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Diffstat (limited to 'chromium/sandbox/linux/services/scoped_process.h')
-rw-r--r-- | chromium/sandbox/linux/services/scoped_process.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/chromium/sandbox/linux/services/scoped_process.h b/chromium/sandbox/linux/services/scoped_process.h new file mode 100644 index 00000000000..a28131ee67d --- /dev/null +++ b/chromium/sandbox/linux/services/scoped_process.h @@ -0,0 +1,55 @@ +// 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/basictypes.h" +#include "base/callback_forward.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_ |