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//===-- CommandObjectProcess.cpp --------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "CommandObjectProcess.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/Core/Args.h"
#include "lldb/Core/Options.h"
#include "lldb/Core/State.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Interpreter/CommandReturnObject.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
using namespace lldb;
using namespace lldb_private;
//-------------------------------------------------------------------------
// CommandObjectProcessLaunch
//-------------------------------------------------------------------------
class CommandObjectProcessLaunch : public CommandObject
{
public:
class CommandOptions : public Options
{
public:
CommandOptions () :
Options()
{
// Keep default values of all options in one place: ResetOptionValues ()
ResetOptionValues ();
}
~CommandOptions ()
{
}
Error
SetOptionValue (int option_idx, const char *option_arg)
{
Error error;
char short_option = (char) m_getopt_table[option_idx].val;
switch (short_option)
{
case 's': stop_at_entry = true; break;
case 'e': stderr_path = option_arg; break;
case 'i': stdin_path = option_arg; break;
case 'o': stdout_path = option_arg; break;
case 'p': plugin_name = option_arg; break;
default:
error.SetErrorStringWithFormat("Invalid short option character '%c'.\n", short_option);
break;
}
return error;
}
void
ResetOptionValues ()
{
Options::ResetOptionValues();
stop_at_entry = false;
stdin_path.clear();
stdout_path.clear();
stderr_path.clear();
plugin_name.clear();
}
const lldb::OptionDefinition*
GetDefinitions ()
{
return g_option_table;
}
// Options table: Required for subclasses of Options.
static lldb::OptionDefinition g_option_table[];
// Instance variables to hold the values for command options.
bool stop_at_entry;
std::string stderr_path;
std::string stdin_path;
std::string stdout_path;
std::string plugin_name;
};
CommandObjectProcessLaunch () :
CommandObject ("process launch",
"Launches the executable in the debugger.",
"process launch [<cmd-options>] [<arguments-for-running-the-program>]")
{
}
~CommandObjectProcessLaunch ()
{
}
Options *
GetOptions ()
{
return &m_options;
}
bool
Execute (Args& launch_args,
CommandContext *context,
CommandInterpreter *interpreter,
CommandReturnObject &result)
{
Target *target = context->GetTarget();
bool synchronous_execution = interpreter->GetSynchronous ();
// bool launched = false;
// bool stopped_after_launch = false;
if (target == NULL)
{
result.AppendError ("invalid target, set executable file using 'file' command");
result.SetStatus (eReturnStatusFailed);
return false;
}
// If our listener is NULL, users aren't allows to launch
Listener *listener = interpreter->GetListener();
if (listener == NULL)
{
result.AppendError ("operation not allowed through the command interpreter");
result.SetStatus (eReturnStatusFailed);
return false;
}
char filename[PATH_MAX];
Module *exe_module = target->GetExecutableModule().get();
exe_module->GetFileSpec().GetPath(filename, sizeof(filename));
Process *process = context->GetExecutionContext().process;
if (process)
{
if (process->IsAlive())
{
result.AppendErrorWithFormat ("Process %u is currently being debugged, kill the process before running again.\n",
process->GetID());
result.SetStatus (eReturnStatusFailed);
return false;
}
}
const char *plugin_name;
if (!m_options.plugin_name.empty())
plugin_name = m_options.plugin_name.c_str();
else
plugin_name = NULL;
process = target->CreateProcess (*listener, plugin_name).get();
const Args *environment = interpreter->GetEnvironmentVariables();
const Args *run_args = interpreter->GetProgramArguments();
// There are two possible sources of args to be passed to the process upon launching: Those the user
// typed at the run command (launch_args); or those the user pre-set in the run-args variable (run_args).
// If launch_args is empty, use run_args.
if (launch_args.GetArgumentCount() == 0)
{
if (run_args != NULL)
launch_args.AppendArguments (*run_args);
}
else
{
// launch-args was not empty; use that, AND re-set run-args to contains launch-args values.
