commit d83d67b5d5e98b7f0bdf54b68f6ea28fa4905a33
author Mathias Agopian <mathias@google.com> Mon Jul 30 15:10:35 2012 -0700
committer Mathias Agopian <mathias@google.com> Mon Jul 30 15:10:35 2012 -0700
tree 6bc8597b19bf03006341a25680ff5e2c7b5a9691
parent c666cae2d5995097ec49a87e375e2afdd92802b7

log more info on fence sync_merge error

also fix a typo where the wrong value was passed to sterror.

Change-Id: I4df2abe582e14c8f816b65818f4593a6bd3c23ea

libs/ui/Fence.cpp

diff --git a/libs/ui/Fence.cpp b/libs/ui/Fence.cpp
index 932bcdd..cec5876 100644
--- a/libs/ui/Fence.cpp
+++ b/libs/ui/Fence.cpp
@@ -55,8 +55,10 @@
     ATRACE_CALL();
     int result = sync_merge(name.string(), f1->mFenceFd, f2->mFenceFd);
     if (result == -1) {
-        ALOGE("merge: sync_merge returned an error: %s (%d)", strerror(-errno),
-                errno);
+        status_t err = -errno;
+        ALOGE("merge: sync_merge(\"%s\", %d, %d) returned an error: %s (%d)",
+                name.string(), f1->mFenceFd, f2->mFenceFd,
+                strerror(-err), err);
         return NO_FENCE;
     }
     return sp<Fence>(new Fence(result));