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//===-- SystemRuntimeMacOSX.h -----------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef liblldb_SystemRuntimeMacOSX_h_
#define liblldb_SystemRuntimeMacOSX_h_
// C Includes
// C++ Includes
#include <map>
#include <vector>
#include <string>
// Other libraries and framework includes
#include "lldb/Target/SystemRuntime.h"
#include "lldb/Host/FileSpec.h"
#include "lldb/Core/ConstString.h"
#include "lldb/Core/ModuleList.h"
#include "lldb/Core/UUID.h"
#include "lldb/Host/Mutex.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/QueueItem.h"
#include "AppleGetItemInfoHandler.h"
#include "AppleGetQueuesHandler.h"
#include "AppleGetPendingItemsHandler.h"
#include "AppleGetThreadItemInfoHandler.h"
class SystemRuntimeMacOSX : public lldb_private::SystemRuntime
{
public:
//------------------------------------------------------------------
// Static Functions
//------------------------------------------------------------------
static void
Initialize();
static void
Terminate();
static lldb_private::ConstString
GetPluginNameStatic();
static const char *
GetPluginDescriptionStatic();
static lldb_private::SystemRuntime *
CreateInstance (lldb_private::Process *process);
//------------------------------------------------------------------
// instance methods
//------------------------------------------------------------------
SystemRuntimeMacOSX (lldb_private::Process *process);
virtual
~SystemRuntimeMacOSX ();
void
Clear (bool clear_process);
void
Detach ();
const std::vector<lldb_private::ConstString> &
GetExtendedBacktraceTypes ();
lldb::ThreadSP
GetExtendedBacktraceThread (lldb::ThreadSP thread, lldb_private::ConstString type);
lldb::ThreadSP
GetExtendedBacktraceForQueueItem (lldb::QueueItemSP queue_item_sp, lldb_private::ConstString type);
lldb::ThreadSP
GetExtendedBacktraceFromItemRef (lldb::addr_t item_ref);
void
PopulateQueueList (lldb_private::QueueList &queue_list);
void
PopulateQueuesUsingLibBTR (lldb::addr_t queues_buffer, uint64_t queues_buffer_size, uint64_t count, lldb_private::QueueList &queue_list);
void
PopulatePendingQueuesUsingLibBTR (lldb::addr_t items_buffer, uint64_t items_buffer_size, uint64_t count, lldb_private::Queue *queue);
std::string
GetQueueNameFromThreadQAddress (lldb::addr_t dispatch_qaddr);
lldb::queue_id_t
GetQueueIDFromThreadQAddress (lldb::addr_t dispatch_qaddr);
lldb::addr_t
GetLibdispatchQueueAddressFromThreadQAddress (lldb::addr_t dispatch_qaddr);
void
PopulatePendingItemsForQueue (lldb_private::Queue *queue);
void
CompleteQueueItem (lldb_private::QueueItem *queue_item, lldb::addr_t item_ref);
virtual lldb::QueueKind
GetQueueKind (lldb::addr_t dispatch_queue_addr);
virtual bool
SafeToCallFunctionsOnThisThread (lldb::ThreadSP thread_sp);
//------------------------------------------------------------------
// PluginInterface protocol
//------------------------------------------------------------------
virtual lldb_private::ConstString
GetPluginName();
virtual uint32_t
GetPluginVersion();
protected:
lldb::user_id_t m_break_id;
mutable lldb_private::Mutex m_mutex;
private:
struct libBacktraceRecording_info {
uint16_t queue_info_version;
uint16_t queue_info_data_offset;
uint16_t item_info_version;
uint16_t item_info_data_offset;
libBacktraceRecording_info () :
queue_info_version(0),
queue_info_data_offset(0),
item_info_version(0),
item_info_data_offset(0) {}
};
// A structure which reflects the data recorded in the
// libBacktraceRecording introspection_dispatch_item_info_s.
struct ItemInfo {
lldb::addr_t item_that_enqueued_this;
lldb::addr_t function_or_block;
uint64_t enqueuing_thread_id;
uint64_t enqueuing_queue_serialnum;
uint64_t target_queue_serialnum;
uint32_t enqueuing_callstack_frame_count;
uint32_t stop_id;
std::vector<lldb::addr_t> enqueuing_callstack;
std::string enqueuing_thread_label;
std::string enqueuing_queue_label;
std::string target_queue_label;
};
// The offsets of different fields of the dispatch_queue_t structure in
// a thread/queue process.
// Based on libdispatch src/queue_private.h, struct dispatch_queue_offsets_s
// With dqo_version 1-3, the dqo_label field is a per-queue value and cannot be cached.
// With dqo_version 4 (Mac OS X 10.9 / iOS 7), dqo_label is a constant value that can be cached.
struct LibdispatchOffsets
{
uint16_t dqo_version;
uint16_t dqo_label;
uint16_t dqo_label_size;
uint16_t dqo_flags;
uint16_t dqo_flags_size;
uint16_t dqo_serialnum;
uint16_t dqo_serialnum_size;
uint16_t dqo_width;
uint16_t dqo_width_size;
uint16_t dqo_running;
uint16_t dqo_running_size;
LibdispatchOffsets ()
{
dqo_version = UINT16_MAX;
dqo_flags = UINT16_MAX;
dqo_serialnum = UINT16_MAX;
dqo_label = UINT16_MAX;
dqo_width = UINT16_MAX;
dqo_running = UINT16_MAX;
};
bool
IsValid ()
{
return dqo_version != UINT16_MAX;
}
bool
LabelIsValid ()
{
return dqo_label != UINT16_MAX;
}
};
// The libBacktraceRecording function __introspection_dispatch_queue_get_pending_items has
// two forms. It can either return a simple array of item_refs (void *) size or it can return
// a header with uint32_t version, a uint32_t size of item, and then an array of item_refs (void*)
// and code addresses (void*) for all the pending blocks.
struct ItemRefAndCodeAddress {
lldb::addr_t item_ref;
lldb::addr_t code_address;
};
struct PendingItemsForQueue {
bool new_style; // new-style means both item_refs and code_addresses avail
// old-style means only item_refs is filled in
std::vector<ItemRefAndCodeAddress> item_refs_and_code_addresses;
};
bool
BacktraceRecordingHeadersInitialized ();
void
ReadLibdispatchOffsetsAddress();
void
ReadLibdispatchOffsets ();
PendingItemsForQueue
GetPendingItemRefsForQueue (lldb::addr_t queue);
ItemInfo
ExtractItemInfoFromBuffer (lldb_private::DataExtractor &extractor);
lldb_private::AppleGetQueuesHandler m_get_queues_handler;
lldb_private::AppleGetPendingItemsHandler m_get_pending_items_handler;
lldb_private::AppleGetItemInfoHandler m_get_item_info_handler;
lldb_private::AppleGetThreadItemInfoHandler m_get_thread_item_info_handler;
lldb::addr_t m_page_to_free;
uint64_t m_page_to_free_size;
libBacktraceRecording_info m_lib_backtrace_recording_info;
lldb::addr_t m_dispatch_queue_offsets_addr;
struct LibdispatchOffsets m_libdispatch_offsets;
DISALLOW_COPY_AND_ASSIGN (SystemRuntimeMacOSX);
};
#endif // liblldb_SystemRuntimeMacOSX_h_
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