summaryrefslogtreecommitdiff
path: root/src/charon/processing/job_queue.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/charon/processing/job_queue.h')
-rw-r--r--src/charon/processing/job_queue.h100
1 files changed, 100 insertions, 0 deletions
diff --git a/src/charon/processing/job_queue.h b/src/charon/processing/job_queue.h
new file mode 100644
index 000000000..9b58588ae
--- /dev/null
+++ b/src/charon/processing/job_queue.h
@@ -0,0 +1,100 @@
+/**
+ * @file job_queue.h
+ *
+ * @brief Interface of job_queue_t.
+ *
+ */
+
+/*
+ * 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.
+ */
+
+#ifndef JOB_QUEUE_H_
+#define JOB_QUEUE_H_
+
+typedef struct job_queue_t job_queue_t;
+
+#include <library.h>
+#include <processing/jobs/job.h>
+
+/**
+ * @brief The job queue stores jobs, which will be processed by the thread_pool_t.
+ *
+ * Jobs are added from various sources, from the threads and
+ * from the event_queue_t.
+ * Although the job-queue is based on a linked_list_t
+ * all access functions are thread-save implemented.
+ *
+ * @b Constructors:
+ * - job_queue_create()
+ *
+ * @ingroup processing
+ */
+struct job_queue_t {
+
+ /**
+ * @brief Returns number of jobs in queue.
+ *
+ * @param job_queue_t calling object
+ * @returns number of items in queue
+ */
+ int (*get_count) (job_queue_t *job_queue);
+
+ /**
+ * @brief Get the next job from the queue.
+ *
+ * If the queue is empty, this function blocks until a job can be returned.
+ * After using, the returned job has to get destroyed by the caller.
+ *
+ * @param job_queue_t calling object
+ * @param[out] job pointer to a job pointer where to job is returned to
+ * @return next job
+ */
+ job_t *(*get) (job_queue_t *job_queue);
+
+ /**
+ * @brief Adds a job to the queue.
+ *
+ * This function is non blocking and adds a job_t to the list.
+ * The specific job object has to get destroyed by the thread which
+ * removes the job.
+ *
+ * @param job_queue_t calling object
+ * @param job job to add to the queue (job is not copied)
+ */
+ void (*add) (job_queue_t *job_queue, job_t *job);
+
+ /**
+ * @brief Destroys a job_queue object.
+ *
+ * @warning The caller of this function has to make sure
+ * that no thread is going to add or get a job from the job_queue
+ * after calling this function.
+ *
+ * @param job_queue_t calling object
+ */
+ void (*destroy) (job_queue_t *job_queue);
+};
+
+/**
+ * @brief Creates an empty job_queue.
+ *
+ * @return job_queue_t object
+ *
+ * @ingroup processing
+ */
+job_queue_t *job_queue_create(void);
+
+#endif /*JOB_QUEUE_H_*/