void
SystemRuntimeMacOSX::CompleteQueueItem (QueueItem *queue_item, addr_t item_ref)
{
AppleGetItemInfoHandler::GetItemInfoReturnInfo ret;
ThreadSP cur_thread_sp (m_process->GetThreadList().GetSelectedThread());
Error error;
ret = m_get_item_info_handler.GetItemInfo (*cur_thread_sp.get(), item_ref, m_page_to_free, m_page_to_free_size, error);
m_page_to_free = LLDB_INVALID_ADDRESS;
m_page_to_free_size = 0;
if (ret.item_buffer_ptr != 0 && ret.item_buffer_ptr != LLDB_INVALID_ADDRESS && ret.item_buffer_size > 0)
{
DataBufferHeap data (ret.item_buffer_size, 0);
if (m_process->ReadMemory (ret.item_buffer_ptr, data.GetBytes(), ret.item_buffer_size, error) && error.Success())
{
DataExtractor extractor (data.GetBytes(), data.GetByteSize(), m_process->GetByteOrder(), m_process->GetAddressByteSize());
ItemInfo item = ExtractItemInfoFromBuffer (extractor);
queue_item->SetItemThatEnqueuedThis (item.item_that_enqueued_this);
queue_item->SetEnqueueingThreadID (item.enqueuing_thread_id);
queue_item->SetEnqueueingQueueID (item.enqueuing_queue_serialnum);
queue_item->SetStopID (item.stop_id);
queue_item->SetEnqueueingBacktrace (item.enqueuing_callstack);
queue_item->SetThreadLabel (item.enqueuing_thread_label);
queue_item->SetQueueLabel (item.enqueuing_queue_label);
queue_item->SetTargetQueueLabel (item.target_queue_label);
}
m_page_to_free = ret.item_buffer_ptr;
m_page_to_free_size = ret.item_buffer_size;
}
}
ThreadSP
SystemRuntimeMacOSX::GetExtendedBacktraceThread (ThreadSP real_thread, ConstString type)
{
ThreadSP originating_thread_sp;
if (BacktraceRecordingHeadersInitialized() && type == ConstString ("libdispatch"))
{
Error error;
// real_thread is either an actual, live thread (in which case we need to call into
// libBacktraceRecording to find its originator) or it is an extended backtrace itself,
// in which case we get the token from it and call into libBacktraceRecording to find
// the originator of that token.
if (real_thread->GetExtendedBacktraceToken() != LLDB_INVALID_ADDRESS)
{
originating_thread_sp = GetExtendedBacktraceFromItemRef (real_thread->GetExtendedBacktraceToken());
}
else
{
ThreadSP cur_thread_sp (m_process->GetThreadList().GetSelectedThread());
AppleGetThreadItemInfoHandler::GetThreadItemInfoReturnInfo ret = m_get_thread_item_info_handler.GetThreadItemInfo (*cur_thread_sp.get(), real_thread->GetID(), m_page_to_free, m_page_to_free_size, error);
m_page_to_free = LLDB_INVALID_ADDRESS;
m_page_to_free_size = 0;
if (ret.item_buffer_ptr != 0 && ret.item_buffer_ptr != LLDB_INVALID_ADDRESS && ret.item_buffer_size > 0)
{
DataBufferHeap data (ret.item_buffer_size, 0);
if (m_process->ReadMemory (ret.item_buffer_ptr, data.GetBytes(), ret.item_buffer_size, error) && error.Success())
{
DataExtractor extractor (data.GetBytes(), data.GetByteSize(), m_process->GetByteOrder(), m_process->GetAddressByteSize());
ItemInfo item = ExtractItemInfoFromBuffer (extractor);
bool stop_id_is_valid = true;
if (item.stop_id == 0)
stop_id_is_valid = false;
originating_thread_sp.reset (new HistoryThread (*m_process,
item.enqueuing_thread_id,
item.enqueuing_callstack,
item.stop_id,
stop_id_is_valid));
originating_thread_sp->SetExtendedBacktraceToken (item.item_that_enqueued_this);
originating_thread_sp->SetQueueName (item.enqueuing_queue_label.c_str());
originating_thread_sp->SetQueueID (item.enqueuing_queue_serialnum);
// originating_thread_sp->SetThreadName (item.enqueuing_thread_label.c_str());
