xref: /llvm-project/lldb/source/Commands/CommandObjectProcess.cpp (revision 8f343b09e946cce2ef79461b5a86d987f6a31748)
1 //===-- CommandObjectProcess.cpp --------------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "CommandObjectProcess.h"
11 
12 // C Includes
13 // C++ Includes
14 // Other libraries and framework includes
15 // Project includes
16 #include "lldb/Interpreter/Args.h"
17 #include "lldb/Interpreter/Options.h"
18 #include "lldb/Core/State.h"
19 #include "lldb/Interpreter/CommandInterpreter.h"
20 #include "lldb/Interpreter/CommandReturnObject.h"
21 #include "./CommandObjectThread.h"
22 #include "lldb/Target/Process.h"
23 #include "lldb/Target/Target.h"
24 #include "lldb/Target/Thread.h"
25 
26 using namespace lldb;
27 using namespace lldb_private;
28 
29 //-------------------------------------------------------------------------
30 // CommandObjectProcessLaunch
31 //-------------------------------------------------------------------------
32 
33 class CommandObjectProcessLaunch : public CommandObject
34 {
35 public:
36 
37     class CommandOptions : public Options
38     {
39     public:
40 
41         CommandOptions () :
42             Options()
43         {
44             // Keep default values of all options in one place: ResetOptionValues ()
45             ResetOptionValues ();
46         }
47 
48         ~CommandOptions ()
49         {
50         }
51 
52         Error
53         SetOptionValue (int option_idx, const char *option_arg)
54         {
55             Error error;
56             char short_option = (char) m_getopt_table[option_idx].val;
57 
58             switch (short_option)
59             {
60                 case 's':   stop_at_entry = true;       break;
61                 case 'e':   stderr_path = option_arg;   break;
62                 case 'i':   stdin_path  = option_arg;   break;
63                 case 'o':   stdout_path = option_arg;   break;
64                 case 'p':   plugin_name = option_arg;   break;
65                 case 't':
66                     if (option_arg && option_arg[0])
67                         tty_name.assign (option_arg);
68                     in_new_tty = true;
69                     break;
70                 default:
71                     error.SetErrorStringWithFormat("Invalid short option character '%c'.\n", short_option);
72                     break;
73 
74             }
75             return error;
76         }
77 
78         void
79         ResetOptionValues ()
80         {
81             Options::ResetOptionValues();
82             stop_at_entry = false;
83             in_new_tty = false;
84             tty_name.clear();
85             stdin_path.clear();
86             stdout_path.clear();
87             stderr_path.clear();
88             plugin_name.clear();
89         }
90 
91         const lldb::OptionDefinition*
92         GetDefinitions ()
93         {
94             return g_option_table;
95         }
96 
97         // Options table: Required for subclasses of Options.
98 
99         static lldb::OptionDefinition g_option_table[];
100 
101         // Instance variables to hold the values for command options.
102 
103         bool stop_at_entry;
104         bool in_new_tty;
105         std::string tty_name;
106         std::string stderr_path;
107         std::string stdin_path;
108         std::string stdout_path;
109         std::string plugin_name;
110 
111     };
112 
113     CommandObjectProcessLaunch (CommandInterpreter &interpreter) :
114         CommandObject (interpreter,
115                        "process launch",
116                        "Launch the executable in the debugger.",
117                        NULL)
118     {
119         CommandArgumentEntry arg;
120         CommandArgumentData run_args_arg;
121 
122         // Define the first (and only) variant of this arg.
123         run_args_arg.arg_type = eArgTypeRunArgs;
124         run_args_arg.arg_repetition = eArgRepeatOptional;
125 
126         // There is only one variant this argument could be; put it into the argument entry.
127         arg.push_back (run_args_arg);
128 
129         // Push the data for the first argument into the m_arguments vector.
130         m_arguments.push_back (arg);
131     }
132 
133 
134     ~CommandObjectProcessLaunch ()
135     {
136     }
137 
138     Options *
139     GetOptions ()
140     {
141         return &m_options;
142     }
143 
144     bool
145     Execute (Args& launch_args, CommandReturnObject &result)
146     {
147         Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
148 
149         if (target == NULL)
150         {
151             result.AppendError ("invalid target, set executable file using 'file' command");
152             result.SetStatus (eReturnStatusFailed);
153             return false;
154         }
155 
156         // If our listener is NULL, users aren't allows to launch
157         char filename[PATH_MAX];
158         const Module *exe_module = target->GetExecutableModule().get();
159         exe_module->GetFileSpec().GetPath(filename, sizeof(filename));
160 
161         Process *process = m_interpreter.GetDebugger().GetExecutionContext().process;
162         if (process && process->IsAlive())
163         {
164             result.AppendErrorWithFormat ("Process %u is currently being debugged, kill the process before running again.\n",
165                                           process->GetID());
166             result.SetStatus (eReturnStatusFailed);
167             return false;
168         }
169 
170         const char *plugin_name;
171         if (!m_options.plugin_name.empty())
172             plugin_name = m_options.plugin_name.c_str();
173         else
174             plugin_name = NULL;
175 
176         process = target->CreateProcess (m_interpreter.GetDebugger().GetListener(), plugin_name).get();
177 
178         if (process == NULL)
179         {
180             result.AppendErrorWithFormat ("Failed to find a process plugin for executable.\n");
181             result.SetStatus (eReturnStatusFailed);
182             return false;
183         }
184 
185         // If no launch args were given on the command line, then use any that
186         // might have been set using the "run-args" set variable.
187         if (launch_args.GetArgumentCount() == 0)
188         {
189             if (process->GetRunArguments().GetArgumentCount() > 0)
190                 launch_args = process->GetRunArguments();
191         }
192 
193         if (m_options.in_new_tty)
194         {
195             char exec_file_path[PATH_MAX];
196             if (exe_module->GetFileSpec().GetPath(exec_file_path, sizeof(exec_file_path)))
197             {
198                 launch_args.InsertArgumentAtIndex(0, exec_file_path);
199             }
200             else
201             {
202                 result.AppendError("invalid executable");
203                 result.SetStatus (eReturnStatusFailed);
204                 return false;
205             }
206         }
207 
208         Args environment;
209 
210         process->GetEnvironmentAsArgs (environment);
211 
212         uint32_t launch_flags = eLaunchFlagNone;
213 
214         if (process->GetDisableASLR())
215             launch_flags |= eLaunchFlagDisableASLR;
216 
217         const char **inferior_argv = launch_args.GetArgumentCount() ? launch_args.GetConstArgumentVector() : NULL;
218         const char **inferior_envp = environment.GetArgumentCount() ? environment.GetConstArgumentVector() : NULL;
219 
220         Error error;
221 
222         if (m_options.in_new_tty)
223         {
224 
225             lldb::pid_t pid = Host::LaunchInNewTerminal (m_options.tty_name.c_str(),
226                                                          inferior_argv,
227                                                          inferior_envp,
228                                                          &exe_module->GetArchitecture(),
229                                                          true,
230                                                          process->GetDisableASLR());
231 
232             if (pid != LLDB_INVALID_PROCESS_ID)
233                 error = process->Attach (pid);
234         }
235         else
236         {
237             const char * stdin_path = NULL;
238             const char * stdout_path = NULL;
239             const char * stderr_path = NULL;
240 
241             // Were any standard input/output/error paths given on the command line?
