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common/Host.cpp
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1 //===-- Host.cpp ------------------------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // C includes
10 #include <errno.h>
11 #include <limits.h>
12 #include <stdlib.h>
13 #include <sys/types.h>
14 #ifndef _WIN32
15 #include <dlfcn.h>
16 #include <grp.h>
17 #include <netdb.h>
18 #include <pwd.h>
19 #include <sys/stat.h>
20 #include <unistd.h>
21 #endif
22 
23 #if defined(__APPLE__)
24 #include <mach-o/dyld.h>
25 #include <mach/mach_init.h>
26 #include <mach/mach_port.h>
27 #endif
28 
29 #if defined(__linux__) || defined(__FreeBSD__) || \
30  defined(__FreeBSD_kernel__) || defined(__APPLE__) || \
31  defined(__NetBSD__) || defined(__OpenBSD__)
32 #if !defined(__ANDROID__)
33 #include <spawn.h>
34 #endif
35 #include <sys/syscall.h>
36 #include <sys/wait.h>
37 #endif
38 
39 #if defined(__FreeBSD__)
40 #include <pthread_np.h>
41 #endif
42 
43 #if defined(__NetBSD__)
44 #include <lwp.h>
45 #endif
46 
47 #include <csignal>
48 
49 #include "lldb/Host/FileAction.h"
50 #include "lldb/Host/FileSystem.h"
51 #include "lldb/Host/Host.h"
52 #include "lldb/Host/HostInfo.h"
53 #include "lldb/Host/HostProcess.h"
60 #include "lldb/Utility/FileSpec.h"
61 #include "lldb/Utility/Log.h"
62 #include "lldb/Utility/Predicate.h"
63 #include "lldb/Utility/Status.h"
65 #include "llvm/ADT/SmallString.h"
66 #include "llvm/ADT/StringSwitch.h"
67 #include "llvm/Support/Errno.h"
68 #include "llvm/Support/FileSystem.h"
69 
70 #if defined(_WIN32)
73 #else
75 #endif
76 
77 #if defined(__APPLE__)
78 #ifndef _POSIX_SPAWN_DISABLE_ASLR
79 #define _POSIX_SPAWN_DISABLE_ASLR 0x0100
80 #endif
81 
82 extern "C" {
83 int __pthread_chdir(const char *path);
84 int __pthread_fchdir(int fildes);
85 }
86 
87 #endif
88 
89 using namespace lldb;
90 using namespace lldb_private;
91 
92 #if !defined(__APPLE__) && !defined(_WIN32)
93 struct MonitorInfo {
94  lldb::pid_t pid; // The process ID to monitor
96  callback; // The callback function to call when "pid" exits or signals
97  bool monitor_signals; // If true, call the callback when "pid" gets signaled.
98 };
99 
101 
102 HostThread Host::StartMonitoringChildProcess(
103  const Host::MonitorChildProcessCallback &callback, lldb::pid_t pid,
104  bool monitor_signals) {
105  MonitorInfo *info_ptr = new MonitorInfo();
106 
107  info_ptr->pid = pid;
108  info_ptr->callback = callback;
109  info_ptr->monitor_signals = monitor_signals;
110 
111  char thread_name[256];
112  ::snprintf(thread_name, sizeof(thread_name),
113  "<lldb.host.wait4(pid=%" PRIu64 ")>", pid);
114  return ThreadLauncher::LaunchThread(
115  thread_name, MonitorChildProcessThreadFunction, info_ptr, NULL);
116 }
117 
118 #ifndef __linux__
119 // Scoped class that will disable thread canceling when it is constructed, and
120 // exception safely restore the previous value it when it goes out of scope.
122 public:
124  // Disable the ability for this thread to be cancelled
125  int err = ::pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &m_old_state);
126  if (err != 0)
127  m_old_state = -1;
128  }
129 
131  // Restore the ability for this thread to be cancelled to what it
132  // previously was.
133  if (m_old_state != -1)
134  ::pthread_setcancelstate(m_old_state, 0);
135  }
136 
137 private:
138  int m_old_state; // Save the old cancelability state.
