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@@ -57,7 +57,7 @@ class Application
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       # If this error was reported before, then the cache might be out of
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       # date because the Rails version may have been installed now.
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       # So we reload the RubyGems cache and try again.
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-			Gem.refresh_all_caches!
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+			Gem.clear_paths
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       found_version = Gem.cache.search('rails', gem_version_spec).map do |x|
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         x.version.version
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       end.sort.last

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@@ -253,10 +253,6 @@ private
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   end
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   def handle_spawn_application(app_root, lower_privilege, lowest_user)
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-		if @refresh_gems_cache
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-			Gem.refresh_all_caches!
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-			@refresh_gems_cache = false
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-		end
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     lower_privilege = lower_privilege == "true"
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     @spawners_lock.synchronize do
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       spawner = @spawners[app_root]
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@@ -270,10 +266,9 @@ private
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           if e.child_exception.is_a?(LoadError)
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             # A source file failed to load, maybe because of a
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             # missing gem. If that's the case then the sysadmin
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-						# will install probably the gem. So next time an app
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-						# is launched, we'll refresh the RubyGems cache so
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-						# that we can detect new gems.
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-						@refresh_gems_cache = true
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+						# will install probably the gem. So we clear RubyGems's
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+						# cache so that it can detect new gems.
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+						Gem.clear_paths
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           end
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           return
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         end

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@@ -157,10 +157,6 @@ private
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   def handle_spawn_application(app_root, lower_privilege, lowest_user)
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     lower_privilege = lower_privilege == "true"
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     app = nil
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-		if @refresh_gems_cache
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-			Gem.refresh_all_caches!
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-			@refresh_gems_cache = false
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-		end
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     begin
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       app = spawn_application(app_root, lower_privilege, lowest_user)
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     rescue ArgumentError => e
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@@ -178,10 +174,9 @@ private
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          (e.child_exception.is_a?(UnknownError) && e.child_exception.real_class_name == "MissingSourceFile")
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         # A source file failed to load, maybe because of a
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         # missing gem. If that's the case then the sysadmin
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-				# will install probably the gem. So next time an app
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-				# is launched, we'll refresh the RubyGems cache so
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-				# that we can detect new gems.
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-				@refresh_gems_cache = true
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+				# will install probably the gem. So we clear RubyGems's
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+				# cache so that it can detect new gems.
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+				Gem.clear_paths
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         send_error_page(client, 'load_error', :error => e, :app_root => app_root)
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       elsif e.child_exception.nil?
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         send_error_page(client, 'app_exited_during_initialization', :error => e,

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@@ -194,17 +194,6 @@ class IO
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   end
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 end
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-module Gem
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-	# Refresh all RubyGems caches so that newly installed gems can be found.
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-	def self.refresh_all_caches!
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-		# Why doesn't RubyGems already provide an API for this?
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-		cache.refresh!
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-		MUTEX.synchronize do
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-			@searcher = nil
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-		end
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-	end
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-end
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-
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 module GC
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   if !respond_to?(:copy_on_write_friendly?)
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     # Checks whether the current Ruby interpreter's garbage