1*fdd8201dSApple OSS Distributions#!/usr/local/bin/recon 2*fdd8201dSApple OSS Distributions 3*fdd8201dSApple OSS Distributionslocal ktrace = require 'ktrace' 4*fdd8201dSApple OSS Distributions 5*fdd8201dSApple OSS Distributionsif arg[1] == '-h' then 6*fdd8201dSApple OSS Distributions io.stderr:write[[ 7*fdd8201dSApple OSS Distributionsusage: pirate [<trace-file-path>] 8*fdd8201dSApple OSS Distributions 9*fdd8201dSApple OSS Distributionspirate monitors for jetsam, on the high seas! 10*fdd8201dSApple OSS Distributions]] 11*fdd8201dSApple OSS Distributions os.exit(0) 12*fdd8201dSApple OSS Distributionsend 13*fdd8201dSApple OSS Distributions 14*fdd8201dSApple OSS Distributionslocal sess = ktrace.Session.new(arg[1]) 15*fdd8201dSApple OSS Distributions 16*fdd8201dSApple OSS Distributionssess:add_callback_pair('MEMSTAT_jetsam', function (start, finish) 17*fdd8201dSApple OSS Distributions local pid = finish[2] 18*fdd8201dSApple OSS Distributions local reclaimed_kb = finish[4] / 1024 19*fdd8201dSApple OSS Distributions local duration_ns = sess:ns_from_abs(finish.abstime - start.abstime) 20*fdd8201dSApple OSS Distributions print(('%12f: %32s: duration = %gus, reclaimed = %gKB'):format( 21*fdd8201dSApple OSS Distributions sess:relns_from_abs(start.abstime) / 1e9, sess:procname_for_pid(pid), 22*fdd8201dSApple OSS Distributions duration_ns / 1000, reclaimed_kb)) 23*fdd8201dSApple OSS Distributionsend) 24*fdd8201dSApple OSS Distributions 25*fdd8201dSApple OSS Distributionslocal ok, err = sess:start() 26*fdd8201dSApple OSS Distributionsif not ok then 27*fdd8201dSApple OSS Distributions io.stderr:write('pirate: failed to start tracing: ', err, '\n') 28*fdd8201dSApple OSS Distributions os.exit(1) 29*fdd8201dSApple OSS Distributionsend 30