X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Fcompat%2Fpoll.h;h=4b2fc5036843c5863047125a8c1d79085405b34f;hb=5a12931eca4ae292cc659222d5da12b9b7480808;hp=77c46a1d08d60ac8bca806628f368fc46fc915c2;hpb=a97dd6ce0d6f658c50b7cca73724fd8e1d5a36a1;p=lttng-tools.git

diff --git a/src/common/compat/poll.h b/src/common/compat/poll.h
index 77c46a1d0..4b2fc5036 100644
--- a/src/common/compat/poll.h
+++ b/src/common/compat/poll.h
@@ -119,9 +119,7 @@ static inline int __lttng_epoll_get_prev_fd(struct lttng_poll_event *events,
 #define LTTNG_POLL_GET_PREV_FD(e, i, nb_fd) \
 	__lttng_epoll_get_prev_fd(LTTNG_REF(e), i, nb_fd)
 
-/*
- * Create the epoll set. No memory allocation is done here.
- */
+/* Create the epoll set. */
 extern int compat_epoll_create(struct lttng_poll_event *events,
 		int size, int flags);
 #define lttng_poll_create(events, size, flags) \
@@ -171,6 +169,14 @@ extern int compat_epoll_del(struct lttng_poll_event *events, int fd);
 #define lttng_poll_del(events, fd) \
 	compat_epoll_del(events, fd)
 
+/*
+ * Modify an fd's events in the epoll set.
+ */
+extern int compat_epoll_mod(struct lttng_poll_event *events,
+		int fd, uint32_t req_events);
+#define lttng_poll_mod(events, fd, req_events) \
+	compat_epoll_mod(events, fd, req_events)
+
 /*
  * Set up the poll set limits variable poll_max_size
  */
@@ -307,10 +313,12 @@ static inline int __lttng_poll_get_prev_fd(struct lttng_poll_event *events,
 /*
  * For the following calls, consider 'e' to be a lttng_poll_event pointer and i
  * being the index of the events array.
+ * LTTNG_POLL_GETNB is always used after lttng_poll_wait, thus we can use the
+ * current list for test compatibility purposes.
  */
 #define LTTNG_POLL_GETFD(e, i) LTTNG_REF(e)->wait.events[i].fd
 #define LTTNG_POLL_GETEV(e, i) LTTNG_REF(e)->wait.events[i].revents
-#define LTTNG_POLL_GETNB(e) LTTNG_REF(e)->wait.nb_fd
+#define LTTNG_POLL_GETNB(e) LTTNG_REF(e)->current.nb_fd
 #define LTTNG_POLL_GETSZ(e) LTTNG_REF(e)->wait.events_size
 #define LTTNG_POLL_GET_PREV_FD(e, i, nb_fd) \
 	__lttng_poll_get_prev_fd(LTTNG_REF(e), i, nb_fd)
@@ -347,6 +355,14 @@ extern int compat_poll_del(struct lttng_poll_event *events, int fd);
 #define lttng_poll_del(events, fd) \
 	compat_poll_del(events, fd)
 
+/*
+ * Modify an fd's events in the poll set.
+ */
+extern int compat_poll_mod(struct lttng_poll_event *events,
+		int fd, uint32_t req_events);
+#define lttng_poll_mod(events, fd, req_events) \
+	compat_poll_mod(events, fd, req_events)
+
 /*
  * Set up the poll set limits variable poll_max_size
  */