diff options
Diffstat (limited to 'src/stdio/ftrylockfile.c')
| -rw-r--r-- | src/stdio/ftrylockfile.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/src/stdio/ftrylockfile.c b/src/stdio/ftrylockfile.c index 56cccafd..6f9a4b88 100644 --- a/src/stdio/ftrylockfile.c +++ b/src/stdio/ftrylockfile.c @@ -2,9 +2,26 @@ #include "pthread_impl.h" #include <limits.h> +void __do_orphaned_stdio_locks() +{ + FILE *f; + for (f=__pthread_self()->stdio_locks; f; f=f->next_locked) + a_store(&f->lock, 0x40000000); +} + +void __unlist_locked_file(FILE *f) +{ + if (f->lockcount) { + if (f->next_locked) f->next_locked->prev_locked = f->prev_locked; + if (f->prev_locked) f->prev_locked->next_locked = f->next_locked; + else __pthread_self()->stdio_locks = f->next_locked; + } +} + int ftrylockfile(FILE *f) { - int tid = __pthread_self()->tid; + pthread_t self = __pthread_self(); + int tid = self->tid; if (f->lock == tid) { if (f->lockcount == LONG_MAX) return -1; @@ -15,5 +32,8 @@ int ftrylockfile(FILE *f) if (f->lock || a_cas(&f->lock, 0, tid)) return -1; f->lockcount = 1; + f->prev_locked = 0; + f->next_locked = self->stdio_locks; + self->stdio_locks = f; return 0; } |