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llvm-capstone/lldb/source/Commands/CommandObjectProcess.cpp
Kate Stone b9c1b51e45 *** This commit represents a complete reformatting of the LLDB source code 
*** to conform to clang-format’s LLVM style.  This kind of mass change has
*** two obvious implications:

Firstly, merging this particular commit into a downstream fork may be a huge
effort.  Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit.  The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):

    find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
    find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;

The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.

Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit.  There are alternatives available that will attempt
to look through this change and find the appropriate prior commit.  YMMV.

llvm-svn: 280751
2016-09-06 20:57:50 +00:00

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//===-- CommandObjectProcess.cpp --------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "CommandObjectProcess.h"
#include "lldb/Breakpoint/Breakpoint.h"
#include "lldb/Breakpoint/BreakpointLocation.h"
#include "lldb/Breakpoint/BreakpointSite.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/State.h"
#include "lldb/Host/Host.h"
#include "lldb/Host/StringConvert.h"
#include "lldb/Interpreter/Args.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Interpreter/CommandReturnObject.h"
#include "lldb/Interpreter/Options.h"
#include "lldb/Target/Platform.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/StopInfo.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
#include "lldb/Target/UnixSignals.h"
using namespace lldb;
using namespace lldb_private;
class CommandObjectProcessLaunchOrAttach : public CommandObjectParsed {
public:
CommandObjectProcessLaunchOrAttach(CommandInterpreter &interpreter,
const char *name, const char *help,
const char *syntax, uint32_t flags,
const char *new_process_action)
: CommandObjectParsed(interpreter, name, help, syntax, flags),
m_new_process_action(new_process_action) {}
~CommandObjectProcessLaunchOrAttach() override = default;
protected:
bool StopProcessIfNecessary(Process *process, StateType &state,
CommandReturnObject &result) {
state = eStateInvalid;
if (process) {
state = process->GetState();
if (process->IsAlive() && state != eStateConnected) {
char message[1024];
if (process->GetState() == eStateAttaching)
::snprintf(message, sizeof(message),
"There is a pending attach, abort it and %s?",
m_new_process_action.c_str());
else if (process->GetShouldDetach())
::snprintf(message, sizeof(message),
"There is a running process, detach from it and %s?",
m_new_process_action.c_str());
else
::snprintf(message, sizeof(message),
"There is a running process, kill it and %s?",
m_new_process_action.c_str());
if (!m_interpreter.Confirm(message, true)) {
result.SetStatus(eReturnStatusFailed);
return false;
} else {
if (process->GetShouldDetach()) {
bool keep_stopped = false;
Error detach_error(process->Detach(keep_stopped));
if (detach_error.Success()) {
result.SetStatus(eReturnStatusSuccessFinishResult);
process = nullptr;
} else {
result.AppendErrorWithFormat(
"Failed to detach from process: %s\n",
detach_error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
} else {
Error destroy_error(process->Destroy(false));
if (destroy_error.Success()) {
result.SetStatus(eReturnStatusSuccessFinishResult);
process = nullptr;
} else {
result.AppendErrorWithFormat("Failed to kill process: %s\n",
destroy_error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
}
}
}
}
return result.Succeeded();
}
std::string m_new_process_action;
};
//-------------------------------------------------------------------------
// CommandObjectProcessLaunch
//-------------------------------------------------------------------------
#pragma mark CommandObjectProcessLaunch
class CommandObjectProcessLaunch : public CommandObjectProcessLaunchOrAttach {
public:
CommandObjectProcessLaunch(CommandInterpreter &interpreter)
: CommandObjectProcessLaunchOrAttach(
interpreter, "process launch",
"Launch the executable in the debugger.", nullptr,
eCommandRequiresTarget, "restart"),
m_options() {
CommandArgumentEntry arg;
CommandArgumentData run_args_arg;
// Define the first (and only) variant of this arg.
run_args_arg.arg_type = eArgTypeRunArgs;
run_args_arg.arg_repetition = eArgRepeatOptional;
// There is only one variant this argument could be; put it into the
// argument entry.
