Changeset a1026da in mainline for uspace/lib/c/generic/async.c

Timestamp:

2017-12-22T22:43:25Z (6 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

1569a9b

Parents:

f04b5b3

git-author:

Jakub Jermar <jakub@…> (2017-12-22 21:47:09)

git-committer:

Jakub Jermar <jakub@…> (2017-12-22 22:43:25)

Message:

Introduce IPC_CALL_AUTO_REPLY call flag

Calls that never make it to userspace due to error are answered by the
kernel and decorated with the newly introduced IPC_CALL_AUTO_REPLY. This
gives the sender a way to reliably figure out that the recipient is
still waiting for the call.

File:

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

uspace/lib/c/generic/async.c

@@ -1496 +1496 @@
 
                 if (call.cap_handle == CAP_NIL) {
-                        if (call.flags == 0) {
-                                /* This neither a notification nor an answer. */
+                        if ((call.flags &
+                            (IPC_CALL_NOTIF | IPC_CALL_ANSWERED)) == 0) {
+                                /* Neither a notification nor an answer. */
                                 handle_expired_timeouts();
                                 continue;