55 lines
2.5 KiB
Diff
55 lines
2.5 KiB
Diff
Upstream fix for a memory leak introduced in Fibers 1.1.0 that would manifest
|
|
in shepherd:
|
|
|
|
https://github.com/wingo/fibers/issues/65
|
|
https://issues.guix.gnu.org/58631
|
|
|
|
diff --git a/fibers/scheduler.scm b/fibers/scheduler.scm
|
|
index 2b03941..760b037 100644
|
|
--- a/fibers/scheduler.scm
|
|
+++ b/fibers/scheduler.scm
|
|
@@ -182,8 +182,10 @@ remote kernel thread."
|
|
(#f (warn "scheduler for unknown fd" fd))
|
|
((and events+waiters (active-events . waiters))
|
|
;; First, clear the active status, as the EPOLLONESHOT has
|
|
- ;; deactivated our entry in the epoll set.
|
|
- (set-car! events+waiters #f)
|
|
+ ;; deactivated our entry in the epoll set. Set the car to 0, not #f, so
|
|
+ ;; that 'schedule-tasks-for-active-fd' doesn't end up re-adding a
|
|
+ ;; finalizer on FD.
|
|
+ (set-car! events+waiters 0)
|
|
(set-cdr! events+waiters '())
|
|
(unless (zero? (logand revents (logior EPOLLHUP EPOLLERR)))
|
|
(hashv-remove! (scheduler-fd-waiters sched) fd))
|
|
@@ -336,21 +338,19 @@ expressed as an epoll bitfield."
|
|
|
|
(let ((fd-waiters (hashv-ref (scheduler-fd-waiters sched) fd)))
|
|
(match fd-waiters
|
|
- ((active-events . waiters)
|
|
- (set-cdr! fd-waiters (acons events task waiters))
|
|
- (unless (and active-events
|
|
- (= (logand events active-events) events))
|
|
- (let ((active-events (logior events (or active-events 0))))
|
|
- (set-car! fd-waiters active-events)
|
|
- (add-fdes-finalizer! fd (fd-finalizer fd-waiters))
|
|
- (epoll-add*! (scheduler-epfd sched) fd
|
|
- (logior active-events EPOLLONESHOT)))))
|
|
- (#f
|
|
+ ((or #f (#f)) ;FD is new or was finalized
|
|
(let ((fd-waiters (list events (cons events task))))
|
|
(hashv-set! (scheduler-fd-waiters sched) fd fd-waiters)
|
|
(add-fdes-finalizer! fd (fd-finalizer fd-waiters))
|
|
(epoll-add*! (scheduler-epfd sched) fd
|
|
- (logior events EPOLLONESHOT)))))))
|
|
+ (logior events EPOLLONESHOT))))
|
|
+ ((active-events . waiters)
|
|
+ (set-cdr! fd-waiters (acons events task waiters))
|
|
+ (unless (= (logand events active-events) events)
|
|
+ (let ((active-events (logior events active-events)))
|
|
+ (set-car! fd-waiters active-events)
|
|
+ (epoll-add*! (scheduler-epfd sched) fd
|
|
+ (logior active-events EPOLLONESHOT))))))))
|
|
|
|
(define (schedule-task-when-fd-readable sched fd task)
|
|
"Arrange to schedule @var{task} on @var{sched} when the file
|