arg.push_back(run_args_arg);
// Push the data for the first argument into the m_arguments vector.
m_arguments.push_back(arg);
}
~CommandObjectProcessLaunch() override = default;
int HandleArgumentCompletion(Args &input, int &cursor_index,
int &cursor_char_position,
OptionElementVector &opt_element_vector,
int match_start_point, int max_return_elements,
bool &word_complete,
StringList &matches) override {
std::string completion_str(input.GetArgumentAtIndex(cursor_index));
completion_str.erase(cursor_char_position);
CommandCompletions::InvokeCommonCompletionCallbacks(
GetCommandInterpreter(), CommandCompletions::eDiskFileCompletion,
completion_str.c_str(), match_start_point, max_return_elements, nullptr,
word_complete, matches);
return matches.GetSize();
}
Options *GetOptions() override { return &m_options; }
const char *GetRepeatCommand(Args &current_command_args,
uint32_t index) override {
// No repeat for "process launch"...
return "";
}
protected:
bool DoExecute(Args &launch_args, CommandReturnObject &result) override {
Debugger &debugger = m_interpreter.GetDebugger();
Target *target = debugger.GetSelectedTarget().get();
// If our listener is nullptr, users aren't allows to launch
ModuleSP exe_module_sp = target->GetExecutableModule();
if (exe_module_sp == nullptr) {
result.AppendError("no file in target, create a debug target using the "
"'target create' command");
result.SetStatus(eReturnStatusFailed);
return false;
}
StateType state = eStateInvalid;
if (!StopProcessIfNecessary(m_exe_ctx.GetProcessPtr(), state, result))
return false;
const char *target_settings_argv0 = target->GetArg0();
// Determine whether we will disable ASLR or leave it in the default state
// (i.e. enabled if the platform supports it).
// First check if the process launch options explicitly turn on/off
// disabling ASLR. If so, use that setting;
// otherwise, use the 'settings target.disable-aslr' setting.
bool disable_aslr = false;
if (m_options.disable_aslr != eLazyBoolCalculate) {
// The user specified an explicit setting on the process launch line. Use
// it.
disable_aslr = (m_options.disable_aslr == eLazyBoolYes);
} else {
// The user did not explicitly specify whether to disable ASLR. Fall back
// to the target.disable-aslr setting.
disable_aslr = target->GetDisableASLR();
}
if (disable_aslr)
m_options.launch_info.GetFlags().Set(eLaunchFlagDisableASLR);
else
m_options.launch_info.GetFlags().Clear(eLaunchFlagDisableASLR);
if (target->GetDetachOnError())
m_options.launch_info.GetFlags().Set(eLaunchFlagDetachOnError);
if (target->GetDisableSTDIO())
m_options.launch_info.GetFlags().Set(eLaunchFlagDisableSTDIO);
Args environment;
target->GetEnvironmentAsArgs(environment);
if (environment.GetArgumentCount() > 0)
m_options.launch_info.GetEnvironmentEntries().AppendArguments(
environment);
if (target_settings_argv0) {
m_options.launch_info.GetArguments().AppendArgument(
target_settings_argv0);
m_options.launch_info.SetExecutableFile(
exe_module_sp->GetPlatformFileSpec(), false);
} else {
m_options.launch_info.SetExecutableFile(
exe_module_sp->GetPlatformFileSpec(), true);
}
if (launch_args.GetArgumentCount() == 0) {
m_options.launch_info.GetArguments().AppendArguments(
target->GetProcessLaunchInfo().GetArguments());
} else {
m_options.launch_info.GetArguments().AppendArguments(launch_args);
// Save the arguments for subsequent runs in the current target.
target->SetRunArguments(launch_args);
}
StreamString stream;
Error error = target->Launch(m_options.launch_info, &stream);
if (error.Success()) {
ProcessSP process_sp(target->GetProcessSP());
if (process_sp) {
// There is a race condition where this thread will return up the call
// stack to the main command
// handler and show an (lldb) prompt before HandlePrivateEvent (from
// PrivateStateThread) has
// a chance to call PushProcessIOHandler().
