github.com/afumu/libc@v0.0.6/musl/src/internal/lock.h (about)

     1  #ifndef LOCK_H
     2  #define LOCK_H
     3  
     4  hidden void __lock(volatile int *);
     5  hidden void __unlock(volatile int *);
     6  #define LOCK(x) __lock(x)
     7  #define UNLOCK(x) __unlock(x)
     8  
     9  #endif