}
m_page_to_free = ret.item_buffer_ptr;
m_page_to_free_size = ret.item_buffer_size;
}
}
}
return originating_thread_sp;
}
ThreadSP
SystemRuntimeMacOSX::GetExtendedBacktraceFromItemRef (lldb::addr_t item_ref)
{
ThreadSP return_thread_sp;
AppleGetItemInfoHandler::GetItemInfoReturnInfo ret;
ThreadSP cur_thread_sp (m_process->GetThreadList().GetSelectedThread());
Error error;
ret = m_get_item_info_handler.GetItemInfo (*cur_thread_sp.get(), item_ref, m_page_to_free, m_page_to_free_size, error);
m_page_to_free = LLDB_INVALID_ADDRESS;
m_page_to_free_size = 0;
if (ret.item_buffer_ptr != 0 && ret.item_buffer_ptr != LLDB_INVALID_ADDRESS && ret.item_buffer_size > 0)
{
DataBufferHeap data (ret.item_buffer_size, 0);
if (m_process->ReadMemory (ret.item_buffer_ptr, data.GetBytes(), ret.item_buffer_size, error) && error.Success())
{
DataExtractor extractor (data.GetBytes(), data.GetByteSize(), m_process->GetByteOrder(), m_process->GetAddressByteSize());
ItemInfo item = ExtractItemInfoFromBuffer (extractor);
bool stop_id_is_valid = true;
if (item.stop_id == 0)
stop_id_is_valid = false;
return_thread_sp.reset (new HistoryThread (*m_process,
item.enqueuing_thread_id,
item.enqueuing_callstack,
item.stop_id,
stop_id_is_valid));
return_thread_sp->SetExtendedBacktraceToken (item.item_that_enqueued_this);
return_thread_sp->SetQueueName (item.enqueuing_queue_label.c_str());
return_thread_sp->SetQueueID (item.enqueuing_queue_serialnum);
// return_thread_sp->SetThreadName (item.enqueuing_thread_label.c_str());
m_page_to_free = ret.item_buffer_ptr;
m_page_to_free_size = ret.item_buffer_size;
}
}
return return_thread_sp;
}
void
SystemRuntimeMacOSX::PopulateQueuesUsingLibBTR (lldb::addr_t queues_buffer, uint64_t queues_buffer_size,
uint64_t count, lldb_private::QueueList &queue_list)
{
Error error;
DataBufferHeap data (queues_buffer_size, 0);
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_SYSTEM_RUNTIME));
if (m_process->ReadMemory (queues_buffer, data.GetBytes(), queues_buffer_size, error) == queues_buffer_size && error.Success())
{
// We've read the information out of inferior memory; free it on the next call we make
m_page_to_free = queues_buffer;
m_page_to_free_size = queues_buffer_size;
DataExtractor extractor (data.GetBytes(), data.GetByteSize(), m_process->GetByteOrder(), m_process->GetAddressByteSize());
offset_t offset = 0;
uint64_t queues_read = 0;
// The information about the queues is stored in this format (v1):
// typedef struct introspection_dispatch_queue_info_s {
// uint32_t offset_to_next;
// dispatch_queue_t queue;
// uint64_t serialnum; // queue's serialnum in the process, as provided by libdispatch
// uint32_t running_work_items_count;
// uint32_t pending_work_items_count;
//
// char data[]; // Starting here, we have variable-length data:
// // char queue_label[];
// } introspection_dispatch_queue_info_s;
while (queues_read < count && offset < queues_buffer_size)
{
offset_t start_of_this_item = offset;
uint32_t offset_to_next = extractor.GetU32 (&offset);
offset += 4; // Skip over the 4 bytes of reserved space
addr_t queue = extractor.GetPointer (&offset);
uint64_t serialnum = extractor.GetU64 (&offset);
uint32_t running_work_items_count = extractor.GetU32 (&offset);
uint32_t pending_work_items_count = extractor.GetU32 (&offset);
// Read the first field of the variable length data
offset = start_of_this_item + m_lib_backtrace_recording_info.queue_info_data_offset;
