X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Fbase%2Fresizeterm.c;h=8bea743a3d22552b0ea39441e6f2c37334291609;hp=61761bfa65b7339e53cc89aed8f30d689034b9b7;hb=e0371a7943009d611a4dc080dcddfcdfba9f589b;hpb=e6c7286022d8a7a7ea7f15a6ffa7f9addb00e42d

diff --git a/ncurses/base/resizeterm.c b/ncurses/base/resizeterm.c
index 61761bfa..8bea743a 100644
--- a/ncurses/base/resizeterm.c
+++ b/ncurses/base/resizeterm.c
@@ -41,7 +41,7 @@
 #include <curses.priv.h>
 #include <term.h>
 
-MODULE_ID("$Id: resizeterm.c,v 1.22 2007/09/29 20:37:13 tom Exp $")
+MODULE_ID("$Id: resizeterm.c,v 1.24 2007/12/22 23:20:31 tom Exp $")
 
 #define stolen_lines (screen_lines - SP->_lines_avail)
 
@@ -66,6 +66,7 @@ show_window_sizes(const char *name)
 {
     WINDOWLIST *wp;
 
+    _nc_lock_global(windowlist);
     _tracef("%s resizing: %2d x %2d (%2d x %2d)", name, LINES, COLS,
 	    screen_lines, screen_columns);
     for (wp = _nc_windows; wp != 0; wp = wp->next) {
@@ -76,6 +77,7 @@ show_window_sizes(const char *name)
 		(long) wp->win._begy,
 		(long) wp->win._begx);
     }
+    _nc_unlock_global(windowlist);
 }
 #endif
 
@@ -250,12 +252,19 @@ NCURSES_EXPORT(int)
 resize_term(int ToLines, int ToCols)
 {
     int result = OK EXTRA_ARGS;
-    int was_stolen = (screen_lines - SP->_lines_avail);
+    int was_stolen;
 
     T((T_CALLED("resize_term(%d,%d) old(%d,%d)"),
        ToLines, ToCols,
        screen_lines, screen_columns));
 
+    if (SP == 0) {
+	returnCode(ERR);
+    }
+
+    _nc_lock_global(windowlist);
+
+    was_stolen = (screen_lines - SP->_lines_avail);
     if (is_term_resized(ToLines, ToCols)) {
 	int myLines = CurLines = screen_lines;
 	int myCols = CurCols = screen_columns;
@@ -311,6 +320,8 @@ resize_term(int ToLines, int ToCols)
     SET_LINES(ToLines - was_stolen);
     SET_COLS(ToCols);
 
+    _nc_unlock_global(windowlist);
+
     returnCode(result);
 }
 
@@ -325,22 +336,25 @@ resize_term(int ToLines, int ToCols)
 NCURSES_EXPORT(int)
 resizeterm(int ToLines, int ToCols)
 {
-    int result = OK;
-
-    SP->_sig_winch = FALSE;
+    int result = ERR;
 
     T((T_CALLED("resizeterm(%d,%d) old(%d,%d)"),
        ToLines, ToCols,
        screen_lines, screen_columns));
 
-    if (is_term_resized(ToLines, ToCols)) {
+    if (SP != 0) {
+	result = OK;
+	SP->_sig_winch = FALSE;
+
+	if (is_term_resized(ToLines, ToCols)) {
 
 #if USE_SIGWINCH
-	ungetch(KEY_RESIZE);	/* so application can know this */
-	clearok(curscr, TRUE);	/* screen contents are unknown */
+	    ungetch(KEY_RESIZE);	/* so application can know this */
+	    clearok(curscr, TRUE);	/* screen contents are unknown */
 #endif
 
-	result = resize_term(ToLines, ToCols);
+	    result = resize_term(ToLines, ToCols);
+	}
     }
 
     returnCode(result);