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author | Jonathan Wakely <jwakely@redhat.com> | 2018-11-13 22:57:53 +0000 |
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committer | Jonathan Wakely <redi@gcc.gnu.org> | 2018-11-13 22:57:53 +0000 |
commit | f2e005857e52ded5338e1179c0bb0fe3375cea71 (patch) | |
tree | 7215d345c266d8938cae0627f3d5592b824785d4 /libstdc++-v3/Makefile.in | |
parent | d3306a84a6cc954ff9d28d8a915a891fe15270f5 (diff) | |
download | gcc-f2e005857e52ded5338e1179c0bb0fe3375cea71.zip gcc-f2e005857e52ded5338e1179c0bb0fe3375cea71.tar.gz gcc-f2e005857e52ded5338e1179c0bb0fe3375cea71.tar.bz2 |
Improve handling of pool_options::largest_required_pool_block
Make the munge_options function round the largest_required_pool_block
value to a multiple of the smallest pool size (currently 8 bytes) to
avoid pools with odd sizes.
Ensure there is a pool large enough for blocks of the requested size.
Previously when largest_required_pool_block was exactly equal to one of
the pool_sizes[] values there would be no pool of that size. This patch
increases _M_npools by one, so there is a pool at least as large as the
requested value. It also reduces the size of the largest pool to be no
larger than needed.
* src/c++17/memory_resource.cc (munge_options): Round up value of
largest_required_pool_block to multiple of smallest pool size. Round
excessively large values down to largest pool size.
(select_num_pools): Increase number of pools by one unless it exactly
matches requested largest_required_pool_block.
(__pool_resource::_M_alloc_pools()): Make largest pool size equal
largest_required_pool_block.
* testsuite/20_util/unsynchronized_pool_resource/options.cc: Check
that pool_options::largest_required_pool_block is set appropriately.
From-SVN: r266089
Diffstat (limited to 'libstdc++-v3/Makefile.in')
0 files changed, 0 insertions, 0 deletions