Changeset 1871118 in mainline for kernel/generic/src/synch/waitq.c

Timestamp:

2023-02-10T22:59:11Z (2 years ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Branches:

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

Children:

11d2c983

Parents:

daadfa6

git-author:

Jiří Zárevúcky <zarevucky.jiri@…> (2023-02-10 22:53:12)

git-committer:

Jiří Zárevúcky <zarevucky.jiri@…> (2023-02-10 22:59:11)

Message:

Make thread_t reference counted

This simplifies interaction between various locks and thread
lifespan, which simplifies things. For example, threads_lock can
now simply be a mutex protecting the global it was made for, and
nothing more.

File:

• kernel/generic/src/synch/waitq.c (modified) (1 diff)

kernel/generic/src/synch/waitq.c

@@ -513 +513 @@
 loop:
         if (list_empty(&wq->sleepers)) {
-                if (mode != WAKEUP_ALL) {
+                if (mode == WAKEUP_CLOSE) {
+                        // FIXME: this can technically fail if we get two billion sleeps after the wakeup call.
+                        wq->missed_wakeups = INT_MAX;
+                } else if (mode != WAKEUP_ALL) {
                         wq->missed_wakeups++;
                 }