Changeset c7509e5 in mainline for uspace/lib/libc/generic/async.c

Timestamp:

2007-07-06T17:43:26Z (18 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

398d967

Parents:

b76f2f8

Message:

Add comment clarifying how a fibril waiting for a message gets rescheduled.

File:

• uspace/lib/libc/generic/async.c (modified) (1 diff)

uspace/lib/libc/generic/async.c

@@ -357 +357 @@
 
                 conn->wdata.active = 0;
+                /*
+                 * Note: the current fibril will be rescheduled either due to a
+                 * timeout or due to an arriving message destined to it. In the
+                 * former case, handle_expired_timeouts() and, in the latter
+                 * case, route_call() will perform the wakeup.
+                 */
                 fibril_schedule_next_adv(FIBRIL_TO_MANAGER);
                 /*
                  * Futex is up after getting back from async_manager get it
                  * again.
-                */
+                 */
                 futex_down(&async_futex);
                 if (usecs && conn->wdata.timedout &&