base: only commit useful trace events

If the length of a trace event entry is zero it should be ommitted. Fixes #851.
2013-08-21 16:57:46 +02:00 · 2013-08-21 16:57:46 +02:00 · 82eb5e4323
parent ae87f50ce3
commit 82eb5e4323
1 changed files with 4 additions and 0 deletions
--- a/base/include/base/trace/buffer.h
+++ b/base/include/base/trace/buffer.h
@ -76,6 +76,10 @@ class Genode::Trace::Buffer

 		void commit(size_t len)
 		{
+			/* omit empty entries */
+			if (len == 0)
+				return;
+
 			_head_entry()->len = len;

 			/* advance head offset, wrap when reaching buffer boundary */