process_sp->SyncIOHandler(0, 2000);
const char *data = stream.GetData();
if (data && strlen(data) > 0)
result.AppendMessage(stream.GetData());
const char *archname =
exe_module_sp->GetArchitecture().GetArchitectureName();
result.AppendMessageWithFormat(
"Process %" PRIu64 " launched: '%s' (%s)\n", process_sp->GetID(),
exe_module_sp->GetFileSpec().GetPath().c_str(), archname);
result.SetStatus(eReturnStatusSuccessFinishResult);
result.SetDidChangeProcessState(true);
} else {
result.AppendError(
"no error returned from Target::Launch, and target has no process");
result.SetStatus(eReturnStatusFailed);
}
} else {
result.AppendError(error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
return result.Succeeded();
}
protected:
ProcessLaunchCommandOptions m_options;
};
//#define SET1 LLDB_OPT_SET_1
//#define SET2 LLDB_OPT_SET_2
//#define SET3 LLDB_OPT_SET_3
//
// OptionDefinition
// CommandObjectProcessLaunch::CommandOptions::g_option_table[] =
//{
// // clang-format off
// {SET1 | SET2 | SET3, false, "stop-at-entry", 's', OptionParser::eNoArgument,
// nullptr, 0, eArgTypeNone, "Stop at the entry point of the program
// when launching a process."},
// {SET1, false, "stdin", 'i',
// OptionParser::eRequiredArgument, nullptr, 0, eArgTypeDirectoryName,
// "Redirect stdin for the process to <path>."},
// {SET1, false, "stdout", 'o',
// OptionParser::eRequiredArgument, nullptr, 0, eArgTypeDirectoryName,
// "Redirect stdout for the process to <path>."},
// {SET1, false, "stderr", 'e',
// OptionParser::eRequiredArgument, nullptr, 0, eArgTypeDirectoryName,
// "Redirect stderr for the process to <path>."},
// {SET1 | SET2 | SET3, false, "plugin", 'p',
// OptionParser::eRequiredArgument, nullptr, 0, eArgTypePlugin, "Name of
// the process plugin you want to use."},
// { SET2, false, "tty", 't',
// OptionParser::eOptionalArgument, nullptr, 0, eArgTypeDirectoryName, "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."},
// { SET3, false, "no-stdio", 'n', OptionParser::eNoArgument,
// nullptr, 0, eArgTypeNone, "Do not set up for terminal I/O to go to
// running process."},
// {SET1 | SET2 | SET3, false, "working-dir", 'w',
// OptionParser::eRequiredArgument, nullptr, 0, eArgTypeDirectoryName, "Set the
// current working directory to <path> when running the inferior."},
// {0, false, nullptr, 0, 0, nullptr, 0, eArgTypeNone, nullptr}
// // clang-format on
//};
//
//#undef SET1
//#undef SET2
//#undef SET3
//-------------------------------------------------------------------------
// CommandObjectProcessAttach
//-------------------------------------------------------------------------
#pragma mark CommandObjectProcessAttach
class CommandObjectProcessAttach : public CommandObjectProcessLaunchOrAttach {
public:
class CommandOptions : public Options {
public:
CommandOptions() : Options() {
// Keep default values of all options in one place: OptionParsingStarting
// ()
OptionParsingStarting(nullptr);
}
~CommandOptions() override = default;
Error SetOptionValue(uint32_t option_idx, const char *option_arg,
ExecutionContext *execution_context) override {
Error error;
const int short_option = m_getopt_table[option_idx].val;
bool success = false;
switch (short_option) {
case 'c':
attach_info.SetContinueOnceAttached(true);
break;
case 'p': {
lldb::pid_t pid = StringConvert::ToUInt32(
option_arg, LLDB_INVALID_PROCESS_ID, 0, &success);
if (!success || pid == LLDB_INVALID_PROCESS_ID) {
error.SetErrorStringWithFormat("invalid process ID '%s'", option_arg);
} else {
attach_info.SetProcessID(pid);
}
} break;
case 'P':
attach_info.SetProcessPluginName(option_arg);
break;
case 'n':
attach_info.GetExecutableFile().SetFile(option_arg, false);
break;
case 'w':
attach_info.SetWaitForLaunch(true);
break;
case 'i':
attach_info.SetIgnoreExisting(false);
break;
default:
error.SetErrorStringWithFormat("invalid short option character '%c'",
short_option);
break;
}
return error;
}
void OptionParsingStarting(ExecutionContext *execution_context) override {
attach_info.Clear();
}
const OptionDefinition *GetDefinitions() override { return g_option_table; }
bool HandleOptionArgumentCompletion(
Args &input, int cursor_index, int char_pos,
OptionElementVector &opt_element_vector, int opt_element_index,
int match_start_point, int max_return_elements,
CommandInterpreter &interpreter, bool &word_complete,
StringList &matches) override {
int opt_arg_pos = opt_element_vector[opt_element_index].opt_arg_pos;
int opt_defs_index = opt_element_vector[opt_element_index].opt_defs_index;
// We are only completing the name option for now...
