selfwake: do share pipe descriptors with workers

This only affects users of the undocumented --worker-processes
switch.  Furthermore, this only affects non-Linux platforms which
rely on the pipe implementation of selfwake.

This prevents us from wasting one extraneous file descriptor slot
(and hence potentially wasting 128 bytes in userland).

1 files changed, 2 insertions, 0 deletions

diff --git a/selfwake.h b/selfwake.h
index 37bf0f6..15c0ac0 100644
--- a/selfwake.h
+++ b/selfwake.h
@@ -23,6 +23,7 @@ struct mog_selfpipe {
 struct mog_fd * mog_selfwake_new(void);
 void mog_selfwake_trigger(struct mog_fd *);
 void mog_selfwake_drain(struct mog_fd *);
+#define mog_selfwake_put(mfd) mog_fd_put((mfd))
 static inline void mog_selfwake_interrupt(void) {}
 void mog_selfwake_wait(struct mog_fd *);
 #else /* use Linux-only facilities like epoll_pwait or ppoll */
@@ -33,6 +34,7 @@ static inline void mog_selfwake_wait(struct mog_fd *mfd)
 static inline struct mog_fd * mog_selfwake_new(void) { return NULL; }
 static inline void mog_selfwake_trigger(struct mog_fd *mfd) {}
 static inline void mog_selfwake_drain(struct mog_fd *mfd) {}
+static inline void mog_selfwake_put(struct mog_fd *mfd) {}
 static inline void mog_selfwake_interrupt(void)
 {
         CHECK(int, 0, kill(getpid(), SIGURG));