const char *queue_label = extractor.GetCStr (&offset);
if (queue_label == NULL)
queue_label = "";
offset_t start_of_next_item = start_of_this_item + offset_to_next;
offset = start_of_next_item;
if (log)
log->Printf ("SystemRuntimeMacOSX::PopulateQueuesUsingLibBTR added queue with dispatch_queue_t 0x%" PRIx64 ", serial number 0x%" PRIx64 ", running items %d, pending items %d, name '%s'", queue, serialnum, running_work_items_count, pending_work_items_count, queue_label);
QueueSP queue_sp (new Queue (m_process->shared_from_this(), serialnum, queue_label));
queue_sp->SetNumRunningWorkItems (running_work_items_count);
queue_sp->SetNumPendingWorkItems (pending_work_items_count);
queue_sp->SetLibdispatchQueueAddress (queue);
queue_sp->SetKind (GetQueueKind (queue));
queue_list.AddQueue (queue_sp);
queues_read++;
}
}
}
SystemRuntimeMacOSX::PendingItemsForQueue
SystemRuntimeMacOSX::GetPendingItemRefsForQueue (lldb::addr_t queue)
{
PendingItemsForQueue pending_item_refs;
AppleGetPendingItemsHandler::GetPendingItemsReturnInfo pending_items_pointer;
ThreadSP cur_thread_sp (m_process->GetThreadList().GetSelectedThread());
if (cur_thread_sp)
{
Error error;
pending_items_pointer = m_get_pending_items_handler.GetPendingItems (*cur_thread_sp.get(), queue, m_page_to_free, m_page_to_free_size, error);
m_page_to_free = LLDB_INVALID_ADDRESS;
m_page_to_free_size = 0;
if (error.Success())
{
if (pending_items_pointer.count > 0
&& pending_items_pointer.items_buffer_size > 0
&& pending_items_pointer.items_buffer_ptr != 0
&& pending_items_pointer.items_buffer_ptr != LLDB_INVALID_ADDRESS)
{
DataBufferHeap data (pending_items_pointer.items_buffer_size, 0);
if (m_process->ReadMemory (pending_items_pointer.items_buffer_ptr, data.GetBytes(), pending_items_pointer.items_buffer_size, error))
{
DataExtractor extractor (data.GetBytes(), data.GetByteSize(), m_process->GetByteOrder(), m_process->GetAddressByteSize());
// We either have an array of
// void* item_ref
// (old style) or we have a structure returned which looks like
//
// struct introspection_dispatch_pending_item_info_s {
// void *item_ref;
// void *function_or_block;
// };
//
// struct introspection_dispatch_pending_items_array_s {
// uint32_t version;
// uint32_t size_of_item_info;
// introspection_dispatch_pending_item_info_s items[];
// }
offset_t offset = 0;
int i = 0;
uint32_t version = extractor.GetU32(&offset);
if (version == 1)
{
pending_item_refs.new_style = true;
uint32_t item_size = extractor.GetU32(&offset);
uint32_t start_of_array_offset = offset;
while (offset < pending_items_pointer.items_buffer_size &&
static_cast<size_t>(i) < pending_items_pointer.count)
{
offset = start_of_array_offset + (i * item_size);
ItemRefAndCodeAddress item;
item.item_ref = extractor.GetPointer (&offset);
item.code_address = extractor.GetPointer (&offset);
pending_item_refs.item_refs_and_code_addresses.push_back (item);
i++;
}
}
else
{
offset = 0;
pending_item_refs.new_style = false;
while (offset < pending_items_pointer.items_buffer_size &&
static_cast<size_t>(i) < pending_items_pointer.count)
{
ItemRefAndCodeAddress item;
item.item_ref = extractor.GetPointer (&offset);
item.code_address = LLDB_INVALID_ADDRESS;
pending_item_refs.item_refs_and_code_addresses.push_back (item);
i++;
}
}
}
m_page_to_free = pending_items_pointer.items_buffer_ptr;
m_page_to_free_size = pending_items_pointer.items_buffer_size;
}
}
}
return pending_item_refs;
}