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f034231a6a
freebsd-dev/tools/driver/Driver.cpp
Ed Maste f034231a6a Import lldb as of SVN r188801 
(A number of files not required for the FreeBSD build have been removed.)

Sponsored by:	DARPA, AFRL
2013-08-23 17:46:38 +00:00

1734 lines
64 KiB
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//===-- Driver.cpp ----------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "Driver.h"
#include <getopt.h>
#include <libgen.h>
#include <sys/ioctl.h>
#include <termios.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <limits.h>
#include <fcntl.h>
#include <inttypes.h>
#include <string>
#include "IOChannel.h"
#include "lldb/API/SBBreakpoint.h"
#include "lldb/API/SBCommandInterpreter.h"
#include "lldb/API/SBCommandReturnObject.h"
#include "lldb/API/SBCommunication.h"
#include "lldb/API/SBDebugger.h"
#include "lldb/API/SBEvent.h"
#include "lldb/API/SBHostOS.h"
#include "lldb/API/SBListener.h"
#include "lldb/API/SBStream.h"
#include "lldb/API/SBTarget.h"
#include "lldb/API/SBThread.h"
#include "lldb/API/SBProcess.h"
using namespace lldb;
static void reset_stdin_termios ();
static bool g_old_stdin_termios_is_valid = false;
static struct termios g_old_stdin_termios;
static char *g_debugger_name = (char *) "";
static Driver *g_driver = NULL;
// In the Driver::MainLoop, we change the terminal settings. This function is
// added as an atexit handler to make sure we clean them up.
static void
reset_stdin_termios ()
{
if (g_old_stdin_termios_is_valid)
{
g_old_stdin_termios_is_valid = false;
::tcsetattr (STDIN_FILENO, TCSANOW, &g_old_stdin_termios);
}
}
typedef struct
{
uint32_t usage_mask; // Used to mark options that can be used together. If (1 << n & usage_mask) != 0
// then this option belongs to option set n.
bool required; // This option is required (in the current usage level)
const char * long_option; // Full name for this option.
int short_option; // Single character for this option.
int option_has_arg; // no_argument, required_argument or optional_argument
uint32_t completion_type; // Cookie the option class can use to do define the argument completion.
lldb::CommandArgumentType argument_type; // Type of argument this option takes
const char * usage_text; // Full text explaining what this options does and what (if any) argument to
// pass it.
} OptionDefinition;
#define LLDB_3_TO_5 LLDB_OPT_SET_3|LLDB_OPT_SET_4|LLDB_OPT_SET_5
#define LLDB_4_TO_5 LLDB_OPT_SET_4|LLDB_OPT_SET_5
static OptionDefinition g_options[] =
{
{ LLDB_OPT_SET_1, true , "help" , 'h', no_argument , 0, eArgTypeNone,
"Prints out the usage information for the LLDB debugger." },
{ LLDB_OPT_SET_2, true , "version" , 'v', no_argument , 0, eArgTypeNone,
"Prints out the current version number of the LLDB debugger." },
{ LLDB_OPT_SET_3, true , "arch" , 'a', required_argument, 0, eArgTypeArchitecture,
"Tells the debugger to use the specified architecture when starting and running the program. <architecture> must "
"be one of the architectures for which the program was compiled." },
{ LLDB_OPT_SET_3, true , "file" , 'f', required_argument, 0, eArgTypeFilename,
"Tells the debugger to use the file <filename> as the program to be debugged." },
{ LLDB_OPT_SET_3, false, "core" , 'c', required_argument, 0, eArgTypeFilename,
"Tells the debugger to use the fullpath to <path> as the core file." },
{ LLDB_OPT_SET_4, true , "attach-name" , 'n', required_argument, 0, eArgTypeProcessName,
"Tells the debugger to attach to a process with the given name." },
{ LLDB_OPT_SET_4, true , "wait-for" , 'w', no_argument , 0, eArgTypeNone,
"Tells the debugger to wait for a process with the given pid or name to launch before attaching." },
{ LLDB_OPT_SET_5, true , "attach-pid" , 'p', required_argument, 0, eArgTypePid,
"Tells the debugger to attach to a process with the given pid." },
{ LLDB_3_TO_5, false, "script-language", 'l', required_argument, 0, eArgTypeScriptLang,
"Tells the debugger to use the specified scripting language for user-defined scripts, rather than the default. "
"Valid scripting languages that can be specified include Python, Perl, Ruby and Tcl. Currently only the Python "
"extensions have been implemented." },
{ LLDB_3_TO_5, false, "debug" , 'd', no_argument , 0, eArgTypeNone,
"Tells the debugger to print out extra information for debugging itself." },
{ LLDB_3_TO_5, false, "source" , 's', required_argument, 0, eArgTypeFilename,
"Tells the debugger to read in and execute the file <file>, which should contain lldb commands." },
{ LLDB_3_TO_5, false, "editor" , 'e', no_argument , 0, eArgTypeNone,
"Tells the debugger to open source files using the host's \"external editor\" mechanism." },
{ LLDB_3_TO_5, false, "no-lldbinit" , 'x', no_argument , 0, eArgTypeNone,
"Do not automatically parse any '.lldbinit' files." },
{ LLDB_3_TO_5, false, "no-use-colors" , 'o', no_argument , 0, eArgTypeNone,
"Do not use colors." },
{ LLDB_OPT_SET_6, true , "python-path" , 'P', no_argument , 0, eArgTypeNone,
"Prints out the path to the lldb.py file for this version of lldb." },
{ 0, false, NULL , 0 , 0 , 0, eArgTypeNone, NULL }
};
static const uint32_t last_option_set_with_args = 2;
Driver::Driver () :
SBBroadcaster ("Driver"),
m_debugger (SBDebugger::Create(false)),
m_editline_pty (),
m_editline_slave_fh (NULL),
m_editline_reader (),
m_io_channel_ap (),
m_option_data (),
m_executing_user_command (false),
m_waiting_for_command (false),
m_done(false)
{
// We want to be able to handle CTRL+D in the terminal to have it terminate
// certain input
m_debugger.SetCloseInputOnEOF (false);
g_debugger_name = (char *) m_debugger.GetInstanceName();
if (g_debugger_name == NULL)
g_debugger_name = (char *) "";
g_driver = this;
}
Driver::~Driver ()
{
g_driver = NULL;
g_debugger_name = NULL;
}
void
Driver::CloseIOChannelFile ()
{
// Write an End of File sequence to the file descriptor to ensure any
// read functions can exit.