242             if (m_options.stdin_path.empty() &&
243                 m_options.stdout_path.empty() &&
244                 m_options.stderr_path.empty())
245             {
246                 // No standard file handles were given on the command line, check
247                 // with the process object in case they were give using "set settings"
248                 stdin_path = process->GetStandardInputPath();
249                 stdout_path = process->GetStandardOutputPath();
250                 stderr_path = process->GetStandardErrorPath();
251             }
252             else
253             {
254                 stdin_path = m_options.stdin_path.empty()  ? NULL : m_options.stdin_path.c_str();
255                 stdout_path = m_options.stdout_path.empty() ? NULL : m_options.stdout_path.c_str();
256                 stderr_path = m_options.stderr_path.empty() ? NULL : m_options.stderr_path.c_str();
257             }
258 
259             if (stdin_path == NULL)
260                 stdin_path = "/dev/null";
261             if (stdout_path == NULL)
262                 stdout_path = "/dev/null";
263             if (stderr_path == NULL)
264                 stderr_path = "/dev/null";
265 
266             error = process->Launch (inferior_argv,
267                                      inferior_envp,
268                                      launch_flags,
269                                      stdin_path,
270                                      stdout_path,
271                                      stderr_path);
272         }
273 
274         if (error.Success())
275         {
276             const char *archname = exe_module->GetArchitecture().AsCString();
277 
278             result.AppendMessageWithFormat ("Process %i launched: '%s' (%s)\n", process->GetID(), filename, archname);
279             result.SetDidChangeProcessState (true);
280             if (m_options.stop_at_entry == false)
281             {
282                 result.SetStatus (eReturnStatusSuccessContinuingNoResult);
283                 StateType state = process->WaitForProcessToStop (NULL);
284 
285                 if (state == eStateStopped)
286                 {
287                     error = process->Resume();
288                     if (error.Success())
289                     {
290                         bool synchronous_execution = m_interpreter.GetSynchronous ();
291                         if (synchronous_execution)
292                         {
293                             state = process->WaitForProcessToStop (NULL);
294                             result.SetDidChangeProcessState (true);
295                             result.SetStatus (eReturnStatusSuccessFinishResult);
296                         }
297                         else
298                         {
299                             result.SetStatus (eReturnStatusSuccessContinuingNoResult);
300                         }
301                     }
302                 }
303             }
304         }
305 
306         return result.Succeeded();
307     }
308 
309     virtual const char *GetRepeatCommand (Args &current_command_args, uint32_t index)
310     {
311         // No repeat for "process launch"...
312         return "";
313     }
314 
315 protected:
316 
317     CommandOptions m_options;
318 };
319 
320 
321 #define SET1 LLDB_OPT_SET_1
322 #define SET2 LLDB_OPT_SET_2
323 
324 lldb::OptionDefinition
325 CommandObjectProcessLaunch::CommandOptions::g_option_table[] =
326 {
327 { SET1 | SET2, false, "stop-at-entry", 's', no_argument,       NULL, 0, eArgTypeNone,    "Stop at the entry point of the program when launching a process."},
328 { SET1       , false, "stdin",         'i', required_argument, NULL, 0, eArgTypePath,    "Redirect stdin for the process to <path>."},
329 { SET1       , false, "stdout",        'o', required_argument, NULL, 0, eArgTypePath,    "Redirect stdout for the process to <path>."},
330 { SET1       , false, "stderr",        'e', required_argument, NULL, 0, eArgTypePath,    "Redirect stderr for the process to <path>."},
331 { SET1 | SET2, false, "plugin",        'p', required_argument, NULL, 0, eArgTypePlugin,  "Name of the process plugin you want to use."},
332 {        SET2, false, "tty",           't', optional_argument, NULL, 0, eArgTypePath,    "Start the process in a terminal. If <path> is specified, look for a terminal whose name contains <path>, else start the process in a new terminal."},
333 { 0,           false, NULL,             0,  0,                 NULL, 0, eArgTypeNone,    NULL }
334 };
335 
336 #undef SET1
337 #undef SET2
338 
339 //-------------------------------------------------------------------------
340 // CommandObjectProcessAttach
341 //-------------------------------------------------------------------------
342 
343 class CommandObjectProcessAttach : public CommandObject
344 {
345 public:
346 
347     class CommandOptions : public Options
348     {
349     public:
350 
351         CommandOptions () :
352             Options()
353         {
354             // Keep default values of all options in one place: ResetOptionValues ()
355             ResetOptionValues ();
356         }
357 
358         ~CommandOptions ()
359         {
360         }
361 
362         Error
363         SetOptionValue (int option_idx, const char *option_arg)
364         {
365             Error error;
366             char short_option = (char) m_getopt_table[option_idx].val;
367             bool success = false;
368             switch (short_option)
369             {
370                 case 'p':
371                     pid = Args::StringToUInt32 (option_arg, LLDB_INVALID_PROCESS_ID, 0, &success);
372                     if (!success || pid == LLDB_INVALID_PROCESS_ID)
373                     {
374                         error.SetErrorStringWithFormat("Invalid process ID '%s'.\n", option_arg);
375                     }
376                     break;
377 
378                 case 'P':
379                     plugin_name = option_arg;
380                     break;
381 
382                 case 'n':
383                     name.assign(option_arg);
384                     break;
385 
386                 case 'w':
387                     waitfor = true;
388                     break;
389 
390                 default:
391                     error.SetErrorStringWithFormat("Invalid short option character '%c'.\n", short_option);
392                     break;
393             }
394             return error;
395         }
396 
397         void
398         ResetOptionValues ()
399         {
400             Options::ResetOptionValues();
401             pid = LLDB_INVALID_PROCESS_ID;
402             name.clear();
403             waitfor = false;
404         }
405 
406         const lldb::OptionDefinition*
407         GetDefinitions ()
408         {
409             return g_option_table;
410         }
411 
412         virtual bool
413         HandleOptionArgumentCompletion (CommandInterpreter &interpeter,
414                                         Args &input,
415                                         int cursor_index,
416                                         int char_pos,
417                                         OptionElementVector &opt_element_vector,
418                                         int opt_element_index,
419                                         int match_start_point,
420                                         int max_return_elements,
421                                         bool &word_complete,
422                                         StringList &matches)
423         {
424             int opt_arg_pos = opt_element_vector[opt_element_index].opt_arg_pos;
425             int opt_defs_index = opt_element_vector[opt_element_index].opt_defs_index;
426 
427             // We are only completing the name option for now...
