From: NeilBrown <neilb@suse.de>
Date: Sat, 21 Apr 2012 10:19:14 +0000 (+1000)
Subject: Trivial tracing python library
X-Git-Url: http://git.neil.brown.name/?a=commitdiff_plain;h=43f3b985f39e067fb8efa5a2e604bc9c39c28e29;p=plato.git

Trivial tracing python library

Allows tracing that can easily be turned on/off

Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/lib/tracing.py b/lib/tracing.py
new file mode 100644
index 0000000..1424377
--- /dev/null
+++ b/lib/tracing.py
@@ -0,0 +1,19 @@
+
+# trivial library for including tracing in programs
+# It can be turned on with PYTRACE=1 in environment
+
+import os,time,sys
+
+tracing = False
+
+if 'PYTRACE' in os.environ:
+    if os.environ['PYTRACE']:
+        tracing = True
+
+def log(*mesg):
+    if tracing:
+        print time.ctime(),
+        for m in mesg:
+            print m,
+        print
+        sys.stdout.flush()