139 };
140 #endif // __linux__
141 
142 #ifdef __linux__
143 #if defined(__GNUC__) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 8))
144 static __thread volatile sig_atomic_t g_usr1_called;
145 #else
146 static thread_local volatile sig_atomic_t g_usr1_called;
147 #endif
148 
149 static void SigUsr1Handler(int) { g_usr1_called = 1; }
150 #endif // __linux__
151 
153 #ifdef __linux__
154  if (g_usr1_called) {
155  g_usr1_called = 0;
156  return true;
157  }
158 #else
159  ::pthread_testcancel();
160 #endif
161  return false;
162 }
163 
166  const char *function = __FUNCTION__;
167  if (log)
168  log->Printf("%s (arg = %p) thread starting...", function, arg);
169 
170  MonitorInfo *info = (MonitorInfo *)arg;
171 
172  const Host::MonitorChildProcessCallback callback = info->callback;
173  const bool monitor_signals = info->monitor_signals;
174 
175  assert(info->pid <= UINT32_MAX);
176  const ::pid_t pid = monitor_signals ? -1 * getpgid(info->pid) : info->pid;
177 
178  delete info;
179 
180  int status = -1;
181 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__OpenBSD__)
182 #define __WALL 0
183 #endif
184  const int options = __WALL;
185 
186 #ifdef __linux__
187  // This signal is only used to interrupt the thread from waitpid
188  struct sigaction sigUsr1Action;
189  memset(&sigUsr1Action, 0, sizeof(sigUsr1Action));
190  sigUsr1Action.sa_handler = SigUsr1Handler;
191  ::sigaction(SIGUSR1, &sigUsr1Action, nullptr);
192 #endif // __linux__
193 
194  while (1) {
196  if (log)
197  log->Printf("%s ::waitpid (pid = %" PRIi32 ", &status, options = %i)...",
198  function, pid, options);
199 
201  break;
202 
203  // Get signals from all children with same process group of pid
204  const ::pid_t wait_pid = ::waitpid(pid, &status, options);
205 
207  break;
208 
209  if (wait_pid == -1) {
210  if (errno == EINTR)
211  continue;
212  else {
213  LLDB_LOG(log,
214  "arg = {0}, thread exiting because waitpid failed ({1})...",
215  arg, llvm::sys::StrError());
216  break;
217  }
218  } else if (wait_pid > 0) {
219  bool exited = false;
220  int signal = 0;
221  int exit_status = 0;
222  const char *status_cstr = NULL;
223  if (WIFSTOPPED(status)) {
224  signal = WSTOPSIG(status);
225  status_cstr = "STOPPED";
226  } else if (WIFEXITED(status)) {
227  exit_status = WEXITSTATUS(status);
228  status_cstr = "EXITED";
229  exited = true;
230  } else if (WIFSIGNALED(status)) {
231  signal = WTERMSIG(status);
232  status_cstr = "SIGNALED";
233  if (wait_pid == abs(pid)) {
234  exited = true;
235  exit_status = -1;
236  }
237  } else {
238  status_cstr = "(\?\?\?)";
239  }
240 
241  // Scope for pthread_cancel_disabler
242  {
243 #ifndef __linux__
244  ScopedPThreadCancelDisabler pthread_cancel_disabler;
245 #endif
246 
248  if (log)
249  log->Printf("%s ::waitpid (pid = %" PRIi32
250  ", &status, options = %i) => pid = %" PRIi32
251  ", status = 0x%8.8x (%s), signal = %i, exit_state = %i",
252  function, pid, options, wait_pid, status, status_cstr,
253  signal, exit_status);
254 
255  if (exited || (signal != 0 && monitor_signals)) {
256  bool callback_return = false;
257  if (callback)
258  callback_return = callback(wait_pid, exited, signal, exit_status);
259 
260  // If our process exited, then this thread should exit
261  if (exited && wait_pid == abs(pid)) {
262  if (log)
263  log->Printf("%s (arg = %p) thread exiting because pid received "
264  "exit signal...",
265  __FUNCTION__, arg);
266  break;
267  }
268  // If the callback returns true, it means this process should exit
269  if (callback_return) {
270  if (log)
271  log->Printf("%s (arg = %p) thread exiting because callback "
272  "returned true...",
273  __FUNCTION__, arg);
274  break;
