b4892cd266
the SystemRuntime to check if a thread will have any problems performing an inferior function call so the driver can skip making that function call on that thread. Often the function call can be executed on another thread instead. <rdar://problem/16777874> llvm-svn: 208732
249 lines
7.6 KiB
C++
249 lines
7.6 KiB
C++
//===-- SystemRuntimeMacOSX.h -----------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef liblldb_SystemRuntimeMacOSX_h_
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#define liblldb_SystemRuntimeMacOSX_h_
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// C Includes
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// C++ Includes
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#include <map>
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#include <vector>
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#include <string>
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// Other libraries and framework includes
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#include "lldb/Target/SystemRuntime.h"
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#include "lldb/Host/FileSpec.h"
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#include "lldb/Core/ConstString.h"
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#include "lldb/Core/ModuleList.h"
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#include "lldb/Core/UUID.h"
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#include "lldb/Host/Mutex.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/QueueItem.h"
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#include "AppleGetItemInfoHandler.h"
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#include "AppleGetQueuesHandler.h"
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#include "AppleGetPendingItemsHandler.h"
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#include "AppleGetThreadItemInfoHandler.h"
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class SystemRuntimeMacOSX : public lldb_private::SystemRuntime
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{
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public:
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//------------------------------------------------------------------
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// Static Functions
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//------------------------------------------------------------------
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static void
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Initialize();
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static void
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Terminate();
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static lldb_private::ConstString
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GetPluginNameStatic();
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static const char *
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GetPluginDescriptionStatic();
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static lldb_private::SystemRuntime *
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CreateInstance (lldb_private::Process *process);
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//------------------------------------------------------------------
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// instance methods
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//------------------------------------------------------------------
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SystemRuntimeMacOSX (lldb_private::Process *process);
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virtual
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~SystemRuntimeMacOSX ();
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void
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Clear (bool clear_process);
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void
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Detach ();
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const std::vector<lldb_private::ConstString> &
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GetExtendedBacktraceTypes ();
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lldb::ThreadSP
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GetExtendedBacktraceThread (lldb::ThreadSP thread, lldb_private::ConstString type);
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lldb::ThreadSP
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GetExtendedBacktraceForQueueItem (lldb::QueueItemSP queue_item_sp, lldb_private::ConstString type);
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lldb::ThreadSP
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GetExtendedBacktraceFromItemRef (lldb::addr_t item_ref);
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void
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PopulateQueueList (lldb_private::QueueList &queue_list);
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void
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PopulateQueuesUsingLibBTR (lldb::addr_t queues_buffer, uint64_t queues_buffer_size, uint64_t count, lldb_private::QueueList &queue_list);
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void
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PopulatePendingQueuesUsingLibBTR (lldb::addr_t items_buffer, uint64_t items_buffer_size, uint64_t count, lldb_private::Queue *queue);
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std::string
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GetQueueNameFromThreadQAddress (lldb::addr_t dispatch_qaddr);
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lldb::queue_id_t
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GetQueueIDFromThreadQAddress (lldb::addr_t dispatch_qaddr);
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lldb::addr_t
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GetLibdispatchQueueAddressFromThreadQAddress (lldb::addr_t dispatch_qaddr);
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void
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PopulatePendingItemsForQueue (lldb_private::Queue *queue);
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void
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CompleteQueueItem (lldb_private::QueueItem *queue_item, lldb::addr_t item_ref);
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virtual lldb::QueueKind
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GetQueueKind (lldb::addr_t dispatch_queue_addr);
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virtual bool
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SafeToCallFunctionsOnThisThread (lldb::ThreadSP thread_sp);
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//------------------------------------------------------------------
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// PluginInterface protocol
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//------------------------------------------------------------------
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virtual lldb_private::ConstString
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GetPluginName();
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virtual uint32_t
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GetPluginVersion();
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protected:
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lldb::user_id_t m_break_id;
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mutable lldb_private::Mutex m_mutex;
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private:
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struct libBacktraceRecording_info {
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uint16_t queue_info_version;
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uint16_t queue_info_data_offset;
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uint16_t item_info_version;
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uint16_t item_info_data_offset;
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libBacktraceRecording_info () :
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queue_info_version(0),
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queue_info_data_offset(0),
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item_info_version(0),
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item_info_data_offset(0) {}
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};
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// A structure which reflects the data recorded in the
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// libBacktraceRecording introspection_dispatch_item_info_s.
