
- now.tv_sec, now.tv_usec/1000);
- }
- else
- {
- DBG2(DBG_JOB, "next event in %dms, waiting", now.tv_usec/1000);
- }
- timed = TRUE;
- }
- thread_cleanup_push((thread_cleanup_t)this->mutex->unlock, this->mutex);
- oldstate = thread_cancelability(TRUE);
-
- if (timed)
- {
- this->condvar->timed_wait_abs(this->condvar, this->mutex, event->time);
- }
- else
- {
- DBG2(DBG_JOB, "no events, waiting");
- this->condvar->wait(this->condvar, this->mutex);
- }
- thread_cancelability(oldstate);
- thread_cleanup_pop(TRUE);
- return JOB_REQUEUE_DIRECT;
-}
-
-/**
- * Implements scheduler_t.get_job_load
- */
-static u_int get_job_load(private_scheduler_t *this)
-{
- int count;
- this->mutex->lock(this->mutex);
- count = this->event_count;
- this->mutex->unlock(this->mutex);
- return count;
-}
-
-/**
- * Implements scheduler_t.schedule_job_tv.
- */
-static void schedule_job_tv(private_scheduler_t *this, job_t *job, timeval_t tv)
-{
- event_t *event;
- u_int position;
-
- event = malloc_thing(event_t);
- event->job = job;
- event->time = tv;
-
- this->mutex->lock(this->mutex);
-
- this->event_count++;
- if (this->event_count > this->heap_size)
- {
- /* double the size of the heap */
- this->heap_size <<= 1;
- this->heap = (event_t**)realloc(this->heap,
- (this->heap_size + 1) * sizeof(event_t*));
- }
- /* "put" the event to the bottom */
- position = this->event_count;
-
- /* then bubble it up */
- while (position > 1 && timeval_cmp(&this->heap[position >> 1]->time,
- &event->time) > 0)
- {
- /* parent has to be fired after the new event, move up */
- this->heap[position] = this->heap[position >> 1];
- position >>= 1;
- }
- this->heap[position] = event;
-
- this->condvar->signal(this->condvar);
- this->mutex->unlock(this->mutex);
-}
-
-/**
- * Implements scheduler_t.schedule_job.
- */
-static void schedule_job(private_scheduler_t *this, job_t *job, u_int32_t s)
-{
- timeval_t tv;
-
- time_monotonic(&tv);
- tv.tv_sec += s;
-
- schedule_job_tv(this, job, tv);
-}
-
-/**
- * Implements scheduler_t.schedule_job_ms.
- */
-static void schedule_job_ms(private_scheduler_t *this, job_t *job, u_int32_t ms)
-{
- timeval_t tv, add;
-
- time_monotonic(&tv);
- add.tv_sec = ms / 1000;
- add.tv_usec = (ms % 1000) * 1000;
-
- timeradd(&tv, &add, &tv);
-
- schedule_job_tv(this, job, tv);
-}
-
-/**
- * Implementation of scheduler_t.destroy.
- */
-static void destroy(private_scheduler_t *this)
-{
- event_t *event;
- this->job->cancel(this->job);
- this->condvar->destroy(this->condvar);
- this->mutex->destroy(this->mutex);
- while ((event = remove_event(this)) != NULL)
- {
- event_destroy(event);
- }
- free(this->heap);
- free(this);
-}
-
-/*
- * Described in header.
- */
-scheduler_t * scheduler_create()
-{
- private_scheduler_t *this = malloc_thing(private_scheduler_t);
-
- this->public.get_job_load = (u_int (*) (scheduler_t *this)) get_job_load;
- this->public.schedule_job = (void (*) (scheduler_t *this, job_t *job, u_int32_t s)) schedule_job;
- this->public.schedule_job_ms = (void (*) (scheduler_t *this, job_t *job, u_int32_t ms)) schedule_job_ms;
- this->public.schedule_job_tv = (void (*) (scheduler_t *this, job_t *job, timeval_t tv)) schedule_job_tv;
- this->public.destroy = (void(*)(scheduler_t*)) destroy;
-
- /* Note: the root of the heap is at index 1 */
- this->event_count = 0;
- this->heap_size = HEAP_SIZE_DEFAULT;
- this->heap = (event_t**)calloc(this->heap_size + 1, sizeof(event_t*));
-
- this->mutex = mutex_create(MUTEX_TYPE_DEFAULT);
- this->condvar = condvar_create(CONDVAR_TYPE_DEFAULT);
-
- this->job = callback_job_create((callback_job_cb_t)schedule, this, NULL, NULL);
- charon->processor->queue_job(charon->processor, (job_t*)this->job);
-
- return &this->public;
-}
-
diff --git a/src/libcharon/processing/scheduler.h b/src/libcharon/processing/scheduler.h
deleted file mode 100644
index 5f5d2a563..000000000
--- a/src/libcharon/processing/scheduler.h
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- * Copyright (C) 2009 Tobias Brunner
- * Copyright (C) 2005-2007 Martin Willi
- * Copyright (C) 2005 Jan Hutter
- * Hochschule fuer Technik Rapperswil
- *
- * This program 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 2 of the License, or (at your
- * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * This program 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.
