| // Copyright 2014 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. |
| |
| #ifndef SANDBOX_LINUX_SERVICES_THREAD_HELPERS_H_ |
| #define SANDBOX_LINUX_SERVICES_THREAD_HELPERS_H_ |
| |
| #include "base/basictypes.h" |
| #include "sandbox/sandbox_export.h" |
| |
| namespace base { class Thread; } |
| |
| namespace sandbox { |
| |
| class SANDBOX_EXPORT ThreadHelpers { |
| public: |
| // Check whether the current process is single threaded. |proc_self_tasks| |
| // can be a file descriptor to /proc/self/task/ and remains owned by the |
| // caller or -1. |
| // If |proc_self_tasks| is -1, this method will open /proc/self/task/ and |
| // crash if it cannot. |
| static bool IsSingleThreaded(int proc_self_task); |
| |
| // Stop |thread| and ensure that it does not have an entry in |
| // /proc/self/task/ from the point of view of the current thread. This is |
| // the way to stop threads before calling IsSingleThreaded(). |
| static bool StopThreadAndWatchProcFS(int proc_self_tasks, |
| base::Thread* thread); |
| |
| private: |
| DISALLOW_IMPLICIT_CONSTRUCTORS(ThreadHelpers); |
| }; |
| |
| } // namespace sandbox |
| |
| #endif // SANDBOX_LINUX_SERVICES_THREAD_HELPERS_H_ |