diff options
Diffstat (limited to 'src/stdio/flockfile.c')
-rw-r--r-- | src/stdio/flockfile.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/src/stdio/flockfile.c b/src/stdio/flockfile.c index 6b574cf0..6806cf8b 100644 --- a/src/stdio/flockfile.c +++ b/src/stdio/flockfile.c @@ -1,14 +1,11 @@ #include "stdio_impl.h" #include "pthread_impl.h" -#define MAYBE_WAITERS 0x40000000 +void __register_locked_file(FILE *, pthread_t); void flockfile(FILE *f) { - while (ftrylockfile(f)) { - int owner = f->lock; - if (!owner) continue; - a_cas(&f->lock, owner, owner|MAYBE_WAITERS); - __futexwait(&f->lock, owner|MAYBE_WAITERS, 1); - } + if (!ftrylockfile(f)) return; + __lockfile(f); + __register_locked_file(f, __pthread_self()); } |