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struct ItemInfo {
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lldb::addr_t item_that_enqueued_this;
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lldb::addr_t function_or_block;
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uint64_t enqueuing_thread_id;
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uint64_t enqueuing_queue_serialnum;
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uint64_t target_queue_serialnum;
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uint32_t enqueuing_callstack_frame_count;
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uint32_t stop_id;
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std::vector<lldb::addr_t> enqueuing_callstack;
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std::string enqueuing_thread_label;
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std::string enqueuing_queue_label;
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std::string target_queue_label;
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};
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// The offsets of different fields of the dispatch_queue_t structure in
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// a thread/queue process.
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// Based on libdispatch src/queue_private.h, struct dispatch_queue_offsets_s
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// With dqo_version 1-3, the dqo_label field is a per-queue value and cannot be cached.
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// With dqo_version 4 (Mac OS X 10.9 / iOS 7), dqo_label is a constant value that can be cached.
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struct LibdispatchOffsets
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{
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uint16_t dqo_version;
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uint16_t dqo_label;
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uint16_t dqo_label_size;
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uint16_t dqo_flags;
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uint16_t dqo_flags_size;
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uint16_t dqo_serialnum;
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uint16_t dqo_serialnum_size;
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uint16_t dqo_width;
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uint16_t dqo_width_size;
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uint16_t dqo_running;
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uint16_t dqo_running_size;
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LibdispatchOffsets ()
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{
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dqo_version = UINT16_MAX;
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dqo_flags = UINT16_MAX;
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dqo_serialnum = UINT16_MAX;
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dqo_label = UINT16_MAX;
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dqo_width = UINT16_MAX;
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dqo_running = UINT16_MAX;
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};
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bool
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IsValid ()
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{
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return dqo_version != UINT16_MAX;
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}
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bool
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LabelIsValid ()
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{
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return dqo_label != UINT16_MAX;
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}
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};
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// The libBacktraceRecording function __introspection_dispatch_queue_get_pending_items has
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// two forms. It can either return a simple array of item_refs (void *) size or it can return
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// a header with uint32_t version, a uint32_t size of item, and then an array of item_refs (void*)
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// and code addresses (void*) for all the pending blocks.
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struct ItemRefAndCodeAddress {
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lldb::addr_t item_ref;
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lldb::addr_t code_address;
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};
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struct PendingItemsForQueue {
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bool new_style; // new-style means both item_refs and code_addresses avail
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// old-style means only item_refs is filled in
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std::vector<ItemRefAndCodeAddress> item_refs_and_code_addresses;
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};
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bool
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BacktraceRecordingHeadersInitialized ();
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void
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ReadLibdispatchOffsetsAddress();
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void
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ReadLibdispatchOffsets ();
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PendingItemsForQueue
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GetPendingItemRefsForQueue (lldb::addr_t queue);
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ItemInfo
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ExtractItemInfoFromBuffer (lldb_private::DataExtractor &extractor);
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lldb_private::AppleGetQueuesHandler m_get_queues_handler;
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lldb_private::AppleGetPendingItemsHandler m_get_pending_items_handler;
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lldb_private::AppleGetItemInfoHandler m_get_item_info_handler;
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lldb_private::AppleGetThreadItemInfoHandler m_get_thread_item_info_handler;
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lldb::addr_t m_page_to_free;
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uint64_t m_page_to_free_size;
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libBacktraceRecording_info m_lib_backtrace_recording_info;
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lldb::addr_t m_dispatch_queue_offsets_addr;
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struct LibdispatchOffsets m_libdispatch_offsets;
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DISALLOW_COPY_AND_ASSIGN (SystemRuntimeMacOSX);
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};
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#endif // liblldb_SystemRuntimeMacOSX_h_
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