428 
429             const lldb::OptionDefinition *opt_defs = GetDefinitions();
430             if (opt_defs[opt_defs_index].short_option == 'n')
431             {
432                 // Are we in the name?
433 
434                 // Look to see if there is a -P argument provided, and if so use that plugin, otherwise
435                 // use the default plugin.
436                 Process *process = interpeter.GetDebugger().GetExecutionContext().process;
437                 bool need_to_delete_process = false;
438 
439                 const char *partial_name = NULL;
440                 partial_name = input.GetArgumentAtIndex(opt_arg_pos);
441 
442                 if (process && process->IsAlive())
443                     return true;
444 
445                 Target *target = interpeter.GetDebugger().GetSelectedTarget().get();
446                 if (target == NULL)
447                 {
448                     // No target has been set yet, for now do host completion.  Otherwise I don't know how we would
449                     // figure out what the right target to use is...
450                     std::vector<lldb::pid_t> pids;
451                     Host::ListProcessesMatchingName (partial_name, matches, pids);
452                     return true;
453                 }
454                 if (!process)
455                 {
456                     process = target->CreateProcess (interpeter.GetDebugger().GetListener(), partial_name).get();
457                     need_to_delete_process = true;
458                 }
459 
460                 if (process)
461                 {
462                     matches.Clear();
463                     std::vector<lldb::pid_t> pids;
464                     process->ListProcessesMatchingName (NULL, matches, pids);
465                     if (need_to_delete_process)
466                         target->DeleteCurrentProcess();
467                     return true;
468                 }
469             }
470 
471             return false;
472         }
473 
474         // Options table: Required for subclasses of Options.
475 
476         static lldb::OptionDefinition g_option_table[];
477 
478         // Instance variables to hold the values for command options.
479 
480         lldb::pid_t pid;
481         std::string plugin_name;
482         std::string name;
483         bool waitfor;
484     };
485 
486     CommandObjectProcessAttach (CommandInterpreter &interpreter) :
487         CommandObject (interpreter,
488                        "process attach",
489                        "Attach to a process.",
490                        "process attach <cmd-options>")
491     {
492     }
493 
494     ~CommandObjectProcessAttach ()
495     {
496     }
497 
498     bool
499     Execute (Args& command,
500              CommandReturnObject &result)
501     {
502         Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
503 
504         Process *process = m_interpreter.GetDebugger().GetExecutionContext().process;
505         if (process)
506         {
507             if (process->IsAlive())
508             {
509                 result.AppendErrorWithFormat ("Process %u is currently being debugged, kill the process before attaching.\n",
510                                               process->GetID());
511                 result.SetStatus (eReturnStatusFailed);
512                 return false;
513             }
514         }
515 
516         if (target == NULL)
517         {
518             // If there isn't a current target create one.
519             TargetSP new_target_sp;
520             FileSpec emptyFileSpec;
521             ArchSpec emptyArchSpec;
522             Error error;
523 
524             error = m_interpreter.GetDebugger().GetTargetList().CreateTarget (m_interpreter.GetDebugger(),
525                                                                               emptyFileSpec,
526                                                                               emptyArchSpec,
527                                                                               NULL,
528                                                                               false,
529                                                                               new_target_sp);
530             target = new_target_sp.get();
531             if (target == NULL || error.Fail())
532             {
533                 result.AppendError(error.AsCString("Error creating empty target"));
534                 return false;
535             }
536             m_interpreter.GetDebugger().GetTargetList().SetSelectedTarget(target);
537         }
538 
539         // Record the old executable module, we want to issue a warning if the process of attaching changed the
540         // current executable (like somebody said "file foo" then attached to a PID whose executable was bar.)
541 
542         ModuleSP old_exec_module_sp = target->GetExecutableModule();
543         ArchSpec old_arch_spec = target->GetArchitecture();
544 
545         if (command.GetArgumentCount())
546         {
547             result.AppendErrorWithFormat("Invalid arguments for '%s'.\nUsage: \n", m_cmd_name.c_str(), m_cmd_syntax.c_str());
548             result.SetStatus (eReturnStatusFailed);
549         }
550         else
551         {
552             const char *plugin_name = NULL;
553 
554             if (!m_options.plugin_name.empty())
555                 plugin_name = m_options.plugin_name.c_str();
556 
557             process = target->CreateProcess (m_interpreter.GetDebugger().GetListener(), plugin_name).get();
558 
559             if (process)
560             {
561                 Error error;
562                 int attach_pid = m_options.pid;
563 
564                 const char *wait_name = NULL;
565 
566                 if (m_options.name.empty())
567                 {
568                     if (old_exec_module_sp)
569                     {
570                         wait_name = old_exec_module_sp->GetFileSpec().GetFilename().AsCString();
571                     }
572                 }
573                 else
574                 {
575                     wait_name = m_options.name.c_str();
576                 }
577 
578                 // If we are waiting for a process with this name to show up, do that first.
579                 if (m_options.waitfor)
580                 {
581 
582                     if (wait_name == NULL)
583                     {
584                         result.AppendError("Invalid arguments: must have a file loaded or supply a process name with the waitfor option.\n");
585                         result.SetStatus (eReturnStatusFailed);
586                         return false;
587                     }
588 
589                     m_interpreter.GetDebugger().GetOutputStream().Printf("Waiting to attach to a process named \"%s\".\n", wait_name);
590                     error = process->Attach (wait_name, m_options.waitfor);
591                     if (error.Success())
592                     {
593                         result.SetStatus (eReturnStatusSuccessContinuingNoResult);
594                     }
595                     else
596                     {
597                         result.AppendErrorWithFormat ("Waiting for a process to launch named '%s': %s\n",
598                                                          wait_name,
599                                                          error.AsCString());
600                         result.SetStatus (eReturnStatusFailed);
601                         return false;
602                     }
603                 }
604                 else
605                 {
606                     // If the process was specified by name look it up, so we can warn if there are multiple
607                     // processes with this pid.
