| // 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_SCOPED_PROCESS_H_ |
| #define SANDBOX_LINUX_SERVICES_SCOPED_PROCESS_H_ |
| |
| #include "base/callback_forward.h" |
| #include "base/macros.h" |
| #include "base/process/process_handle.h" |
| #include "sandbox/sandbox_export.h" |
| |
| namespace sandbox { |
| |
| // fork() a child process that will run a Closure. |
| // After the Closure has run, the child will pause forever. If this object |
| // is detroyed, the child will be destroyed, even if the closure did not |
| // finish running. It's ok to signal the child from outside of this class to |
| // destroy it. |
| // This class cannot be instanciated from a multi-threaded process, as it needs |
| // to fork(). |
| class SANDBOX_EXPORT ScopedProcess { |
| public: |
| // A new process will be created and |child_callback| will run in the child |
| // process. This callback is allowed to terminate the process or to simply |
| // return. If the callback returns, the process will wait forever. |
| explicit ScopedProcess(const base::Closure& child_callback); |
| ~ScopedProcess(); |
| |
| // Wait for the process to exit. |
| // |got_signaled| tells how to interpret the return value: either as an exit |
| // code, or as a signal number. |
| // When this returns, the process will still not have been reaped and will |
| // survive as a zombie for the lifetime of this object. This method can be |
| // called multiple times. |
| int WaitForExit(bool* got_signaled); |
| |
| // Wait for the |child_callback| passed at construction to run. Return false |
| // if |child_callback| did not finish running and we know it never will (for |
| // instance the child crashed or used _exit()). |
| bool WaitForClosureToRun(); |
| base::ProcessId GetPid() { return child_process_id_; } |
| |
| private: |
| bool IsOriginalProcess(); |
| |
| base::ProcessId child_process_id_; |
| base::ProcessId process_id_; |
| int pipe_fds_[2]; |
| DISALLOW_COPY_AND_ASSIGN(ScopedProcess); |
| }; |
| |
| } // namespace sandbox |
| |
| #endif // SANDBOX_LINUX_SERVICES_SCOPED_PROCESS_H_ |