char eof_str[] = "\x04";
::write (m_editline_pty.GetMasterFileDescriptor(), eof_str, strlen(eof_str));
m_editline_pty.CloseMasterFileDescriptor();
if (m_editline_slave_fh)
{
::fclose (m_editline_slave_fh);
m_editline_slave_fh = NULL;
}
}
// This function takes INDENT, which tells how many spaces to output at the front
// of each line; TEXT, which is the text that is to be output. It outputs the
// text, on multiple lines if necessary, to RESULT, with INDENT spaces at the
// front of each line. It breaks lines on spaces, tabs or newlines, shortening
// the line if necessary to not break in the middle of a word. It assumes that
// each output line should contain a maximum of OUTPUT_MAX_COLUMNS characters.
void
OutputFormattedUsageText (FILE *out, int indent, const char *text, int output_max_columns)
{
int len = strlen (text);
std::string text_string (text);
// Force indentation to be reasonable.
if (indent >= output_max_columns)
indent = 0;
// Will it all fit on one line?
if (len + indent < output_max_columns)
// Output as a single line
fprintf (out, "%*s%s\n", indent, "", text);
else
{
// We need to break it up into multiple lines.
int text_width = output_max_columns - indent - 1;
int start = 0;
int end = start;
int final_end = len;
int sub_len;
while (end < final_end)
{
// Dont start the 'text' on a space, since we're already outputting the indentation.
while ((start < final_end) && (text[start] == ' '))
start++;
end = start + text_width;
if (end > final_end)
end = final_end;
else
{
// If we're not at the end of the text, make sure we break the line on white space.
while (end > start
&& text[end] != ' ' && text[end] != '\t' && text[end] != '\n')
end--;
}
sub_len = end - start;
std::string substring = text_string.substr (start, sub_len);
fprintf (out, "%*s%s\n", indent, "", substring.c_str());
start = end + 1;
}
}
}
void
ShowUsage (FILE *out, OptionDefinition *option_table, Driver::OptionData data)
{
uint32_t screen_width = 80;
uint32_t indent_level = 0;
const char *name = "lldb";
fprintf (out, "\nUsage:\n\n");
indent_level += 2;
// First, show each usage level set of options, e.g. <cmd> [options-for-level-0]
// <cmd> [options-for-level-1]
// etc.
uint32_t num_options;
uint32_t num_option_sets = 0;
for (num_options = 0; option_table[num_options].long_option != NULL; ++num_options)
{
uint32_t this_usage_mask = option_table[num_options].usage_mask;
if (this_usage_mask == LLDB_OPT_SET_ALL)
{
if (num_option_sets == 0)
num_option_sets = 1;
}
else
{
for (uint32_t j = 0; j < LLDB_MAX_NUM_OPTION_SETS; j++)
{
if (this_usage_mask & 1 << j)
{
if (num_option_sets <= j)
num_option_sets = j + 1;
}
}
}
}
for (uint32_t opt_set = 0; opt_set < num_option_sets; opt_set++)
{
uint32_t opt_set_mask;
opt_set_mask = 1 << opt_set;
if (opt_set > 0)
fprintf (out, "\n");
fprintf (out, "%*s%s", indent_level, "", name);
bool is_help_line = false;
for (uint32_t i = 0; i < num_options; ++i)
{
if (option_table[i].usage_mask & opt_set_mask)
{
CommandArgumentType arg_type = option_table[i].argument_type;
const char *arg_name = SBCommandInterpreter::GetArgumentTypeAsCString (arg_type);
// This is a bit of a hack, but there's no way to say certain options don't have arguments yet...
// so we do it by hand here.
if (option_table[i].short_option == 'h')
is_help_line = true;
if (option_table[i].required)
{
if (option_table[i].option_has_arg == required_argument)
fprintf (out, " -%c <%s>", option_table[i].short_option, arg_name);
else if (option_table[i].option_has_arg == optional_argument)
fprintf (out, " -%c [<%s>]", option_table[i].short_option, arg_name);
else
fprintf (out, " -%c", option_table[i].short_option);
}
else
{
if (option_table[i].option_has_arg == required_argument)
fprintf (out, " [-%c <%s>]", option_table[i].short_option, arg_name);
else if (option_table[i].option_has_arg == optional_argument)
fprintf (out, " [-%c [<%s>]]", option_table[i].short_option, arg_name);
else
fprintf (out, " [-%c]", option_table[i].short_option);
}
}
}
if (!is_help_line && (opt_set <= last_option_set_with_args))
fprintf (out, " [[--] <PROGRAM-ARG-1> [<PROGRAM_ARG-2> ...]]");
}
fprintf (out, "\n\n");
// Now print out all the detailed information about the various options: long form, short form and help text:
// -- long_name <argument>
// - short <argument>
// help text
// This variable is used to keep track of which options' info we've printed out, because some options can be in
// more than one usage level, but we only want to print the long form of its information once.
Driver::OptionData::OptionSet options_seen;
Driver::OptionData::OptionSet::iterator pos;
indent_level += 5;
for (uint32_t i = 0; i < num_options; ++i)
{
// Only print this option if we haven't already seen it.
pos = options_seen.find (option_table[i].short_option);
if (pos == options_seen.end())
{
CommandArgumentType arg_type = option_table[i].argument_type;
const char *arg_name = SBCommandInterpreter::GetArgumentTypeAsCString (arg_type);
options_seen.insert (option_table[i].short_option);
fprintf (out, "%*s-%c ", indent_level, "", option_table[i].short_option);
if (arg_type != eArgTypeNone)
fprintf (out, "<%s>", arg_name);
fprintf (out, "\n");
fprintf (out, "%*s--%s ", indent_level, "", option_table[i].long_option);
if (arg_type != eArgTypeNone)
fprintf (out, "<%s>", arg_name);
fprintf (out, "\n");
indent_level += 5;
OutputFormattedUsageText (out, indent_level, option_table[i].usage_text, screen_width);
indent_level -= 5;
fprintf (out, "\n");
}
}
indent_level -= 5;
fprintf (out, "\n%*s(If you don't provide -f then the first argument will be the file to be debugged"
"\n%*s so '%s -- <filename> [<ARG1> [<ARG2>]]' also works."
