commit 1f64cfadf60b0a98818d415dd101c38f06dd4c89
author Lalit Maganti <lalitm@google.com> Tue Sep 18 13:20:02 2018 +0100
committer Lalit Maganti <lalitm@google.com> Tue Sep 18 13:33:14 2018 +0000
tree aed422c20fd909fca87e579cab56b05792601409
parent b2d166b3ff83af23968320acb6cfc37a239d4d4b

trace_processor: add idle slices to the sched table

This makes reasoning about logic in SPAN JOIN a lot simpler and also
allows for analysis about CPU states during idle scheduling.

Change-Id: I3f8e994ad2a06206bda4ccbefd2c9b7cbf8b9371

src/trace_processor/trace_storage.h

diff --git a/src/trace_processor/trace_storage.h b/src/trace_processor/trace_storage.h
index 3515f76..f267f65 100644
--- a/src/trace_processor/trace_storage.h
+++ b/src/trace_processor/trace_storage.h
@@ -189,7 +189,7 @@
   }
 
   Thread* GetMutableThread(UniqueTid utid) {
-    PERFETTO_DCHECK(utid > 0 && utid < unique_threads_.size());
+    PERFETTO_DCHECK(utid >= 0 && utid < unique_threads_.size());
     return &unique_threads_[utid];
   }
 
@@ -205,7 +205,8 @@
   }
 
   const Thread& GetThread(UniqueTid utid) const {
-    PERFETTO_DCHECK(utid > 0 && utid < unique_threads_.size());
+    // Allow utid == 0 for idle thread retrieval.
+    PERFETTO_DCHECK(utid >= 0 && utid < unique_threads_.size());
     return unique_threads_[utid];
   }