StateVariable *run_args_var = interpreter->GetStateVariable ("run-args");
if (run_args_var != NULL)
{
run_args_var->ArrayClearValues();
run_args_var->GetArgs().AppendArguments (launch_args);
}
}
if (process)
{
const char *archname = exe_module->GetArchitecture().AsCString();
const char * stdin_path = NULL;
const char * stdout_path = NULL;
const char * stderr_path = NULL;
if (!(m_options.stdin_path.empty() &&
m_options.stdout_path.empty() &&
m_options.stderr_path.empty()))
{
stdin_path = m_options.stdin_path.empty() ? "/dev/null" : m_options.stdin_path.c_str();
stdout_path = m_options.stdout_path.empty() ? "/dev/null" : m_options.stdout_path.c_str();
stderr_path = m_options.stderr_path.empty() ? "/dev/null" : m_options.stderr_path.c_str();
}
Error error (process->Launch (launch_args.GetConstArgumentVector(),
environment ? environment->GetConstArgumentVector() : NULL,
stdin_path,
stdout_path,
stderr_path));
if (error.Success())
{
result.AppendMessageWithFormat ("Launching '%s' (%s)\n", filename, archname);
result.SetStatus (eReturnStatusSuccessContinuingNoResult);
if (m_options.stop_at_entry == false)
{
StateType state = process->WaitForProcessToStop (NULL);
if (state == eStateStopped)
{
// Call continue_command.
CommandReturnObject continue_result;
interpreter->HandleCommand("process continue", false, continue_result);
}
if (synchronous_execution)
{
result.SetDidChangeProcessState (true);
result.SetStatus (eReturnStatusSuccessFinishNoResult);
}
}
}
else
{
result.AppendErrorWithFormat ("Process launch failed: %s",
error.AsCString());
result.SetStatus (eReturnStatusFailed);
}
}
else
{
result.AppendErrorWithFormat ("Process launch failed: unable to create a process object.\n");
result.SetStatus (eReturnStatusFailed);
return false;
}
return result.Succeeded();
}
protected:
CommandOptions m_options;
};
lldb::OptionDefinition
CommandObjectProcessLaunch::CommandOptions::g_option_table[] =
{
{ 0, false, "stop-at-entry", 's', no_argument, NULL, 0, NULL, "Stop at the entry point of the program when launching a process."},
{ 0, false, "stdin", 'i', required_argument, NULL, 0, "<path>", "Redirect stdin for the process to <path>."},
{ 0, false, "stdout", 'o', required_argument, NULL, 0, "<path>", "Redirect stdout for the process to <path>."},
{ 0, false, "stderr", 'e', required_argument, NULL, 0, "<path>", "Redirect stderr for the process to <path>."},
{ 0, false, "plugin", 'p', required_argument, NULL, 0, "<plugin>", "Name of the process plugin you want to use."},
{ 0, false, NULL, 0, 0, NULL, 0, NULL, NULL }
};
//-------------------------------------------------------------------------
// CommandObjectProcessAttach
//-------------------------------------------------------------------------
class CommandObjectProcessAttach : public CommandObject
{
public:
CommandObjectProcessAttach () :
CommandObject ("process attach",
"Attaches to a process.",
"process attach <cmd-options>")
{
SetHelpLong("Currently, you must set the executable file before you can attach "
"to a process.\n");
}
~CommandObjectProcessAttach ()
{
}
bool
Execute (Args& command,
CommandContext *context,
CommandInterpreter *interpreter,
CommandReturnObject &result)
{
Target *target = context->GetTarget();
if (target == NULL)
{
result.AppendError ("invalid target, set executable file using 'file' command");
result.SetStatus (eReturnStatusFailed);
return false;
}
// If our listener is NULL, users aren't allows to launch
Listener *listener = interpreter->GetListener();
if (listener == NULL)
{
result.AppendError ("operation not allowed through the command interpreter");
result.SetStatus (eReturnStatusFailed);
return false;
}
Process *process = context->GetExecutionContext().process;
if (process)
{
if (process->IsAlive())
{
result.AppendErrorWithFormat ("Process %u is currently being debugged, kill the process before attaching.\n", process->GetID());
result.SetStatus (eReturnStatusFailed);
return false;
}
}
if (command.GetArgumentCount())
{
result.AppendErrorWithFormat("Invalid arguments for '%s'.\nUsage: \n", m_cmd_name.c_str(), m_cmd_syntax.c_str());
result.SetStatus (eReturnStatusFailed);
}
else
{
const char *plugin_name = NULL;
if (!m_options.plugin_name.empty())
plugin_name = m_options.plugin_name.c_str();
process = target->CreateProcess (*listener, plugin_name).get();
if (process)
{
Error error;
