diff options
Diffstat (limited to 'activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb')
| -rw-r--r-- | activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb b/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb index c11b7b012f..0759f4d2b3 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb @@ -270,7 +270,7 @@ module ActiveRecord # Connections must be leased while holding the main pool mutex. This is # an internal subclass that also +.leases+ returned connections while # still in queue's critical section (queue synchronizes with the same - # +@lock+ as the main pool) so that a returned connection is already + # <tt>@lock</tt> as the main pool) so that a returned connection is already # leased and there is no need to re-enter synchronized block. class ConnectionLeasingQueue < Queue # :nodoc: include BiasableQueue @@ -326,8 +326,6 @@ module ActiveRecord @spec = spec @checkout_timeout = (spec.config[:checkout_timeout] && spec.config[:checkout_timeout].to_f) || 5 - @reaper = Reaper.new(self, (spec.config[:reaping_frequency] && spec.config[:reaping_frequency].to_f)) - @reaper.run # default max pool size to 5 @size = (spec.config[:pool] && spec.config[:pool].to_i) || 5 @@ -340,7 +338,7 @@ module ActiveRecord # then that +thread+ does indeed own that +conn+. However, an absence of a such # mapping does not mean that the +thread+ doesn't own the said connection. In # that case +conn.owner+ attr should be consulted. - # Access and modification of +@thread_cached_conns+ does not require + # Access and modification of <tt>@thread_cached_conns</tt> does not require # synchronization. @thread_cached_conns = Concurrent::Map.new(initial_capacity: @size) @@ -357,6 +355,9 @@ module ActiveRecord @available = ConnectionLeasingQueue.new self @lock_thread = false + + @reaper = Reaper.new(self, spec.config[:reaping_frequency] && spec.config[:reaping_frequency].to_f) + @reaper.run end def lock_thread=(lock_thread) @@ -736,10 +737,10 @@ module ActiveRecord # Implementation detail: the connection returned by +acquire_connection+ # will already be "+connection.lease+ -ed" to the current thread. def acquire_connection(checkout_timeout) - # NOTE: we rely on +@available.poll+ and +try_to_checkout_new_connection+ to + # NOTE: we rely on <tt>@available.poll</tt> and +try_to_checkout_new_connection+ to # +conn.lease+ the returned connection (and to do this in a +synchronized+ # section). This is not the cleanest implementation, as ideally we would - # <tt>synchronize { conn.lease }</tt> in this method, but by leaving it to +@available.poll+ + # <tt>synchronize { conn.lease }</tt> in this method, but by leaving it to <tt>@available.poll</tt> # and +try_to_checkout_new_connection+ we can piggyback on +synchronize+ sections # of the said methods and avoid an additional +synchronize+ overhead. if conn = @available.poll || try_to_checkout_new_connection @@ -763,7 +764,7 @@ module ActiveRecord end end - # If the pool is not at a +@size+ limit, establish new connection. Connecting + # If the pool is not at a <tt>@size</tt> limit, establish new connection. Connecting # to the DB is done outside main synchronized section. #-- # Implementation constraint: a newly established connection returned by this |