"\n%*s Remember to end the options with \"--\" if any of your arguments have a \"-\" in them.)\n\n",
indent_level, "",
indent_level, "",
name,
indent_level, "");
}
void
BuildGetOptTable (OptionDefinition *expanded_option_table, std::vector<struct option> &getopt_table,
uint32_t num_options)
{
if (num_options == 0)
return;
uint32_t i;
uint32_t j;
std::bitset<256> option_seen;
getopt_table.resize (num_options + 1);
for (i = 0, j = 0; i < num_options; ++i)
{
char short_opt = expanded_option_table[i].short_option;
if (option_seen.test(short_opt) == false)
{
getopt_table[j].name = expanded_option_table[i].long_option;
getopt_table[j].has_arg = expanded_option_table[i].option_has_arg;
getopt_table[j].flag = NULL;
getopt_table[j].val = expanded_option_table[i].short_option;
option_seen.set(short_opt);
++j;
}
}
getopt_table[j].name = NULL;
getopt_table[j].has_arg = 0;
getopt_table[j].flag = NULL;
getopt_table[j].val = 0;
}
Driver::OptionData::OptionData () :
m_args(),
m_script_lang (lldb::eScriptLanguageDefault),
m_core_file (),
m_crash_log (),
m_source_command_files (),
m_debug_mode (false),
m_print_version (false),
m_print_python_path (false),
m_print_help (false),
m_wait_for(false),
m_process_name(),
m_process_pid(LLDB_INVALID_PROCESS_ID),
m_use_external_editor(false),
m_seen_options()
{
}
Driver::OptionData::~OptionData ()
{
}
void
Driver::OptionData::Clear ()
{
m_args.clear ();
m_script_lang = lldb::eScriptLanguageDefault;
m_source_command_files.clear ();
m_debug_mode = false;
m_print_help = false;
m_print_version = false;
m_print_python_path = false;
m_use_external_editor = false;
m_wait_for = false;
m_process_name.erase();
m_process_pid = LLDB_INVALID_PROCESS_ID;
}
void
Driver::ResetOptionValues ()
{
m_option_data.Clear ();
}
const char *
Driver::GetFilename() const
{
if (m_option_data.m_args.empty())
return NULL;
return m_option_data.m_args.front().c_str();
}
const char *
Driver::GetCrashLogFilename() const
{
if (m_option_data.m_crash_log.empty())
return NULL;
return m_option_data.m_crash_log.c_str();
}
lldb::ScriptLanguage
Driver::GetScriptLanguage() const
{
return m_option_data.m_script_lang;
}
size_t
Driver::GetNumSourceCommandFiles () const
{
return m_option_data.m_source_command_files.size();
}
const char *
Driver::GetSourceCommandFileAtIndex (uint32_t idx) const
{
if (idx < m_option_data.m_source_command_files.size())
return m_option_data.m_source_command_files[idx].c_str();
return NULL;
}
bool
Driver::GetDebugMode() const
{
return m_option_data.m_debug_mode;
}
// Check the arguments that were passed to this program to make sure they are valid and to get their
// argument values (if any). Return a boolean value indicating whether or not to start up the full
// debugger (i.e. the Command Interpreter) or not. Return FALSE if the arguments were invalid OR
// if the user only wanted help or version information.
SBError
Driver::ParseArgs (int argc, const char *argv[], FILE *out_fh, bool &exit)
{
ResetOptionValues ();
SBCommandReturnObject result;
SBError error;
std::string option_string;
struct option *long_options = NULL;
std::vector<struct option> long_options_vector;
uint32_t num_options;
for (num_options = 0; g_options[num_options].long_option != NULL; ++num_options)
/* Do Nothing. */;
if (num_options == 0)
{
if (argc > 1)
error.SetErrorStringWithFormat ("invalid number of options");
return error;
}
BuildGetOptTable (g_options, long_options_vector, num_options);
if (long_options_vector.empty())
long_options = NULL;
else
long_options = &long_options_vector.front();
if (long_options == NULL)
{
error.SetErrorStringWithFormat ("invalid long options");
return error;
}
// Build the option_string argument for call to getopt_long_only.
for (int i = 0; long_options[i].name != NULL; ++i)
{
if (long_options[i].flag == NULL)
{
option_string.push_back ((char) long_options[i].val);
switch (long_options[i].has_arg)
{
default:
case no_argument:
break;
case required_argument:
option_string.push_back (':');
break;
case optional_argument:
option_string.append ("::");
break;
}
}
}
// This is kind of a pain, but since we make the debugger in the Driver's constructor, we can't
// know at that point whether we should read in init files yet. So we don't read them in in the
// Driver constructor, then set the flags back to "read them in" here, and then if we see the
// "-n" flag, we'll turn it off again. Finally we have to read them in by hand later in the
// main loop.
m_debugger.SkipLLDBInitFiles (false);
m_debugger.SkipAppInitFiles (false);
// Prepare for & make calls to getopt_long_only.
#if __GLIBC__
optind = 0;
#else
optreset = 1;
optind = 1;
#endif
int val;
while (1)
{
int long_options_index = -1;
val = ::getopt_long_only (argc, const_cast<char **>(argv), option_string.c_str(), long_options, &long_options_index);
if (val == -1)
break;
else if (val == '?')
{
m_option_data.m_print_help = true;
error.SetErrorStringWithFormat ("unknown or ambiguous option");
break;
}
else if (val == 0)
continue;
else
{
m_option_data.m_seen_options.insert ((char) val);
if (long_options_index == -1)
{
for (int i = 0;
long_options[i].name || long_options[i].has_arg || long_options[i].flag || long_options[i].val;
++i)
{
if (long_options[i].val == val)
{
long_options_index = i;
break;
}
}
}
if (long_options_index >= 0)
{
const int short_option = g_options[long_options_index].short_option;
switch (short_option)
{
case 'h':
m_option_data.m_print_help = true;
break;
case 'v':
m_option_data.m_print_version = true;
break;
case 'P':
m_option_data.m_print_python_path = true;
break;
case 'c':
{
SBFileSpec file(optarg);
if (file.Exists())
{
m_option_data.m_core_file = optarg;
}
else
error.SetErrorStringWithFormat("file specified in --core (-c) option doesn't exist: '%s'", optarg);
}
break;
case 'e':
m_option_data.m_use_external_editor = true;
break;
case 'x':
m_debugger.SkipLLDBInitFiles (true);
m_debugger.SkipAppInitFiles (true);
break;
case 'o':
m_debugger.SetUseColor (false);
break;
case 'f':
{
SBFileSpec file(optarg);
if (file.Exists())
{
m_option_data.m_args.push_back (optarg);
}
else if (file.ResolveExecutableLocation())
{
char path[PATH_MAX];
file.GetPath (path, sizeof(path));