int attach_pid = m_options.pid;
if (attach_pid != LLDB_INVALID_PROCESS_ID)
{
error = process->Attach (attach_pid);
if (error.Success())
{
result.SetStatus (eReturnStatusSuccessContinuingNoResult);
}
else
{
result.AppendErrorWithFormat ("Attaching to process %i failed: %s.\n",
attach_pid,
error.AsCString());
result.SetStatus (eReturnStatusFailed);
}
}
else if (!m_options.name.empty())
{
error = process->Attach (m_options.name.c_str(), m_options.waitfor);
if (error.Success())
{
result.SetStatus (eReturnStatusSuccessContinuingNoResult);
}
else
{
if (m_options.waitfor)
result.AppendErrorWithFormat ("Waiting for a process to launch named '%s': %s\n",
m_options.name.c_str(),
error.AsCString());
else
result.AppendErrorWithFormat ("Failed to a process named '%s': %s\n",
m_options.name.c_str(),
error.AsCString());
result.SetStatus (eReturnStatusFailed);
}
}
}
}
return result.Succeeded();
}
Options *
GetOptions ()
{
return &m_options;
}
class CommandOptions : public Options
{
public:
CommandOptions () :
Options()
{
// Keep default values of all options in one place: ResetOptionValues ()
ResetOptionValues ();
}
~CommandOptions ()
{
}
Error
SetOptionValue (int option_idx, const char *option_arg)
{
Error error;
char short_option = (char) m_getopt_table[option_idx].val;
bool success = false;
switch (short_option)
{
case 'p':
pid = Args::StringToUInt32 (option_arg, LLDB_INVALID_PROCESS_ID, 0, &success);
if (!success || pid == LLDB_INVALID_PROCESS_ID)
{
error.SetErrorStringWithFormat("Invalid process ID '%s'.\n", option_arg);
}
break;
case 'P':
plugin_name = option_arg;
break;
case 'n':
name.assign(option_arg);
break;
case 'w':
waitfor = true;
break;
default:
error.SetErrorStringWithFormat("Invalid short option character '%c'.\n", short_option);
break;
}
return error;
}
void
ResetOptionValues ()
{
Options::ResetOptionValues();
pid = LLDB_INVALID_PROCESS_ID;
name.clear();
waitfor = false;
}
const lldb::OptionDefinition*
GetDefinitions ()
{
return g_option_table;
}
// Options table: Required for subclasses of Options.
static lldb::OptionDefinition g_option_table[];
// Instance variables to hold the values for command options.
lldb::pid_t pid;
std::string plugin_name;
std::string name;
bool waitfor;
};
protected:
CommandOptions m_options;
};
lldb::OptionDefinition
CommandObjectProcessAttach::CommandOptions::g_option_table[] =
{
{ 0, false, "pid", 'p', required_argument, NULL, 0, "<pid>", "The process ID of an existing process to attach to."},
{ 0, false, "plugin", 'P', required_argument, NULL, 0, "<plugin>", "Name of the process plugin you want to use."},
{ 1, true, "name", 'n', required_argument, NULL, 0, "<process-name>", "The name of the process to attach to."},
{ 1, false, "waitfor", 'w', no_argument, NULL, 0, NULL, "Wait for the the process with <process-name> to launch."},
{ 0, false, NULL, 0, 0, NULL, 0, NULL, NULL }
};
//-------------------------------------------------------------------------
// CommandObjectProcessContinue
//-------------------------------------------------------------------------
class CommandObjectProcessContinue : public CommandObject
{
public:
CommandObjectProcessContinue () :
CommandObject ("process continue",
"Continues execution all threads in the current process.",
"process continue",
eFlagProcessMustBeLaunched | eFlagProcessMustBePaused)
{
}
~CommandObjectProcessContinue ()
{
}
bool
Execute (Args& command,
CommandContext *context,
CommandInterpreter *interpreter,
CommandReturnObject &result)
{
Process *process = context->GetExecutionContext().process;
bool synchronous_execution = interpreter->GetSynchronous ();
if (process == NULL)
{
result.AppendError ("no process to continue");
result.SetStatus (eReturnStatusFailed);
return false;
}
StateType state = process->GetState();
if (state == eStateStopped)
{
if (command.GetArgumentCount() != 0)
{
result.AppendErrorWithFormat ("The '%s' command does not take any arguments.\n", m_cmd_name.c_str());
result.SetStatus (eReturnStatusFailed);
return false;
}
const uint32_t num_threads = process->GetThreadList().GetSize();
// Set the actions that the threads should each take when resuming
for (uint32_t idx=0; idx<num_threads; ++idx)
{
process->GetThreadList().GetThreadAtIndex(idx)->SetResumeState (eStateRunning);
}
Error error(process->Resume());
if (error.Success())
{
