diff options
Diffstat (limited to 'ovr_sdk_win_23.0.0/LibOVRKernel/Src/Kernel/OVR_RefCount.cpp')
-rw-r--r-- | ovr_sdk_win_23.0.0/LibOVRKernel/Src/Kernel/OVR_RefCount.cpp | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/ovr_sdk_win_23.0.0/LibOVRKernel/Src/Kernel/OVR_RefCount.cpp b/ovr_sdk_win_23.0.0/LibOVRKernel/Src/Kernel/OVR_RefCount.cpp new file mode 100644 index 0000000..e319063 --- /dev/null +++ b/ovr_sdk_win_23.0.0/LibOVRKernel/Src/Kernel/OVR_RefCount.cpp @@ -0,0 +1,90 @@ +/************************************************************************************ + +Filename : OVR_RefCount.cpp +Content : Reference counting implementation +Created : September 19, 2012 +Notes : + +Copyright : Copyright (c) Facebook Technologies, LLC and its affiliates. All rights reserved. + +Licensed under the Oculus Master SDK License Version 1.0 (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 + +https://developer.oculus.com/licenses/oculusmastersdk-1.0 + +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" + +namespace OVR { + +// ***** 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*/) { + // Invalid delete call on ref-counted object. Please use Release() + OVR_FAIL(); +} +#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*/) { + // Invalid delete call on ref-counted object. Please use Release() + OVR_FAIL(); +} +#endif + +// *** Thread-Safe RefCountImpl + +void RefCountImpl::AddRef() { + RefCount.fetch_add(1, std::memory_order_relaxed); +} +void RefCountImpl::Release() { + if (RefCount.fetch_add(-1, std::memory_order_relaxed) - 1 == 0) + delete this; +} + +// *** Thread-Safe RefCountVImpl w/virtual AddRef/Release + +void RefCountVImpl::AddRef() { + RefCount.fetch_add(1, std::memory_order_relaxed); +} +void RefCountVImpl::Release() { + if (RefCount.fetch_add(-1, std::memory_order_relaxed) - 1 == 0) + delete this; +} + +// *** NON-Thread-Safe RefCountImpl + +void RefCountNTSImpl::Release() const { + RefCount--; + if (RefCount == 0) + delete this; +} + +} // namespace OVR |