275  }
276  }
277  }
278  }
279  }
280 
282  if (log)
283  log->Printf("%s (arg = %p) thread exiting...", __FUNCTION__, arg);
284 
285  return NULL;
286 }
287 
288 #endif // #if !defined (__APPLE__) && !defined (_WIN32)
289 
290 #if !defined(__APPLE__)
291 
292 void Host::SystemLog(SystemLogType type, const char *format, va_list args) {
293  vfprintf(stderr, format, args);
294 }
295 
296 #endif
297 
298 void Host::SystemLog(SystemLogType type, const char *format, ...) {
299  va_list args;
300  va_start(args, format);
301  SystemLog(type, format, args);
302  va_end(args);
303 }
304 
305 lldb::pid_t Host::GetCurrentProcessID() { return ::getpid(); }
306 
307 #ifndef _WIN32
308 
309 lldb::thread_t Host::GetCurrentThread() {
310  return lldb::thread_t(pthread_self());
311 }
312 
313 const char *Host::GetSignalAsCString(int signo) {
314  switch (signo) {
315  case SIGHUP:
316  return "SIGHUP"; // 1 hangup
317  case SIGINT:
318  return "SIGINT"; // 2 interrupt
319  case SIGQUIT:
320  return "SIGQUIT"; // 3 quit
321  case SIGILL:
322  return "SIGILL"; // 4 illegal instruction (not reset when caught)
323  case SIGTRAP:
324  return "SIGTRAP"; // 5 trace trap (not reset when caught)
325  case SIGABRT:
326  return "SIGABRT"; // 6 abort()
327 #if defined(SIGPOLL)
328 #if !defined(SIGIO) || (SIGPOLL != SIGIO)
329  // Under some GNU/Linux, SIGPOLL and SIGIO are the same. Causing the build to
330  // fail with 'multiple define cases with same value'
331  case SIGPOLL:
332  return "SIGPOLL"; // 7 pollable event ([XSR] generated, not supported)
333 #endif
334 #endif
335 #if defined(SIGEMT)
336  case SIGEMT:
337  return "SIGEMT"; // 7 EMT instruction
338 #endif
339  case SIGFPE:
340  return "SIGFPE"; // 8 floating point exception
341  case SIGKILL:
342  return "SIGKILL"; // 9 kill (cannot be caught or ignored)
343  case SIGBUS:
344  return "SIGBUS"; // 10 bus error
345  case SIGSEGV:
346  return "SIGSEGV"; // 11 segmentation violation
347  case SIGSYS:
348  return "SIGSYS"; // 12 bad argument to system call
349  case SIGPIPE:
350  return "SIGPIPE"; // 13 write on a pipe with no one to read it
351  case SIGALRM:
352  return "SIGALRM"; // 14 alarm clock
353  case SIGTERM:
354  return "SIGTERM"; // 15 software termination signal from kill
355  case SIGURG:
356  return "SIGURG"; // 16 urgent condition on IO channel
357  case SIGSTOP:
358  return "SIGSTOP"; // 17 sendable stop signal not from tty
359  case SIGTSTP:
360  return "SIGTSTP"; // 18 stop signal from tty
361  case SIGCONT:
362  return "SIGCONT"; // 19 continue a stopped process
363  case SIGCHLD:
364  return "SIGCHLD"; // 20 to parent on child stop or exit
365  case SIGTTIN:
366  return "SIGTTIN"; // 21 to readers pgrp upon background tty read
367  case SIGTTOU:
368  return "SIGTTOU"; // 22 like TTIN for output if (tp->t_local&LTOSTOP)
369 #if defined(SIGIO)
370  case SIGIO:
371  return "SIGIO"; // 23 input/output possible signal
372 #endif
373  case SIGXCPU:
374  return "SIGXCPU"; // 24 exceeded CPU time limit
375  case SIGXFSZ:
376  return "SIGXFSZ"; // 25 exceeded file size limit
377  case SIGVTALRM:
378  return "SIGVTALRM"; // 26 virtual time alarm
379  case SIGPROF:
380  return "SIGPROF"; // 27 profiling time alarm
381 #if defined(SIGWINCH)
382  case SIGWINCH:
383  return "SIGWINCH"; // 28 window size changes
384 #endif
385 #if defined(SIGINFO)
386  case SIGINFO:
387  return "SIGINFO"; // 29 information request
388 #endif
389  case SIGUSR1:
390  return "SIGUSR1"; // 30 user defined signal 1
391  case SIGUSR2:
392  return "SIGUSR2"; // 31 user defined signal 2
393  default:
394  break;
395  }
396  return NULL;
397 }
398 
399 #endif
400 
401 #if !defined(__APPLE__) // see Host.mm
402 
