From 9118ead5ae15548c8a5b96340f9a0a24b3104e32 Mon Sep 17 00:00:00 2001
From: Jesse Luehrs <doy@tozt.net>
Date: Tue, 10 May 2016 16:03:37 -0400
Subject: make terms handle cleaning themselves up

---
 src/pty-unix.c    |  5 +++++
 src/runes.c       |  8 +++++---
 src/term.c        | 20 ++++++++++++++------
 src/term.h        |  4 ++++
 src/window-xlib.c |  5 +++++
 5 files changed, 33 insertions(+), 9 deletions(-)

diff --git a/src/pty-unix.c b/src/pty-unix.c
index 7975964..27419ce 100644
--- a/src/pty-unix.c
+++ b/src/pty-unix.c
@@ -94,6 +94,8 @@ void runes_pty_backend_spawn_subprocess(RunesTerm *t)
         fprintf(old_stderr, "Couldn't run %s: %s\n", cmd, strerror(errno));
         exit(1);
     }
+
+    runes_term_refcnt_inc(t);
 }
 
 void runes_pty_backend_init_loop(RunesTerm *t, RunesLoop *loop)
@@ -155,7 +157,10 @@ static int runes_pty_backend_got_data(void *t)
         return 1;
     }
     else {
+        runes_pty_backend_cleanup(pty);
+        free(pty);
         runes_window_backend_request_close(t);
+        runes_term_refcnt_dec(t);
 
         return 0;
     }
diff --git a/src/runes.c b/src/runes.c
index 1078ee9..af32778 100644
--- a/src/runes.c
+++ b/src/runes.c
@@ -1,4 +1,5 @@
 #include <locale.h>
+#include <stdlib.h>
 
 #include "runes.h"
 
@@ -8,17 +9,18 @@
 int main (int argc, char *argv[])
 {
     RunesLoop loop;
-    RunesTerm t;
+    RunesTerm *t;
 
     setlocale(LC_ALL, "");
 
     runes_loop_init(&loop);
-    runes_term_init(&t, &loop, argc, argv);
+
+    t = calloc(1, sizeof(RunesTerm));
+    runes_term_init(t, &loop, argc, argv);
 
     runes_loop_run(&loop);
 
 #ifdef RUNES_VALGRIND
-    runes_term_cleanup(&t);
     runes_loop_cleanup(&loop);
 #endif
 
diff --git a/src/term.c b/src/term.c
index 0584653..fe79cc5 100644
--- a/src/term.c
+++ b/src/term.c
@@ -42,6 +42,20 @@ void runes_term_init(RunesTerm *t, RunesLoop *loop, int argc, char *argv[])
     runes_term_init_loop(t, loop);
 }
 
+void runes_term_refcnt_inc(RunesTerm *t)
+{
+    t->refcnt++;
+}
+
+void runes_term_refcnt_dec(RunesTerm *t)
+{
+    t->refcnt--;
+    if (t->refcnt <= 0) {
+        runes_term_cleanup(t);
+        free(t);
+    }
+}
+
 void runes_term_set_window_size(RunesTerm *t, int xpixel, int ypixel)
 {
     int row = ypixel / t->display->fonty, col = xpixel / t->display->fontx;
@@ -55,12 +69,6 @@ void runes_term_cleanup(RunesTerm *t)
     vt100_screen_cleanup(t->scr);
     free(t->scr);
 
-    runes_pty_backend_cleanup(t->pty);
-    free(t->pty);
-
-    runes_window_backend_cleanup(t->w);
-    free(t->w);
-
     runes_display_cleanup(t->display);
     free(t->display);
 
diff --git a/src/term.h b/src/term.h
index 7da9ac1..51fc327 100644
--- a/src/term.h
+++ b/src/term.h
@@ -11,10 +11,14 @@ struct runes_term {
     RunesPtyBackend *pty;
     VT100Screen *scr;
     RunesLoop *loop;
+
+    int refcnt;
 };
 
 void runes_term_init(RunesTerm *t, RunesLoop *loop, int argc, char *argv[]);
 void runes_term_set_window_size(RunesTerm *t, int xpixel, int ypixel);
+void runes_term_refcnt_inc(RunesTerm *t);
+void runes_term_refcnt_dec(RunesTerm *t);
 void runes_term_cleanup(RunesTerm *t);
 
 #endif
diff --git a/src/window-xlib.c b/src/window-xlib.c
index c41bedf..ecfc6cb 100644
--- a/src/window-xlib.c
+++ b/src/window-xlib.c
@@ -237,6 +237,8 @@ void runes_window_backend_create_window(RunesTerm *t, int argc, char *argv[])
 
     XMapWindow(w->dpy, w->w);
     XMapWindow(w->dpy, w->border_w);
+
+    runes_term_refcnt_inc(t);
 }
 
 void runes_window_backend_init_loop(RunesTerm *t, RunesLoop *loop)
@@ -437,7 +439,10 @@ static int runes_window_backend_process_event(void *t)
     }
 
     if (should_close) {
+        runes_window_backend_cleanup(w);
+        free(w);
         runes_pty_backend_request_close(t);
+        runes_term_refcnt_dec(t);
     }
 
     return !should_close;
-- 
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