libc-top-half/musl/src/internal/lock.h

   1 #ifndef LOCK_H
   2 #define LOCK_H
   3
   4 #if defined(__wasilibc_unmodified_upstream) || defined(_REENTRANT)
   5 hidden void __lock(volatile int *);
   6 hidden void __unlock(volatile int *);
   7 #define LOCK(x) __lock(x)
   8 #define UNLOCK(x) __unlock(x)
   9 #else
  10 // No locking needed.
  11 #define LOCK(x) ((void)(x))
  12 #define UNLOCK(x) ((void)(x))
  13 #endif
  14
  15 #endif