commit 84ddb34a3af77dbe490aaa07b738bbfd7109d5ba
author Christopher Ferris <cferris@google.com> Fri Oct 31 21:34:38 2014 -0700
committer Christopher Ferris <cferris@google.com> Sun Nov 02 23:36:15 2014 -0800
tree b73413cade2188ed72248876feae6266a504a0e6
parent 4cafe2ff89b49329e0e880900195d8e061bd3750

Fix debuggerd issues.

- Fix a problem where a tid exits before the attach completes, and it
  causes debuggerd to self terminate.
- Fix a problem where sibling tid dumps do not properly wait for the tid
  to get signalled.

Bug: 17800180
Bug: 12567315
Change-Id: Ic3cd619cc2c72402f9a45f14abeed4721b50d64d

debuggerd/backtrace.cpp

diff --git a/debuggerd/backtrace.cpp b/debuggerd/backtrace.cpp
index e49ef9b..c2a1dbc 100644
--- a/debuggerd/backtrace.cpp
+++ b/debuggerd/backtrace.cpp
@@ -88,7 +88,9 @@
     return;
   }
 
-  wait_for_stop(tid, total_sleep_time_usec);
+  if (!attached && wait_for_sigstop(tid, total_sleep_time_usec, detach_failed) == -1) {
+    return;
+  }
 
   UniquePtr<Backtrace> backtrace(Backtrace::Create(tid, BACKTRACE_CURRENT_THREAD));
   if (backtrace->Unwind(0)) {