The core of this change is the new CommandInterpreter::m_command_state, which models the state transitions for interactive commands, including an "interrupted" state transition. In general, command interruption requires cooperation from the code executing the command, which needs to poll for interruption requests through CommandInterpreter::WasInterrupted(). CommandInterpreter::PrintCommandOutput() implements an optionally interruptible printing of the command output, which for large outputs was likely the longest blocking part. (ex. target modules dump symtab on a complex binary could take 10+ minutes) Differential Revision: https://reviews.llvm.org/D37923 llvm-svn: 315037
221 lines
5.6 KiB
C++
221 lines
5.6 KiB
C++
//===-- SWIG Interface for SBCommandInterpreter -----------------*- 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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namespace lldb {
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%feature("docstring",
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"SBCommandInterpreterRunOptions controls how the RunCommandInterpreter runs the code it is fed.
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A default SBCommandInterpreterRunOptions object has:
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StopOnContinue: false
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StopOnError: false
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StopOnCrash: false
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EchoCommands: true
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PrintResults: true
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AddToHistory: true
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") SBCommandInterpreterRunOptions;
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class SBCommandInterpreterRunOptions
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{
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friend class SBDebugger;
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public:
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SBCommandInterpreterRunOptions();
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~SBCommandInterpreterRunOptions();
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bool
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GetStopOnContinue () const;
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void
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SetStopOnContinue (bool);
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bool
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GetStopOnError () const;
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void
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SetStopOnError (bool);
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bool
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GetStopOnCrash () const;
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void
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SetStopOnCrash (bool);
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bool
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GetEchoCommands () const;
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void
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SetEchoCommands (bool);
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bool
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GetPrintResults () const;
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void
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SetPrintResults (bool);
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bool
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GetAddToHistory () const;
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void
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SetAddToHistory (bool);
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private:
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lldb_private::CommandInterpreterRunOptions *
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get () const;
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lldb_private::CommandInterpreterRunOptions &
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ref () const;
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// This is set in the constructor and will always be valid.
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mutable std::unique_ptr<lldb_private::CommandInterpreterRunOptions> m_opaque_up;
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};
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%feature("docstring",
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"SBCommandInterpreter handles/interprets commands for lldb. You get the
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command interpreter from the SBDebugger instance. For example (from test/
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python_api/interpreter/TestCommandInterpreterAPI.py),
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def command_interpreter_api(self):
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'''Test the SBCommandInterpreter APIs.'''
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exe = os.path.join(os.getcwd(), 'a.out')
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Retrieve the associated command interpreter from our debugger.
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ci = self.dbg.GetCommandInterpreter()
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self.assertTrue(ci, VALID_COMMAND_INTERPRETER)
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# Exercise some APIs....
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self.assertTrue(ci.HasCommands())
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self.assertTrue(ci.HasAliases())
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self.assertTrue(ci.HasAliasOptions())
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self.assertTrue(ci.CommandExists('breakpoint'))
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self.assertTrue(ci.CommandExists('target'))
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self.assertTrue(ci.CommandExists('platform'))
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self.assertTrue(ci.AliasExists('file'))
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self.assertTrue(ci.AliasExists('run'))
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self.assertTrue(ci.AliasExists('bt'))
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res = lldb.SBCommandReturnObject()
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ci.HandleCommand('breakpoint set -f main.c -l %d' % self.line, res)
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self.assertTrue(res.Succeeded())
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ci.HandleCommand('process launch', res)
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self.assertTrue(res.Succeeded())
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process = ci.GetProcess()
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self.assertTrue(process)
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...
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The HandleCommand() instance method takes two args: the command string and
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an SBCommandReturnObject instance which encapsulates the result of command
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execution.
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") SBCommandInterpreter;
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class SBCommandInterpreter
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{
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public:
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enum
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{
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eBroadcastBitThreadShouldExit = (1 << 0),
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eBroadcastBitResetPrompt = (1 << 1),
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eBroadcastBitQuitCommandReceived = (1 << 2), // User entered quit
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eBroadcastBitAsynchronousOutputData = (1 << 3),
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eBroadcastBitAsynchronousErrorData = (1 << 4)
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};
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SBCommandInterpreter (const lldb::SBCommandInterpreter &rhs);
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~SBCommandInterpreter ();
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static const char *
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GetArgumentTypeAsCString (const lldb::CommandArgumentType arg_type);
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static const char *
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GetArgumentDescriptionAsCString (const lldb::CommandArgumentType arg_type);
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static bool
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EventIsCommandInterpreterEvent (const lldb::SBEvent &event);
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bool
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IsValid() const;
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const char *
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GetIOHandlerControlSequence(char ch);
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bool
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GetPromptOnQuit();
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void
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SetPromptOnQuit(bool b);
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void
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ResolveCommand(const char *command_line, SBCommandReturnObject &result);
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bool
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CommandExists (const char *cmd);
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bool
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AliasExists (const char *cmd);
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lldb::SBBroadcaster
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GetBroadcaster ();
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static const char *
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GetBroadcasterClass ();
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bool
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HasCommands ();
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bool
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HasAliases ();
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bool
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HasAliasOptions ();
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lldb::SBProcess
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GetProcess ();
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lldb::SBDebugger
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GetDebugger ();
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void
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SourceInitFileInHomeDirectory (lldb::SBCommandReturnObject &result);
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void
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SourceInitFileInCurrentWorkingDirectory (lldb::SBCommandReturnObject &result);
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lldb::ReturnStatus
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HandleCommand (const char *command_line, lldb::SBCommandReturnObject &result, bool add_to_history = false);
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lldb::ReturnStatus
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HandleCommand (const char *command_line, SBExecutionContext &exe_ctx, SBCommandReturnObject &result, bool add_to_history = false);
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void
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HandleCommandsFromFile (lldb::SBFileSpec &file,
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lldb::SBExecutionContext &override_context,
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lldb::SBCommandInterpreterRunOptions &options,
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lldb::SBCommandReturnObject result);
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int
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HandleCompletion (const char *current_line,
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uint32_t cursor_pos,
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int match_start_point,
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int max_return_elements,
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lldb::SBStringList &matches);
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bool
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IsActive ();
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bool
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WasInterrupted () const;
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};
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} // namespace lldb
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