Cleanup: simplify 'poll' wrapper build
[lttng-tools.git] / src / common / fd-tracker / utils-poll.c
index fa957432d01945e397f49c7d0836ba4338182b59..17349a45ff252972d2607260ffb7bb08248a0be8 100644 (file)
@@ -9,6 +9,66 @@
 
 #include "utils.h"
 
+#if HAVE_EPOLL
+
+struct create_args {
+       struct lttng_poll_event *events;
+       int size;
+       int flags;
+};
+
+static int open_epoll(void *data, int *out_fd)
+{
+       int ret;
+       struct create_args *args = data;
+
+       ret = lttng_poll_create(args->events, args->size, args->flags);
+       if (ret < 0) {
+               goto end;
+       }
+
+       *out_fd = args->events->epfd;
+end:
+       return ret;
+}
+
+static int close_epoll(void *data, int *in_fd)
+{
+       /* Will close the epfd. */
+       lttng_poll_clean((struct lttng_poll_event *) data);
+       return 0;
+}
+
+/*
+ * The epoll variant of the poll compat layer creates an unsuspendable fd which
+ * must be tracked.
+ */
+int fd_tracker_util_poll_create(struct fd_tracker *tracker,
+               const char *name,
+               struct lttng_poll_event *events,
+               int size,
+               int flags)
+{
+       int out_fd;
+       struct create_args create_args = {
+               .events = events,
+               .size = size,
+               .flags = flags,
+       };
+
+       return fd_tracker_open_unsuspendable_fd(
+                       tracker, &out_fd, &name, 1, open_epoll, &create_args);
+}
+
+int fd_tracker_util_poll_clean(
+               struct fd_tracker *tracker, struct lttng_poll_event *events)
+{
+       return fd_tracker_close_unsuspendable_fd(
+                       tracker, &events->epfd, 1, close_epoll, events);
+}
+
+#else /* HAVE_EPOLL */
+
 /*
  * The epoll variant of the poll compat layer creates an unsuspendable fd which
  * must be tracked.
@@ -28,3 +88,5 @@ int fd_tracker_util_poll_clean(
        lttng_poll_clean(events);
        return 0;
 }
+
+#endif /* !HAVE_EPOLL */
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