Introduce priority classes for jobs

src/libstrongswan/processing/jobs/callback_job.c

@@ -227,6 +227,12 @@ METHOD(job_t, execute, void,
 	thread_cleanup_pop(cleanup);
 }
 
+METHOD(job_t, get_priority, job_priority_t,
+	private_callback_job_t *this)
+{
+	return JOB_PRIO_MEDIUM;
+}
+
 /*
  * Described in header.
  */
@@ -240,6 +246,7 @@ callback_job_t *callback_job_create(callback_job_cb_t cb, void *data,
 		.public = {
 			.job = {
 				.execute = _execute,
+				.get_priority = _get_priority,
 				.destroy = _destroy,
 			},
 			.cancel = _cancel,

src/libstrongswan/processing/jobs/job.h

@@ -23,11 +23,25 @@
 #define JOB_H_
 
 typedef struct job_t job_t;
+typedef enum job_priority_t job_priority_t;
 
 #include <library.h>
 
 /**
- * Job-Interface as it is stored in the job queue.
+ * Priority classes of jobs
+ */
+enum job_priority_t {
+	/** Short jobs executed with highest priority */
+	JOB_PRIO_HIGH = 0,
+	/** Default job priority */
+	JOB_PRIO_MEDIUM,
+	/** Low priority jobs with thread blocking operations */
+	JOB_PRIO_LOW,
+	JOB_PRIO_MAX
+};
+
+/**
+ * Job interface as it is stored in the job queue.
  */
 struct job_t {
 
@@ -40,13 +54,20 @@ struct job_t {
 	 */
 	void (*execute) (job_t *this);
 
+	/**
+	 * Get the priority of a job.
+	 *
+	 * @return			job priority
+	 */
+	job_priority_t (*get_priority)(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);
+	void (*destroy) (job_t *this);
 };
 
 #endif /** JOB_H_ @}*/