# File sync.rb, line 88
def Sync_m.append_features(cl)
super
# do nothing for Modules
# make aliases for Classes.
define_aliases(cl) unless cl.instance_of?(Module)
self
end
# File sync.rb, line 76
def Sync_m.define_aliases(cl)
cl.module_eval %{
alias locked? sync_locked?
alias shared? sync_shared?
alias exclusive? sync_exclusive?
alias lock sync_lock
alias unlock sync_unlock
alias try_lock sync_try_lock
alias synchronize sync_synchronize
}
end
# File sync.rb, line 123
def sync_exclusive?
sync_mode == EX
end
# File sync.rb, line 101
def sync_extend
unless (defined? locked? and
defined? shared? and
defined? exclusive? and
defined? lock and
defined? unlock and
defined? try_lock and
defined? synchronize)
Sync_m.define_aliases(singleton_class)
end
sync_initialize
end
# File sync.rb, line 239
def sync_inspect
sync_iv = instance_variables.select{|iv| /^@sync_/ =~ iv.id2name}.collect{|iv| iv.id2name + '=' + instance_eval(iv.id2name).inspect}.join(",")
print "<#{self.class}.extend Sync_m: #{inspect}, <Sync_m: #{sync_iv}>"
end
# File sync.rb, line 136
def sync_lock(m = EX)
return unlock if m == UN
while true
@sync_mutex.synchronize do
if sync_try_lock_sub(m)
return self
else
if sync_sh_locker[Thread.current]
sync_upgrade_waiting.push [Thread.current, sync_sh_locker[Thread.current]]
sync_sh_locker.delete(Thread.current)
else
sync_waiting.push Thread.current
end
@sync_mutex.sleep
end
end
end
self
end
accessing
# File sync.rb, line 115
def sync_locked?
sync_mode != UN
end
# File sync.rb, line 222
def sync_synchronize(mode = EX)
sync_lock(mode)
begin
yield
ensure
sync_unlock
end
end
locking methods.
# File sync.rb, line 128
def sync_try_lock(mode = EX)
return unlock if mode == UN
@sync_mutex.synchronize do
ret = sync_try_lock_sub(mode)
end
ret
end
# File sync.rb, line 157
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
self.sync_ex_locker = nil
if sync_sh_locker.include?(Thread.current)
self.sync_mode = SH
else
self.sync_mode = UN
end
runnable = true
end
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
sync_sh_locker.delete(Thread.current)
if sync_sh_locker.empty? and sync_ex_count == 0
self.sync_mode = UN
runnable = true
end
end
end
end
if runnable
if sync_upgrade_waiting.size > 0
th, count = sync_upgrade_waiting.shift
sync_sh_locker[th] = count
th.wakeup
wakeup_threads.push th
else
wait = sync_waiting
self.sync_waiting = []
for th in wait
th.wakeup
wakeup_threads.push th
end
end
end
end
for th in wakeup_threads
th.run
end
self
end