commit 273e144215bbe3042686577032e584c4ec701447
author Iliyan Malchev <malchev@google.com> Mon Apr 10 14:09:04 2017 -0700
committer Iliyan Malchev <malchev@google.com> Tue Apr 11 13:13:12 2017 +0000
tree 49482f95d4ce86b71d2800dcfa8867fdd6575702
parent 3206224672d0a86cdede609e83ccc985754fb6ec

IServiceManager: dump stack on blocked vndbinder requests

Dump the stack of the thread requesting a service over /dev/vndbinder,
when the requestor is blocked waiting on the service.  This is very
helpful in identifying bugs in converting code to /dev/vndbinder.

Test: sailfish

Change-Id: Iaaf6a83df3465dd5b64cd83c19d8918cfa01d3d8
Signed-off-by: Iliyan Malchev <malchev@google.com>

libs/binder/IServiceManager.cpp

diff --git a/libs/binder/IServiceManager.cpp b/libs/binder/IServiceManager.cpp
index 3aeff2e..c7a0f43 100644
--- a/libs/binder/IServiceManager.cpp
+++ b/libs/binder/IServiceManager.cpp
@@ -23,6 +23,7 @@
 #include <binder/Parcel.h>
 #include <utils/String8.h>
 #include <utils/SystemClock.h>
+#include <utils/CallStack.h>
 
 #include <private/binder/Static.h>
 
@@ -136,7 +137,12 @@
         unsigned n;
         for (n = 0; n < 5; n++){
             if (n > 0) {
-                ALOGI("Waiting for service %s...", String8(name).string());
+                if (!strcmp(ProcessState::self()->getDriverName().c_str(), "/dev/vndbinder")) {
+                    ALOGI("Waiting for vendor service %s...", String8(name).string());
+                    CallStack stack(LOG_TAG);
+                } else {
+                    ALOGI("Waiting for service %s...", String8(name).string());
+                }
                 sleep(1);
             }
             sp<IBinder> svc = checkService(name);