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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+// Copyright (c) 2006-2008 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 BASE_PROCESS_H_
+#define BASE_PROCESS_H_
+
+#include "base/basictypes.h"
+
+#include <sys/types.h>
+#ifdef OS_WIN
+#include <windows.h>
+#endif
+
+namespace base {
+
+// ProcessHandle is a platform specific type which represents the underlying OS
+// handle to a process.
+// ProcessId is a number which identifies the process in the OS.
+#if defined(OS_WIN)
+typedef HANDLE ProcessHandle;
+typedef DWORD ProcessId;
+#elif defined(OS_POSIX)
+// On POSIX, our ProcessHandle will just be the PID.
+typedef pid_t ProcessHandle;
+typedef pid_t ProcessId;
+#endif
+
+class Process {
+ public:
+ Process() : process_(0), last_working_set_size_(0) {}
+ explicit Process(ProcessHandle aHandle) :
+ process_(aHandle), last_working_set_size_(0) {}
+
+ // A handle to the current process.
+ static Process Current();
+
+ // Get/Set the handle for this process. The handle will be 0 if the process
+ // is no longer running.
+ ProcessHandle handle() const { return process_; }
+ void set_handle(ProcessHandle aHandle) { process_ = aHandle; }
+
+ // Get the PID for this process.
+ ProcessId pid() const;
+
+ // Is the this process the current process.
+ bool is_current() const;
+
+ // Close the process handle. This will not terminate the process.
+ void Close();
+
+ // Terminates the process with extreme prejudice. The given result code will
+ // be the exit code of the process. If the process has already exited, this
+ // will do nothing.
+ void Terminate(int result_code);
+
+ // A process is backgrounded when it's priority is lower than normal.
+ // Return true if this process is backgrounded, false otherwise.
+ bool IsProcessBackgrounded() const;
+
+ // Set a prcess as backgrounded. If value is true, the priority
+ // of the process will be lowered. If value is false, the priority
+ // of the process will be made "normal" - equivalent to default
+ // process priority.
+ // Returns true if the priority was changed, false otherwise.
+ bool SetProcessBackgrounded(bool value);
+
+ // Releases as much of the working set back to the OS as possible.
+ // Returns true if successful, false otherwise.
+ bool EmptyWorkingSet();
+
+ private:
+ ProcessHandle process_;
+ size_t last_working_set_size_;
+};
+
+} // namespace base
+
+#endif // BASE_PROCESS_H_