From: Colin Finck <colin@reactos.org>
Date: Tue, 3 Feb 2009 22:25:39 +0000 (+0000)
Subject: Gabriel Ilardi (gabrielilardi@hotmail.it)
X-Git-Tag: backups/danny-web@40415~24^2~694
X-Git-Url: https://git.reactos.org/?p=reactos.git;a=commitdiff_plain;h=7091708541af3d698c94cc6f8f5d2ef00138d552;hp=b24b8f4a23a1187e7ba1cb5245cee8dc0c1d7d08;ds=inline

Gabriel Ilardi (gabrielilardi@hotmail.it)
- Allow only one instance of Task-Manager to be run at the same time

See issue #3976 for more details.

svn path=/trunk/; revision=39353
---

diff --git a/reactos/base/applications/taskmgr/taskmgr.c b/reactos/base/applications/taskmgr/taskmgr.c
index f11413adf12..75fcb61dcf8 100644
--- a/reactos/base/applications/taskmgr/taskmgr.c
+++ b/reactos/base/applications/taskmgr/taskmgr.c
@@ -51,6 +51,12 @@ int APIENTRY wWinMain(HINSTANCE hInstance,
     HANDLE hProcess;
     HANDLE hToken;
     TOKEN_PRIVILEGES tkp;
+    HANDLE hMutex;
+
+    /* check wether we're already running or not */
+    hMutex = CreateMutexW(NULL, TRUE, L"taskmgrros");
+    if ((!hMutex) || (GetLastError() == ERROR_ALREADY_EXISTS))
+        return 1;
 
     /* Initialize global variables */
     hInst = hInstance;