result.AppendMessageWithFormat ("Resuming process %i\n", process->GetID());
if (synchronous_execution)
{
StateType state = process->WaitForProcessToStop (NULL);
result.SetDidChangeProcessState (true);
result.AppendMessageWithFormat ("Process %i %s\n", process->GetID(), StateAsCString (state));
result.SetStatus (eReturnStatusSuccessFinishNoResult);
}
else
{
result.SetStatus (eReturnStatusSuccessContinuingNoResult);
}
}
else
{
result.AppendErrorWithFormat("Failed to resume process: %s.\n", error.AsCString());
result.SetStatus (eReturnStatusFailed);
}
}
else
{
result.AppendErrorWithFormat ("Process cannot be continued from its current state (%s).\n",
StateAsCString(state));
result.SetStatus (eReturnStatusFailed);
}
return result.Succeeded();
}
};
//-------------------------------------------------------------------------
// CommandObjectProcessDetach
//-------------------------------------------------------------------------
class CommandObjectProcessDetach : public CommandObject
{
public:
CommandObjectProcessDetach () :
CommandObject ("process detach",
"Detaches from the current process being debugged.",
"process detach",
eFlagProcessMustBeLaunched)
{
}
~CommandObjectProcessDetach ()
{
}
bool
Execute (Args& command,
CommandContext *context,
CommandInterpreter *interpreter,
CommandReturnObject &result)
{
Process *process = context->GetExecutionContext().process;
if (process == NULL)
{
result.AppendError ("must have a valid process in order to detach");
result.SetStatus (eReturnStatusFailed);
return false;
}
Error error (process->Detach());
if (error.Success())
{
result.SetStatus (eReturnStatusSuccessFinishResult);
}
else
{
result.AppendErrorWithFormat ("Detach failed: %s\n", error.AsCString());
result.SetStatus (eReturnStatusFailed);
return false;
}
return result.Succeeded();
}
};
//-------------------------------------------------------------------------
// CommandObjectProcessSignal
//-------------------------------------------------------------------------
class CommandObjectProcessSignal : public CommandObject
{
public:
CommandObjectProcessSignal () :
CommandObject ("process signal",
"Sends a UNIX signal to the current process being debugged.",
"process signal <unix-signal-number>")
{
}
~CommandObjectProcessSignal ()
{
}
bool
Execute (Args& command,
CommandContext *context,
CommandInterpreter *interpreter,
CommandReturnObject &result)
{
Process *process = context->GetExecutionContext().process;
if (process == NULL)
{
result.AppendError ("no process to signal");
result.SetStatus (eReturnStatusFailed);
return false;
}
if (command.GetArgumentCount() == 1)
{
int signo = Args::StringToSInt32(command.GetArgumentAtIndex(0), -1, 0);
if (signo == -1)
{
result.AppendErrorWithFormat ("Invalid signal argument '%s'.\n", command.GetArgumentAtIndex(0));
result.SetStatus (eReturnStatusFailed);
}
else
{
Error error (process->Signal (signo));
if (error.Success())
{
result.SetStatus (eReturnStatusSuccessFinishResult);
}
else
{
result.AppendErrorWithFormat ("Failed to send signal %i: %s\n", signo, error.AsCString());
result.SetStatus (eReturnStatusFailed);
}
}
}
else
{
result.AppendErrorWithFormat("'%s' takes exactly one signal number argument:\nUsage: \n", m_cmd_name.c_str(),
m_cmd_syntax.c_str());
result.SetStatus (eReturnStatusFailed);
}
return result.Succeeded();
}
};
//-------------------------------------------------------------------------
// CommandObjectProcessInterrupt
//-------------------------------------------------------------------------
class CommandObjectProcessInterrupt : public CommandObject
{
public:
CommandObjectProcessInterrupt () :
CommandObject ("process interrupt",
"Interrupts the current process being debugged.",
"process interrupt",
eFlagProcessMustBeLaunched)
{
}
~CommandObjectProcessInterrupt ()
{
}
bool
Execute (Args& command,
CommandContext *context,
CommandInterpreter *interpreter,
CommandReturnObject &result)
{
Process *process = context->GetExecutionContext().process;
if (process == NULL)
{
result.AppendError ("no process to halt");
result.SetStatus (eReturnStatusFailed);
return false;
}
if (command.GetArgumentCount() == 0)
{
Error error(process->Halt ());
if (error.Success())
{
result.SetStatus (eReturnStatusSuccessFinishResult);
// Maybe we should add a "SuspendThreadPlans so we
// can halt, and keep in place all the current thread plans.