const OptionDefinition *opt_defs = GetDefinitions();
if (opt_defs[opt_defs_index].short_option == 'n') {
// Are we in the name?
// Look to see if there is a -P argument provided, and if so use that
// plugin, otherwise
// use the default plugin.
const char *partial_name = nullptr;
partial_name = input.GetArgumentAtIndex(opt_arg_pos);
PlatformSP platform_sp(interpreter.GetPlatform(true));
if (platform_sp) {
ProcessInstanceInfoList process_infos;
ProcessInstanceInfoMatch match_info;
if (partial_name) {
match_info.GetProcessInfo().GetExecutableFile().SetFile(
partial_name, false);
match_info.SetNameMatchType(eNameMatchStartsWith);
}
platform_sp->FindProcesses(match_info, process_infos);
const size_t num_matches = process_infos.GetSize();
if (num_matches > 0) {
for (size_t i = 0; i < num_matches; ++i) {
matches.AppendString(
process_infos.GetProcessNameAtIndex(i),
process_infos.GetProcessNameLengthAtIndex(i));
}
}
}
}
return false;
}
// Options table: Required for subclasses of Options.
static OptionDefinition g_option_table[];
// Instance variables to hold the values for command options.
ProcessAttachInfo attach_info;
};
CommandObjectProcessAttach(CommandInterpreter &interpreter)
: CommandObjectProcessLaunchOrAttach(
interpreter, "process attach", "Attach to a process.",
"process attach <cmd-options>", 0, "attach"),
m_options() {}
~CommandObjectProcessAttach() override = default;
Options *GetOptions() override { return &m_options; }
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
PlatformSP platform_sp(
m_interpreter.GetDebugger().GetPlatformList().GetSelectedPlatform());
Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
// N.B. The attach should be synchronous. It doesn't help much to get the
// prompt back between initiating the attach
// and the target actually stopping. So even if the interpreter is set to
// be asynchronous, we wait for the stop
// ourselves here.
StateType state = eStateInvalid;
Process *process = m_exe_ctx.GetProcessPtr();
if (!StopProcessIfNecessary(process, state, result))
return false;
if (target == nullptr) {
// If there isn't a current target create one.
TargetSP new_target_sp;
Error error;
error = m_interpreter.GetDebugger().GetTargetList().CreateTarget(
m_interpreter.GetDebugger(), nullptr, nullptr, false,
nullptr, // No platform options
new_target_sp);
target = new_target_sp.get();
if (target == nullptr || error.Fail()) {
result.AppendError(error.AsCString("Error creating target"));
return false;
}
m_interpreter.GetDebugger().GetTargetList().SetSelectedTarget(target);
}
// Record the old executable module, we want to issue a warning if the
// process of attaching changed the
// current executable (like somebody said "file foo" then attached to a PID
// whose executable was bar.)
