ncurses 6.3 - patch 20220724

[ncurses.git] / test / worm.c

diff --git a/test/worm.c b/test/worm.c
index d618e3bb050fee51440a5c2a492e988024fa3ece..4888a519c8a256ac2b3a5040a5857d9e5b59d0bc 100644 (file)
--- a/test/worm.c
+++ b/test/worm.c
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 1998-2018,2019 Free Software Foundation, Inc.              *
+ * Copyright 2018-2020,2022 Thomas E. Dickey                                *
+ * Copyright 1998-2016,2017 Free Software Foundation, Inc.                  *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -52,7 +53,7 @@
   traces will be dumped.  The program stops and waits for one character of
   input at the beginning and end of the interval.
 
-  $Id: worm.c,v 1.80 2019/12/07 19:04:09 tom Exp $
+  $Id: worm.c,v 1.84 2022/07/23 17:06:16 tom Exp $
 */
 
 #include <test.priv.h>
@@ -106,6 +107,18 @@ static int length = 16, number = 3;
 static chtype trail = ' ';
 
 static unsigned pending;
+
+#ifdef USE_PTHREADS
+#define Locked(statement) { \
+       pthread_mutex_lock(&pending_mutex); \
+       statement; \
+       pthread_mutex_unlock(&pending_mutex); \
+    }
+pthread_mutex_t pending_mutex;
+#else
+#define Locked(statement) statement
+#endif
+
 #ifdef TRACE
 static int generation, trace_start, trace_end;
 #endif /* TRACE */
@@ -215,7 +228,7 @@ static void
 failed(const char *s)
 {
     perror(s);
-    exit_curses();
+    stop_curses();
     ExitProgram(EXIT_FAILURE);
 }
 #endif
@@ -224,7 +237,7 @@ static void
 cleanup(void)
 {
     USING_WINDOW1(stdscr, wrefresh, safe_wrefresh);
-    exit_curses();
+    stop_curses();
 }
 
 static void
@@ -247,13 +260,18 @@ draw_worm(WINDOW *win, void *data)
     WORM *w = (WORM *) data;
     const struct options *op;
     unsigned mask = (unsigned) (~(1 << (w - worm)));
-    chtype attrs = w->attrs | ((mask & pending) ? A_REVERSE : 0);
+    chtype attrs;
 
     int x;
     int y;
     int h;
 
     bool done = FALSE;
+    bool is_pending;
+
+    Locked(is_pending = ((mask & pending) != 0));
+
+    attrs = w->attrs | (is_pending ? A_REVERSE : 0);
 
     if ((x = w->xpos[h = w->head]) < 0) {
        wmove(win, y = w->ypos[h] = last_y, x = w->xpos[h] = 0);
@@ -335,9 +353,12 @@ draw_worm(WINDOW *win, void *data)
 static bool
 quit_worm(int bitnum)
 {
-    pending = (pending | (unsigned) (1 << bitnum));
+    Locked(pending = (pending | (unsigned) (1 << bitnum)));
+
     napms(10);                 /* let the other thread(s) have a chance */
-    pending = (pending & (unsigned) ~(1 << bitnum));
+
+    Locked(pending = (pending & (unsigned) ~(1 << bitnum)));
+
     return quitting;
 }
 
@@ -349,11 +370,7 @@ start_worm(void *arg)
     while (!quit_worm((int) (((struct worm *) arg) - worm))) {
        while (compare < sequence) {
            ++compare;
-#if HAVE_USE_WINDOW
-           use_window(stdscr, draw_worm, arg);
-#else
-           draw_worm(stdscr, arg);
-#endif
+           USING_WINDOW2(stdscr, draw_worm, arg);
        }
     }
     Trace(("...start_worm (done)"));
@@ -378,13 +395,7 @@ draw_all_worms(void)
     }
 #else
     for (n = 0, w = &worm[0]; n < number; n++, w++) {
-       if (
-#if HAVE_USE_WINDOW
-              USING_WINDOW2(stdscr, draw_worm, w)
-#else
-              draw_worm(stdscr, w)
-#endif
-           )
+       if (USING_WINDOW2(stdscr, draw_worm, w))
            done = TRUE;
     }
 #endif
@@ -602,8 +613,12 @@ main(int argc, char *argv[])
     USING_WINDOW1(stdscr, wrefresh, safe_wrefresh);
     nodelay(stdscr, TRUE);
 
+#ifdef USE_PTHREADS
+    pthread_mutex_init(&pending_mutex, NULL);
+#endif
+
     while (!done) {
-       ++sequence;
+       Locked(++sequence);
        if ((ch = get_input()) > 0) {
 #ifdef TRACE
            if (trace_start || trace_end) {