608 
609                     if (attach_pid == LLDB_INVALID_PROCESS_ID && wait_name != NULL)
610                     {
611                         std::vector<lldb::pid_t> pids;
612                         StringList matches;
613 
614                         process->ListProcessesMatchingName(wait_name, matches, pids);
615                         if (matches.GetSize() > 1)
616                         {
617                             result.AppendErrorWithFormat("More than one process named %s\n", wait_name);
618                             result.SetStatus (eReturnStatusFailed);
619                             return false;
620                         }
621                         else if (matches.GetSize() == 0)
622                         {
623                             result.AppendErrorWithFormat("Could not find a process named %s\n", wait_name);
624                             result.SetStatus (eReturnStatusFailed);
625                             return false;
626                         }
627                         else
628                         {
629                             attach_pid = pids[0];
630                         }
631 
632                     }
633 
634                     if (attach_pid != LLDB_INVALID_PROCESS_ID)
635                     {
636                         error = process->Attach (attach_pid);
637                         if (error.Success())
638                         {
639                             result.SetStatus (eReturnStatusSuccessContinuingNoResult);
640                         }
641                         else
642                         {
643                             result.AppendErrorWithFormat ("Attaching to process %i failed: %s.\n",
644                                                          attach_pid,
645                                                          error.AsCString());
646                             result.SetStatus (eReturnStatusFailed);
647                         }
648                     }
649                     else
650                     {
651                         result.AppendErrorWithFormat ("No PID specified for attach\n",
652                                                          attach_pid,
653                                                          error.AsCString());
654                         result.SetStatus (eReturnStatusFailed);
655 
656                     }
657                 }
658             }
659         }
660 
661         if (result.Succeeded())
662         {
663             // Okay, we're done.  Last step is to warn if the executable module has changed:
664             if (!old_exec_module_sp)
665             {
666                 char new_path[PATH_MAX + 1];
667                 target->GetExecutableModule()->GetFileSpec().GetPath(new_path, PATH_MAX);
668 
669                 result.AppendMessageWithFormat("Executable module set to \"%s\".\n",
670                     new_path);
671             }
672             else if (old_exec_module_sp->GetFileSpec() != target->GetExecutableModule()->GetFileSpec())
673             {
674                 char old_path[PATH_MAX + 1];
675                 char new_path[PATH_MAX + 1];
676 
677                 old_exec_module_sp->GetFileSpec().GetPath(old_path, PATH_MAX);
678                 target->GetExecutableModule()->GetFileSpec().GetPath (new_path, PATH_MAX);
679 
680                 result.AppendWarningWithFormat("Executable module changed from \"%s\" to \"%s\".\n",
681                                                     old_path, new_path);
682             }
683 
684             if (!old_arch_spec.IsValid())
685             {
686                 result.AppendMessageWithFormat ("Architecture set to: %s.\n", target->GetArchitecture().AsCString());
687             }
688             else if (old_arch_spec != target->GetArchitecture())
689             {
690                 result.AppendWarningWithFormat("Architecture changed from %s to %s.\n",
691                                                 old_arch_spec.AsCString(), target->GetArchitecture().AsCString());
692             }
693         }
694         return result.Succeeded();
695     }
696 
697     Options *
698     GetOptions ()
699     {
700         return &m_options;
701     }
702 
703 protected:
704 
705     CommandOptions m_options;
706 };
707 
708 
709 lldb::OptionDefinition
710 CommandObjectProcessAttach::CommandOptions::g_option_table[] =
711 {
712 { LLDB_OPT_SET_ALL, false, "plugin", 'P', required_argument, NULL, 0, eArgTypePlugin,        "Name of the process plugin you want to use."},
713 { LLDB_OPT_SET_1,   false, "pid",    'p', required_argument, NULL, 0, eArgTypePid,           "The process ID of an existing process to attach to."},
714 { LLDB_OPT_SET_2,   false, "name",   'n', required_argument, NULL, 0, eArgTypeProcessName,  "The name of the process to attach to."},
715 { LLDB_OPT_SET_2,   false, "waitfor",'w', no_argument,       NULL, 0, eArgTypeNone,              "Wait for the the process with <process-name> to launch."},
716 { 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL }
717 };
718 
719 //-------------------------------------------------------------------------
720 // CommandObjectProcessContinue
721 //-------------------------------------------------------------------------
722 
723 class CommandObjectProcessContinue : public CommandObject
724 {
725 public:
726 
727     CommandObjectProcessContinue (CommandInterpreter &interpreter) :
728         CommandObject (interpreter,
729                        "process continue",
730                        "Continue execution of all threads in the current process.",
731                        "process continue",
732                        eFlagProcessMustBeLaunched | eFlagProcessMustBePaused)
733     {
734     }
735 
736 
737     ~CommandObjectProcessContinue ()
738     {
739     }
740 
741     bool
742     Execute (Args& command,
743              CommandReturnObject &result)
744     {
745         Process *process = m_interpreter.GetDebugger().GetExecutionContext().process;
746         bool synchronous_execution = m_interpreter.GetSynchronous ();
747 
748         if (process == NULL)
749         {
750             result.AppendError ("no process to continue");
751             result.SetStatus (eReturnStatusFailed);
752             return false;
753          }
754 
755         StateType state = process->GetState();
756         if (state == eStateStopped)
757         {
758             if (command.GetArgumentCount() != 0)
759             {
760                 result.AppendErrorWithFormat ("The '%s' command does not take any arguments.\n", m_cmd_name.c_str());
761                 result.SetStatus (eReturnStatusFailed);
762                 return false;
763             }
764 
765             const uint32_t num_threads = process->GetThreadList().GetSize();
766 
767             // Set the actions that the threads should each take when resuming
768             for (uint32_t idx=0; idx<num_threads; ++idx)
769             {
770                 process->GetThreadList().GetThreadAtIndex(idx)->SetResumeState (eStateRunning);
771             }
772 
773             Error error(process->Resume());
774             if (error.Success())
775             {
776                 result.AppendMessageWithFormat ("Process %i resuming\n", process->GetID());
777                 if (synchronous_execution)
778                 {
779                     state = process->WaitForProcessToStop (NULL);
780 
781                     result.SetDidChangeProcessState (true);
782                     result.AppendMessageWithFormat ("Process %i %s\n", process->GetID(), StateAsCString (state));
783                     result.SetStatus (eReturnStatusSuccessFinishNoResult);
784                 }
785                 else
786                 {
787                     result.SetStatus (eReturnStatusSuccessContinuingNoResult);
788                 }
789             }
790             else
791             {
