Lock game an position file during writing

[xboard.git] / winboard / winboard.c

diff --git a/winboard/winboard.c b/winboard/winboard.c
index 50d82dd..c8bf0b2 100644 (file)
--- a/winboard/winboard.c
+++ b/winboard/winboard.c
@@ -73,6 +73,7 @@
 #include <richedit.h>\r
 #include <mmsystem.h>\r
 #include <ctype.h>\r
+#include <io.h>\r
 \r
 #if __GNUC__\r
 #include <errno.h>\r
@@ -5095,7 +5096,7 @@ WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
 \r
     case IDM_Engine2Options:\r
       savedHwnd = hwnd;\r
-      if(WaitForSecond(SettingsMenuIfReady)) break;\r
+      if(WaitForEngine(&second, SettingsMenuIfReady)) break;\r
       EngineOptionsPopup(hwnd, &second);\r
       break;\r
 \r
@@ -8113,7 +8114,8 @@ DisplayMessage(char *str1, char *str2)
     if (len > remain) len = remain;\r
     strncat(messageText, str2, len);\r
   }\r
-  messageText[MESSAGE_TEXT_MAX - 1] = NULLCHAR;\r
+  messageText[MESSAGE_TEXT_MAX - 1] = NULLCHAR;
+  safeStrCpy(lastMsg, messageText, MSG_SIZ);
 \r
   if (hwndMain == NULL || IsIconic(hwndMain)) return;\r
 \r
@@ -9783,3 +9785,19 @@ SettingsPopUp(ChessProgramState *cps)
 {     // [HGM] wrapper needed because handles must not be passed through back-end\r
       EngineOptionsPopup(savedHwnd, cps);\r
 }\r
+\r
+int flock(int fid, int code)\r
+{\r
+    HANDLE hFile = (HANDLE) _get_osfhandle(fid);\r
+    OVERLAPPED ov;\r
+    ov.hEvent = NULL;\r
+    ov.Offset = 0;\r
+    ov.OffsetHigh = 0;\r
+    switch(code) {\r
+      case 1: LockFileEx(hFile, LOCKFILE_EXCLUSIVE_LOCK, 0, 1024, 0, &ov); break;   // LOCK_SH\r
+      case 2: LockFileEx(hFile, LOCKFILE_EXCLUSIVE_LOCK, 0, 1024, 0, &ov); break;   // LOCK_EX\r
+      case 3: UnlockFileEx(hFile, 0, 1024, 0, &ov); break; // LOCK_UN\r
+      default: return -1;\r
+    }\r
+    return 0;\r
+}\r