1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/camera/AutoRwLock.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,49 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.6 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#ifndef RWLOCK_AUTO_ENTER_H
1.9 +#define RWLOCK_AUTO_ENTER_H
1.10 +
1.11 +#include "prrwlock.h"
1.12 +#include "mozilla/Assertions.h"
1.13 +
1.14 +class RwLockAutoEnterRead
1.15 +{
1.16 +public:
1.17 + RwLockAutoEnterRead(PRRWLock* aRwLock)
1.18 + : mRwLock(aRwLock)
1.19 + {
1.20 + MOZ_ASSERT(mRwLock);
1.21 + PR_RWLock_Rlock(mRwLock);
1.22 + }
1.23 +
1.24 + ~RwLockAutoEnterRead()
1.25 + {
1.26 + PR_RWLock_Unlock(mRwLock);
1.27 + }
1.28 +
1.29 +protected:
1.30 + PRRWLock* mRwLock;
1.31 +};
1.32 +
1.33 +class RwLockAutoEnterWrite
1.34 +{
1.35 +public:
1.36 + RwLockAutoEnterWrite(PRRWLock* aRwLock)
1.37 + : mRwLock(aRwLock)
1.38 + {
1.39 + MOZ_ASSERT(mRwLock);
1.40 + PR_RWLock_Wlock(mRwLock);
1.41 + }
1.42 +
1.43 + ~RwLockAutoEnterWrite()
1.44 + {
1.45 + PR_RWLock_Unlock(mRwLock);
1.46 + }
1.47 +
1.48 +protected:
1.49 + PRRWLock* mRwLock;
1.50 +};
1.51 +
1.52 +#endif // RWLOCK_AUTO_ENTER_H