792                 result.AppendErrorWithFormat("Failed to resume process: %s.\n", error.AsCString());
793                 result.SetStatus (eReturnStatusFailed);
794             }
795         }
796         else
797         {
798             result.AppendErrorWithFormat ("Process cannot be continued from its current state (%s).\n",
799                                          StateAsCString(state));
800             result.SetStatus (eReturnStatusFailed);
801         }
802         return result.Succeeded();
803     }
804 };
805 
806 //-------------------------------------------------------------------------
807 // CommandObjectProcessDetach
808 //-------------------------------------------------------------------------
809 
810 class CommandObjectProcessDetach : public CommandObject
811 {
812 public:
813 
814     CommandObjectProcessDetach (CommandInterpreter &interpreter) :
815         CommandObject (interpreter,
816                        "process detach",
817                        "Detach from the current process being debugged.",
818                        "process detach",
819                        eFlagProcessMustBeLaunched)
820     {
821     }
822 
823     ~CommandObjectProcessDetach ()
824     {
825     }
826 
827     bool
828     Execute (Args& command,
829              CommandReturnObject &result)
830     {
831         Process *process = m_interpreter.GetDebugger().GetExecutionContext().process;
832         if (process == NULL)
833         {
834             result.AppendError ("must have a valid process in order to detach");
835             result.SetStatus (eReturnStatusFailed);
836             return false;
837         }
838 
839         result.AppendMessageWithFormat ("Detaching from process %i\n", process->GetID());
840         Error error (process->Detach());
841         if (error.Success())
842         {
843             result.SetStatus (eReturnStatusSuccessFinishResult);
844         }
845         else
846         {
847             result.AppendErrorWithFormat ("Detach failed: %s\n", error.AsCString());
848             result.SetStatus (eReturnStatusFailed);
849             return false;
850         }
851         return result.Succeeded();
852     }
853 };
854 
855 //-------------------------------------------------------------------------
856 // CommandObjectProcessLoad
857 //-------------------------------------------------------------------------
858 
859 class CommandObjectProcessLoad : public CommandObject
860 {
861 public:
862 
863     CommandObjectProcessLoad (CommandInterpreter &interpreter) :
864         CommandObject (interpreter,
865                        "process load",
866                        "Load a shared library into the current process.",
867                        "process load <filename> [<filename> ...]",
868                        eFlagProcessMustBeLaunched | eFlagProcessMustBePaused)
869     {
870     }
871 
872     ~CommandObjectProcessLoad ()
873     {
874     }
875 
876     bool
877     Execute (Args& command,
878              CommandReturnObject &result)
879     {
880         Process *process = m_interpreter.GetDebugger().GetExecutionContext().process;
881         if (process == NULL)
882         {
883             result.AppendError ("must have a valid process in order to load a shared library");
884             result.SetStatus (eReturnStatusFailed);
885             return false;
886         }
887 
888         const uint32_t argc = command.GetArgumentCount();
889 
890         for (uint32_t i=0; i<argc; ++i)
891         {
892             Error error;
893             const char *image_path = command.GetArgumentAtIndex(i);
894             FileSpec image_spec (image_path, false);
895             uint32_t image_token = process->LoadImage(image_spec, error);
896             if (image_token != LLDB_INVALID_IMAGE_TOKEN)
897             {
898                 result.AppendMessageWithFormat ("Loading \"%s\"...ok\nImage %u loaded.\n", image_path, image_token);
899                 result.SetStatus (eReturnStatusSuccessFinishResult);
900             }
901             else
902             {
903                 result.AppendErrorWithFormat ("failed to load '%s': %s", image_path, error.AsCString());
904                 result.SetStatus (eReturnStatusFailed);
905             }
906         }
907         return result.Succeeded();
908     }
909 };
910 
911 
912 //-------------------------------------------------------------------------
913 // CommandObjectProcessUnload
914 //-------------------------------------------------------------------------
915 
916 class CommandObjectProcessUnload : public CommandObject
917 {
918 public:
919 
920     CommandObjectProcessUnload (CommandInterpreter &interpreter) :
921         CommandObject (interpreter,
922                        "process unload",
923                        "Unload a shared library from the current process using the index returned by a previous call to \"process load\".",
924                        "process unload <index>",
925                        eFlagProcessMustBeLaunched | eFlagProcessMustBePaused)
926     {
927     }
928 
929     ~CommandObjectProcessUnload ()
930     {
931     }
932 
933     bool
934     Execute (Args& command,
935              CommandReturnObject &result)
936     {
937         Process *process = m_interpreter.GetDebugger().GetExecutionContext().process;
938         if (process == NULL)
939         {
940             result.AppendError ("must have a valid process in order to load a shared library");
941             result.SetStatus (eReturnStatusFailed);
942             return false;
943         }
944 
945         const uint32_t argc = command.GetArgumentCount();
946 
947         for (uint32_t i=0; i<argc; ++i)
948         {
949             const char *image_token_cstr = command.GetArgumentAtIndex(i);
950             uint32_t image_token = Args::StringToUInt32(image_token_cstr, LLDB_INVALID_IMAGE_TOKEN, 0);
951             if (image_token == LLDB_INVALID_IMAGE_TOKEN)
952             {
953                 result.AppendErrorWithFormat ("invalid image index argument '%s'", image_token_cstr);
954                 result.SetStatus (eReturnStatusFailed);
955                 break;
956             }
957             else
958             {
959                 Error error (process->UnloadImage(image_token));
960                 if (error.Success())
961                 {
962                     result.AppendMessageWithFormat ("Unloading shared library with index %u...ok\n", image_token);
963                     result.SetStatus (eReturnStatusSuccessFinishResult);
964                 }
965                 else
966                 {
967                     result.AppendErrorWithFormat ("failed to unload image: %s", error.AsCString());
968                     result.SetStatus (eReturnStatusFailed);
969                     break;
970                 }
971             }
972         }
973         return result.Succeeded();
974     }
975 };
976 
977 //-------------------------------------------------------------------------
978 // CommandObjectProcessSignal
979 //-------------------------------------------------------------------------
980 
981 class CommandObjectProcessSignal : public CommandObject
982 {
983 public:
984 
985     CommandObjectProcessSignal (CommandInterpreter &interpreter) :
986         CommandObject (interpreter,
987                        "process signal",
988                        "Send a UNIX signal to the current process being debugged.",
989                        NULL)
990     {
991         CommandArgumentEntry arg;
992         CommandArgumentData signal_arg;
993 
994         // Define the first (and only) variant of this arg.
995         signal_arg.arg_type = eArgTypeUnixSignal;
996         signal_arg.arg_repetition = eArgRepeatPlain;
997 
998         // There is only one variant this argument could be; put it into the argument entry.
999         arg.push_back (signal_arg);
1000 
1001         // Push the data for the first argument into the m_arguments vector.
