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#ifndef foosydneyoncehfoo
#define foosydneyoncehfoo
#include "mutex.h"
typedef struct sa_once {
unsigned int once_value;
sa_mutex_t *mutex;
} sa_once_t;
#define SA_ONCE_INIT { .once_value = 0, .mutex = NULL }
typedef void (*sa_once_func_t) (void);
int sa_once(sa_once_t *o, sa_once_func_t f);
#endif
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