X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/5ba3f43ea354af8ad55bea84372a2bc834d8757c..4ba76501152d51ccb5647018f3192c6096367d48:/tools/lldbmacros/core/operating_system.py diff --git a/tools/lldbmacros/core/operating_system.py b/tools/lldbmacros/core/operating_system.py index 2e7e21847..c1fc18cc3 100755 --- a/tools/lldbmacros/core/operating_system.py +++ b/tools/lldbmacros/core/operating_system.py @@ -649,6 +649,32 @@ def IterateQueue(queue_head, element_ptr_type, element_field_name): yield elt cur_elt = elt.GetChildMemberWithName(element_field_name).GetChildMemberWithName('next') +def IterateCircleQueue(queue_head, element_ptr_type, element_field_name): + """ iterate over a circle queue in kernel of type circle_queue_head_t. refer to osfmk/kern/circle_queue.h + params: + queue_head - lldb.SBValue : Value object for queue_head. + element_type - lldb.SBType : a pointer type of the element 'next' points to. Typically its structs like thread, task etc.. + element_field_name - str : name of the field in target struct. + returns: + A generator does not return. It is used for iterating. + SBValue : an object thats of type (element_type) queue_head->next. Always a pointer object + """ + head = queue_head.head + queue_head_addr = 0x0 + if head.TypeIsPointerType(): + queue_head_addr = head.GetValueAsUnsigned() + else: + queue_head_addr = head.GetAddress().GetLoadAddress(osplugin_target_obj) + cur_elt = head + while True: + if not cur_elt.IsValid() or cur_elt.GetValueAsUnsigned() == 0: + break + elt = cur_elt.Cast(element_ptr_type) + yield elt + cur_elt = elt.GetChildMemberWithName(element_field_name).GetChildMemberWithName('next') + if cur_elt.GetValueAsUnsigned() == queue_head_addr: + break + def GetUniqueSessionID(process_obj): """ Create a unique session identifier. params: