X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=sched.h;h=9c5c098e0fbe38dbe7d5f2b77e33994ffa4ed1bc;hp=1da5a220aa8b5f52c2b31685a985cf58997a5e4a;hb=a28eef552dc779eac12c1df430522dc4e20ae428;hpb=5bf80b0268b0afb3984aea74d41eddef34d50d03

diff --git a/sched.h b/sched.h
index 1da5a220..9c5c098e 100644
--- a/sched.h
+++ b/sched.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2010 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2006-2013 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -29,6 +29,10 @@ struct sched {
 	int max_fileno;
 	/** If non-NULL, use this function instead of para_select. */
 	int (*select_function)(int, fd_set *, fd_set *, struct timeval *);
+	/** Currently active pre_select functions. */
+	struct list_head pre_select_list;
+	/** Currently active post_select functions. */
+	struct list_head post_select_list;
 };
 
 /**
@@ -51,11 +55,13 @@ struct task {
 	 */
 	void (*pre_select)(struct sched *s, struct task *t);
 	/**
-	 * The postselect hook of \a t.
+	 * The post select hook of \a t.
 	 *
-	 * Evaluate and act upon the results of the previous select call.
+	 * Its purpose is to evaluate and act upon the results of the previous
+	 * select call. If this function returns a negative value, the
+	 * scheduler unregisters the task.
 	 */
-	void (*post_select)(struct sched *s, struct task *t);
+	int (*post_select)(struct sched *s, struct task *t);
 	/** Whether this task is in error state. */
 	int error;
 	/** Position of the task in the pre_select list of the scheduler. */
@@ -64,23 +70,26 @@ struct task {
 	struct list_head post_select_node;
 	/** Descriptive text and current status of the task. */
 	char status[255];
+	/** If less than zero, the task was notified by another task. */
+	int notification;
 };
 
 /**
  * This is set by the scheduler at the beginning of its main loop.  It may be
  * used (read-only) from everywhere. As none of the functions called by the
  * scheduler are allowed to block, this value should be accurate enough so that
- * there is no need to call gettimeofday() directly.
+ * there is no need to call clock_gettime() directly.
  */
 extern struct timeval *now;
 
-void register_task(struct task *t);
+void register_task(struct sched *s, struct task *t);
 int schedule(struct sched *s);
-char *get_task_list(void);
-int kill_task(char *id);
-void sched_shutdown(void);
+char *get_task_list(struct sched *s);
+void task_notify(struct task *t, int err);
+void task_notify_all(struct sched *s, int err);
+int task_get_notification(struct task *t);
 void sched_min_delay(struct sched *s);
 void sched_request_timeout(struct timeval *to, struct sched *s);
 void sched_request_timeout_ms(long unsigned ms, struct sched *s);
-void sched_request_barrier(struct timeval *barrier, struct sched *s);
-void sched_request_barrier_or_min_delay(struct timeval *barrier, struct sched *s);
+int sched_request_barrier(struct timeval *barrier, struct sched *s);
+int sched_request_barrier_or_min_delay(struct timeval *barrier, struct sched *s);