process->GetThreadList().DiscardThreadPlans();
}
else
{
result.AppendErrorWithFormat ("Failed to halt process: %s\n", error.AsCString());
result.SetStatus (eReturnStatusFailed);
}
}
else
{
result.AppendErrorWithFormat("'%s' takes no arguments:\nUsage: \n",
m_cmd_name.c_str(),
m_cmd_syntax.c_str());
result.SetStatus (eReturnStatusFailed);
}
return result.Succeeded();
}
};
//-------------------------------------------------------------------------
// CommandObjectProcessKill
//-------------------------------------------------------------------------
class CommandObjectProcessKill : public CommandObject
{
public:
CommandObjectProcessKill () :
CommandObject ("process kill",
"Terminates the current process being debugged.",
"process kill",
eFlagProcessMustBeLaunched)
{
}
~CommandObjectProcessKill ()
{
}
bool
Execute (Args& command,
CommandContext *context,
CommandInterpreter *interpreter,
CommandReturnObject &result)
{
Process *process = context->GetExecutionContext().process;
if (process == NULL)
{
result.AppendError ("no process to kill");
result.SetStatus (eReturnStatusFailed);
return false;
}
if (command.GetArgumentCount() == 0)
{
Error error (process->Destroy());
if (error.Success())
{
result.SetStatus (eReturnStatusSuccessFinishResult);
}
else
{
result.AppendErrorWithFormat ("Failed to kill process: %s\n", error.AsCString());
result.SetStatus (eReturnStatusFailed);
}
}
else
{
result.AppendErrorWithFormat("'%s' takes no arguments:\nUsage: \n",
m_cmd_name.c_str(),
m_cmd_syntax.c_str());
result.SetStatus (eReturnStatusFailed);
}
return result.Succeeded();
}
};
//-------------------------------------------------------------------------
// CommandObjectMultiwordProcess
//-------------------------------------------------------------------------
CommandObjectMultiwordProcess::CommandObjectMultiwordProcess (CommandInterpreter *interpreter) :
CommandObjectMultiword ("process",
"A set of commands for operating on a process.",
"process <subcommand> [<subcommand-options>]")
{
LoadSubCommand (CommandObjectSP (new CommandObjectProcessAttach ()), "attach", interpreter);
LoadSubCommand (CommandObjectSP (new CommandObjectProcessLaunch ()), "launch", interpreter);
LoadSubCommand (CommandObjectSP (new CommandObjectProcessContinue ()), "continue", interpreter);
LoadSubCommand (CommandObjectSP (new CommandObjectProcessDetach ()), "detach", interpreter);
LoadSubCommand (CommandObjectSP (new CommandObjectProcessSignal ()), "signal", interpreter);
LoadSubCommand (CommandObjectSP (new CommandObjectProcessInterrupt ()), "interrupt", interpreter);
LoadSubCommand (CommandObjectSP (new CommandObjectProcessKill ()), "kill", interpreter);
}
CommandObjectMultiwordProcess::~CommandObjectMultiwordProcess ()
{
}