56d9a1b31b
plug-ins are add on plug-ins for the lldb_private::Process class that can add thread contexts that are read from memory. It is common in kernels to have a lot of threads that are not currently executing on any cores (JTAG debugging also follows this sort of thing) and are context switched out whose state is stored in memory data structures. Clients can now subclass the OperatingSystem plug-ins and then make sure their Create functions correcltly only enable themselves when the right binary/target triple are being debugged. The operating system plug-ins get a chance to attach themselves to processes just after launching or attaching and are given a lldb_private::Process object pointer which can be inspected to see if the main executable, target triple, or any shared libraries match a case where the OS plug-in should be used. Currently the OS plug-ins can create new threads, define the register contexts for these threads (which can all be different if desired), and populate and manage the thread info (stop reason, registers in the register context) as the debug session goes on. llvm-svn: 138228
110 lines
2.3 KiB
C++
110 lines
2.3 KiB
C++
//===-- ThreadKDP.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_ThreadKDP_h_
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#define liblldb_ThreadKDP_h_
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#include <string>
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#include "lldb/Target/Process.h"
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#include "lldb/Target/Thread.h"
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class ProcessKDP;
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class ThreadKDP : public lldb_private::Thread
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{
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public:
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ThreadKDP (ProcessKDP &process,
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lldb::tid_t tid);
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virtual
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~ThreadKDP ();
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virtual bool
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WillResume (lldb::StateType resume_state);
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virtual void
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RefreshStateAfterStop();
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virtual const char *
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GetName ();
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virtual const char *
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GetQueueName ();
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virtual lldb::RegisterContextSP
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GetRegisterContext ();
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virtual lldb::RegisterContextSP
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CreateRegisterContextForFrame (lldb_private::StackFrame *frame);
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virtual void
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ClearStackFrames ();
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ProcessKDP &
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GetKDPProcess ()
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{
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return (ProcessKDP &)m_process;
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}
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void
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Dump (lldb_private::Log *log, uint32_t index);
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static bool
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ThreadIDIsValid (lldb::tid_t thread);
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bool
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ShouldStop (bool &step_more);
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const char *
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GetBasicInfoAsString ();
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void
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SetName (const char *name)
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{
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if (name && name[0])
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m_thread_name.assign (name);
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else
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m_thread_name.clear();
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}
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lldb::addr_t
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GetThreadDispatchQAddr ()
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{
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return m_thread_dispatch_qaddr;
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}
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void
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SetThreadDispatchQAddr (lldb::addr_t thread_dispatch_qaddr)
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{
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m_thread_dispatch_qaddr = thread_dispatch_qaddr;
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}
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protected:
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friend class ProcessKDP;
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//------------------------------------------------------------------
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// Member variables.
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//------------------------------------------------------------------
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std::string m_thread_name;
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std::string m_dispatch_queue_name;
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lldb::addr_t m_thread_dispatch_qaddr;
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//------------------------------------------------------------------
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// Member variables.
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//------------------------------------------------------------------
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virtual lldb::StopInfoSP
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GetPrivateStopReason ();
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};
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#endif // liblldb_ThreadKDP_h_
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