X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ftty%2Ftty_update.c;h=c08f853f201ecaf568574d1ec5939d95d0d72c48;hp=46a4786db9d4328d21b585a121e95e0b66e27772;hb=71244b7927a8918c0b09a8eb13b017ef0ebb6de8;hpb=3eda6f30a84d53844d2ebceadb457e2e7e9cfbf3

diff --git a/ncurses/tty/tty_update.c b/ncurses/tty/tty_update.c
index 46a4786d..c08f853f 100644
--- a/ncurses/tty/tty_update.c
+++ b/ncurses/tty/tty_update.c
@@ -84,7 +84,7 @@
 
 #include <ctype.h>
 
-MODULE_ID("$Id: tty_update.c,v 1.288 2017/03/16 08:24:12 tom Exp $")
+MODULE_ID("$Id: tty_update.c,v 1.290 2017/07/22 23:30:28 tom Exp $")
 
 /*
  * This define controls the line-breakout optimization.  Every once in a
@@ -769,9 +769,12 @@ TINFO_DOUPDATE(NCURSES_SP_DCL0)
 
     T((T_CALLED("_nc_tinfo:doupdate(%p)"), (void *) SP_PARM));
 
-    if (SP_PARM == 0)
-	returnCode(ERR);
+    _nc_lock_global(update);
 
+    if (SP_PARM == 0) {
+	_nc_unlock_global(update);
+	returnCode(ERR);
+    }
 #if !USE_REENTRANT
     /*
      * It is "legal" but unlikely that an application could assign a new
@@ -792,9 +795,10 @@ TINFO_DOUPDATE(NCURSES_SP_DCL0)
 
     if (CurScreen(SP_PARM) == 0
 	|| NewScreen(SP_PARM) == 0
-	|| StdScreen(SP_PARM) == 0)
+	|| StdScreen(SP_PARM) == 0) {
+	_nc_unlock_global(update);
 	returnCode(ERR);
-
+    }
 #ifdef TRACE
     if (USE_TRACEF(TRACE_UPDATE)) {
 	if (CurScreen(SP_PARM)->_clear)
@@ -812,7 +816,8 @@ TINFO_DOUPDATE(NCURSES_SP_DCL0)
 	SP_PARM->_fifohold--;
 
 #if USE_SIZECHANGE
-    if (SP_PARM->_endwin || _nc_handle_sigwinch(SP_PARM)) {
+    if ((SP_PARM->_endwin == ewRunning)
+	|| _nc_handle_sigwinch(SP_PARM)) {
 	/*
 	 * This is a transparent extension:  XSI does not address it,
 	 * and applications need not know that ncurses can do it.
@@ -825,7 +830,7 @@ TINFO_DOUPDATE(NCURSES_SP_DCL0)
     }
 #endif
 
-    if (SP_PARM->_endwin) {
+    if (SP_PARM->_endwin == ewSuspend) {
 
 	T(("coming back from shell mode"));
 	NCURSES_SP_NAME(reset_prog_mode) (NCURSES_SP_ARG);
@@ -834,7 +839,7 @@ TINFO_DOUPDATE(NCURSES_SP_DCL0)
 	NCURSES_SP_NAME(_nc_screen_resume) (NCURSES_SP_ARG);
 	SP_PARM->_mouse_resume(SP_PARM);
 
-	SP_PARM->_endwin = FALSE;
+	SP_PARM->_endwin = ewRunning;
     }
 #if USE_TRACE_TIMES
     /* zero the metering machinery */
@@ -1102,6 +1107,7 @@ TINFO_DOUPDATE(NCURSES_SP_DCL0)
 
     _nc_signal_handler(TRUE);
 
+    _nc_unlock_global(update);
     returnCode(OK);
 }