Files
clang-p2996/lldb/scripts/interface/SBCommandInterpreter.i
Leonard Mosescu 17ffd39ed8 Implement interactive command interruption
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
2017-10-05 23:41:28 +00:00

221 lines
5.6 KiB
C++

//===-- SWIG Interface for SBCommandInterpreter -----------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
namespace lldb {
%feature("docstring",
"SBCommandInterpreterRunOptions controls how the RunCommandInterpreter runs the code it is fed.
A default SBCommandInterpreterRunOptions object has:
StopOnContinue: false
StopOnError: false
StopOnCrash: false
EchoCommands: true
PrintResults: true
AddToHistory: true
") SBCommandInterpreterRunOptions;
class SBCommandInterpreterRunOptions
{
friend class SBDebugger;
public:
SBCommandInterpreterRunOptions();
~SBCommandInterpreterRunOptions();
bool
GetStopOnContinue () const;
void
SetStopOnContinue (bool);
bool
GetStopOnError () const;
void
SetStopOnError (bool);
bool
GetStopOnCrash () const;
void
SetStopOnCrash (bool);
bool
GetEchoCommands () const;
void
SetEchoCommands (bool);
bool
GetPrintResults () const;
void
SetPrintResults (bool);
bool
GetAddToHistory () const;
void
SetAddToHistory (bool);
private:
lldb_private::CommandInterpreterRunOptions *
get () const;
lldb_private::CommandInterpreterRunOptions &
ref () const;
// This is set in the constructor and will always be valid.
mutable std::unique_ptr<lldb_private::CommandInterpreterRunOptions> m_opaque_up;
};
%feature("docstring",
"SBCommandInterpreter handles/interprets commands for lldb. You get the
command interpreter from the SBDebugger instance. For example (from test/
python_api/interpreter/TestCommandInterpreterAPI.py),
def command_interpreter_api(self):
'''Test the SBCommandInterpreter APIs.'''
exe = os.path.join(os.getcwd(), 'a.out')
# Create a target by the debugger.
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
# Retrieve the associated command interpreter from our debugger.
ci = self.dbg.GetCommandInterpreter()
self.assertTrue(ci, VALID_COMMAND_INTERPRETER)
# Exercise some APIs....
self.assertTrue(ci.HasCommands())
self.assertTrue(ci.HasAliases())
self.assertTrue(ci.HasAliasOptions())
self.assertTrue(ci.CommandExists('breakpoint'))
self.assertTrue(ci.CommandExists('target'))
self.assertTrue(ci.CommandExists('platform'))
self.assertTrue(ci.AliasExists('file'))
self.assertTrue(ci.AliasExists('run'))
self.assertTrue(ci.AliasExists('bt'))
res = lldb.SBCommandReturnObject()
ci.HandleCommand('breakpoint set -f main.c -l %d' % self.line, res)
self.assertTrue(res.Succeeded())
ci.HandleCommand('process launch', res)
self.assertTrue(res.Succeeded())
process = ci.GetProcess()
self.assertTrue(process)
...
The HandleCommand() instance method takes two args: the command string and
an SBCommandReturnObject instance which encapsulates the result of command
execution.
") SBCommandInterpreter;
class SBCommandInterpreter
{
public:
enum
{
eBroadcastBitThreadShouldExit = (1 << 0),
eBroadcastBitResetPrompt = (1 << 1),
eBroadcastBitQuitCommandReceived = (1 << 2), // User entered quit
eBroadcastBitAsynchronousOutputData = (1 << 3),
eBroadcastBitAsynchronousErrorData = (1 << 4)
};
SBCommandInterpreter (const lldb::SBCommandInterpreter &rhs);
~SBCommandInterpreter ();
static const char *
GetArgumentTypeAsCString (const lldb::CommandArgumentType arg_type);
static const char *
GetArgumentDescriptionAsCString (const lldb::CommandArgumentType arg_type);
static bool
EventIsCommandInterpreterEvent (const lldb::SBEvent &event);
bool
IsValid() const;
const char *
GetIOHandlerControlSequence(char ch);
bool
GetPromptOnQuit();
void
SetPromptOnQuit(bool b);
void
ResolveCommand(const char *command_line, SBCommandReturnObject &result);
bool
CommandExists (const char *cmd);
bool
AliasExists (const char *cmd);
lldb::SBBroadcaster
GetBroadcaster ();
static const char *
GetBroadcasterClass ();
bool
HasCommands ();
bool
HasAliases ();
bool
HasAliasOptions ();
lldb::SBProcess
GetProcess ();
lldb::SBDebugger
GetDebugger ();
void
SourceInitFileInHomeDirectory (lldb::SBCommandReturnObject &result);
void
SourceInitFileInCurrentWorkingDirectory (lldb::SBCommandReturnObject &result);
lldb::ReturnStatus
HandleCommand (const char *command_line, lldb::SBCommandReturnObject &result, bool add_to_history = false);
lldb::ReturnStatus
HandleCommand (const char *command_line, SBExecutionContext &exe_ctx, SBCommandReturnObject &result, bool add_to_history = false);
void
HandleCommandsFromFile (lldb::SBFileSpec &file,
lldb::SBExecutionContext &override_context,
lldb::SBCommandInterpreterRunOptions &options,
lldb::SBCommandReturnObject result);
int
HandleCompletion (const char *current_line,
uint32_t cursor_pos,
int match_start_point,
int max_return_elements,
lldb::SBStringList &matches);
bool
IsActive ();
bool
WasInterrupted () const;
};
} // namespace lldb