92 lines
1.5 KiB
C++
92 lines
1.5 KiB
C++
// This file implements some useful thread local template data structures
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#ifndef BASE_THREAD_THREAD_LOCAL_H_
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#define BASE_THREAD_THREAD_LOCAL_H_
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#include "base/base_config.h"
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#if defined(OS_POSIX)
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#include <pthread.h>
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#endif
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#include "base/macros.h"
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namespace nbase
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{
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namespace internal
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{
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struct ThreadLocalPlatform
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{
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#if defined(OS_WIN)
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typedef unsigned long SlotType;
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#elif defined(OS_POSIX)
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typedef pthread_key_t SlotType;
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#endif
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static void AllocateSlot(SlotType &slot);
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static void FreeSlot(SlotType &slot);
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static void* GetValueFromSlot(SlotType &slot);
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static void SetValueInSlot(SlotType &slot, void *value);
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};
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} // namespace internal
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template<typename Type>
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class ThreadLocalPointer
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{
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public:
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ThreadLocalPointer() : slot_()
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{
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internal::ThreadLocalPlatform::AllocateSlot(slot_);
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}
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~ThreadLocalPointer()
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{
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internal::ThreadLocalPlatform::FreeSlot(slot_);
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}
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Type* Get()
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{
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return static_cast<Type*>(internal::ThreadLocalPlatform::GetValueFromSlot(slot_));
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}
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void Set(Type *ptr)
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{
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internal::ThreadLocalPlatform::SetValueInSlot(slot_, ptr);
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}
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private:
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typedef internal::ThreadLocalPlatform::SlotType SlotType;
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SlotType slot_;
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DISALLOW_COPY_AND_ASSIGN(ThreadLocalPointer);
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};
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class ThreadLocalBoolean
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{
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public:
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ThreadLocalBoolean() {}
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~ThreadLocalBoolean() {}
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bool Get()
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{
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return !!tlp_.Get();
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}
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void Set(bool val)
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{
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tlp_.Set(reinterpret_cast<void*>(val ? 1 : 0));
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}
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private:
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ThreadLocalPointer<void> tlp_;
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DISALLOW_COPY_AND_ASSIGN(ThreadLocalBoolean);
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};
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} // namespace nbase
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#endif // BASE_THREAD_THREAD_LOCAL_H_
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