Changeset 88cbc66 in mainline for uspace/lib/c/generic/thread/fibril.c

Timestamp:

2025-03-08T16:41:12Z (29 hours ago)

Author:

GitHub <noreply@…>

Parents:

797ab95 (diff), af28af6 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

git-author:

Matěj Volf <mat.volfik@…> (2025-03-08 16:41:12)

git-committer:

GitHub <noreply@…> (2025-03-08 16:41:12)

Message:

Merge af28af66b2f75b653b814d95c7e3b93389a559e6 into 797ab957fc37b27462c54f0c3a7520af8a33e233

File:

• uspace/lib/c/generic/thread/fibril.c (modified) (4 diffs)

uspace/lib/c/generic/thread/fibril.c

@@ -185 +185 @@
 void fibril_setup(fibril_t *f)
 {
+        list_initialize(&f->exit_hooks);
         futex_lock(&fibril_futex);
         list_append(&f->all_link, &fibril_list);
@@ -845 +846 @@
 }
 
+void fibril_run_exit_hooks(fibril_t *f)
+{
+        list_foreach_safe(f->exit_hooks, cur, _next) {
+                fibril_hook_t *hook = list_get_instance(cur, fibril_hook_t, link);
+                list_remove(cur);
+                hook->func();
+                free(hook);
+        }
+}
+
 /**
  * Exit a fibril. Never returns.
@@ -854 +865 @@
         // TODO: implement fibril_join() and remember retval
         (void) retval;
+
+        fibril_run_exit_hooks(fibril_self());
 
         fibril_t *f = _ready_list_pop_nonblocking(false);
@@ -918 +931 @@
 }
 
+errno_t fibril_add_exit_hook(void (*hook)(void))
+{
+        fibril_hook_t *h = malloc(sizeof(fibril_hook_t));
+        if (!h)
+                return ENOMEM;
+
+        DPRINTF("adding exit hook: function %p (fibril_hook_t structure at %p)\n", hook, h);
+
+        h->func = hook;
+        list_append(&h->link, &fibril_self()->exit_hooks);
+        return EOK;
+}
+
 errno_t fibril_ipc_wait(ipc_call_t *call, const struct timespec *expires)
 {