m_option_data.m_args.push_back (path);
}
else
error.SetErrorStringWithFormat("file specified in --file (-f) option doesn't exist: '%s'", optarg);
}
break;
case 'a':
if (!m_debugger.SetDefaultArchitecture (optarg))
error.SetErrorStringWithFormat("invalid architecture in the -a or --arch option: '%s'", optarg);
break;
case 'l':
m_option_data.m_script_lang = m_debugger.GetScriptingLanguage (optarg);
break;
case 'd':
m_option_data.m_debug_mode = true;
break;
case 'n':
m_option_data.m_process_name = optarg;
break;
case 'w':
m_option_data.m_wait_for = true;
break;
case 'p':
{
char *remainder;
m_option_data.m_process_pid = strtol (optarg, &remainder, 0);
if (remainder == optarg || *remainder != '\0')
error.SetErrorStringWithFormat ("Could not convert process PID: \"%s\" into a pid.",
optarg);
}
break;
case 's':
{
SBFileSpec file(optarg);
if (file.Exists())
m_option_data.m_source_command_files.push_back (optarg);
else if (file.ResolveExecutableLocation())
{
char final_path[PATH_MAX];
file.GetPath (final_path, sizeof(final_path));
std::string path_str (final_path);
m_option_data.m_source_command_files.push_back (path_str);
}
else
error.SetErrorStringWithFormat("file specified in --source (-s) option doesn't exist: '%s'", optarg);
}
break;
default:
m_option_data.m_print_help = true;
error.SetErrorStringWithFormat ("unrecognized option %c", short_option);
break;
}
}
else
{
error.SetErrorStringWithFormat ("invalid option with value %i", val);
}
if (error.Fail())
{
return error;
}
}
}
if (error.Fail() || m_option_data.m_print_help)
{
ShowUsage (out_fh, g_options, m_option_data);
exit = true;
}
else if (m_option_data.m_print_version)
{
::fprintf (out_fh, "%s\n", m_debugger.GetVersionString());
exit = true;
}
else if (m_option_data.m_print_python_path)
{
SBFileSpec python_file_spec = SBHostOS::GetLLDBPythonPath();
if (python_file_spec.IsValid())
{
char python_path[PATH_MAX];
size_t num_chars = python_file_spec.GetPath(python_path, PATH_MAX);
if (num_chars < PATH_MAX)
{
::fprintf (out_fh, "%s\n", python_path);
}
else
::fprintf (out_fh, "<PATH TOO LONG>\n");
}
else
::fprintf (out_fh, "<COULD NOT FIND PATH>\n");
exit = true;
}
else if (m_option_data.m_process_name.empty() && m_option_data.m_process_pid == LLDB_INVALID_PROCESS_ID)
{
// Any arguments that are left over after option parsing are for
// the program. If a file was specified with -f then the filename
// is already in the m_option_data.m_args array, and any remaining args
// are arguments for the inferior program. If no file was specified with
// -f, then what is left is the program name followed by any arguments.
// Skip any options we consumed with getopt_long_only
argc -= optind;
argv += optind;
if (argc > 0)
{
for (int arg_idx=0; arg_idx<argc; ++arg_idx)
{
const char *arg = argv[arg_idx];
if (arg)
m_option_data.m_args.push_back (arg);
}
}
}
else
{
// Skip any options we consumed with getopt_long_only
argc -= optind;
//argv += optind; // Commented out to keep static analyzer happy
if (argc > 0)
::fprintf (out_fh, "Warning: program arguments are ignored when attaching.\n");
}
return error;
}
size_t
Driver::GetProcessSTDOUT ()
{
// The process has stuff waiting for stdout; get it and write it out to the appropriate place.
char stdio_buffer[1024];
size_t len;
size_t total_bytes = 0;
while ((len = m_debugger.GetSelectedTarget().GetProcess().GetSTDOUT (stdio_buffer, sizeof (stdio_buffer))) > 0)
{
m_io_channel_ap->OutWrite (stdio_buffer, len, NO_ASYNC);
total_bytes += len;
}
return total_bytes;
}
size_t
Driver::GetProcessSTDERR ()
{
// The process has stuff waiting for stderr; get it and write it out to the appropriate place.
char stdio_buffer[1024];
size_t len;
size_t total_bytes = 0;
while ((len = m_debugger.GetSelectedTarget().GetProcess().GetSTDERR (stdio_buffer, sizeof (stdio_buffer))) > 0)
{
m_io_channel_ap->ErrWrite (stdio_buffer, len, NO_ASYNC);
total_bytes += len;
}
return total_bytes;
}
void
Driver::UpdateSelectedThread ()
{
using namespace lldb;
SBProcess process(m_debugger.GetSelectedTarget().GetProcess());
if (process.IsValid())
{
SBThread curr_thread (process.GetSelectedThread());
SBThread thread;
StopReason curr_thread_stop_reason = eStopReasonInvalid;
curr_thread_stop_reason = curr_thread.GetStopReason();
if (!curr_thread.IsValid() ||
curr_thread_stop_reason == eStopReasonInvalid ||
curr_thread_stop_reason == eStopReasonNone)
{
// Prefer a thread that has just completed its plan over another thread as current thread.
SBThread plan_thread;
SBThread other_thread;
const size_t num_threads = process.GetNumThreads();
size_t i;
for (i = 0; i < num_threads; ++i)
{
thread = process.GetThreadAtIndex(i);
StopReason thread_stop_reason = thread.GetStopReason();
switch (thread_stop_reason)
{
case eStopReasonInvalid:
case eStopReasonNone:
break;
case eStopReasonTrace:
case eStopReasonBreakpoint:
case eStopReasonWatchpoint:
case eStopReasonSignal:
case eStopReasonException:
case eStopReasonExec:
case eStopReasonThreadExiting:
if (!other_thread.IsValid())
other_thread = thread;
break;
case eStopReasonPlanComplete:
if (!plan_thread.IsValid())
plan_thread = thread;
break;
}
}
if (plan_thread.IsValid())
process.SetSelectedThread (plan_thread);
else if (other_thread.IsValid())
process.SetSelectedThread (other_thread);
else
{
if (curr_thread.IsValid())
thread = curr_thread;
else
thread = process.GetThreadAtIndex(0);
if (thread.IsValid())
process.SetSelectedThread (thread);
}
}
}
}
// This function handles events that were broadcast by the process.
void
Driver::HandleBreakpointEvent (const SBEvent &event)
{
using namespace lldb;
const uint32_t event_type = SBBreakpoint::GetBreakpointEventTypeFromEvent (event);
if (event_type & eBreakpointEventTypeAdded
|| event_type & eBreakpointEventTypeRemoved
|| event_type & eBreakpointEventTypeEnabled
|| event_type & eBreakpointEventTypeDisabled
|| event_type & eBreakpointEventTypeCommandChanged
|| event_type & eBreakpointEventTypeConditionChanged
|| event_type & eBreakpointEventTypeIgnoreChanged
|| event_type & eBreakpointEventTypeLocationsResolved)
{
// Don't do anything about these events, since the breakpoint commands already echo these actions.
