# File lib/timeout.rb, line 170deftimeout(sec,klass =nil,message =nil,&block)#:yield: +sec+returnyield(sec)ifsec==nilorsec.zero?raiseArgumentError,"Timeout sec must be a non-negative number"if0>secmessage||="execution expired"ifFiber.respond_to?(:current_scheduler)&& (scheduler =Fiber.current_scheduler)&.respond_to?(:timeout_after)returnscheduler.timeout_after(sec,klass||Error,message,&block)endTimeout.ensure_timeout_thread_createdperform =Proc.newdo|exc|request =Request.new(Thread.current,sec,exc,message)QUEUE_MUTEX.synchronizedoQUEUE<<requestCONDVAR.signalendbeginreturnyield(sec)ensurerequest.finishedendendifklassperform.call(klass)elseError.handle_timeout(message,&perform)endend

Perform an operation in a block, raising an error if it takes longer thansec seconds to complete.

sec

Number of seconds to wait for the block to terminate. Any non-negative number or nil may be used, including Floats to specify fractional seconds. A value of 0 ornil will execute the block without any timeout. Any negative number will raise anArgumentError.

klass

Exception Class to raise if the block fails to terminate insec seconds. Omitting will use the default,Timeout::Error

message

Error message to raise withException Class. Omitting will use the default, “execution expired”

Returns the result of the blockif the block completed beforesec seconds, otherwise throws an exception, based on the value ofklass.

The exception thrown to terminate the given block cannot be rescued inside the block unlessklass is given explicitly. However, the block can use ensure to prevent the handling of the exception. For that reason, this method cannot be relied on to enforce timeouts for untrusted blocks.

If a scheduler is defined, it will be used to handle the timeout by invoking Scheduler#timeout_after.

Note that this is both a method of moduleTimeout, so you caninclude Timeout into your classes so they have atimeout method, as well as a module method, so you can call it directly asTimeout.timeout().

# File lib/timeout.rb, line 170deftimeout(sec,klass =nil,message =nil,&block)#:yield: +sec+returnyield(sec)ifsec==nilorsec.zero?raiseArgumentError,"Timeout sec must be a non-negative number"if0>secmessage||="execution expired"ifFiber.respond_to?(:current_scheduler)&& (scheduler =Fiber.current_scheduler)&.respond_to?(:timeout_after)returnscheduler.timeout_after(sec,klass||Error,message,&block)endTimeout.ensure_timeout_thread_createdperform =Proc.newdo|exc|request =Request.new(Thread.current,sec,exc,message)QUEUE_MUTEX.synchronizedoQUEUE<<requestCONDVAR.signalendbeginreturnyield(sec)ensurerequest.finishedendendifklassperform.call(klass)elseError.handle_timeout(message,&perform)endend

Perform an operation in a block, raising an error if it takes longer thansec seconds to complete.

sec

Number of seconds to wait for the block to terminate. Any non-negative number or nil may be used, including Floats to specify fractional seconds. A value of 0 ornil will execute the block without any timeout. Any negative number will raise anArgumentError.

klass

Exception Class to raise if the block fails to terminate insec seconds. Omitting will use the default,Timeout::Error

message

Error message to raise withException Class. Omitting will use the default, “execution expired”

Returns the result of the blockif the block completed beforesec seconds, otherwise throws an exception, based on the value ofklass.

The exception thrown to terminate the given block cannot be rescued inside the block unlessklass is given explicitly. However, the block can use ensure to prevent the handling of the exception. For that reason, this method cannot be relied on to enforce timeouts for untrusted blocks.

If a scheduler is defined, it will be used to handle the timeout by invoking Scheduler#timeout_after.

Note that this is both a method of moduleTimeout, so you caninclude Timeout into your classes so they have atimeout method, as well as a module method, so you can call it directly asTimeout.timeout().