ModuleSP old_exec_module_sp = target->GetExecutableModule();
ArchSpec old_arch_spec = target->GetArchitecture();
if (command.GetArgumentCount()) {
result.AppendErrorWithFormat("Invalid arguments for '%s'.\nUsage: %s\n",
m_cmd_name.c_str(), m_cmd_syntax.c_str());
result.SetStatus(eReturnStatusFailed);
return false;
}
m_interpreter.UpdateExecutionContext(nullptr);
StreamString stream;
const auto error = target->Attach(m_options.attach_info, &stream);
if (error.Success()) {
ProcessSP process_sp(target->GetProcessSP());
if (process_sp) {
if (stream.GetData())
result.AppendMessage(stream.GetData());
result.SetStatus(eReturnStatusSuccessFinishNoResult);
result.SetDidChangeProcessState(true);
result.SetAbnormalStopWasExpected(true);
} else {
result.AppendError(
"no error returned from Target::Attach, and target has no process");
result.SetStatus(eReturnStatusFailed);
}
} else {
result.AppendErrorWithFormat("attach failed: %s\n", error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
if (!result.Succeeded())
return false;
// Okay, we're done. Last step is to warn if the executable module has
// changed:
char new_path[PATH_MAX];
ModuleSP new_exec_module_sp(target->GetExecutableModule());
if (!old_exec_module_sp) {
// We might not have a module if we attached to a raw pid...
if (new_exec_module_sp) {
new_exec_module_sp->GetFileSpec().GetPath(new_path, PATH_MAX);
result.AppendMessageWithFormat("Executable module set to \"%s\".\n",
new_path);
}
} else if (old_exec_module_sp->GetFileSpec() !=
new_exec_module_sp->GetFileSpec()) {
char old_path[PATH_MAX];
old_exec_module_sp->GetFileSpec().GetPath(old_path, PATH_MAX);
new_exec_module_sp->GetFileSpec().GetPath(new_path, PATH_MAX);
result.AppendWarningWithFormat(
"Executable module changed from \"%s\" to \"%s\".\n", old_path,
new_path);
}
if (!old_arch_spec.IsValid()) {
result.AppendMessageWithFormat(
"Architecture set to: %s.\n",
target->GetArchitecture().GetTriple().getTriple().c_str());
} else if (!old_arch_spec.IsExactMatch(target->GetArchitecture())) {
result.AppendWarningWithFormat(
"Architecture changed from %s to %s.\n",
old_arch_spec.GetTriple().getTriple().c_str(),
target->GetArchitecture().GetTriple().getTriple().c_str());
}
// This supports the use-case scenario of immediately continuing the process
// once attached.
if (m_options.attach_info.GetContinueOnceAttached())
m_interpreter.HandleCommand("process continue", eLazyBoolNo, result);
return result.Succeeded();
}
CommandOptions m_options;
};
OptionDefinition CommandObjectProcessAttach::CommandOptions::g_option_table[] =
{
// clang-format off
{LLDB_OPT_SET_ALL, false, "continue", 'c', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone, "Immediately continue the process once attached."},
{LLDB_OPT_SET_ALL, false, "plugin", 'P', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypePlugin, "Name of the process plugin you want to use."},
{LLDB_OPT_SET_1, false, "pid", 'p', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypePid, "The process ID of an existing process to attach to."},
{LLDB_OPT_SET_2, false, "name", 'n', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeProcessName, "The name of the process to attach to."},
{LLDB_OPT_SET_2, false, "include-existing", 'i', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone, "Include existing processes when doing attach -w."},
{LLDB_OPT_SET_2, false, "waitfor", 'w', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone, "Wait for the process with <process-name> to launch."},
{0, false, nullptr, 0, 0, nullptr, nullptr, 0, eArgTypeNone, nullptr}
// clang-format on
};
//-------------------------------------------------------------------------
// CommandObjectProcessContinue
//-------------------------------------------------------------------------
#pragma mark CommandObjectProcessContinue
class CommandObjectProcessContinue : public CommandObjectParsed {
public:
CommandObjectProcessContinue(CommandInterpreter &interpreter)
: CommandObjectParsed(
interpreter, "process continue",
"Continue execution of all threads in the current process.",
"process continue",
eCommandRequiresProcess | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched | eCommandProcessMustBePaused),
m_options() {}
~CommandObjectProcessContinue() override = default;
protected:
class CommandOptions : public Options {
public:
CommandOptions() : Options() {
// Keep default values of all options in one place: OptionParsingStarting
// ()
OptionParsingStarting(nullptr);
}
~CommandOptions() override = default;
Error SetOptionValue(uint32_t option_idx, const char *option_arg,
ExecutionContext *execution_context) override {
Error error;
const int short_option = m_getopt_table[option_idx].val;
bool success = false;
switch (short_option) {
case 'i':
m_ignore = StringConvert::ToUInt32(option_arg, 0, 0, &success);
if (!success)
error.SetErrorStringWithFormat(
"invalid value for ignore option: \"%s\", should be a number.",
option_arg);
break;
default:
error.SetErrorStringWithFormat("invalid short option character '%c'",
short_option);
break;
}
return error;
}
void OptionParsingStarting(ExecutionContext *execution_context) override {
m_ignore = 0;
}
const OptionDefinition *GetDefinitions() override { return g_option_table; }
// Options table: Required for subclasses of Options.