}
else if (event_type & eBreakpointEventTypeLocationsAdded)
{
char message[256];
uint32_t num_new_locations = SBBreakpoint::GetNumBreakpointLocationsFromEvent(event);
if (num_new_locations > 0)
{
SBBreakpoint breakpoint = SBBreakpoint::GetBreakpointFromEvent(event);
int message_len = ::snprintf (message, sizeof(message), "%d location%s added to breakpoint %d\n",
num_new_locations,
num_new_locations == 1 ? "" : "s",
breakpoint.GetID());
m_io_channel_ap->OutWrite(message, message_len, ASYNC);
}
}
else if (event_type & eBreakpointEventTypeLocationsRemoved)
{
// These locations just get disabled, not sure it is worth spamming folks about this on the command line.
}
else if (event_type & eBreakpointEventTypeLocationsResolved)
{
// This might be an interesting thing to note, but I'm going to leave it quiet for now, it just looked noisy.
}
}
// This function handles events that were broadcast by the process.
void
Driver::HandleProcessEvent (const SBEvent &event)
{
using namespace lldb;
const uint32_t event_type = event.GetType();
if (event_type & SBProcess::eBroadcastBitSTDOUT)
{
// The process has stdout available, get it and write it out to the
// appropriate place.
GetProcessSTDOUT ();
}
else if (event_type & SBProcess::eBroadcastBitSTDERR)
{
// The process has stderr available, get it and write it out to the
// appropriate place.
GetProcessSTDERR ();
}
else if (event_type & SBProcess::eBroadcastBitStateChanged)
{
// Drain all stout and stderr so we don't see any output come after
// we print our prompts
GetProcessSTDOUT ();
GetProcessSTDERR ();
// Something changed in the process; get the event and report the process's current status and location to
// the user.
StateType event_state = SBProcess::GetStateFromEvent (event);
if (event_state == eStateInvalid)
return;
SBProcess process (SBProcess::GetProcessFromEvent (event));
assert (process.IsValid());
switch (event_state)
{
case eStateInvalid:
case eStateUnloaded:
case eStateConnected:
case eStateAttaching:
case eStateLaunching:
case eStateStepping:
case eStateDetached:
{
char message[1024];
int message_len = ::snprintf (message, sizeof(message), "Process %" PRIu64 " %s\n", process.GetProcessID(),
m_debugger.StateAsCString (event_state));
m_io_channel_ap->OutWrite(message, message_len, ASYNC);
}
break;
case eStateRunning:
// Don't be chatty when we run...
break;
case eStateExited:
{
SBCommandReturnObject result;
m_debugger.GetCommandInterpreter().HandleCommand("process status", result, false);
m_io_channel_ap->ErrWrite (result.GetError(), result.GetErrorSize(), ASYNC);
m_io_channel_ap->OutWrite (result.GetOutput(), result.GetOutputSize(), ASYNC);
}
break;
case eStateStopped:
case eStateCrashed:
case eStateSuspended:
// Make sure the program hasn't been auto-restarted:
if (SBProcess::GetRestartedFromEvent (event))
{
size_t num_reasons = SBProcess::GetNumRestartedReasonsFromEvent(event);
if (num_reasons > 0)
{
// FIXME: Do we want to report this, or would that just be annoyingly chatty?
if (num_reasons == 1)
{
char message[1024];
const char *reason = SBProcess::GetRestartedReasonAtIndexFromEvent (event, 0);
int message_len = ::snprintf (message, sizeof(message), "Process %" PRIu64 " stopped and restarted: %s\n",
process.GetProcessID(), reason ? reason : "<UNKNOWN REASON>");
m_io_channel_ap->OutWrite(message, message_len, ASYNC);
}
else
{
char message[1024];
int message_len = ::snprintf (message, sizeof(message), "Process %" PRIu64 " stopped and restarted, reasons:\n",
process.GetProcessID());
m_io_channel_ap->OutWrite(message, message_len, ASYNC);
for (size_t i = 0; i < num_reasons; i++)
{
const char *reason = SBProcess::GetRestartedReasonAtIndexFromEvent (event, i);
int message_len = ::snprintf(message, sizeof(message), "\t%s\n", reason ? reason : "<UNKNOWN REASON>");
m_io_channel_ap->OutWrite(message, message_len, ASYNC);
}
}
}
}
else
{
if (GetDebugger().GetSelectedTarget() == process.GetTarget())
{
SBCommandReturnObject result;
UpdateSelectedThread ();
m_debugger.GetCommandInterpreter().HandleCommand("process status", result, false);
m_io_channel_ap->ErrWrite (result.GetError(), result.GetErrorSize(), ASYNC);
m_io_channel_ap->OutWrite (result.GetOutput(), result.GetOutputSize(), ASYNC);
}
else
{
SBStream out_stream;
uint32_t target_idx = GetDebugger().GetIndexOfTarget(process.GetTarget());
if (target_idx != UINT32_MAX)
out_stream.Printf ("Target %d: (", target_idx);
else
out_stream.Printf ("Target <unknown index>: (");
process.GetTarget().GetDescription (out_stream, eDescriptionLevelBrief);
out_stream.Printf (") stopped.\n");
m_io_channel_ap->OutWrite (out_stream.GetData(), out_stream.GetSize(), ASYNC);
}
}
break;
}
}
}
void
Driver::HandleThreadEvent (const SBEvent &event)
{
// At present the only thread event we handle is the Frame Changed event, and all we do for that is just
// reprint the thread status for that thread.
using namespace lldb;
const uint32_t event_type = event.GetType();
if (event_type == SBThread::eBroadcastBitStackChanged
|| event_type == SBThread::eBroadcastBitThreadSelected)
{
SBThread thread = SBThread::GetThreadFromEvent (event);
if (thread.IsValid())
{
SBStream out_stream;
thread.GetStatus(out_stream);
m_io_channel_ap->OutWrite (out_stream.GetData (), out_stream.GetSize (), ASYNC);
}
}
}
// This function handles events broadcast by the IOChannel (HasInput, UserInterrupt, or ThreadShouldExit).
bool
Driver::HandleIOEvent (const SBEvent &event)
{
bool quit = false;
const uint32_t event_type = event.GetType();
if (event_type & IOChannel::eBroadcastBitHasUserInput)
{
// We got some input (i.e. a command string) from the user; pass it off to the command interpreter for
// handling.
const char *command_string = SBEvent::GetCStringFromEvent(event);
if (command_string == NULL)
command_string = "";
SBCommandReturnObject result;
// We don't want the result to bypass the OutWrite function in IOChannel, as this can result in odd
// output orderings and problems with the prompt.