1002         m_arguments.push_back (arg);
1003     }
1004 
1005     ~CommandObjectProcessSignal ()
1006     {
1007     }
1008 
1009     bool
1010     Execute (Args& command,
1011              CommandReturnObject &result)
1012     {
1013         Process *process = m_interpreter.GetDebugger().GetExecutionContext().process;
1014         if (process == NULL)
1015         {
1016             result.AppendError ("no process to signal");
1017             result.SetStatus (eReturnStatusFailed);
1018             return false;
1019         }
1020 
1021         if (command.GetArgumentCount() == 1)
1022         {
1023             int signo = LLDB_INVALID_SIGNAL_NUMBER;
1024 
1025             const char *signal_name = command.GetArgumentAtIndex(0);
1026             if (::isxdigit (signal_name[0]))
1027                 signo = Args::StringToSInt32(signal_name, LLDB_INVALID_SIGNAL_NUMBER, 0);
1028             else
1029                 signo = process->GetUnixSignals().GetSignalNumberFromName (signal_name);
1030 
1031             if (signo == LLDB_INVALID_SIGNAL_NUMBER)
1032             {
1033                 result.AppendErrorWithFormat ("Invalid signal argument '%s'.\n", command.GetArgumentAtIndex(0));
1034                 result.SetStatus (eReturnStatusFailed);
1035             }
1036             else
1037             {
1038                 Error error (process->Signal (signo));
1039                 if (error.Success())
1040                 {
1041                     result.SetStatus (eReturnStatusSuccessFinishResult);
1042                 }
1043                 else
1044                 {
1045                     result.AppendErrorWithFormat ("Failed to send signal %i: %s\n", signo, error.AsCString());
1046                     result.SetStatus (eReturnStatusFailed);
1047                 }
1048             }
1049         }
1050         else
1051         {
1052             result.AppendErrorWithFormat("'%s' takes exactly one signal number argument:\nUsage: \n", m_cmd_name.c_str(),
1053                                         m_cmd_syntax.c_str());
1054             result.SetStatus (eReturnStatusFailed);
1055         }
1056         return result.Succeeded();
1057     }
1058 };
1059 
1060 
1061 //-------------------------------------------------------------------------
1062 // CommandObjectProcessInterrupt
1063 //-------------------------------------------------------------------------
1064 
1065 class CommandObjectProcessInterrupt : public CommandObject
1066 {
1067 public:
1068 
1069 
1070     CommandObjectProcessInterrupt (CommandInterpreter &interpreter) :
1071     CommandObject (interpreter,
1072                    "process interrupt",
1073                    "Interrupt the current process being debugged.",
1074                    "process interrupt",
1075                    eFlagProcessMustBeLaunched)
1076     {
1077     }
1078 
1079     ~CommandObjectProcessInterrupt ()
1080     {
1081     }
1082 
1083     bool
1084     Execute (Args& command,
1085              CommandReturnObject &result)
1086     {
1087         Process *process = m_interpreter.GetDebugger().GetExecutionContext().process;
1088         if (process == NULL)
1089         {
1090             result.AppendError ("no process to halt");
1091             result.SetStatus (eReturnStatusFailed);
1092             return false;
1093         }
1094 
1095         if (command.GetArgumentCount() == 0)
1096         {
1097             Error error(process->Halt ());
1098             if (error.Success())
1099             {
1100                 result.SetStatus (eReturnStatusSuccessFinishResult);
1101 
1102                 // Maybe we should add a "SuspendThreadPlans so we
1103                 // can halt, and keep in place all the current thread plans.
1104                 process->GetThreadList().DiscardThreadPlans();
1105             }
1106             else
1107             {
1108                 result.AppendErrorWithFormat ("Failed to halt process: %s\n", error.AsCString());
1109                 result.SetStatus (eReturnStatusFailed);
1110             }
1111         }
1112         else
1113         {
1114             result.AppendErrorWithFormat("'%s' takes no arguments:\nUsage: \n",
1115                                         m_cmd_name.c_str(),
1116                                         m_cmd_syntax.c_str());
1117             result.SetStatus (eReturnStatusFailed);
1118         }
1119         return result.Succeeded();
1120     }
1121 };
1122 
1123 //-------------------------------------------------------------------------
1124 // CommandObjectProcessKill
1125 //-------------------------------------------------------------------------
1126 
1127 class CommandObjectProcessKill : public CommandObject
1128 {
1129 public:
1130 
1131     CommandObjectProcessKill (CommandInterpreter &interpreter) :
1132     CommandObject (interpreter,
1133                    "process kill",
1134                    "Terminate the current process being debugged.",
1135                    "process kill",
1136                    eFlagProcessMustBeLaunched)
1137     {
1138     }
1139 
1140     ~CommandObjectProcessKill ()
1141     {
1142     }
1143 
1144     bool
1145     Execute (Args& command,
1146              CommandReturnObject &result)
1147     {
1148         Process *process = m_interpreter.GetDebugger().GetExecutionContext().process;
1149         if (process == NULL)
1150         {
1151             result.AppendError ("no process to kill");
1152             result.SetStatus (eReturnStatusFailed);
1153             return false;
1154         }
1155 
1156         if (command.GetArgumentCount() == 0)
1157         {
1158             Error error (process->Destroy());
1159             if (error.Success())
1160             {
1161                 result.SetStatus (eReturnStatusSuccessFinishResult);
1162             }
1163             else
1164             {
1165                 result.AppendErrorWithFormat ("Failed to kill process: %s\n", error.AsCString());
1166                 result.SetStatus (eReturnStatusFailed);
1167             }
1168         }
1169         else
1170         {
1171             result.AppendErrorWithFormat("'%s' takes no arguments:\nUsage: \n",
1172                                         m_cmd_name.c_str(),
1173                                         m_cmd_syntax.c_str());
1174             result.SetStatus (eReturnStatusFailed);
1175         }
1176         return result.Succeeded();
1177     }
1178 };
1179 
1180 //-------------------------------------------------------------------------
1181 // CommandObjectProcessStatus
1182 //-------------------------------------------------------------------------
1183 class CommandObjectProcessStatus : public CommandObject
1184 {
1185 public:
1186     CommandObjectProcessStatus (CommandInterpreter &interpreter) :
1187     CommandObject (interpreter,
1188                    "process status",
1189                    "Show the current status and location of executing process.",
1190                    "process status",
1191                    0)
1192     {
1193     }
1194 
1195     ~CommandObjectProcessStatus()
1196     {
1197     }
1198 
1199 
1200     bool
1201     Execute
1202     (
1203         Args& command,
1204         CommandReturnObject &result
1205     )
1206     {
1207         StreamString &output_stream = result.GetOutputStream();
1208         result.SetStatus (eReturnStatusSuccessFinishNoResult);
1209         ExecutionContext exe_ctx(m_interpreter.GetDebugger().GetExecutionContext());
1210         if (exe_ctx.process)
1211         {
1212             const StateType state = exe_ctx.process->GetState();
1213             if (StateIsStoppedState(state))
1214             {
1215                 if (state == eStateExited)
