Revision 99a0949b qemu-lock.h
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#include <pthread.h> |
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#define spin_lock pthread_mutex_lock |
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#define spin_unlock pthread_mutex_unlock |
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#define spinlock_t pthread_mutex_t
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#define a_spinlock pthread_mutex_t
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#define SPIN_LOCK_UNLOCKED PTHREAD_MUTEX_INITIALIZER |
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#else |
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#if defined(__hppa__) |
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typedef int spinlock_t[4];
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typedef int a_spinlock[4];
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#define SPIN_LOCK_UNLOCKED { 1, 1, 1, 1 }
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static inline void resetlock (spinlock_t *p)
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static inline void resetlock (a_spinlock *p)
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{
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(*p)[0] = (*p)[1] = (*p)[2] = (*p)[3] = 1; |
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} |
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#else |
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typedef int spinlock_t;
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typedef int a_spinlock;
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#define SPIN_LOCK_UNLOCKED 0 |
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static inline void resetlock (spinlock_t *p)
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static inline void resetlock (a_spinlock *p)
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{
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*p = SPIN_LOCK_UNLOCKED; |
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} |
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return (void *)a; |
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} |
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static inline int testandset (spinlock_t *p)
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static inline int testandset (a_spinlock *p)
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{
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unsigned int ret; |
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p = ldcw_align(p); |
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#endif |
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#if defined(CONFIG_USER_ONLY) |
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static inline void spin_lock(spinlock_t *lock)
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static inline void spin_lock(a_spinlock *lock)
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{
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while (testandset(lock)); |
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} |
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static inline void spin_unlock(spinlock_t *lock)
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static inline void spin_unlock(a_spinlock *lock)
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{
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resetlock(lock); |
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} |
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static inline int spin_trylock(spinlock_t *lock)
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static inline int spin_trylock(a_spinlock *lock)
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{
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return !testandset(lock); |
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} |
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#else |
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static inline void spin_lock(spinlock_t *lock)
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static inline void spin_lock(a_spinlock *lock)
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{
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} |
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static inline void spin_unlock(spinlock_t *lock)
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static inline void spin_unlock(a_spinlock *lock)
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{
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} |
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static inline int spin_trylock(spinlock_t *lock)
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static inline int spin_trylock(a_spinlock *lock)
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{
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return 1; |
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} |
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