- */
-
-/**
- * @defgroup scheduler scheduler
- * @{ @ingroup processing
- */
-
-#ifndef SCHEDULER_H_
-#define SCHEDULER_H_
-
-typedef struct scheduler_t scheduler_t;
-
-#include <library.h>
-#include <processing/jobs/job.h>
-
-/**
- * The scheduler queues timed events which are then passed to the processor.
- *
- * The scheduler is implemented as a heap. A heap is a special kind of tree-
- * based data structure that satisfies the following property: if B is a child
- * node of A, then key(A) >= (or <=) key(B). So either the element with the
- * greatest (max-heap) or the smallest (min-heap) key is the root of the heap.
- * We use a min-heap whith the key being the absolute unix time at which an
- * event is scheduled. So the root is always the event that will fire next.
- *
- * An earlier implementation of the scheduler used a sorted linked list to store
- * the events. That had the advantage that removing the next event was extremely
- * fast, also, adding an event scheduled before or after all other events was
- * equally fast (all in O(1)). The problem was, though, that adding an event
- * in-between got slower, as the number of events grew larger (O(n)).
- * For each connection there could be several events: IKE-rekey, NAT-keepalive,
- * retransmissions, expire (half-open), and others. So a gateway that probably
- * has to handle thousands of concurrent connnections has to be able to queue a
- * large number of events as fast as possible. Locking makes this even worse, to
- * provide thread-safety, no events can be processed, while an event is queued,
- * so making the insertion fast is even more important.
- *
- * That's the advantage of the heap. Adding an element to the heap can be
- * achieved in O(log n) - on the other hand, removing the root node also
- * requires O(log n) operations. Consider 10000 queued events. Inserting a new
- * event in the list implementation required up to 10000 comparisons. In the
- * heap implementation, the worst case is about 13.3 comparisons. That's a
- * drastic improvement.
- *
- * The implementation itself uses a binary tree mapped to a one-based array to
- * store the elements. This reduces storage overhead and simplifies navigation:
- * the children of the node at position n are at position 2n and 2n+1 (likewise
- * the parent node of the node at position n is at position [n/2]). Thus,
- * navigating up and down the tree is reduced to simple index computations.
- *
- * Adding an element to the heap works as follows: The heap is always filled
- * from left to right, until a row is full, then the next row is filled. Mapped
- * to an array this gets as simple as putting the new element to the first free
- * position. In a one-based array that position equals the number of elements
- * currently stored in the heap. Then the heap property has to be restored, i.e.
- * the new element has to be "bubbled up" the tree until the parent node's key
- * is smaller or the element got the new root of the tree.
- *
- * Removing the next event from the heap works similarly. The event itself is
- * the root node and stored at position 1 of the array. After removing it, the
- * root has to be replaced and the heap property has to be restored. This is
- * done by moving the bottom element (last row, rightmost element) to the root
- * and then "seep it down" by swapping it with child nodes until none of the
- * children has a smaller key or it is again a leaf node.
- */
-struct scheduler_t {
-
- /**
- * Adds a event to the queue, using a relative time offset in s.
- *
- * @param job job to schedule
- * @param time relative time to schedule job, in s
- */
- void (*schedule_job) (scheduler_t *this, job_t *job, u_int32_t s);
-
- /**
- * Adds a event to the queue, using a relative time offset in ms.
- *
- * @param job job to schedule
- * @param time relative time to schedule job, in ms
- */
- void (*schedule_job_ms) (scheduler_t *this, job_t *job, u_int32_t ms);
-
- /**
- * Adds a event to the queue, using an absolut time.
- *
- * The passed timeval should be calculated based on the time_monotonic()
- * function.
- *
- * @param job job to schedule
- * @param time absolut time to schedule job
- */
- void (*schedule_job_tv) (scheduler_t *this, job_t *job, timeval_t tv);
-
- /**
- * Returns number of jobs scheduled.
- *
- * @return number of scheduled jobs
- */
- u_int (*get_job_load) (scheduler_t *this);
-
- /**
- * Destroys a scheduler object.
- */
- void (*destroy) (scheduler_t *this);
-};
-
-/**
- * Create a scheduler.
- *
- * @return scheduler_t object
- */
-scheduler_t *scheduler_create(void);
-
-#endif /** SCHEDULER_H_ @}*/