static OptionDefinition g_option_table[];
uint32_t m_ignore;
};
bool DoExecute(Args &command, CommandReturnObject &result) override {
Process *process = m_exe_ctx.GetProcessPtr();
bool synchronous_execution = m_interpreter.GetSynchronous();
StateType state = process->GetState();
if (state == eStateStopped) {
if (command.GetArgumentCount() != 0) {
result.AppendErrorWithFormat(
"The '%s' command does not take any arguments.\n",
m_cmd_name.c_str());
result.SetStatus(eReturnStatusFailed);
return false;
}
if (m_options.m_ignore > 0) {
ThreadSP sel_thread_sp(GetDefaultThread()->shared_from_this());
if (sel_thread_sp) {
StopInfoSP stop_info_sp = sel_thread_sp->GetStopInfo();
if (stop_info_sp &&
stop_info_sp->GetStopReason() == eStopReasonBreakpoint) {
lldb::break_id_t bp_site_id =
(lldb::break_id_t)stop_info_sp->GetValue();
BreakpointSiteSP bp_site_sp(
process->GetBreakpointSiteList().FindByID(bp_site_id));
if (bp_site_sp) {
const size_t num_owners = bp_site_sp->GetNumberOfOwners();
for (size_t i = 0; i < num_owners; i++) {
Breakpoint &bp_ref =
bp_site_sp->GetOwnerAtIndex(i)->GetBreakpoint();
if (!bp_ref.IsInternal()) {
bp_ref.SetIgnoreCount(m_options.m_ignore);
}
}
}
}
}
}
{ // Scope for thread list mutex:
std::lock_guard<std::recursive_mutex> guard(
process->GetThreadList().GetMutex());
const uint32_t num_threads = process->GetThreadList().GetSize();
// Set the actions that the threads should each take when resuming
for (uint32_t idx = 0; idx < num_threads; ++idx) {
const bool override_suspend = false;
process->GetThreadList().GetThreadAtIndex(idx)->SetResumeState(
eStateRunning, override_suspend);
}
}
const uint32_t iohandler_id = process->GetIOHandlerID();
StreamString stream;
Error error;
if (synchronous_execution)
error = process->ResumeSynchronous(&stream);
else
error = process->Resume();
if (error.Success()) {
// There is a race condition where this thread will return up the call
// stack to the main command
// handler and show an (lldb) prompt before HandlePrivateEvent (from
// PrivateStateThread) has
// a chance to call PushProcessIOHandler().
