Factor out _dl_clear_dtv.
2013-12-18 Andrew Hunter <ahh@google.com>
* elf/Versions (ld): Add _dl_clear_dtv.
* sysdeps/generic/ldsodefs.h (_dl_clear_dtv): New prototype.
* elf/dl-tls.c (_dl_clear_dtv): New function.
* nptl/allocatestack.c (get_cached_stack): Call _dl_clear_dtv.
+2013-12-18 Andrew Hunter <ahh@google.com>
+
+ * elf/Versions (ld): Add _dl_clear_dtv.
+ * sysdeps/generic/ldsodefs.h (_dl_clear_dtv): New prototype.
+ * elf/dl-tls.c (_dl_clear_dtv): New function.
+ * nptl/allocatestack.c (get_cached_stack): Call _dl_clear_dtv.
+
2013-12-18 Andrew Hunter <ahh@google.com>
* sysdeps/generic/ldsodefs.h (_dl_mask_all_signals): New prototype.
_dl_allocate_tls; _dl_allocate_tls_init;
_dl_argv; _dl_find_dso_for_object; _dl_get_tls_static_info;
_dl_deallocate_tls; _dl_make_stack_executable; _dl_out_of_memory;
+ _dl_clear_dtv;
_dl_rtld_di_serinfo; _dl_starting_up; _dl_tls_setup;
_rtld_global; _rtld_global_ro;
}
rtld_hidden_def (_dl_allocate_tls)
+void
+internal_function
+_dl_clear_dtv (dtv_t *dtv)
+{
+ for (size_t cnt = 0; cnt < dtv[-1].counter; ++cnt)
+ if (! dtv[1 + cnt].pointer.is_static
+ && dtv[1 + cnt].pointer.val != TLS_DTV_UNALLOCATED)
+ free (dtv[1 + cnt].pointer.val);
+ memset (dtv, '\0', (dtv[-1].counter + 1) * sizeof (dtv_t));
+}
+
+rtld_hidden_def (_dl_clear_dtv)
#ifndef SHARED
extern dtv_t _dl_static_dtv[];
/* Clear the DTV. */
dtv_t *dtv = GET_DTV (TLS_TPADJ (result));
- for (size_t cnt = 0; cnt < dtv[-1].counter; ++cnt)
- if (! dtv[1 + cnt].pointer.is_static
- && dtv[1 + cnt].pointer.val != TLS_DTV_UNALLOCATED)
- free (dtv[1 + cnt].pointer.val);
- memset (dtv, '\0', (dtv[-1].counter + 1) * sizeof (dtv_t));
+ _dl_clear_dtv (dtv);
/* Re-initialize the TLS. */
_dl_allocate_tls_init (TLS_TPADJ (result));
extern void *_dl_allocate_tls_init (void *) internal_function;
rtld_hidden_proto (_dl_allocate_tls_init)
+/* Remove all allocated dynamic TLS regions from a DTV
+ for reuse by new thread. */
+extern void _dl_clear_dtv (dtv_t *dtv) internal_function;
+rtld_hidden_proto (_dl_clear_dtv)
+
/* Deallocate memory allocated with _dl_allocate_tls. */
extern void _dl_deallocate_tls (void *tcb, bool dealloc_tcb) internal_function;
rtld_hidden_proto (_dl_deallocate_tls)