richgel99@gmail.com
39 lines
1000 B
C++
39 lines
1000 B
C++
// File: crn_spinlock.h
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// See Copyright Notice and license at the end of inc/crnlib.h
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#pragma once
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namespace crnlib
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{
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// Simple non-recursive spinlock.
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class spinlock
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{
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public:
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inline spinlock() : m_flag(0) { }
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void lock(uint32 max_spins = 4096, bool yielding = true, bool memoryBarrier = true);
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inline void lock_no_barrier(uint32 max_spins = 4096, bool yielding = true) { lock(max_spins, yielding, false); }
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void unlock();
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inline void unlock_no_barrier() { m_flag = CRNLIB_FALSE; }
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private:
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volatile int32 m_flag;
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};
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class scoped_spinlock
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{
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scoped_spinlock(const scoped_spinlock&);
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scoped_spinlock& operator= (const scoped_spinlock&);
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public:
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inline scoped_spinlock(spinlock& lock) : m_lock(lock) { m_lock.lock(); }
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inline ~scoped_spinlock() { m_lock.unlock(); }
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private:
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spinlock& m_lock;
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};
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} // namespace crnlib
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