1*e3723e1fSApple OSS Distributionsfrom xnu import * 2*e3723e1fSApple OSS Distributionsfrom scheduler import GetRecentTimestamp 3*e3723e1fSApple OSS Distributionsimport xnudefines 4*e3723e1fSApple OSS Distributions 5*e3723e1fSApple OSS Distributionsulock_types = { 6*e3723e1fSApple OSS Distributions 1: "COMPARE_AND_WAIT", 7*e3723e1fSApple OSS Distributions 2: "UNFAIR_LOCK", 8*e3723e1fSApple OSS Distributions 3: "UNFAIR_LOCK64_SHARED", 9*e3723e1fSApple OSS Distributions 4: "COMPARE_AND_WAIT64", 10*e3723e1fSApple OSS Distributions 5: "COMPARE_AND_WAIT64_SHARED" 11*e3723e1fSApple OSS Distributions} 12*e3723e1fSApple OSS Distributions 13*e3723e1fSApple OSS Distributions@header("{:<20s} {:<20s} {:<20s} {:<20s} {:<20s} {:<20s} {:<20s}".format( 14*e3723e1fSApple OSS Distributions 'ull_t', 'kind', 'addr/obj', 'task/offs', 'owner', 'turnstile', 'waiters')) 15*e3723e1fSApple OSS Distributionsdef GetUlockSummary(ull): 16*e3723e1fSApple OSS Distributions code = int(ull.ull_opcode) 17*e3723e1fSApple OSS Distributions if code in ulock_types: 18*e3723e1fSApple OSS Distributions ull_type = ulock_types[code] 19*e3723e1fSApple OSS Distributions else: 20*e3723e1fSApple OSS Distributions ull_type = "{:#x}".format(code) 21*e3723e1fSApple OSS Distributions 22*e3723e1fSApple OSS Distributions s = "{ull: <#20x} {ull_type: <20s}".format(ull=ull, ull_type=ull_type) 23*e3723e1fSApple OSS Distributions ulk=ull.ull_key 24*e3723e1fSApple OSS Distributions if int(ulk.ulk_key_type) == 1: 25*e3723e1fSApple OSS Distributions s += " {ulk.ulk_addr: <#20x} {ulk.ulk_task: <#20x}".format(ulk=ulk) 26*e3723e1fSApple OSS Distributions elif int(ulk.ulk_key_type) == 2: 27*e3723e1fSApple OSS Distributions s += " {ulk.ulk_object: <#20x} {ulk.ulk_offset: <10d}".format(ulk=ulk) 28*e3723e1fSApple OSS Distributions else: 29*e3723e1fSApple OSS Distributions s += " {:<20s} {:<10s}".format("", "") 30*e3723e1fSApple OSS Distributions 31*e3723e1fSApple OSS Distributions return s + " {ull.ull_owner: <#20x} {ull.ull_turnstile: <#20x} {ull.ull_nwaiters: >7d}".format(ull=ull) 32*e3723e1fSApple OSS Distributions 33*e3723e1fSApple OSS Distributions@lldb_command('showallulocks', fancy=True) 34*e3723e1fSApple OSS Distributionsdef ShowAllUlocks(cmd_args=None, cmd_options={}, O=None): 35*e3723e1fSApple OSS Distributions """ Display a summary of all the ulocks in the system 36*e3723e1fSApple OSS Distributions 37*e3723e1fSApple OSS Distributions usage: showallulocks 38*e3723e1fSApple OSS Distributions """ 39*e3723e1fSApple OSS Distributions 40*e3723e1fSApple OSS Distributions with O.table(GetUlockSummary.header): 41*e3723e1fSApple OSS Distributions count = kern.globals.ull_hash_buckets; 42*e3723e1fSApple OSS Distributions buckets = kern.globals.ull_bucket 43*e3723e1fSApple OSS Distributions for i in range(0, count): 44*e3723e1fSApple OSS Distributions for ull in IterateLinkageChain(addressof(buckets[i].ulb_head), 'ull_t *', 'ull_hash_link'): 45*e3723e1fSApple OSS Distributions print(GetUlockSummary(ull)) 46