// Note that we are in the process of executing a command
m_executing_user_command = true;
m_debugger.GetCommandInterpreter().HandleCommand (command_string, result, true);
// Note that we are back from executing a user command
m_executing_user_command = false;
// Display any STDOUT/STDERR _prior_ to emitting the command result text
GetProcessSTDOUT ();
GetProcessSTDERR ();
const bool only_if_no_immediate = true;
// Now emit the command output text from the command we just executed
const size_t output_size = result.GetOutputSize();
if (output_size > 0)
m_io_channel_ap->OutWrite (result.GetOutput(only_if_no_immediate), output_size, NO_ASYNC);
// Now emit the command error text from the command we just executed
const size_t error_size = result.GetErrorSize();
if (error_size > 0)
m_io_channel_ap->OutWrite (result.GetError(only_if_no_immediate), error_size, NO_ASYNC);
// We are done getting and running our command, we can now clear the
// m_waiting_for_command so we can get another one.
m_waiting_for_command = false;
// If our editline input reader is active, it means another input reader
// got pushed onto the input reader and caused us to become deactivated.
// When the input reader above us gets popped, we will get re-activated
// and our prompt will refresh in our callback
if (m_editline_reader.IsActive())
{
ReadyForCommand ();
}
}
else if (event_type & IOChannel::eBroadcastBitUserInterrupt)
{
// This is here to handle control-c interrupts from the user. It has not yet really been implemented.
// TO BE DONE: PROPERLY HANDLE CONTROL-C FROM USER
//m_io_channel_ap->CancelInput();
// Anything else? Send Interrupt to process?
}
else if ((event_type & IOChannel::eBroadcastBitThreadShouldExit) ||
(event_type & IOChannel::eBroadcastBitThreadDidExit))
{
// If the IOChannel thread is trying to go away, then it is definitely
// time to end the debugging session.
quit = true;
}
return quit;
}
void
Driver::MasterThreadBytesReceived (void *baton, const void *src, size_t src_len)
{
Driver *driver = (Driver*)baton;
driver->GetFromMaster ((const char *)src, src_len);
}
void
Driver::GetFromMaster (const char *src, size_t src_len)
{
// Echo the characters back to the Debugger's stdout, that way if you
// type characters while a command is running, you'll see what you've typed.
FILE *out_fh = m_debugger.GetOutputFileHandle();
if (out_fh)
::fwrite (src, 1, src_len, out_fh);
}
size_t
Driver::EditLineInputReaderCallback
(
void *baton,
SBInputReader *reader,
InputReaderAction notification,
const char *bytes,
size_t bytes_len
)
{
Driver *driver = (Driver *)baton;
switch (notification)
{
case eInputReaderActivate:
break;
case eInputReaderReactivate:
if (driver->m_executing_user_command == false)
driver->ReadyForCommand();
break;
case eInputReaderDeactivate:
break;
case eInputReaderAsynchronousOutputWritten:
if (driver->m_io_channel_ap.get() != NULL)
driver->m_io_channel_ap->RefreshPrompt();
break;
case eInputReaderInterrupt:
if (driver->m_io_channel_ap.get() != NULL)
{
SBProcess process(driver->GetDebugger().GetSelectedTarget().GetProcess());
if (!driver->m_io_channel_ap->EditLineHasCharacters()
&& process.IsValid()
&& (process.GetState() == lldb::eStateRunning || process.GetState() == lldb::eStateAttaching))
{
process.SendAsyncInterrupt ();
}
else
{
driver->m_io_channel_ap->OutWrite ("^C\n", 3, NO_ASYNC);
// I wish I could erase the entire input line, but there's no public API for that.
driver->m_io_channel_ap->EraseCharsBeforeCursor();
driver->m_io_channel_ap->RefreshPrompt();
}
}
break;
case eInputReaderEndOfFile:
if (driver->m_io_channel_ap.get() != NULL)
{
driver->m_io_channel_ap->OutWrite ("^D\n", 3, NO_ASYNC);
driver->m_io_channel_ap->RefreshPrompt ();
}
write (driver->m_editline_pty.GetMasterFileDescriptor(), "quit\n", 5);
break;
case eInputReaderGotToken:
write (driver->m_editline_pty.GetMasterFileDescriptor(), bytes, bytes_len);
break;
case eInputReaderDone:
break;
}
return bytes_len;
}
void
Driver::MainLoop ()
{
char error_str[1024];
if (m_editline_pty.OpenFirstAvailableMaster(O_RDWR|O_NOCTTY, error_str, sizeof(error_str)) == false)
{
::fprintf (stderr, "error: failed to open driver pseudo terminal : %s", error_str);
exit(1);
}
else
{
const char *driver_slave_name = m_editline_pty.GetSlaveName (error_str, sizeof(error_str));
if (driver_slave_name == NULL)
{
::fprintf (stderr, "error: failed to get slave name for driver pseudo terminal : %s", error_str);
exit(2);
}
else
{
m_editline_slave_fh = ::fopen (driver_slave_name, "r+");
if (m_editline_slave_fh == NULL)
{
SBError error;
error.SetErrorToErrno();
::fprintf (stderr, "error: failed to get open slave for driver pseudo terminal : %s",
error.GetCString());
exit(3);
}
::setbuf (m_editline_slave_fh, NULL);
}
}
lldb_utility::PseudoTerminal editline_output_pty;
FILE *editline_output_slave_fh = NULL;
if (editline_output_pty.OpenFirstAvailableMaster (O_RDWR|O_NOCTTY, error_str, sizeof (error_str)) == false)
{
::fprintf (stderr, "error: failed to open output pseudo terminal : %s", error_str);
exit(1);
}
else
{
const char *output_slave_name = editline_output_pty.GetSlaveName (error_str, sizeof(error_str));
if (output_slave_name == NULL)
{
::fprintf (stderr, "error: failed to get slave name for output pseudo terminal : %s", error_str);
exit(2);
}
else
{
editline_output_slave_fh = ::fopen (output_slave_name, "r+");
if (editline_output_slave_fh == NULL)
{
SBError error;
error.SetErrorToErrno();
::fprintf (stderr, "error: failed to get open slave for output pseudo terminal : %s",
error.GetCString());
exit(3);
}
::setbuf (editline_output_slave_fh, NULL);
}
}
// struct termios stdin_termios;
if (::tcgetattr(STDIN_FILENO, &g_old_stdin_termios) == 0)
{
g_old_stdin_termios_is_valid = true;
atexit (reset_stdin_termios);
}
::setbuf (stdin, NULL);
::setbuf (stdout, NULL);
m_debugger.SetErrorFileHandle (stderr, false);
m_debugger.SetOutputFileHandle (stdout, false);
m_debugger.SetInputFileHandle (stdin, true);
m_debugger.SetUseExternalEditor(m_option_data.m_use_external_editor);
// You have to drain anything that comes to the master side of the PTY. master_out_comm is
// for that purpose. The reason you need to do this is a curious reason... editline will echo
// characters to the PTY when it gets characters while el_gets is not running, and then when
// you call el_gets (or el_getc) it will try to reset the terminal back to raw mode which blocks
// if there are unconsumed characters in the out buffer.
