From 963a57e3368512867f008d5cbf37d726573519f9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bar=C4=B1=C5=9F=20Metin?= <baris@pardus.org.tr>
Date: Sun, 31 Jul 2005 22:04:40 +0000
Subject: [PATCH] =?UTF-8?q?Eray=20ile=20jabber'dan=20konu=C5=9Ftuk=20ve=20?=
 =?UTF-8?q?karar=20verdik.=20Ayn=C4=B1=20anda=20yaln=C4=B1zca=20bir=20pisi?=
 =?UTF-8?q?=20process'i=20=C3=A7al=C4=B1=C5=9Fabiliyor=20art=C4=B1k.?=
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---
 pisi/packagedb.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/pisi/packagedb.py b/pisi/packagedb.py
index 1961bcfc..27706d05 100644
--- a/pisi/packagedb.py
+++ b/pisi/packagedb.py
@@ -32,7 +32,14 @@ class PackageDB(object):
         self.lockfile = self.fname + '.lock'
  
         self.fdummy = file(self.lockfile, 'w')
-        fcntl.flock(self.fdummy, fcntl.LOCK_EX)
+        try:
+            fcntl.flock(self.fdummy, fcntl.LOCK_EX | fcntl.LOCK_NB)
+        except IOError:
+            import sys
+            from ui import ui
+            ui.error("Another instance of PISI is running. Try later!\n")
+            sys.exit(1)
+            
 
     def has_package(self, name):
         name = str(name)