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| author | François Dumont <fdumont@gcc.gnu.org> | 2020-02-29 18:22:55 +0100 |
|---|---|---|
| committer | François Dumont <fdumont@gcc.gnu.org> | 2020-05-10 23:01:41 +0200 |
| commit | 0b83c4fabb899fdbb3ae60ed75b7004b7859fae9 (patch) | |
| tree | caa0c24850710ec8e67b8088d17a1ab7b147d179 /gcc | |
| parent | 92ed82367e7ccf5e031e9cb7c653c14a2d64ca89 (diff) | |
| download | gcc-0b83c4fabb899fdbb3ae60ed75b7004b7859fae9.zip gcc-0b83c4fabb899fdbb3ae60ed75b7004b7859fae9.tar.gz gcc-0b83c4fabb899fdbb3ae60ed75b7004b7859fae9.tar.bz2 | |
libstdc++ Enhance thread safety of debug mode iterators
Avoids race condition when checking for an iterator to be singular or
to be comparable to another iterator.
* src/c++/debug.cc
(_Safe_sequence_base::_M_attach_single): Set attached iterator
sequence pointer and version.
(_Safe_sequence_base::_M_detach_single): Reset detached iterator.
(_Safe_iterator_base::_M_attach): Remove attached iterator sequence
pointer and version asignments.
(_Safe_iterator_base::_M_attach_single): Likewise.
(_Safe_iterator_base::_M_detach_single): Remove detached iterator
reset.
(_Safe_iterator_base::_M_singular): Use atomic load to access parent
sequence.
(_Safe_iterator_base::_M_can_compare): Likewise.
(_Safe_iterator_base::_M_get_mutex): Likewise.
(_Safe_local_iterator_base::_M_attach): Remove attached iterator container
pointer and version assignments.
(_Safe_local_iterator_base::_M_attach_single): Likewise.
(_Safe_unordered_container_base::_M_attach_local_single):
Set attached iterator container pointer and version.
(_Safe_unordered_container_base::_M_detach_local_single): Reset detached
iterator.
Diffstat (limited to 'gcc')
0 files changed, 0 insertions, 0 deletions