From 35e8f7ab94c910659de9d507aa0f3e1f8973d914 Mon Sep 17 00:00:00 2001 From: Paul Pluzhnikov Date: Wed, 18 Dec 2013 16:24:19 -0800 Subject: Patch 3/4 of the effort to make TLS access async-signal-safe. Factor out _dl_clear_dtv. 2013-12-18 Andrew Hunter * 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. --- sysdeps/generic/ldsodefs.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'sysdeps') diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h index e919e4136c..1bda60c6fa 100644 --- a/sysdeps/generic/ldsodefs.h +++ b/sysdeps/generic/ldsodefs.h @@ -989,6 +989,11 @@ extern void *_dl_allocate_tls_storage (void) 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) -- cgit 1.4.1