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| author | Paul Pluzhnikov <ppluzhnikov@google.com> | 2013-12-18 16:24:19 -0800 |
|---|---|---|
| committer | Paul Pluzhnikov <ppluzhnikov@google.com> | 2013-12-18 16:24:19 -0800 |
| commit | 35e8f7ab94c910659de9d507aa0f3e1f8973d914 (patch) | |
| tree | fca3c69ec2085dbeee15673472350c9067ddf4f7 /nptl/allocatestack.c | |
| parent | 69a17d9d245dc3551792e95e1823cc2d877592f3 (diff) | |
| download | glibc-35e8f7ab94c910659de9d507aa0f3e1f8973d914.tar.gz | |
Patch 3/4 of the effort to make TLS access async-signal-safe.
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.
Diffstat (limited to 'nptl/allocatestack.c')
| -rw-r--r-- | nptl/allocatestack.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c index 1e0fe1f18d..96e3845088 100644 --- a/nptl/allocatestack.c +++ b/nptl/allocatestack.c @@ -242,11 +242,7 @@ get_cached_stack (size_t *sizep, void **memp) /* 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)); |