Move platform_thread to base/threading and put in the base namespace. I left ...

base/platform_thread.h

Index: base/platform_thread.h
===================================================================
--- base/platform_thread.h	(revision 70328)
+++ base/platform_thread.h	(working copy)
@@ -1,87 +1,24 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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.
 
-// WARNING: You should *NOT* be using this class directly.  PlatformThread is
-// the low-level platform-specific abstraction to the OS's threading interface.
-// You should instead be using a message-loop driven Thread, see thread.h.
 
 #ifndef BASE_PLATFORM_THREAD_H_
 #define BASE_PLATFORM_THREAD_H_
 #pragma once
 
-#include "base/basictypes.h"
+// This file is for backwards-compatibility to keep things compiling that use
+// the old location & lack of namespace.
+//
+// TODO(brettw) make all callers use the new location & namespace and delete
+// this file.
 
-// PlatformThreadHandle should not be assumed to be a numeric type, since the
-// standard intends to allow pthread_t to be a structure.  This means you
-// should not initialize it to a value, like 0.  If it's a member variable, the
-// constructor can safely "value initialize" using () in the initializer list.
-#if defined(OS_WIN)
-#include <windows.h>
-typedef DWORD PlatformThreadId;
-typedef void* PlatformThreadHandle;  // HANDLE
-const PlatformThreadHandle kNullThreadHandle = NULL;
-#elif defined(OS_POSIX)
-#include <pthread.h>
-typedef pthread_t PlatformThreadHandle;
-const PlatformThreadHandle kNullThreadHandle = 0;
-#if defined(OS_MACOSX)
-#include <mach/mach.h>
-typedef mach_port_t PlatformThreadId;
-#else  // OS_POSIX && !OS_MACOSX
-#include <unistd.h>
-typedef pid_t PlatformThreadId;
-#endif
-#endif
+#include "base/threading/platform_thread.h"
 
-const PlatformThreadId kInvalidThreadId = 0;
+using base::PlatformThread;
+using base::PlatformThreadHandle;
+using base::PlatformThreadId;
+using base::kNullThreadHandle;
+using base::kInvalidThreadId;
 
-// A namespace for low-level thread functions.
-class PlatformThread {
- public:
-  // Implement this interface to run code on a background thread.  Your
-  // ThreadMain method will be called on the newly created thread.
-  class Delegate {
-   public:
-    virtual ~Delegate() {}
-    virtual void ThreadMain() = 0;
-  };
-
-  // Gets the current thread id, which may be useful for logging purposes.
-  static PlatformThreadId CurrentId();
-
-  // Yield the current thread so another thread can be scheduled.
-  static void YieldCurrentThread();
-
-  // Sleeps for the specified duration (units are milliseconds).
-  static void Sleep(int duration_ms);
-
-  // Sets the thread name visible to a debugger.  This has no effect otherwise.
-  static void SetName(const char* name);
-
-  // Creates a new thread.  The |stack_size| parameter can be 0 to indicate
-  // that the default stack size should be used.  Upon success,
-  // |*thread_handle| will be assigned a handle to the newly created thread,
-  // and |delegate|'s ThreadMain method will be executed on the newly created
-  // thread.
-  // NOTE: When you are done with the thread handle, you must call Join to
-  // release system resources associated with the thread.  You must ensure that
-  // the Delegate object outlives the thread.
-  static bool Create(size_t stack_size, Delegate* delegate,
-                     PlatformThreadHandle* thread_handle);
-
-  // CreateNonJoinable() does the same thing as Create() except the thread
-  // cannot be Join()'d.  Therefore, it also does not output a
-  // PlatformThreadHandle.
-  static bool CreateNonJoinable(size_t stack_size, Delegate* delegate);
-
-  // Joins with a thread created via the Create function.  This function blocks
-  // the caller until the designated thread exits.  This will invalidate
-  // |thread_handle|.
-  static void Join(PlatformThreadHandle thread_handle);
-
- private:
-  DISALLOW_IMPLICIT_CONSTRUCTORS(PlatformThread);
-};
-
 #endif  // BASE_PLATFORM_THREAD_H_