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Unified Diff: sandbox/linux/services/scoped_process.h

Issue 670183003: Update from chromium 62675d9fb31fb8cedc40f68e78e8445a74f362e7 (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 6 years, 2 months ago
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Index: sandbox/linux/services/scoped_process.h
diff --git a/sandbox/linux/services/scoped_process.h b/sandbox/linux/services/scoped_process.h
new file mode 100644
index 0000000000000000000000000000000000000000..a28131ee67d6b123b223a2ca86b0ed49c985c3b0
--- /dev/null
+++ b/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_
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