KiCad PCB EDA Suite
spinlock.h
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19 
20 #ifndef __KICAD_SPINLOCK_H
21 #define __KICAD_SPINLOCK_H
22 
23 #include <atomic>
24 
25 
30 {
31 public:
33  m_lock( false )
34  {}
35 
36  void lock()
37  {
38  while( m_lock.exchange( true, std::memory_order_acquire ) );
39  }
40 
41  bool try_lock()
42  {
43  return !m_lock.exchange( true, std::memory_order_acquire );
44  }
45 
46  void unlock()
47  {
48  m_lock.store( false, std::memory_order_release );
49  }
50 
51  bool test()
52  {
53  return m_lock.load( std::memory_order_acquire );
54  }
55 
56 private:
57  std::atomic<bool> m_lock;
58 };
59 
60 #endif
std::atomic< bool > m_lock
Definition: spinlock.h:57
void lock()
Definition: spinlock.h:36
bool try_lock()
Definition: spinlock.h:41
void unlock()
Definition: spinlock.h:46
A trivial spinlock implementation with no optimization.
Definition: spinlock.h:29
bool test()
Definition: spinlock.h:51
KISPINLOCK()
Definition: spinlock.h:32