1 files changed, 24 insertions, 24 deletions

diff --git a/lib/sync.rb b/lib/sync.rb
index f4dea76d1f..36c4c08d45 100644
--- a/lib/sync.rb
+++ b/lib/sync.rb
@@ -34,7 +34,7 @@
 #   Sync#lock(mode)     -- mode = :EX, :SH, :UN
 #   Sync#unlock
 #   Sync#synchronize(mode) {...}
-#   
+#
 #
 
 unless defined? Thread
@@ -43,25 +43,25 @@ end
 
 module Sync_m
   RCS_ID='-$Header$-'
-  
+
   # lock mode
   UN = :UN
   SH = :SH
   EX = :EX
-  
+
   # exceptions
   class Err < StandardError
     def Err.Fail(*opt)
       fail self, sprintf(self::Message, *opt)
     end
-    
+
     class UnknownLocker < Err
       Message = "Thread(%s) not locked."
       def UnknownLocker.Fail(th)
 	super(th.inspect)
       end
     end
-    
+
     class LockModeFailer < Err
       Message = "Unknown lock mode(%s)"
       def LockModeFailer.Fail(mode)
@@ -72,7 +72,7 @@ module Sync_m
       end
     end
   end
-  
+
   def Sync_m.define_aliases(cl)
     cl.module_eval %q{
       alias locked? sync_locked?
@@ -84,7 +84,7 @@ module Sync_m
       alias synchronize sync_synchronize
     }
   end
-  
+
   def Sync_m.append_features(cl)
     super
     # do nothing for Modules
@@ -92,12 +92,12 @@ module Sync_m
     define_aliases(cl) unless cl.instance_of?(Module)
     self
   end
-  
+
   def Sync_m.extend_object(obj)
     super
     obj.sync_extend
   end
-  
+
   def sync_extend
     unless (defined? locked? and
 	    defined? shared? and
@@ -115,15 +115,15 @@ module Sync_m
   def sync_locked?
     sync_mode != UN
   end
-  
+
   def sync_shared?
     sync_mode == SH
   end
-  
+
   def sync_exclusive?
     sync_mode == EX
   end
-  
+
   # locking methods.
   def sync_try_lock(mode = EX)
     return unlock if mode == UN
@@ -132,7 +132,7 @@ module Sync_m
     end
     ret
   end
-  
+
   def sync_lock(m = EX)
     return unlock if m == UN
 
@@ -153,21 +153,21 @@ module Sync_m
     end
     self
   end
-  
+
   def sync_unlock(m = EX)
     wakeup_threads = []
     @sync_mutex.synchronize do
       if sync_mode == UN
 	Err::UnknownLocker.Fail(Thread.current)
       end
-      
+
       m = sync_mode if m == EX and sync_mode == SH
-      
+
       runnable = false
       case m
       when UN
 	Err::UnknownLocker.Fail(Thread.current)
-	
+
       when EX
 	if sync_ex_locker == Thread.current
 	  if (self.sync_ex_count = sync_ex_count - 1) == 0
@@ -182,12 +182,12 @@ module Sync_m
 	else
 	  Err::UnknownLocker.Fail(Thread.current)
 	end
-	
+
       when SH
 	if (count = sync_sh_locker[Thread.current]).nil?
 	  Err::UnknownLocker.Fail(Thread.current)
 	else
-	  if (sync_sh_locker[Thread.current] = count - 1) == 0 
+	  if (sync_sh_locker[Thread.current] = count - 1) == 0
 	    sync_sh_locker.delete(Thread.current)
 	    if sync_sh_locker.empty? and sync_ex_count == 0
 	      self.sync_mode = UN
@@ -196,7 +196,7 @@ module Sync_m
 	  end
 	end
       end
-      
+
       if runnable
 	if sync_upgrade_waiting.size > 0
 	  th, count = sync_upgrade_waiting.shift
@@ -218,7 +218,7 @@ module Sync_m
     end
     self
   end
-  
+
   def sync_synchronize(mode = EX)
     sync_lock(mode)
     begin
@@ -229,7 +229,7 @@ module Sync_m
   end
 
   attr_accessor :sync_mode
-    
+
   attr_accessor :sync_waiting
   attr_accessor :sync_upgrade_waiting
   attr_accessor :sync_sh_locker
@@ -258,7 +258,7 @@ module Sync_m
     super
     sync_initialize
   end
-    
+
   def sync_try_lock_sub(m)
     case m
     when SH
@@ -282,7 +282,7 @@ module Sync_m
       end
     when EX
       if sync_mode == UN or
-	  sync_mode == SH && sync_sh_locker.size == 1 && sync_sh_locker.include?(Thread.current) 
+	  sync_mode == SH && sync_sh_locker.size == 1 && sync_sh_locker.include?(Thread.current)
 	self.sync_mode = m
 	self.sync_ex_locker = Thread.current
 	self.sync_ex_count = 1