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author | Jamis Buck <jamis@37signals.com> | 2011-01-19 10:27:53 -0700 |
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committer | Jamis Buck <jamis@37signals.com> | 2011-01-19 10:57:30 -0700 |
commit | 16a23a184e8b091392c0b6001a025bee8323ec8e (patch) | |
tree | 63919d866b0702d8446a74db9f2b0fb4110a69a7 /activesupport/lib/active_support/testing/garbage_collection.rb | |
parent | 79a06225ef0e148eb5da541711f74163b5efb18d (diff) | |
download | rails-16a23a184e8b091392c0b6001a025bee8323ec8e.tar.gz rails-16a23a184e8b091392c0b6001a025bee8323ec8e.tar.bz2 rails-16a23a184e8b091392c0b6001a025bee8323ec8e.zip |
rein in GC during tests by making them run (at most) once per second
this can provide a significant performance boost during testing, by
preventing the GC from running too frequently.
Diffstat (limited to 'activesupport/lib/active_support/testing/garbage_collection.rb')
-rw-r--r-- | activesupport/lib/active_support/testing/garbage_collection.rb | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/testing/garbage_collection.rb b/activesupport/lib/active_support/testing/garbage_collection.rb index 7bf9fbafa6..23ac745c3e 100644 --- a/activesupport/lib/active_support/testing/garbage_collection.rb +++ b/activesupport/lib/active_support/testing/garbage_collection.rb @@ -3,6 +3,9 @@ module ActiveSupport module GarbageCollection def self.included(base) base.teardown :scrub_leftover_instance_variables + + base.setup :begin_gc_deferment + base.teardown :reconsider_gc_deferment end private @@ -14,6 +17,27 @@ module ActiveSupport remove_instance_variable(var) end end + + # Minimum interval, in seconds, at which to run GC. Might be less + # frequently than this, if a single test takes longer than this to + # run. + DEFERRED_GC_THRESHOLD = (ENV['DEFERRED_GC_THRESHOLD'] || 1.0).to_f + + @@last_gc_run = Time.now + + def begin_gc_deferment + GC.disable if DEFERRED_GC_THRESHOLD > 0 + end + + def reconsider_gc_deferment + if DEFERRED_GC_THRESHOLD > 0 && Time.now - @@last_gc_run >= DEFERRED_GC_THRESHOLD + GC.enable + GC.start + GC.disable + + @@last_gc_run = Time.now + end + end end end end |