Index: Source/WTF/wtf/ThreadRestrictionVerifier.h |
diff --git a/Source/WTF/wtf/ThreadRestrictionVerifier.h b/Source/WTF/wtf/ThreadRestrictionVerifier.h |
deleted file mode 100644 |
index 9a929febca4c6bb883246f8bf963877f068a3049..0000000000000000000000000000000000000000 |
--- a/Source/WTF/wtf/ThreadRestrictionVerifier.h |
+++ /dev/null |
@@ -1,175 +0,0 @@ |
-/* |
- * Copyright (C) 2011 Google Inc. All rights reserved. |
- * |
- * Redistribution and use in source and binary forms, with or without |
- * modification, are permitted provided that the following conditions are |
- * met: |
- * |
- * * Redistributions of source code must retain the above copyright |
- * notice, this list of conditions and the following disclaimer. |
- * * Redistributions in binary form must reproduce the above |
- * copyright notice, this list of conditions and the following disclaimer |
- * in the documentation and/or other materials provided with the |
- * distribution. |
- * * Neither the name of Google Inc. nor the names of its |
- * contributors may be used to endorse or promote products derived from |
- * this software without specific prior written permission. |
- * |
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
- */ |
- |
-#ifndef ThreadRestrictionVerifier_h |
-#define ThreadRestrictionVerifier_h |
- |
-#include <wtf/Assertions.h> |
-#include <wtf/Threading.h> |
-#include <wtf/ThreadingPrimitives.h> |
- |
-#if HAVE(DISPATCH_H) |
-#include <dispatch/dispatch.h> |
-#endif |
- |
-#ifndef NDEBUG |
- |
-namespace WTF { |
- |
-// Verifies that a class is used in a way that respects its lack of thread-safety. |
-// The default mode is to verify that the object will only be used on a single thread. The |
-// thread gets captured when setShared(true) is called. |
-// The mode may be changed by calling useMutexMode (or turnOffVerification). |
-class ThreadRestrictionVerifier { |
-public: |
- ThreadRestrictionVerifier() |
- : m_mode(SingleThreadVerificationMode) |
- , m_shared(false) |
- , m_owningThread(0) |
- , m_mutex(0) |
-#if HAVE(DISPATCH_H) |
- , m_owningQueue(0) |
-#endif |
- { |
- } |
- |
-#if HAVE(DISPATCH_H) |
- ~ThreadRestrictionVerifier() |
- { |
- if (m_owningQueue) |
- dispatch_release(m_owningQueue); |
- } |
-#endif |
- |
- void setMutexMode(Mutex& mutex) |
- { |
- m_mode = MutexVerificationMode; |
- m_mutex = &mutex; |
- } |
- |
-#if HAVE(DISPATCH_H) |
- void setDispatchQueueMode(dispatch_queue_t queue) |
- { |
- m_mode = SingleDispatchQueueVerificationMode; |
- m_owningQueue = queue; |
- dispatch_retain(m_owningQueue); |
- } |
-#endif |
- |
- void turnOffVerification() |
- { |
- m_mode = NoVerificationMode; |
- } |
- |
- // Indicates that the object may (or may not) be owned by more than one place. |
- void setShared(bool shared) |
- { |
-#if !ASSERT_DISABLED |
- bool previouslyShared = m_shared; |
-#endif |
- m_shared = shared; |
- |
- if (!m_shared) |
- return; |
- |
- switch (m_mode) { |
- case SingleThreadVerificationMode: |
- ASSERT(shared != previouslyShared); |
- // Capture the current thread to verify that subsequent ref/deref happen on this thread. |
- m_owningThread = currentThread(); |
- return; |
- |
-#if HAVE(DISPATCH_H) |
- case SingleDispatchQueueVerificationMode: |
-#endif |
- case MutexVerificationMode: |
- case NoVerificationMode: |
- return; |
- } |
- ASSERT_NOT_REACHED(); |
- } |
- |
- // Is it OK to use the object at this moment on the current thread? |
- bool isSafeToUse() const |
- { |
- if (!m_shared) |
- return true; |
- |
- switch (m_mode) { |
- case SingleThreadVerificationMode: |
- return m_owningThread == currentThread(); |
- |
- case MutexVerificationMode: |
- if (!m_mutex->tryLock()) |
- return true; |
- m_mutex->unlock(); |
- return false; |
- |
-#if HAVE(DISPATCH_H) |
- case SingleDispatchQueueVerificationMode: |
- return m_owningQueue == dispatch_get_current_queue(); |
-#endif |
- |
- case NoVerificationMode: |
- return true; |
- } |
- ASSERT_NOT_REACHED(); |
- return true; |
- } |
- |
-private: |
- enum VerificationMode { |
- SingleThreadVerificationMode, |
- MutexVerificationMode, |
- NoVerificationMode, |
-#if HAVE(DISPATCH_H) |
- SingleDispatchQueueVerificationMode, |
-#endif |
- }; |
- |
- VerificationMode m_mode; |
- bool m_shared; |
- |
- // Used by SingleThreadVerificationMode |
- ThreadIdentifier m_owningThread; |
- |
- // Used by MutexVerificationMode. |
- Mutex* m_mutex; |
- |
-#if HAVE(DISPATCH_H) |
- // Used by SingleDispatchQueueVerificationMode. |
- dispatch_queue_t m_owningQueue; |
-#endif |
-}; |
- |
-} |
- |
-#endif |
-#endif |