403 bool Host::GetBundleDirectory(const FileSpec &file, FileSpec &bundle) {
404  bundle.Clear();
405  return false;
406 }
407 
408 bool Host::ResolveExecutableInBundle(FileSpec &file) { return false; }
409 #endif
410 
411 #ifndef _WIN32
412 
413 FileSpec Host::GetModuleFileSpecForHostAddress(const void *host_addr) {
414  FileSpec module_filespec;
415 #if !defined(__ANDROID__)
416  Dl_info info;
417  if (::dladdr(host_addr, &info)) {
418  if (info.dli_fname) {
419  module_filespec.SetFile(info.dli_fname, FileSpec::Style::native);
420  FileSystem::Instance().Resolve(module_filespec);
421  }
422  }
423 #endif
424  return module_filespec;
425 }
426 
427 #endif
428 
429 #if !defined(__linux__)
430 bool Host::FindProcessThreads(const lldb::pid_t pid, TidMap &tids_to_attach) {
431  return false;
432 }
433 #endif
434 
435 struct ShellInfo {
437  : process_reaped(false), pid(LLDB_INVALID_PROCESS_ID), signo(-1),
438  status(-1) {}
439 
442  int signo;
443  int status;
444 };
445 
446 static bool
447 MonitorShellCommand(std::shared_ptr<ShellInfo> shell_info, lldb::pid_t pid,
448  bool exited, // True if the process did exit
449  int signo, // Zero for no signal
450  int status) // Exit value of process if signal is zero
451 {
452  shell_info->pid = pid;
453  shell_info->signo = signo;
454  shell_info->status = status;
455  // Let the thread running Host::RunShellCommand() know that the process
456  // exited and that ShellInfo has been filled in by broadcasting to it
457  shell_info->process_reaped.SetValue(true, eBroadcastAlways);
458  return true;
459 }
460 
461 Status Host::RunShellCommand(const char *command, const FileSpec &working_dir,
462  int *status_ptr, int *signo_ptr,
463  std::string *command_output_ptr,
464  const Timeout<std::micro> &timeout,
465  bool run_in_default_shell,
466  bool hide_stderr) {
467  return RunShellCommand(Args(command), working_dir, status_ptr, signo_ptr,
468  command_output_ptr, timeout, run_in_default_shell,
469  hide_stderr);
470 }
471 
472 Status Host::RunShellCommand(const Args &args, const FileSpec &working_dir,
473  int *status_ptr, int *signo_ptr,
474  std::string *command_output_ptr,
475  const Timeout<std::micro> &timeout,
476  bool run_in_default_shell,
477  bool hide_stderr) {
478  Status error;
479  ProcessLaunchInfo launch_info;
480  launch_info.SetArchitecture(HostInfo::GetArchitecture());
481  if (run_in_default_shell) {
482  // Run the command in a shell
483  launch_info.SetShell(HostInfo::GetDefaultShell());
484  launch_info.GetArguments().AppendArguments(args);
485  const bool localhost = true;
486  const bool will_debug = false;
487  const bool first_arg_is_full_shell_command = false;
489  error, localhost, will_debug, first_arg_is_full_shell_command, 0);
490  } else {
491  // No shell, just run it
492  const bool first_arg_is_executable = true;
493  launch_info.SetArguments(args, first_arg_is_executable);
494  }
495 
496  if (working_dir)
497  launch_info.SetWorkingDirectory(working_dir);
498  llvm::SmallString<64> output_file_path;
499 
500  if (command_output_ptr) {
501  // Create a temporary file to get the stdout/stderr and redirect the output
502  // of the command into this file. We will later read this file if all goes
503  // well and fill the data into "command_output_ptr"
504  if (FileSpec tmpdir_file_spec = HostInfo::GetProcessTempDir()) {
505  tmpdir_file_spec.AppendPathComponent("lldb-shell-output.%%%%%%");
506  llvm::sys::fs::createUniqueFile(tmpdir_file_spec.GetPath(),
507  output_file_path);
508  } else {
509  llvm::sys::fs::createTemporaryFile("lldb-shell-output.%%%%%%", "",
510  output_file_path);
511  }
512  }
513 
514  FileSpec output_file_spec(output_file_path.c_str());
515  // Set up file descriptors.
