diff options
author | Sven Gothel <[email protected]> | 2014-06-19 17:03:28 +0200 |
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committer | Sven Gothel <[email protected]> | 2014-06-19 17:03:28 +0200 |
commit | d9a584844a60542519d813b5dc1a62428f14a0ae (patch) | |
tree | 942c10a5ebcd0aab65e9d6facb59778468f39d3b /LibOVR/Src/Kernel/OVR_RefCount.cpp |
Add OculusSDK 0.3.2 Linux Source Code w/o Samples, docs or binaries (libs or tools)
Diffstat (limited to 'LibOVR/Src/Kernel/OVR_RefCount.cpp')
-rw-r--r-- | LibOVR/Src/Kernel/OVR_RefCount.cpp | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/LibOVR/Src/Kernel/OVR_RefCount.cpp b/LibOVR/Src/Kernel/OVR_RefCount.cpp new file mode 100644 index 0000000..c6301ed --- /dev/null +++ b/LibOVR/Src/Kernel/OVR_RefCount.cpp @@ -0,0 +1,111 @@ +/************************************************************************************ + +Filename : OVR_RefCount.cpp +Content : Reference counting implementation +Created : September 19, 2012 +Notes : + +Copyright : Copyright 2014 Oculus VR, Inc. All Rights reserved. + +Licensed under the Oculus VR Rift SDK License Version 3.1 (the "License"); +you may not use the Oculus VR Rift SDK except in compliance with the License, +which is provided at the time of installation or download, or which +otherwise accompanies this software in either electronic or hard copy form. + +You may obtain a copy of the License at + +http://www.oculusvr.com/licenses/LICENSE-3.1 + +Unless required by applicable law or agreed to in writing, the Oculus VR SDK +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. + +************************************************************************************/ + +#include "OVR_RefCount.h" +#include "OVR_Atomic.h" +#include "OVR_Log.h" + +namespace OVR { + +#ifdef OVR_CC_ARM +void* ReturnArg0(void* p) +{ + return p; +} +#endif + +// ***** Reference Count Base implementation + +RefCountImplCore::~RefCountImplCore() +{ + // RefCount can be either 1 or 0 here. + // 0 if Release() was properly called. + // 1 if the object was declared on stack or as an aggregate. + OVR_ASSERT(RefCount <= 1); +} + +#ifdef OVR_BUILD_DEBUG +void RefCountImplCore::reportInvalidDelete(void *pmem) +{ + OVR_DEBUG_LOG( + ("Invalid delete call on ref-counted object at %p. Please use Release()", pmem)); + OVR_ASSERT(0); +} +#endif + +RefCountNTSImplCore::~RefCountNTSImplCore() +{ + // RefCount can be either 1 or 0 here. + // 0 if Release() was properly called. + // 1 if the object was declared on stack or as an aggregate. + OVR_ASSERT(RefCount <= 1); +} + +#ifdef OVR_BUILD_DEBUG +void RefCountNTSImplCore::reportInvalidDelete(void *pmem) +{ + OVR_DEBUG_LOG( + ("Invalid delete call on ref-counted object at %p. Please use Release()", pmem)); + OVR_ASSERT(0); +} +#endif + + +// *** Thread-Safe RefCountImpl + +void RefCountImpl::AddRef() +{ + AtomicOps<int>::ExchangeAdd_NoSync(&RefCount, 1); +} +void RefCountImpl::Release() +{ + if ((AtomicOps<int>::ExchangeAdd_NoSync(&RefCount, -1) - 1) == 0) + delete this; +} + +// *** Thread-Safe RefCountVImpl w/virtual AddRef/Release + +void RefCountVImpl::AddRef() +{ + AtomicOps<int>::ExchangeAdd_NoSync(&RefCount, 1); +} +void RefCountVImpl::Release() +{ + if ((AtomicOps<int>::ExchangeAdd_NoSync(&RefCount, -1) - 1) == 0) + delete this; +} + +// *** NON-Thread-Safe RefCountImpl + +void RefCountNTSImpl::Release() const +{ + RefCount--; + if (RefCount == 0) + delete this; +} + + +} // OVR |