/usr/lib/ruby/vendor_ruby/ethon/multi/operations.rb is in ruby-ethon 0.7.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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class Multi # :nodoc
# This module contains logic to run a multi.
module Operations
STARTED_MULTI = "ETHON: started MULTI"
PERFORMED_MULTI = "ETHON: performed MULTI"
# Return the multi handle. Inititialize multi handle,
# in case it didn't happened already.
#
# @example Return multi handle.
# multi.handle
#
# @return [ FFI::Pointer ] The multi handle.
def handle
@handle ||= FFI::AutoPointer.new(Curl.multi_init, Curl.method(:multi_cleanup))
end
# Initialize variables.
#
# @example Initialize variables.
# multi.init_vars
#
# @return [ void ]
def init_vars
@timeout = ::FFI::MemoryPointer.new(:long)
@timeval = Curl::Timeval.new
@fd_read = Curl::FDSet.new
@fd_write = Curl::FDSet.new
@fd_excep = Curl::FDSet.new
@max_fd = ::FFI::MemoryPointer.new(:int)
end
# Perform multi.
#
# @return [ nil ]
#
# @example Perform multi.
# multi.perform
def perform
Ethon.logger.debug(STARTED_MULTI)
while ongoing?
run
timeout = get_timeout
next if timeout == 0
reset_fds
set_fds(timeout)
end
Ethon.logger.debug(PERFORMED_MULTI)
nil
end
# Prepare multi.
#
# @return [ nil ]
#
# @example Prepare multi.
# multi.prepare
#
# @deprecated It is no longer necessary to call prepare.
def prepare
Ethon.logger.warn(
"ETHON: It is no longer necessay to call "+
"Multi#prepare. Its going to be removed "+
"in future versions."
)
end
private
# Return wether the multi still requests or not.
#
# @example Return if ongoing.
# multi.ongoing?
#
# @return [ Boolean ] True if ongoing, else false.
def ongoing?
easy_handles.size > 0 || (!defined?(@running_count) || running_count > 0)
end
# Get timeout.
#
# @example Get timeout.
# multi.get_timeout
#
# @return [ Integer ] The timeout.
#
# @raise [ Ethon::Errors::MultiTimeout ] If getting the timeout fails.
def get_timeout
code = Curl.multi_timeout(handle, @timeout)
raise Errors::MultiTimeout.new(code) unless code == :ok
timeout = @timeout.read_long
timeout = 1 if timeout < 0
timeout
end
# Reset file describtors.
#
# @example Reset fds.
# multi.reset_fds
#
# @return [ void ]
def reset_fds
@fd_read.clear
@fd_write.clear
@fd_excep.clear
end
# Set fds.
#
# @example Set fds.
# multi.set_fds
#
# @return [ void ]
#
# @raise [ Ethon::Errors::MultiFdset ] If setting the file descriptors fails.
# @raise [ Ethon::Errors::Select ] If select fails.
def set_fds(timeout)
code = Curl.multi_fdset(handle, @fd_read, @fd_write, @fd_excep, @max_fd)
raise Errors::MultiFdset.new(code) unless code == :ok
max_fd = @max_fd.read_int
if max_fd == -1
sleep(0.001)
else
@timeval[:sec] = timeout / 1000
@timeval[:usec] = (timeout * 1000) % 1000000
code = Curl.select(max_fd + 1, @fd_read, @fd_write, @fd_excep, @timeval)
raise Errors::Select.new(::FFI.errno) if code < 0
end
end
# Check.
#
# @example Check.
# multi.check
#
# @return [ void ]
def check
msgs_left = ::FFI::MemoryPointer.new(:int)
while true
msg = Curl.multi_info_read(handle, msgs_left)
break if msg.null?
next if msg[:code] != :done
easy = easy_handles.find{ |e| e.handle == msg[:easy_handle] }
easy.return_code = msg[:data][:code]
Ethon.logger.debug { "ETHON: performed #{easy.log_inspect}" }
delete(easy)
easy.complete
end
end
# Run.
#
# @example Run
# multi.run
#
# @return [ void ]
def run
running_count_pointer = FFI::MemoryPointer.new(:int)
begin code = trigger(running_count_pointer) end while code == :call_multi_perform
check
end
# Trigger.
#
# @example Trigger.
# multi.trigger
#
# @return [ Symbol ] The Curl.multi_perform return code.
def trigger(running_count_pointer)
code = Curl.multi_perform(handle, running_count_pointer)
@running_count = running_count_pointer.read_int
code
end
# Return number of running requests.
#
# @example Return count.
# multi.running_count
#
# @return [ Integer ] Number running requests.
def running_count
@running_count ||= nil
end
end
end
end
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