55 lines
2 KiB
C++
55 lines
2 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef SANDBOX_LINUX_SERVICES_SCOPED_PROCESS_H_
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#define SANDBOX_LINUX_SERVICES_SCOPED_PROCESS_H_
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#include "base/callback_forward.h"
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#include "base/macros.h"
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#include "base/process/process_handle.h"
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#include "sandbox/sandbox_export.h"
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namespace sandbox {
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// fork() a child process that will run a Closure.
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// After the Closure has run, the child will pause forever. If this object
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// is detroyed, the child will be destroyed, even if the closure did not
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// finish running. It's ok to signal the child from outside of this class to
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// destroy it.
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// This class cannot be instanciated from a multi-threaded process, as it needs
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// to fork().
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class SANDBOX_EXPORT ScopedProcess {
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public:
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// A new process will be created and |child_callback| will run in the child
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// process. This callback is allowed to terminate the process or to simply
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// return. If the callback returns, the process will wait forever.
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explicit ScopedProcess(const base::Closure& child_callback);
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~ScopedProcess();
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// Wait for the process to exit.
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// |got_signaled| tells how to interpret the return value: either as an exit
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// code, or as a signal number.
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// When this returns, the process will still not have been reaped and will
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// survive as a zombie for the lifetime of this object. This method can be
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// called multiple times.
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int WaitForExit(bool* got_signaled);
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// Wait for the |child_callback| passed at construction to run. Return false
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// if |child_callback| did not finish running and we know it never will (for
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// instance the child crashed or used _exit()).
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bool WaitForClosureToRun();
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base::ProcessId GetPid() { return child_process_id_; }
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private:
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bool IsOriginalProcess();
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base::ProcessId child_process_id_;
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base::ProcessId process_id_;
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int pipe_fds_[2];
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DISALLOW_COPY_AND_ASSIGN(ScopedProcess);
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};
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} // namespace sandbox
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#endif // SANDBOX_LINUX_SERVICES_SCOPED_PROCESS_H_
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