Linux: inform the Zygote when it's waiting on a dead process

content/browser/zygote_host/zygote_host_impl_linux.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/zygote_host/zygote_host_impl_linux.h"
 
 #include <sys/socket.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
@@ skipping 433 matching lines @@
   Pickle pickle;
 
   pickle.WriteInt(kZygoteCommandReap);
   pickle.WriteInt(process);
   if (!SendMessage(pickle, NULL))
     LOG(ERROR) << "Failed to send Reap message to zygote";
 }
 
 base::TerminationStatus ZygoteHostImpl::GetTerminationStatus(
     base::ProcessHandle handle,
+    bool known_dead,
     int* exit_code) {
   DCHECK(init_);
   Pickle pickle;
   pickle.WriteInt(kZygoteCommandGetTerminationStatus);
+  pickle.WriteBool(known_dead);
   pickle.WriteInt(handle);
 
   // Set this now to handle the early termination cases.
   if (exit_code)
     *exit_code = RESULT_CODE_NORMAL_EXIT;
 
   static const unsigned kMaxMessageLength = 128;
   char buf[kMaxMessageLength];
   ssize_t len;
   {
@@ skipping 34 matching lines @@
   return RenderSandboxHostLinux::GetInstance()->pid();
 }
 
 int ZygoteHostImpl::GetSandboxStatus() const {
   if (have_read_sandbox_status_word_)
     return sandbox_status_;
   return 0;
 }
 
 }  // namespace content