Branch: refs/heads/master Home: https://github.com/MacRuby/MacRuby Commit: d5d1e6f294dacf658b7c9fa4e3ae2effe7449315 https://github.com/MacRuby/MacRuby/commit/d5d1e6f294dacf658b7c9fa4e3ae2effe7... Author: Watson <watson1978@gmail.com> Date: 2011-06-01 (Wed, 01 Jun 2011) Changed paths: M io.c Log Message: ----------- reduce the memory usage in IO#read. Result: (file size = 100 MB) ---- case before after ------------------------------- case 1 : 426,120 KB 320,524 KB case 2 : 117,312 KB 11,996 KB {{{ def memory pid = $$ str = `ps alx | grep '#{pid}.*ruby'` str.split[7] end File.open("/tmp/foo", "r") {|f| case ARGV[0].to_i when 1 # case 1 f.read when 2 # case 2 f.read(1024 * 1024) else raise "\n******** chose 1 or 2 ********\n" end } puts memory + " KB" }}} {{{ require 'test/unit/assertions.rb' include Test::Unit::Assertions str = "foo\nbar\nbaz0123456789" IO.pipe {|r, w| w.write str w.close assert_equal(str, r.read) } IO.pipe {|r, w| w.write str w.close assert_equal("fo", r.read(2)) } require 'socket' svr = TCPServer.new("localhost", 0) th = Thread.new { loop do c = svr.accept c.write str c.close end } addr = svr.addr sock = TCPSocket.open(addr[3], addr[1]) assert_equal(str, sock.read) sock.close sock = TCPSocket.open(addr[3], addr[1]) assert_equal("fo", sock.gets("\n", 2)) assert_equal("o\nbar\nbaz0123456789", sock.read) sock.close puts :ok }}}