1*aca3beaaSApple OSS Distributionsfrom __future__ import absolute_import, print_function 2*aca3beaaSApple OSS Distributions 3*aca3beaaSApple OSS Distributionsfrom builtins import range 4*aca3beaaSApple OSS Distributions 5*aca3beaaSApple OSS Distributionsfrom xnu import * 6*aca3beaaSApple OSS Distributionsfrom scheduler import GetRecentTimestamp 7*aca3beaaSApple OSS Distributionsimport xnudefines 8*aca3beaaSApple OSS Distributions 9*aca3beaaSApple OSS Distributionsulock_types = { 10*aca3beaaSApple OSS Distributions 1: "COMPARE_AND_WAIT", 11*aca3beaaSApple OSS Distributions 2: "UNFAIR_LOCK", 12*aca3beaaSApple OSS Distributions 3: "UNFAIR_LOCK64_SHARED", 13*aca3beaaSApple OSS Distributions 4: "COMPARE_AND_WAIT64", 14*aca3beaaSApple OSS Distributions 5: "COMPARE_AND_WAIT64_SHARED" 15*aca3beaaSApple OSS Distributions} 16*aca3beaaSApple OSS Distributions 17*aca3beaaSApple OSS Distributions@header("{:<20s} {:<20s} {:<20s} {:<10s} {:<20s} {:<20s} {:<20s}".format( 18*aca3beaaSApple OSS Distributions 'ull_t', 'kind', 'addr/obj', 'pid/offs', 'owner', 'turnstile', 'waiters')) 19*aca3beaaSApple OSS Distributionsdef GetUlockSummary(ull): 20*aca3beaaSApple OSS Distributions code = int(ull.ull_opcode) 21*aca3beaaSApple OSS Distributions if code in ulock_types: 22*aca3beaaSApple OSS Distributions ull_type = ulock_types[code] 23*aca3beaaSApple OSS Distributions else: 24*aca3beaaSApple OSS Distributions ull_type = "{:#x}".format(code) 25*aca3beaaSApple OSS Distributions 26*aca3beaaSApple OSS Distributions s = "{ull: <#20x} {ull_type: <20s}".format(ull=ull, ull_type=ull_type) 27*aca3beaaSApple OSS Distributions ulk=ull.ull_key 28*aca3beaaSApple OSS Distributions if int(ulk.ulk_key_type) == 1: 29*aca3beaaSApple OSS Distributions s += " {ulk.ulk_addr: <#20x} {ulk.ulk_pid: <10d}".format(ulk=ulk) 30*aca3beaaSApple OSS Distributions elif int(ulk.ulk_key_type) == 2: 31*aca3beaaSApple OSS Distributions s += " {ulk.ulk_object: <#20x} {ulk.ulk_offset: <10d}".format(ulk=ulk) 32*aca3beaaSApple OSS Distributions else: 33*aca3beaaSApple OSS Distributions s += " {:<20s} {:<10s}".format("", "") 34*aca3beaaSApple OSS Distributions 35*aca3beaaSApple OSS Distributions return s + " {ull.ull_owner: <#20x} {ull.ull_turnstile: <#20x} {ull.ull_nwaiters: >7d}".format(ull=ull) 36*aca3beaaSApple OSS Distributions 37*aca3beaaSApple OSS Distributions@lldb_command('showallulocks', fancy=True) 38*aca3beaaSApple OSS Distributionsdef ShowAllUlocks(cmd_args=None, cmd_options={}, O=None): 39*aca3beaaSApple OSS Distributions """ Display a summary of all the ulocks in the system 40*aca3beaaSApple OSS Distributions 41*aca3beaaSApple OSS Distributions usage: showallulocks 42*aca3beaaSApple OSS Distributions """ 43*aca3beaaSApple OSS Distributions 44*aca3beaaSApple OSS Distributions with O.table(GetUlockSummary.header): 45*aca3beaaSApple OSS Distributions count = kern.globals.ull_hash_buckets; 46*aca3beaaSApple OSS Distributions buckets = kern.globals.ull_bucket 47*aca3beaaSApple OSS Distributions for i in range(0, count): 48*aca3beaaSApple OSS Distributions for ull in IterateLinkageChain(addressof(buckets[i].ulb_head), 'ull_t *', 'ull_hash_link'): 49*aca3beaaSApple OSS Distributions print(GetUlockSummary(ull)) 50