// However, you don't need to do anything with the characters, since editline will dump these
// unconsumed characters after printing the prompt again in el_gets.
SBCommunication master_out_comm("driver.editline");
master_out_comm.SetCloseOnEOF (false);
master_out_comm.AdoptFileDesriptor(m_editline_pty.GetMasterFileDescriptor(), false);
master_out_comm.SetReadThreadBytesReceivedCallback(Driver::MasterThreadBytesReceived, this);
if (master_out_comm.ReadThreadStart () == false)
{
::fprintf (stderr, "error: failed to start master out read thread");
exit(5);
}
SBCommandInterpreter sb_interpreter = m_debugger.GetCommandInterpreter();
m_io_channel_ap.reset (new IOChannel(m_editline_slave_fh, editline_output_slave_fh, stdout, stderr, this));
SBCommunication out_comm_2("driver.editline_output");
out_comm_2.SetCloseOnEOF (false);
out_comm_2.AdoptFileDesriptor (editline_output_pty.GetMasterFileDescriptor(), false);
out_comm_2.SetReadThreadBytesReceivedCallback (IOChannel::LibeditOutputBytesReceived, m_io_channel_ap.get());
if (out_comm_2.ReadThreadStart () == false)
{
::fprintf (stderr, "error: failed to start libedit output read thread");
exit (5);
}
struct winsize window_size;
if (isatty (STDIN_FILENO)
&& ::ioctl (STDIN_FILENO, TIOCGWINSZ, &window_size) == 0)
{
if (window_size.ws_col > 0)
m_debugger.SetTerminalWidth (window_size.ws_col);
}
// Since input can be redirected by the debugger, we must insert our editline
// input reader in the queue so we know when our reader should be active
// and so we can receive bytes only when we are supposed to.
SBError err (m_editline_reader.Initialize (m_debugger,
Driver::EditLineInputReaderCallback, // callback
this, // baton
eInputReaderGranularityByte, // token_size
NULL, // end token - NULL means never done
NULL, // prompt - taken care of elsewhere
false)); // echo input - don't need Debugger
// to do this, we handle it elsewhere
if (err.Fail())
{
::fprintf (stderr, "error: %s", err.GetCString());
exit (6);
}
m_debugger.PushInputReader (m_editline_reader);
SBListener listener(m_debugger.GetListener());
if (listener.IsValid())
{
listener.StartListeningForEventClass(m_debugger,
SBTarget::GetBroadcasterClassName(),
SBTarget::eBroadcastBitBreakpointChanged);
listener.StartListeningForEventClass(m_debugger,
SBThread::GetBroadcasterClassName(),
SBThread::eBroadcastBitStackChanged |
SBThread::eBroadcastBitThreadSelected);
listener.StartListeningForEvents (*m_io_channel_ap,
IOChannel::eBroadcastBitHasUserInput |
IOChannel::eBroadcastBitUserInterrupt |
IOChannel::eBroadcastBitThreadShouldExit |
IOChannel::eBroadcastBitThreadDidStart |
IOChannel::eBroadcastBitThreadDidExit);
if (m_io_channel_ap->Start ())
{
bool iochannel_thread_exited = false;
listener.StartListeningForEvents (sb_interpreter.GetBroadcaster(),
SBCommandInterpreter::eBroadcastBitQuitCommandReceived |
SBCommandInterpreter::eBroadcastBitAsynchronousOutputData |
SBCommandInterpreter::eBroadcastBitAsynchronousErrorData);
// Before we handle any options from the command line, we parse the
// .lldbinit file in the user's home directory.
SBCommandReturnObject result;
sb_interpreter.SourceInitFileInHomeDirectory(result);
if (GetDebugMode())
{
result.PutError (m_debugger.GetErrorFileHandle());
result.PutOutput (m_debugger.GetOutputFileHandle());
}
// Now we handle options we got from the command line
char command_string[PATH_MAX * 2];
const size_t num_source_command_files = GetNumSourceCommandFiles();
const bool dump_stream_only_if_no_immediate = true;
if (num_source_command_files > 0)
{
for (size_t i=0; i < num_source_command_files; ++i)
{
const char *command_file = GetSourceCommandFileAtIndex(i);
::snprintf (command_string, sizeof(command_string), "command source '%s'", command_file);
m_debugger.GetCommandInterpreter().HandleCommand (command_string, result, false);
if (GetDebugMode())
{
result.PutError (m_debugger.GetErrorFileHandle());
result.PutOutput (m_debugger.GetOutputFileHandle());
}
// if the command sourcing generated an error - dump the result object
if (result.Succeeded() == false)
{
const size_t output_size = result.GetOutputSize();
if (output_size > 0)
m_io_channel_ap->OutWrite (result.GetOutput(dump_stream_only_if_no_immediate), output_size, NO_ASYNC);
const size_t error_size = result.GetErrorSize();
if (error_size > 0)
m_io_channel_ap->OutWrite (result.GetError(dump_stream_only_if_no_immediate), error_size, NO_ASYNC);
}
result.Clear();
}
}
// Was there a core file specified?
std::string core_file_spec("");
if (!m_option_data.m_core_file.empty())
core_file_spec.append("--core ").append(m_option_data.m_core_file);
const size_t num_args = m_option_data.m_args.size();
if (num_args > 0)
{
char arch_name[64];
if (m_debugger.GetDefaultArchitecture (arch_name, sizeof (arch_name)))
::snprintf (command_string,
sizeof (command_string),
"target create --arch=%s %s \"%s\"",
arch_name,
core_file_spec.c_str(),
m_option_data.m_args[0].c_str());
else
::snprintf (command_string,
sizeof(command_string),
"target create %s \"%s\"",
core_file_spec.c_str(),
m_option_data.m_args[0].c_str());
m_debugger.HandleCommand (command_string);
if (num_args > 1)
{
m_debugger.HandleCommand ("settings clear target.run-args");
char arg_cstr[1024];
for (size_t arg_idx = 1; arg_idx < num_args; ++arg_idx)
{
::snprintf (arg_cstr,
sizeof(arg_cstr),
"settings append target.run-args \"%s\"",
m_option_data.m_args[arg_idx].c_str());
m_debugger.HandleCommand (arg_cstr);
}
}
}
else if (!core_file_spec.empty())
{
::snprintf (command_string,
sizeof(command_string),
"target create %s",
core_file_spec.c_str());
m_debugger.HandleCommand (command_string);;
}
// Now that all option parsing is done, we try and parse the .lldbinit
// file in the current working directory
sb_interpreter.SourceInitFileInCurrentWorkingDirectory (result);
if (GetDebugMode())
{
result.PutError(m_debugger.GetErrorFileHandle());
result.PutOutput(m_debugger.GetOutputFileHandle());
}
SBEvent event;
// Make sure the IO channel is started up before we try to tell it we
// are ready for input
listener.WaitForEventForBroadcasterWithType (UINT32_MAX,
*m_io_channel_ap,
IOChannel::eBroadcastBitThreadDidStart,
event);
// If we were asked to attach, then do that here:
// I'm going to use the command string rather than directly
// calling the API's because then I don't have to recode the
// event handling here.
