Fixes deadlocks on OCaml5 when trying to get the lock that is already
held:
Fatal error during lock: Resource deadlock avoided
---
ocaml/guestfs-c.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/ocaml/guestfs-c.c b/ocaml/guestfs-c.c
index 3888c9456..bcf8e6ab3 100644
--- a/ocaml/guestfs-c.c
+++ b/ocaml/guestfs-c.c
@@ -395,12 +395,16 @@ event_callback_wrapper (guestfs_h *g,
/* Ensure we are holding the GC lock before any GC operations are
* possible. (RHBZ#725824)
*/
- caml_leave_blocking_section ();
+ bool in_blocking_section = (caml_state == NULL);
+
+ if (in_blocking_section)
+ caml_leave_blocking_section ();
event_callback_wrapper_locked (g, data, event, event_handle, flags,
buf, buf_len, array, array_len);
- caml_enter_blocking_section ();
+ if (in_blocking_section)
+ caml_enter_blocking_section ();
}
value
--
2.40.1
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