1216                 {
1217                     int exit_status = exe_ctx.process->GetExitStatus();
1218                     const char *exit_description = exe_ctx.process->GetExitDescription();
1219                     output_stream.Printf ("Process %d exited with status = %i (0x%8.8x) %s\n",
1220                                           exe_ctx.process->GetID(),
1221                                           exit_status,
1222                                           exit_status,
1223                                           exit_description ? exit_description : "");
1224                 }
1225                 else
1226                 {
1227                     output_stream.Printf ("Process %d %s\n", exe_ctx.process->GetID(), StateAsCString (state));
1228                     if (exe_ctx.thread == NULL)
1229                         exe_ctx.thread = exe_ctx.process->GetThreadList().GetThreadAtIndex(0).get();
1230                     if (exe_ctx.thread != NULL)
1231                     {
1232                         DisplayThreadsInfo (m_interpreter, &exe_ctx, result, true, true);
1233                     }
1234                     else
1235                     {
1236                         result.AppendError ("No valid thread found in current process.");
1237                         result.SetStatus (eReturnStatusFailed);
1238                     }
1239                 }
1240             }
1241             else
1242             {
1243                 output_stream.Printf ("Process %d is running.\n",
1244                                           exe_ctx.process->GetID());
1245             }
1246         }
1247         else
1248         {
1249             result.AppendError ("No current location or status available.");
1250             result.SetStatus (eReturnStatusFailed);
1251         }
1252         return result.Succeeded();
1253     }
1254 };
1255 
1256 //-------------------------------------------------------------------------
1257 // CommandObjectProcessHandle
1258 //-------------------------------------------------------------------------
1259 
1260 class CommandObjectProcessHandle : public CommandObject
1261 {
1262 public:
1263 
1264     class CommandOptions : public Options
1265     {
1266     public:
1267 
1268         CommandOptions () :
1269             Options ()
1270         {
1271             ResetOptionValues ();
1272         }
1273 
1274         ~CommandOptions ()
1275         {
1276         }
1277 
1278         Error
1279         SetOptionValue (int option_idx, const char *option_arg)
1280         {
1281             Error error;
1282             char short_option = (char) m_getopt_table[option_idx].val;
1283 
1284             switch (short_option)
1285             {
1286                 case 's':
1287                     stop = option_arg;
1288                     break;
1289                 case 'n':
1290                     notify = option_arg;
1291                     break;
1292                 case 'p':
1293                     pass = option_arg;
1294                     break;
1295                 default:
1296                     error.SetErrorStringWithFormat("Invalid short option character '%c'.\n", short_option);
1297                     break;
1298             }
1299             return error;
1300         }
1301 
1302         void
1303         ResetOptionValues ()
1304         {
1305             Options::ResetOptionValues();
1306             stop.clear();
1307             notify.clear();
1308             pass.clear();
1309         }
1310 
1311         const lldb::OptionDefinition*
1312         GetDefinitions ()
1313         {
1314             return g_option_table;
1315         }
1316 
1317         // Options table: Required for subclasses of Options.
1318 
1319         static lldb::OptionDefinition g_option_table[];
1320 
1321         // Instance variables to hold the values for command options.
1322 
1323         std::string stop;
1324         std::string notify;
1325         std::string pass;
1326     };
1327 
1328 
1329     CommandObjectProcessHandle (CommandInterpreter &interpreter) :
1330         CommandObject (interpreter,
1331                        "process handle",
1332                        "Show or update what the process and debugger should do with various signals received from the OS.",
1333                        NULL)
1334     {
1335         SetHelpLong ("If no signals are specified, update them all.  If no update option is specified, list the current values.\n");
1336         CommandArgumentEntry arg;
1337         CommandArgumentData signal_arg;
1338 
1339         signal_arg.arg_type = eArgTypeUnixSignal;
1340         signal_arg.arg_repetition = eArgRepeatStar;
1341 
1342         arg.push_back (signal_arg);
1343 
1344         m_arguments.push_back (arg);
1345     }
1346 
1347     ~CommandObjectProcessHandle ()
1348     {
1349     }
1350 
1351     Options *
1352     GetOptions ()
1353     {
1354         return &m_options;
1355     }
1356 
1357     bool
1358     VerifyCommandOptionValue (const std::string &option, int &real_value)
1359     {
1360         bool okay = true;
1361 
1362         bool success = false;
1363         bool tmp_value = Args::StringToBoolean (option.c_str(), false, &success);
1364 
1365         if (success && tmp_value)
1366             real_value = 1;
1367         else if (success && !tmp_value)
1368             real_value = 0;
1369         else
1370         {
1371             // If the value isn't 'true' or 'false', it had better be 0 or 1.
1372             real_value = Args::StringToUInt32 (option.c_str(), 3);
1373             if (real_value != 0 && real_value != 1)
1374                 okay = false;
1375         }
1376 
1377         return okay;
1378     }
1379 
1380     void
1381     PrintSignalHeader (Stream &str)
1382     {
1383         str.Printf ("NAME        PASS   STOP   NOTIFY\n");
1384         str.Printf ("==========  =====  =====  ======\n");
1385     }
1386 
1387     void
1388     PrintSignal (Stream &str, int32_t signo, const char *sig_name, UnixSignals &signals)
1389     {
1390         bool stop;
1391         bool suppress;
1392         bool notify;
1393 
1394         str.Printf ("%-10s  ", sig_name);
1395         if (signals.GetSignalInfo (signo, suppress, stop, notify))
1396         {
1397             bool pass = !suppress;
1398             str.Printf ("%s  %s  %s",
1399                         (pass ? "true " : "false"),
1400                         (stop ? "true " : "false"),
1401                         (notify ? "true " : "false"));
1402         }
1403         str.Printf ("\n");
1404     }
1405 
1406     void
1407     PrintSignalInformation (Stream &str, Args &signal_args, int num_valid_signals, UnixSignals &signals)
1408     {
1409         PrintSignalHeader (str);
1410 
1411         if (num_valid_signals > 0)
1412         {
1413             size_t num_args = signal_args.GetArgumentCount();
1414             for (size_t i = 0; i < num_args; ++i)
1415             {
1416                 int32_t signo = signals.GetSignalNumberFromName (signal_args.GetArgumentAtIndex (i));
1417                 if (signo != LLDB_INVALID_SIGNAL_NUMBER)
1418                     PrintSignal (str, signo, signal_args.GetArgumentAtIndex (i), signals);
1419             }
1420         }
1421         else // Print info for ALL signals
1422         {
1423             int32_t signo = signals.GetFirstSignalNumber();
1424             while (signo != LLDB_INVALID_SIGNAL_NUMBER)
1425             {
1426                 PrintSignal (str, signo, signals.GetSignalAsCString (signo), signals);
1427                 signo = signals.GetNextSignalNumber (signo);
1428             }
1429         }
1430     }
1431 
1432     bool
1433     Execute (Args &signal_args, CommandReturnObject &result)
