commit 56f075e44fdb176d97316ea99fce109eeb052d66
author Mark Salyzyn <salyzyn@google.com> Thu Dec 29 07:26:30 2016 -0800
committer Mark Salyzyn <salyzyn@google.com> Tue Apr 18 14:59:46 2017 -0700
tree c3a9bee8908e3068030b172b199e529ca909112e
parent 4785a20fa412b2c44254b613a6885142988355b2

logd: report log reader instantiation

Helpful instrumentation to determine who is waiting for logger data.

Test: manual
Bug: 37274132
Bug: 37378309
Change-Id: I14fb1d9d15ae413930121048b770852359f06682

logd/LogReader.cpp

diff --git a/logd/LogReader.cpp b/logd/LogReader.cpp
index af19279..feb105f 100644
--- a/logd/LogReader.cpp
+++ b/logd/LogReader.cpp
@@ -15,6 +15,7 @@
  */
 
 #include <ctype.h>
+#include <inttypes.h>
 #include <poll.h>
 #include <sys/prctl.h>
 #include <sys/socket.h>
@@ -192,6 +193,12 @@
         }
     }
 
+    android::prdebug(
+        "logdr: UID=%d GID=%d PID=%d %c tail=%lu logMask=%x pid=%d "
+        "start=%" PRIu64 "ns timeout=%" PRIu64 "ns\n",
+        cli->getUid(), cli->getGid(), cli->getPid(), nonBlock ? 'n' : 'b', tail,
+        logMask, (int)pid, sequence.nsec(), timeout);
+
     FlushCommand command(*this, nonBlock, tail, logMask, pid, sequence, timeout);
 
     // Set acceptable upper limit to wait for slow reader processing b/27242723