diff options
Diffstat (limited to 'nptl/init.c')
| -rw-r--r-- | nptl/init.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/nptl/init.c b/nptl/init.c index cb63ff7a6d..4db3e0c828 100644 --- a/nptl/init.c +++ b/nptl/init.c @@ -60,6 +60,15 @@ size_t __static_tls_size; size_t __static_tls_align_m1; +#ifndef __ASSUME_SET_ROBUST_LIST +/* Negative if we do not have the system call and we can use it. */ +int __set_robust_list_avail; +# define set_robust_list_not_avail() \ + __set_robust_list_avail = -1 +#else +# define set_robust_list_not_avail() do { } while (0) +#endif + /* Version of the library, used in libthread_db to detect mismatches. */ static const char nptl_version[] __attribute_used__ = VERSION; @@ -247,10 +256,6 @@ __pthread_initialize_minimal_internal (void) struct pthread *pd = THREAD_SELF; INTERNAL_SYSCALL_DECL (err); pd->pid = pd->tid = INTERNAL_SYSCALL (set_tid_address, err, 1, &pd->tid); -#ifdef __PTHREAD_MUTEX_HAVE_PREV - pd->robust_list.__prev = &pd->robust_list; -#endif - pd->robust_list.__next = &pd->robust_list; THREAD_SETMEM (pd, specific[0], &pd->specific_1stblock[0]); THREAD_SETMEM (pd, user_stack, true); if (LLL_LOCK_INITIALIZER != 0) @@ -259,6 +264,21 @@ __pthread_initialize_minimal_internal (void) THREAD_SETMEM (pd, cpuclock_offset, GL(dl_cpuclock_offset)); #endif + /* Initialize the robust mutex data. */ +#ifdef __PTHREAD_MUTEX_HAVE_PREV + pd->robust_prev = &pd->robust_head; +#endif + pd->robust_head.list = &pd->robust_head; +#ifdef __NR_set_robust_list + pd->robust_head.futex_offset = (offsetof (pthread_mutex_t, __data.__lock) + - offsetof (pthread_mutex_t, + __data.__list.__next)); + int res = INTERNAL_SYSCALL (set_robust_list, err, 2, &pd->robust_head, + sizeof (struct robust_list_head)); + if (INTERNAL_SYSCALL_ERROR_P (res, err)) +#endif + set_robust_list_not_avail (); + /* Set initial thread's stack block from 0 up to __libc_stack_end. It will be bigger than it actually is, but for unwind.c/pt-longjmp.c purposes this is good enough. */ |