Move webrtc/{base => rtc_base}

webrtc/base/thread_annotations.h

 //
 // Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
 //
 // Use of this source code is governed by a BSD-style license
 // that can be found in the LICENSE file in the root of the source
 // tree. An additional intellectual property rights grant can be found
 // in the file PATENTS.  All contributing project authors may
 // be found in the AUTHORS file in the root of the source tree.
 //
 // Borrowed from
 // https://code.google.com/p/gperftools/source/browse/src/base/thread_annotations.h
 // but adapted for clang attributes instead of the gcc.
 //
 // This header file contains the macro definitions for thread safety
 // annotations that allow the developers to document the locking policies
 // of their multi-threaded code. The annotations can also help program
 // analysis tools to identify potential thread safety issues.
 
 #ifndef WEBRTC_BASE_THREAD_ANNOTATIONS_H_
 #define WEBRTC_BASE_THREAD_ANNOTATIONS_H_
 
-#if defined(__clang__) && (!defined(SWIG))
-#define THREAD_ANNOTATION_ATTRIBUTE__(x) __attribute__((x))
-#else
-#define THREAD_ANNOTATION_ATTRIBUTE__(x)  // no-op
-#endif
 
-// Document if a shared variable/field needs to be protected by a lock.
-// GUARDED_BY allows the user to specify a particular lock that should be
-// held when accessing the annotated variable, while GUARDED_VAR only
-// indicates a shared variable should be guarded (by any lock). GUARDED_VAR
-// is primarily used when the client cannot express the name of the lock.
-#define GUARDED_BY(x) THREAD_ANNOTATION_ATTRIBUTE__(guarded_by(x))
-#define GUARDED_VAR THREAD_ANNOTATION_ATTRIBUTE__(guarded_var)
-
-// Document if the memory location pointed to by a pointer should be guarded
-// by a lock when dereferencing the pointer. Similar to GUARDED_VAR,
-// PT_GUARDED_VAR is primarily used when the client cannot express the name
-// of the lock. Note that a pointer variable to a shared memory location
-// could itself be a shared variable. For example, if a shared global pointer
-// q, which is guarded by mu1, points to a shared memory location that is
-// guarded by mu2, q should be annotated as follows:
-//     int *q GUARDED_BY(mu1) PT_GUARDED_BY(mu2);
-#define PT_GUARDED_BY(x) THREAD_ANNOTATION_ATTRIBUTE__(pt_guarded_by(x))
-#define PT_GUARDED_VAR THREAD_ANNOTATION_ATTRIBUTE__(pt_guarded_var)
-
-// Document the acquisition order between locks that can be held
-// simultaneously by a thread. For any two locks that need to be annotated
-// to establish an acquisition order, only one of them needs the annotation.
-// (i.e. You don't have to annotate both locks with both ACQUIRED_AFTER
-// and ACQUIRED_BEFORE.)
-#define ACQUIRED_AFTER(x) THREAD_ANNOTATION_ATTRIBUTE__(acquired_after(x))
-#define ACQUIRED_BEFORE(x) THREAD_ANNOTATION_ATTRIBUTE__(acquired_before(x))
-
-// The following three annotations document the lock requirements for
-// functions/methods.
-
-// Document if a function expects certain locks to be held before it is called
-#define EXCLUSIVE_LOCKS_REQUIRED(...) \
-  THREAD_ANNOTATION_ATTRIBUTE__(exclusive_locks_required(__VA_ARGS__))
-
-#define SHARED_LOCKS_REQUIRED(...) \
-  THREAD_ANNOTATION_ATTRIBUTE__(shared_locks_required(__VA_ARGS__))
-
-// Document the locks acquired in the body of the function. These locks
-// cannot be held when calling this function (as google3's Mutex locks are
-// non-reentrant).
-#define LOCKS_EXCLUDED(...) \
-  THREAD_ANNOTATION_ATTRIBUTE__(locks_excluded(__VA_ARGS__))
-
-// Document the lock the annotated function returns without acquiring it.
-#define LOCK_RETURNED(x) THREAD_ANNOTATION_ATTRIBUTE__(lock_returned(x))
-
-// Document if a class/type is a lockable type (such as the Mutex class).
-#define LOCKABLE THREAD_ANNOTATION_ATTRIBUTE__(lockable)
-
-// Document if a class is a scoped lockable type (such as the MutexLock class).
-#define SCOPED_LOCKABLE THREAD_ANNOTATION_ATTRIBUTE__(scoped_lockable)
-
-// The following annotations specify lock and unlock primitives.
-#define EXCLUSIVE_LOCK_FUNCTION(...) \
-  THREAD_ANNOTATION_ATTRIBUTE__(exclusive_lock_function(__VA_ARGS__))
-
-#define SHARED_LOCK_FUNCTION(...) \
-  THREAD_ANNOTATION_ATTRIBUTE__(shared_lock_function(__VA_ARGS__))
-
-#define EXCLUSIVE_TRYLOCK_FUNCTION(...) \
-  THREAD_ANNOTATION_ATTRIBUTE__(exclusive_trylock_function(__VA_ARGS__))
-
-#define SHARED_TRYLOCK_FUNCTION(...) \
-  THREAD_ANNOTATION_ATTRIBUTE__(shared_trylock_function(__VA_ARGS__))
-
-#define UNLOCK_FUNCTION(...) \
-  THREAD_ANNOTATION_ATTRIBUTE__(unlock_function(__VA_ARGS__))
-
-// An escape hatch for thread safety analysis to ignore the annotated function.
-#define NO_THREAD_SAFETY_ANALYSIS \
-  THREAD_ANNOTATION_ATTRIBUTE__(no_thread_safety_analysis)
+// This header is deprecated and is just left here temporarily during
+// refactoring. See https://bugs.webrtc.org/7634 for more details.
+#include "webrtc/rtc_base/thread_annotations.h"
 
 #endif  // WEBRTC_BASE_THREAD_ANNOTATIONS_H_