516  launch_info.AppendSuppressFileAction(STDIN_FILENO, true, false);
517  if (output_file_spec)
518  launch_info.AppendOpenFileAction(STDOUT_FILENO, output_file_spec, false,
519  true);
520  else
521  launch_info.AppendSuppressFileAction(STDOUT_FILENO, false, true);
522 
523  if (output_file_spec && !hide_stderr)
524  launch_info.AppendDuplicateFileAction(STDOUT_FILENO, STDERR_FILENO);
525  else
526  launch_info.AppendSuppressFileAction(STDERR_FILENO, false, true);
527 
528  std::shared_ptr<ShellInfo> shell_info_sp(new ShellInfo());
529  const bool monitor_signals = false;
530  launch_info.SetMonitorProcessCallback(
531  std::bind(MonitorShellCommand, shell_info_sp, std::placeholders::_1,
532  std::placeholders::_2, std::placeholders::_3,
533  std::placeholders::_4),
534  monitor_signals);
535 
536  error = LaunchProcess(launch_info);
537  const lldb::pid_t pid = launch_info.GetProcessID();
538 
539  if (error.Success() && pid == LLDB_INVALID_PROCESS_ID)
540  error.SetErrorString("failed to get process ID");
541 
542  if (error.Success()) {
543  if (!shell_info_sp->process_reaped.WaitForValueEqualTo(true, timeout)) {
544  error.SetErrorString("timed out waiting for shell command to complete");
545 
546  // Kill the process since it didn't complete within the timeout specified
547  Kill(pid, SIGKILL);
548  // Wait for the monitor callback to get the message
549  shell_info_sp->process_reaped.WaitForValueEqualTo(
550  true, std::chrono::seconds(1));
551  } else {
552  if (status_ptr)
553  *status_ptr = shell_info_sp->status;
554 
555  if (signo_ptr)
556  *signo_ptr = shell_info_sp->signo;
557 
558  if (command_output_ptr) {
559  command_output_ptr->clear();
560  uint64_t file_size =
561  FileSystem::Instance().GetByteSize(output_file_spec);
562  if (file_size > 0) {
563  if (file_size > command_output_ptr->max_size()) {
565  "shell command output is too large to fit into a std::string");
566  } else {
567  auto Buffer =
568  FileSystem::Instance().CreateDataBuffer(output_file_spec);
569  if (error.Success())
570  command_output_ptr->assign(Buffer->GetChars(),
571  Buffer->GetByteSize());
572  }
573  }
574  }
575  }
576  }
577 
578  llvm::sys::fs::remove(output_file_spec.GetPath());
579  return error;
580 }
581 
582 // The functions below implement process launching for non-Apple-based
583 // platforms
584 #if !defined(__APPLE__)
585 Status Host::LaunchProcess(ProcessLaunchInfo &launch_info) {
586  std::unique_ptr<ProcessLauncher> delegate_launcher;
587 #if defined(_WIN32)
588  delegate_launcher.reset(new ProcessLauncherWindows());
589 #else
590  delegate_launcher.reset(new ProcessLauncherPosixFork());
591 #endif
592  MonitoringProcessLauncher launcher(std::move(delegate_launcher));
593 
594  Status error;
595  HostProcess process = launcher.LaunchProcess(launch_info, error);
596 
597  // TODO(zturner): It would be better if the entire HostProcess were returned
598  // instead of writing it into this structure.
599  launch_info.SetProcessID(process.GetProcessId());
600 
601  return error;
602 }
603 #endif // !defined(__APPLE__)
604 
605 #ifndef _WIN32
606 void Host::Kill(lldb::pid_t pid, int signo) { ::kill(pid, signo); }
607 
608 #endif
609 
610 #if !defined(__APPLE__)
611 bool Host::OpenFileInExternalEditor(const FileSpec &file_spec,
612  uint32_t line_no) {
613  return false;
614 }
615 
616 #endif
617 
618 std::unique_ptr<Connection> Host::CreateDefaultConnection(llvm::StringRef url) {
619 #if defined(_WIN32)
620  if (url.startswith("file://"))
621  return std::unique_ptr<Connection>(new ConnectionGenericFile());
622 #endif
623  return std::unique_ptr<Connection>(new ConnectionFileDescriptor());
624 }
625 
626 #if defined(LLVM_ON_UNIX)
627 WaitStatus WaitStatus::Decode(int wstatus) {
628  if (WIFEXITED(wstatus))
629  return {Exit, uint8_t(WEXITSTATUS(wstatus))};
630  else if (WIFSIGNALED(wstatus))
631  return {Signal, uint8_t(WTERMSIG(wstatus))};
632  else if (WIFSTOPPED(wstatus))
633  return {Stop, uint8_t(WSTOPSIG(wstatus))};
634  llvm_unreachable("Unknown wait status");
635 }
636 #endif
637 
638 void llvm::format_provider<WaitStatus>::format(const WaitStatus &WS,
639  raw_ostream &OS,
640  StringRef Options) {
641  if (Options == "g") {
642  char type;
643  switch (WS.type) {
644  case WaitStatus::Exit:
645  type = 'W';
646  break;
647  case WaitStatus::Signal:
648  type = 'X';
649  break;
650  case WaitStatus::Stop:
651  type = 'S';
652  break;
653  }
654  OS << formatv("{0}{1:x-2}", type, WS.status);
655  return;
656  }
657 
658  assert(Options.empty());
659  const char *desc;
660  switch(WS.type) {
661  case WaitStatus::Exit:
662  desc = "Exited with status";
663  break;
664  case WaitStatus::Signal:
665  desc = "Killed by signal";
666  break;
667  case WaitStatus::Stop:
668  desc = "Stopped by signal";
669  break;
670  }
671  OS << desc << " " << int(WS.status);
672 }
A command line argument class.