1434     {
1435         TargetSP target_sp = m_interpreter.GetDebugger().GetSelectedTarget();
1436 
1437         if (!target_sp)
1438         {
1439             result.AppendError ("No current target;"
1440                                 " cannot handle signals until you have a valid target and process.\n");
1441             result.SetStatus (eReturnStatusFailed);
1442             return false;
1443         }
1444 
1445         ProcessSP process_sp = target_sp->GetProcessSP();
1446 
1447         if (!process_sp)
1448         {
1449             result.AppendError ("No current process; cannot handle signals until you have a valid process.\n");
1450             result.SetStatus (eReturnStatusFailed);
1451             return false;
1452         }
1453 
1454         int stop_action = -1;   // -1 means leave the current setting alone
1455         int pass_action = -1;   // -1 means leave the current setting alone
1456         int notify_action = -1; // -1 means leave the current setting alone
1457 
1458         if (! m_options.stop.empty()
1459             && ! VerifyCommandOptionValue (m_options.stop, stop_action))
1460         {
1461             result.AppendError ("Invalid argument for command option --stop; must be true or false.\n");
1462             result.SetStatus (eReturnStatusFailed);
1463             return false;
1464         }
1465 
1466         if (! m_options.notify.empty()
1467             && ! VerifyCommandOptionValue (m_options.notify, notify_action))
1468         {
1469             result.AppendError ("Invalid argument for command option --notify; must be true or false.\n");
1470             result.SetStatus (eReturnStatusFailed);
1471             return false;
1472         }
1473 
1474         if (! m_options.pass.empty()
1475             && ! VerifyCommandOptionValue (m_options.pass, pass_action))
1476         {
1477             result.AppendError ("Invalid argument for command option --pass; must be true or false.\n");
1478             result.SetStatus (eReturnStatusFailed);
1479             return false;
1480         }
1481 
1482         size_t num_args = signal_args.GetArgumentCount();
1483         UnixSignals &signals = process_sp->GetUnixSignals();
1484         int num_signals_set = 0;
1485 
1486         if (num_args > 0)
1487         {
1488             for (size_t i = 0; i < num_args; ++i)
1489             {
1490                 int32_t signo = signals.GetSignalNumberFromName (signal_args.GetArgumentAtIndex (i));
1491                 if (signo != LLDB_INVALID_SIGNAL_NUMBER)
1492                 {
1493                     // Casting the actions as bools here should be okay, because VerifyCommandOptionValue guarantees
1494                     // the value is either 0 or 1.
1495                     if (stop_action != -1)
1496                         signals.SetShouldStop (signo, (bool) stop_action);
1497                     if (pass_action != -1)
1498                     {
1499                         bool suppress = ! ((bool) pass_action);
1500                         signals.SetShouldSuppress (signo, suppress);
1501                     }
1502                     if (notify_action != -1)
1503                         signals.SetShouldNotify (signo, (bool) notify_action);
1504                     ++num_signals_set;
1505                 }
1506                 else
1507                 {
1508                     result.AppendErrorWithFormat ("Invalid signal name '%s'\n", signal_args.GetArgumentAtIndex (i));
1509                 }
1510             }
1511         }
1512         else
1513         {
1514             // No signal specified, if any command options were specified, update ALL signals.
1515             if ((notify_action != -1) || (stop_action != -1) || (pass_action != -1))
1516             {
1517                 if (m_interpreter.Confirm ("Do you really want to update all the signals?", false))
1518                 {
1519                     int32_t signo = signals.GetFirstSignalNumber();
1520                     while (signo != LLDB_INVALID_SIGNAL_NUMBER)
1521                     {
1522                         if (notify_action != -1)
1523                             signals.SetShouldNotify (signo, (bool) notify_action);
1524                         if (stop_action != -1)
1525                             signals.SetShouldStop (signo, (bool) stop_action);
1526                         if (pass_action != -1)
1527                         {
1528                             bool suppress = ! ((bool) pass_action);
1529                             signals.SetShouldSuppress (signo, suppress);
1530                         }
1531                         signo = signals.GetNextSignalNumber (signo);
1532                     }
1533                 }
1534             }
1535         }
1536 
1537         PrintSignalInformation (result.GetOutputStream(), signal_args, num_signals_set, signals);
1538 
1539         if (num_signals_set > 0)
1540             result.SetStatus (eReturnStatusSuccessFinishNoResult);
1541         else
1542             result.SetStatus (eReturnStatusFailed);
1543 
1544         return result.Succeeded();
1545     }
1546 
1547 protected:
1548 
1549     CommandOptions m_options;
1550 };
1551 
1552 lldb::OptionDefinition
1553 CommandObjectProcessHandle::CommandOptions::g_option_table[] =
1554 {
1555 { LLDB_OPT_SET_1, false, "stop",   's', required_argument, NULL, 0, eArgTypeBoolean, "Whether or not the process should be stopped if the signal is received." },
1556 { LLDB_OPT_SET_1, false, "notify", 'n', required_argument, NULL, 0, eArgTypeBoolean, "Whether or not the debugger should notify the user if the signal is received." },
1557 { LLDB_OPT_SET_1, false, "pass",  'p', required_argument, NULL, 0, eArgTypeBoolean, "Whether or not the signal should be passed to the process." },
1558 { 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL }
1559 };
1560 
1561 //-------------------------------------------------------------------------
1562 // CommandObjectMultiwordProcess
1563 //-------------------------------------------------------------------------
1564 
1565 CommandObjectMultiwordProcess::CommandObjectMultiwordProcess (CommandInterpreter &interpreter) :
1566     CommandObjectMultiword (interpreter,
1567                             "process",
1568                             "A set of commands for operating on a process.",
1569                             "process <subcommand> [<subcommand-options>]")
1570 {
1571     LoadSubCommand ("attach",      CommandObjectSP (new CommandObjectProcessAttach (interpreter)));
1572     LoadSubCommand ("launch",      CommandObjectSP (new CommandObjectProcessLaunch (interpreter)));
1573     LoadSubCommand ("continue",    CommandObjectSP (new CommandObjectProcessContinue (interpreter)));
1574     LoadSubCommand ("detach",      CommandObjectSP (new CommandObjectProcessDetach (interpreter)));
1575     LoadSubCommand ("load",        CommandObjectSP (new CommandObjectProcessLoad (interpreter)));
1576     LoadSubCommand ("unload",      CommandObjectSP (new CommandObjectProcessUnload (interpreter)));
1577     LoadSubCommand ("signal",      CommandObjectSP (new CommandObjectProcessSignal (interpreter)));
1578     LoadSubCommand ("handle",      CommandObjectSP (new CommandObjectProcessHandle (interpreter)));
1579     LoadSubCommand ("status",      CommandObjectSP (new CommandObjectProcessStatus (interpreter)));
1580     LoadSubCommand ("interrupt",   CommandObjectSP (new CommandObjectProcessInterrupt (interpreter)));
1581     LoadSubCommand ("kill",        CommandObjectSP (new CommandObjectProcessKill (interpreter)));
1582 }
1583 
1584 CommandObjectMultiwordProcess::~CommandObjectMultiwordProcess ()
1585 {
1586 }
1587 
1588