commit e22aec741f1530cde86c38989bcc2f87626b93b0
author Dan Stoza <stoza@google.com> Mon Aug 01 13:20:59 2016 -0700
committer Dan Stoza <stoza@google.com> Mon Aug 01 16:59:05 2016 -0700
tree f4213d902a3a862348ffb78fd6f213374512ca45
parent acff43dca6a3c8a29f449706967d4de21c373d26

SF/HWC2: Add a layer minidump

Adds a brief dump of visible HWC layers to replace functionality that
was lost when moving from HWC1 to HWC2.

Bug: 30242002
Change-Id: I7331517c7d1eb515b33d5db85cdaf23d8b9ae9d9

services/surfaceflinger/SurfaceFlinger.cpp

diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index a36a8cd..715ce99 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -3039,6 +3039,26 @@
      * VSYNC state
      */
     mEventThread->dump(result);
+    result.append("\n");
+
+    /*
+     * HWC layer minidump
+     */
+    for (size_t d = 0; d < mDisplays.size(); d++) {
+        const sp<const DisplayDevice>& displayDevice(mDisplays[d]);
+        int32_t hwcId = displayDevice->getHwcDisplayId();
+        if (hwcId == DisplayDevice::DISPLAY_ID_INVALID) {
+            continue;
+        }
+
+        result.appendFormat("Display %d HWC layers:\n", hwcId);
+        Layer::miniDumpHeader(result);
+        for (size_t l = 0; l < count; l++) {
+            const sp<Layer>& layer(currentLayers[l]);
+            layer->miniDump(result, hwcId);
+        }
+        result.append("\n");
+    }
 
     /*
      * Dump HWComposer state