commit 3b88766a3d6d1b9aff63b6ef972fd8034f53ff11
author Stefan Sauer <ensonic@google.com> Mon Mar 16 16:54:55 2015 +0100
committer ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> Thu Mar 19 17:58:33 2015 +0000
tree 4763a301cfa9180a181f0fc0a9ed0011e0dc5d9d
parent 5672f8b2e41a673e874b753d6492d5db841ae594

metrics: tell what file we can't open on error

Use PDLOG and also log the filename.

BUG=chromium:467586
TEST=rebuild image and checked the log

Change-Id: I72f9838477adad71e79cc25f1f3a40bb9781b848
Reviewed-on: https://chromium-review.googlesource.com/260261
Tested-by: Stefan Sauer <ensonic@google.com>
Reviewed-by: Bertrand Simonnet <bsimonnet@chromium.org>
Commit-Queue: Stefan Sauer <ensonic@google.com>

metrics/serialization/serialization_utils.cc

diff --git a/metrics/serialization/serialization_utils.cc b/metrics/serialization/serialization_utils.cc
index 80e81d2..abb73ab 100644
--- a/metrics/serialization/serialization_utils.cc
+++ b/metrics/serialization/serialization_utils.cc
@@ -174,7 +174,7 @@
                                       READ_WRITE_ALL_FILE_FLAGS));
 
   if (file_descriptor.get() < 0) {
-    DLOG(ERROR) << "error opening the file";
+    DPLOG(ERROR) << filename << ": cannot open";
     return false;
   }
 
@@ -183,7 +183,7 @@
   // underneath us. Keep the file locked as briefly as possible.
   // Freeing file_descriptor will close the file and and remove the lock.
   if (HANDLE_EINTR(flock(file_descriptor.get(), LOCK_EX)) < 0) {
-    DLOG(ERROR) << "error locking" << filename << " : " << errno;
+    DPLOG(ERROR) << filename << ": cannot lock";
     return false;
   }