if (!m_option_data.m_process_name.empty()
|| m_option_data.m_process_pid != LLDB_INVALID_PROCESS_ID)
{
std::string command_str("process attach ");
if (m_option_data.m_process_pid != LLDB_INVALID_PROCESS_ID)
{
command_str.append("-p ");
char pid_buffer[32];
::snprintf (pid_buffer, sizeof(pid_buffer), "%" PRIu64, m_option_data.m_process_pid);
command_str.append(pid_buffer);
}
else
{
command_str.append("-n \"");
command_str.append(m_option_data.m_process_name);
command_str.push_back('\"');
if (m_option_data.m_wait_for)
command_str.append(" -w");
}
if (m_debugger.GetOutputFileHandle())
::fprintf (m_debugger.GetOutputFileHandle(),
"Attaching to process with:\n %s\n",
command_str.c_str());
// Force the attach to be synchronous:
bool orig_async = m_debugger.GetAsync();
m_debugger.SetAsync(true);
m_debugger.HandleCommand(command_str.c_str());
m_debugger.SetAsync(orig_async);
}
ReadyForCommand ();
while (!GetIsDone())
{
listener.WaitForEvent (UINT32_MAX, event);
if (event.IsValid())
{
if (event.GetBroadcaster().IsValid())
{
uint32_t event_type = event.GetType();
if (event.BroadcasterMatchesRef (*m_io_channel_ap))
{
if ((event_type & IOChannel::eBroadcastBitThreadShouldExit) ||
(event_type & IOChannel::eBroadcastBitThreadDidExit))
{
SetIsDone();
if (event_type & IOChannel::eBroadcastBitThreadDidExit)
iochannel_thread_exited = true;
}
else
{
if (HandleIOEvent (event))
SetIsDone();
}
}
else if (SBProcess::EventIsProcessEvent (event))
{
HandleProcessEvent (event);
}
else if (SBBreakpoint::EventIsBreakpointEvent (event))
{
HandleBreakpointEvent (event);
}
else if (SBThread::EventIsThreadEvent (event))
{
HandleThreadEvent (event);
}
else if (event.BroadcasterMatchesRef (sb_interpreter.GetBroadcaster()))
{
// TODO: deprecate the eBroadcastBitQuitCommandReceived event
// now that we have SBCommandInterpreter::SetCommandOverrideCallback()
// that can take over a command
if (event_type & SBCommandInterpreter::eBroadcastBitQuitCommandReceived)
{
SetIsDone();
}
else if (event_type & SBCommandInterpreter::eBroadcastBitAsynchronousErrorData)
{
const char *data = SBEvent::GetCStringFromEvent (event);
m_io_channel_ap->ErrWrite (data, strlen(data), ASYNC);
}
else if (event_type & SBCommandInterpreter::eBroadcastBitAsynchronousOutputData)
{
const char *data = SBEvent::GetCStringFromEvent (event);
m_io_channel_ap->OutWrite (data, strlen(data), ASYNC);
}
}
}
}
}
master_out_comm.SetReadThreadBytesReceivedCallback(NULL, NULL);
master_out_comm.Disconnect();
master_out_comm.ReadThreadStop();
out_comm_2.SetReadThreadBytesReceivedCallback(NULL, NULL);
out_comm_2.Disconnect();
out_comm_2.ReadThreadStop();
editline_output_pty.CloseMasterFileDescriptor();
reset_stdin_termios();
fclose (stdin);
CloseIOChannelFile ();
if (!iochannel_thread_exited)
{
event.Clear();
listener.GetNextEventForBroadcasterWithType (*m_io_channel_ap,
IOChannel::eBroadcastBitThreadDidExit,
event);
if (!event.IsValid())
{
// Send end EOF to the driver file descriptor
m_io_channel_ap->Stop();
}
}
SBDebugger::Destroy (m_debugger);
}
}
}
void
Driver::ReadyForCommand ()
{
if (m_waiting_for_command == false)
{
m_waiting_for_command = true;
BroadcastEventByType (Driver::eBroadcastBitReadyForInput, true);
}
}
void
Driver::ResizeWindow (unsigned short col)
{
GetDebugger().SetTerminalWidth (col);
if (m_io_channel_ap.get() != NULL)
{
m_io_channel_ap->ElResize();
}
}
void
sigwinch_handler (int signo)
{
struct winsize window_size;
if (isatty (STDIN_FILENO)
&& ::ioctl (STDIN_FILENO, TIOCGWINSZ, &window_size) == 0)
{
if ((window_size.ws_col > 0) && g_driver != NULL)
{
g_driver->ResizeWindow (window_size.ws_col);
}
}
}
void
sigint_handler (int signo)
{
static bool g_interrupt_sent = false;
if (g_driver)
{
if (!g_interrupt_sent)
{
g_interrupt_sent = true;
g_driver->GetDebugger().DispatchInputInterrupt();
g_interrupt_sent = false;
return;
}
}
exit (signo);
}
void
sigtstp_handler (int signo)
{
g_driver->GetDebugger().SaveInputTerminalState();
signal (signo, SIG_DFL);
kill (getpid(), signo);
signal (signo, sigtstp_handler);
}
void
sigcont_handler (int signo)
{
g_driver->GetDebugger().RestoreInputTerminalState();
signal (signo, SIG_DFL);
kill (getpid(), signo);
signal (signo, sigcont_handler);
}
int
main (int argc, char const *argv[], const char *envp[])
{
SBDebugger::Initialize();
SBHostOS::ThreadCreated ("<lldb.driver.main-thread>");
signal (SIGPIPE, SIG_IGN);
signal (SIGWINCH, sigwinch_handler);
signal (SIGINT, sigint_handler);
signal (SIGTSTP, sigtstp_handler);
signal (SIGCONT, sigcont_handler);
// Create a scope for driver so that the driver object will destroy itself
// before SBDebugger::Terminate() is called.
{
Driver driver;
bool exit = false;
SBError error (driver.ParseArgs (argc, argv, stdout, exit));
if (error.Fail())
{
const char *error_cstr = error.GetCString ();
if (error_cstr)
::fprintf (stderr, "error: %s\n", error_cstr);
}
else if (!exit)
{
driver.MainLoop ();
}
}
SBDebugger::Terminate();
return 0;
}
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