From 58b796608f3aca60f0abb21e2f96aa55ecb18ab3 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Sun, 9 Jul 2017 22:33:09 +0000
Subject: [PATCH] Some extra logging to show why tmux might exit.

---
 cmd-kill-session.c | 4 ++--
 server-fn.c        | 4 ++--
 server.c           | 3 ++-
 session.c          | 8 ++++----
 tmux.h             | 2 +-
 5 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/cmd-kill-session.c b/cmd-kill-session.c
index 87ab8a0a..00ea7789 100644
--- a/cmd-kill-session.c
+++ b/cmd-kill-session.c
@@ -61,12 +61,12 @@ cmd_kill_session_exec(struct cmd *self, struct cmdq_item *item)
 		RB_FOREACH_SAFE(sloop, sessions, &sessions, stmp) {
 			if (sloop != s) {
 				server_destroy_session(sloop);
-				session_destroy(sloop);
+				session_destroy(sloop, __func__);
 			}
 		}
 	} else {
 		server_destroy_session(s);
-		session_destroy(s);
+		session_destroy(s, __func__);
 	}
 	return (CMD_RETURN_NORMAL);
 }
diff --git a/server-fn.c b/server-fn.c
index b1e52aa8..ccec1b4a 100644
--- a/server-fn.c
+++ b/server-fn.c
@@ -333,7 +333,7 @@ server_destroy_session_group(struct session *s)
 	else {
 		TAILQ_FOREACH_SAFE(s, &sg->sessions, gentry, s1) {
 			server_destroy_session(s);
-			session_destroy(s);
+			session_destroy(s, __func__);
 		}
 	}
 }
@@ -399,7 +399,7 @@ server_check_unattached(void)
 		if (!(s->flags & SESSION_UNATTACHED))
 			continue;
 		if (options_get_number (s->options, "destroy-unattached"))
-			session_destroy(s);
+			session_destroy(s, __func__);
 	}
 }
 
diff --git a/server.c b/server.c
index 294d2848..323ea37e 100644
--- a/server.c
+++ b/server.c
@@ -249,7 +249,7 @@ server_send_exit(void)
 	}
 
 	RB_FOREACH_SAFE(s, sessions, &sessions, s1)
-		session_destroy(s);
+		session_destroy(s, __func__);
 }
 
 /* Update socket execute permissions based on whether sessions are attached. */
@@ -347,6 +347,7 @@ server_signal(int sig)
 {
 	int	fd;
 
+	log_debug("%s: %s", __func__, strsignal(sig));
 	switch (sig) {
 	case SIGTERM:
 		server_exit = 1;
diff --git a/session.c b/session.c
index 9fa76dc3..a675ae3d 100644
--- a/session.c
+++ b/session.c
@@ -178,7 +178,7 @@ session_create(const char *prefix, const char *name, int argc, char **argv,
 	if (argc >= 0) {
 		wl = session_new(s, NULL, argc, argv, path, cwd, idx, cause);
 		if (wl == NULL) {
-			session_destroy(s);
+			session_destroy(s, __func__);
 			return (NULL);
 		}
 		session_select(s, RB_ROOT(&s->windows)->idx);
@@ -229,11 +229,11 @@ session_free(__unused int fd, __unused short events, void *arg)
 
 /* Destroy a session. */
 void
-session_destroy(struct session *s)
+session_destroy(struct session *s, const char *from)
 {
 	struct winlink	*wl;
 
-	log_debug("session %s destroyed", s->name);
+	log_debug("session %s destroyed (%s)", s->name, from);
 	s->curw = NULL;
 
 	RB_REMOVE(sessions, &sessions, s);
@@ -419,7 +419,7 @@ session_detach(struct session *s, struct winlink *wl)
 	session_group_synchronize_from(s);
 
 	if (RB_EMPTY(&s->windows)) {
-		session_destroy(s);
+		session_destroy(s, __func__);
 		return (1);
 	}
 	return (0);
diff --git a/tmux.h b/tmux.h
index 1b515f58..ce666230 100644
--- a/tmux.h
+++ b/tmux.h
@@ -2295,7 +2295,7 @@ struct session	*session_find_by_id(u_int);
 struct session	*session_create(const char *, const char *, int, char **,
 		     const char *, const char *, struct environ *,
 		     struct termios *, int, u_int, u_int, char **);
-void		 session_destroy(struct session *);
+void		 session_destroy(struct session *, const char *);
 void		 session_add_ref(struct session *, const char *);
 void		 session_remove_ref(struct session *, const char *);
 int		 session_check_name(const char *);