zircon/third_party/ulib/musl/src/stdio/flockfile.c

#include "futex_impl.h"
#include "stdio_impl.h"

void flockfile(FILE* f) {
  while (ftrylockfile(f)) {
    int owner = f->lock;
    if (owner)
      __wait(&f->lock, &f->waiters, owner);
  }
}