Definition: Args.h:32
static bool MonitorShellCommand(std::shared_ptr< ShellInfo > shell_info, lldb::pid_t pid, bool exited, int signo, int status)
#define LIBLLDB_LOG_PROCESS
Definition: Logging.h:15
Enumerations for broadcasting.
Definition: SBLaunchInfo.h:14
void SetArchitecture(const ArchSpec &arch)
Definition: ProcessInfo.h:66
#define LLDB_INVALID_PROCESS_ID
Definition: lldb-defines.h:92
lldb::pid_t pid
bool AppendSuppressFileAction(int fd, bool read, bool write)
int __pthread_fchdir(int fildes)
void SetProcessID(lldb::pid_t pid)
Definition: ProcessInfo.h:70
A file utility class.
Definition: FileSpec.h:55
bool monitor_signals
Definition: common/Host.cpp:97
void Clear()
Clears the object state.
Definition: FileSpec.cpp:285
#define LLDB_LOG(log,...)
Definition: Log.h:209
void SetArguments(const Args &args, bool first_arg_is_executable)
Definition: ProcessInfo.cpp:96
#define SIGSTOP
#define UINT32_MAX
Definition: lldb-defines.h:31
lldb_private::Predicate< bool > process_reaped
Log * GetLogIfAllCategoriesSet(uint32_t mask)
Definition: Logging.cpp:57
HostProcess LaunchProcess(const ProcessLaunchInfo &launch_info, Status &error) override
Launch the process specified in launch_info.
bool AppendOpenFileAction(int fd, const FileSpec &file_spec, bool read, bool write)
void SetErrorString(llvm::StringRef err_str)
Set the current error string to err_str.
Definition: Status.cpp:241
bool Success() const
Test for success condition.
Definition: Status.cpp:287
Always send a broadcast when the value is modified.
Definition: Predicate.h:28
int __pthread_chdir(const char *path)
#define SIGKILL
pthread_t thread_t
Definition: lldb-types.h:58
A command line option parsing protocol class.
Definition: Options.h:62
bool ConvertArgumentsForLaunchingInShell(Status &error, bool localhost, bool will_debug, bool first_arg_is_full_shell_command, int32_t num_resumes)
void SetWorkingDirectory(const FileSpec &working_dir)
Definition: SBAddress.h:15
uint64_t pid_t
Definition: lldb-types.h:85
std::map< lldb::pid_t, bool > TidMap
Definition: Host.h:180
int SetErrorStringWithFormat(const char *format,...) __attribute__((format(printf
Set the current error string to a formatted error string.
Definition: Status.cpp:255
static bool CheckForMonitorCancellation()
void SetFile(llvm::StringRef path, Style style)
Change the file specified with a new path.
Definition: FileSpec.cpp:198
#define SIGTRAP
std::function< bool(lldb::pid_t pid, bool exited, int signal, int status)> MonitorChildProcessCallback
Definition: Host.h:68
void AppendArguments(const Args &rhs)
Definition: Args.cpp:296
void SetMonitorProcessCallback(const Host::MonitorChildProcessCallback &callback, bool monitor_signals)
lldb::pid_t GetProcessId() const
Definition: HostProcess.cpp:29
void Printf(const char *format,...) __attribute__((format(printf
Definition: Log.cpp:113
void SetShell(const FileSpec &shell)
lldb::pid_t GetProcessID() const
Definition: ProcessInfo.h:68
static thread_result_t MonitorChildProcessThreadFunction(void *arg)
lldb::pid_t pid
Definition: common/Host.cpp:94
bool AppendDuplicateFileAction(int fd, int dup_fd)
Host::MonitorChildProcessCallback callback
Definition: common/Host.cpp:96
An error handling class.
Definition: Status.h:44
void * thread_result_t
Definition: lldb-types.h:62