test/ruby/test_io.rb (test_select_leak): speedup and reduce memory use

We can reuse the sub-thread and exception with Thread#raise to
reproduce the old memory leak with less overhead.  This allows
us to to run more iterations and improve reliability of the
actual test, particularly on platforms without USE_THREAD_CACHE.

For glibc and jemalloc, also limit arena count to avoid
inadvertant growth.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64187 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

0 files changed, 0 insertions, 0 deletions