diff options
Diffstat (limited to 'nptl/descr.h')
| -rw-r--r-- | nptl/descr.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/nptl/descr.h b/nptl/descr.h index aaef9bc621..a9f830ef0b 100644 --- a/nptl/descr.h +++ b/nptl/descr.h @@ -134,6 +134,51 @@ struct pthread /* Process ID - thread group ID in kernel speak. */ pid_t pid; + /* List of robust mutexes the thread is holding. */ + pthread_mutex_t *robust_list; + +#ifdef __PTHREAD_MUTEX_HAVE_PREV +# define ENQUEUE_MUTEX(mutex) \ + do { \ + mutex->__data.__next = THREAD_GETMEM (THREAD_SELF, robust_list); \ + THREAD_SETMEM (THREAD_SELF, robust_list, mutex); \ + if (mutex->__data.__next != NULL) \ + mutex->__data.__next->__data.__prev = mutex; \ + mutex->__data.__prev = NULL; \ + } while (0) +# define DEQUEUE_MUTEX(mutex) \ + do { \ + if (mutex->__data.__prev == NULL) \ + THREAD_SETMEM (THREAD_SELF, robust_list, mutex->__data.__next); \ + else \ + mutex->__data.__prev->__data.__next = mutex->__data.__next; \ + if (mutex->__data.__next != NULL) \ + mutex->__data.__next->__data.__prev = mutex->__data.__prev; \ + mutex->__data.__prev = NULL; \ + mutex->__data.__next = NULL; \ + } while (0) +#else +# define ENQUEUE_MUTEX(mutex) \ + do { \ + mutex->__data.__next = THREAD_GETMEM (THREAD_SELF, robust_list); \ + THREAD_SETMEM (THREAD_SELF, robust_list, mutex); \ + } while (0) +# define DEQUEUE_MUTEX(mutex) \ + do { \ + pthread_mutex_t *runp = THREAD_GETMEM (THREAD_SELF, robust_list); \ + if (runp == mutex) \ + THREAD_SETMEM (THREAD_SELF, robust_list, runp->__data.__next); \ + else \ + { \ + while (runp->__data.__next != mutex) \ + runp = runp->__data.__next; \ + \ + runp->__data.__next = runp->__data.__next->__data.__next; \ + mutex->__data.__next = NULL; \ + } \ + } while (0) +#endif + /* List of cleanup buffers. */ struct _pthread_cleanup_buffer *cleanup; |