base: Move renderer threads to the appropriate cpuset.

content/child/child_process.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/child/child_process.h"
 
 #include <string.h>
 
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 85 matching lines @@
   DCHECK(!main_thread_.get() ||  // null in unittests.
          main_thread_->message_loop()->task_runner()->BelongsToCurrentThread());
   DCHECK(ref_count_);
   if (--ref_count_)
     return;
 
   if (main_thread_)  // null in unittests.
     main_thread_->OnProcessFinalRelease();
 }
 
+#if defined(OS_LINUX)
+void ChildProcess::SetIOThreadPriority(
+    base::ThreadPriority io_thread_priority) {
+  DCHECK(main_thread_.get());

[Tom Sepez, 2016/09/19 22:54:04]

DCHECK doesn't buy us much, we'll segv in the next line anyways if its null.

[reveman, 2016/09/19 23:14:22]

Makes sense. Done.

+  main_thread_->SetThreadPriority(io_thread_.GetThreadId(), io_thread_priority);
+}
+#endif
+
 ChildProcess* ChildProcess::current() {
   return g_lazy_tls.Pointer()->Get();
 }
 
 base::WaitableEvent* ChildProcess::GetShutDownEvent() {
   return &shutdown_event_;
 }
 
 void ChildProcess::WaitForDebugger(const std::string& label) {
 #if defined(OS_WIN)
@@ skipping 29 matching lines @@
   memset(&sa, 0, sizeof(sa));
   sa.sa_handler = SigUSR1Handler;
   sigaction(SIGUSR1, &sa, NULL);
 
   pause();
 #endif  // defined(OS_ANDROID)
 #endif  // defined(OS_POSIX)
 }
 
 }  // namespace content