Temporary debug spew for diagnosing Linux mochitest hang.

dom/plugins/PluginModuleChild.cpp

@@ -281,6 +281,15 @@ PluginModuleChild::ActorDestroy(ActorDestroyReason why)
 {
     // doesn't matter why we're being destroyed; it's up to us to
     // initiate (clean) shutdown
+
+
+
+#ifdef OS_LINUX
+    fprintf(stderr, "TEST-UNEXPECTED-FAIL | plugin process %d | initiating shutdown\n", getpid());
+#endif
+
+
+
     XRE_ShutdownChildProcess();
 }
 

ipc/chromium/src/base/process_util_linux.cc

@@ -62,6 +62,12 @@ bool LaunchApp(const std::vector<std::string>& argv,
 #endif
     exit(127);
   } else {
+
+
+      fprintf(stderr, "TEST-UNEXPECTED-FAIL | ==> process %d launched | child process %d\n", GetCurrentProcId(), pid);
+
+
+
     gProcessLog.print("==> process %d launched child process %d\n",
                       GetCurrentProcId(), pid);
     if (wait)

ipc/chromium/src/chrome/common/process_watcher_posix_sigchld.cc

@@ -54,6 +54,12 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 
+
+
+#include <stdio.h>
+
+
+
 #include "base/eintr_wrapper.h"
 #include "base/message_loop.h"
 #include "base/process_util.h"
@@ -189,6 +195,14 @@ public:
     ChildReaper::OnSignal(sig);
 
     if (!process_) {
+
+
+
+      fprintf(stderr, "TEST-UNEXPECTED-FAIL | process %d reaped | child process (got SIGCHLD, exited normally)\n", getpid());
+
+
+
+
       MessageLoop::current()->RemoveDestructionObserver(this);
       delete this;
     }
@@ -200,6 +214,13 @@ public:
     DCHECK(process_);
 
     WaitForChildExit();
+
+
+
+    fprintf(stderr, "TEST-UNEXPECTED-FAIL | process %d reaped | child process (waitpid() on shutdown)\n", getpid());
+
+
+
     process_ = 0;
 
     // XXX don't think this is necessary, since destruction can only
@@ -239,8 +260,16 @@ ProcessWatcher::EnsureProcessTerminated(base::ProcessHandle process,
   DCHECK(process != base::GetCurrentProcId());
   DCHECK(process > 0);
 
-  if (IsProcessDead(process))
+  if (IsProcessDead(process)) {
+
+
+
+    fprintf(stderr, "TEST-UNEXPECTED-FAIL | process %d reaped | child process %d (it was already dead)\n", getpid(), process);
+
+
+
     return;
+  }
 
   MessageLoopForIO* loop = MessageLoopForIO::current();
   if (force) {

toolkit/xre/nsAppRunner.cpp

@@ -3592,6 +3592,19 @@ XRE_main(int argc, char* argv[], const nsXREAppData* aAppData)
 
   XRE_DeinitCommandLine();
 
+
+
+
+
+
+#ifdef OS_LINUX
+  fprintf(stderr, "TEST-UNEXPECTED-FAIL | browser process %d | exiting\n", getpid());
+#endif
+
+
+
+
+
   return NS_FAILED(rv) ? 1 : 0;
 }
 

toolkit/xre/nsEmbedFunctions.cpp

@@ -371,6 +371,13 @@ XRE_InitChildProcess(int aArgc,
     sIOMessageLoop = nsnull;
   }
 
+
+#ifdef OS_LINUX
+  fprintf(stderr, "TEST-UNEXPECTED-FAIL | plugin process %d | IO thread joined XPCOM thread, exiting\n", getpid());
+#endif
+
+
+
   NS_LogTerm();
   return XRE_DeinitCommandLine();
 }
@@ -503,6 +510,15 @@ XRE_ShutdownChildProcess()
     NS_ABORT_IF_FALSE(!!ioLoop, "Bad shutdown order");
 
     ioLoop->PostTask(FROM_HERE, new MessageLoop::QuitTask());
+
+
+
+#ifdef OS_LINUX
+    fprintf(stderr, "TEST-UNEXPECTED-FAIL | plugin process %d | posted quit task to IO thread\n", getpid());
+#endif
+
+
+
 }
 
 namespace {