process->SyncIOHandler(iohandler_id, 2000);
result.AppendMessageWithFormat("Process %" PRIu64 " resuming\n",
process->GetID());
if (synchronous_execution) {
// If any state changed events had anything to say, add that to the
// result
if (stream.GetData())
result.AppendMessage(stream.GetData());
result.SetDidChangeProcessState(true);
result.SetStatus(eReturnStatusSuccessFinishNoResult);
} else {
result.SetStatus(eReturnStatusSuccessContinuingNoResult);
}
} else {
result.AppendErrorWithFormat("Failed to resume process: %s.\n",
error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
} else {
result.AppendErrorWithFormat(
"Process cannot be continued from its current state (%s).\n",
StateAsCString(state));
result.SetStatus(eReturnStatusFailed);
}
return result.Succeeded();
}
Options *GetOptions() override { return &m_options; }
CommandOptions m_options;
};
OptionDefinition
CommandObjectProcessContinue::CommandOptions::g_option_table[] = {
// clang-format off
{LLDB_OPT_SET_ALL, false, "ignore-count",'i', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeUnsignedInteger, "Ignore <N> crossings of the breakpoint (if it exists) for the currently selected thread."},
{0, false, nullptr, 0, 0, nullptr, nullptr, 0, eArgTypeNone, nullptr}
// clang-format on
};
//-------------------------------------------------------------------------
// CommandObjectProcessDetach
//-------------------------------------------------------------------------
#pragma mark CommandObjectProcessDetach
class CommandObjectProcessDetach : public CommandObjectParsed {
public:
class CommandOptions : public Options {
public:
CommandOptions() : Options() { OptionParsingStarting(nullptr); }
~CommandOptions() override = default;
Error SetOptionValue(uint32_t option_idx, const char *option_arg,
ExecutionContext *execution_context) override {
Error error;
const int short_option = m_getopt_table[option_idx].val;
switch (short_option) {
case 's':
bool tmp_result;
bool success;
tmp_result = Args::StringToBoolean(option_arg, false, &success);
if (!success)
error.SetErrorStringWithFormat("invalid boolean option: \"%s\"",
option_arg);
else {
if (tmp_result)
m_keep_stopped = eLazyBoolYes;
else
m_keep_stopped = eLazyBoolNo;
}
break;
default:
error.SetErrorStringWithFormat("invalid short option character '%c'",
short_option);
break;
}
return error;
}
void OptionParsingStarting(ExecutionContext *execution_context) override {
m_keep_stopped = eLazyBoolCalculate;
}
const OptionDefinition *GetDefinitions() override { return g_option_table; }
// Options table: Required for subclasses of Options.
static OptionDefinition g_option_table[];
// Instance variables to hold the values for command options.
LazyBool m_keep_stopped;
};
CommandObjectProcessDetach(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process detach",
"Detach from the current target process.",
"process detach",
eCommandRequiresProcess | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched),
m_options() {}
~CommandObjectProcessDetach() override = default;
Options *GetOptions() override { return &m_options; }
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
Process *process = m_exe_ctx.GetProcessPtr();
// FIXME: This will be a Command Option:
bool keep_stopped;
if (m_options.m_keep_stopped == eLazyBoolCalculate) {
// Check the process default:
keep_stopped = process->GetDetachKeepsStopped();
} else if (m_options.m_keep_stopped == eLazyBoolYes)
keep_stopped = true;
else
keep_stopped = false;
Error error(process->Detach(keep_stopped));
if (error.Success()) {
result.SetStatus(eReturnStatusSuccessFinishResult);
} else {
result.AppendErrorWithFormat("Detach failed: %s\n", error.AsCString());
result.SetStatus(eReturnStatusFailed);
return false;
}
return result.Succeeded();
}
CommandOptions m_options;
};
OptionDefinition CommandObjectProcessDetach::CommandOptions::g_option_table[] =
{
// clang-format off
{LLDB_OPT_SET_1, false, "keep-stopped", 's', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeBoolean, "Whether or not the process should be kept stopped on detach (if possible)."},
{0, false, nullptr, 0, 0, nullptr, nullptr, 0, eArgTypeNone, nullptr}
// clang-format on
};
//-------------------------------------------------------------------------
// CommandObjectProcessConnect
//-------------------------------------------------------------------------
#pragma mark CommandObjectProcessConnect
class CommandObjectProcessConnect : public CommandObjectParsed {
public:
class CommandOptions : public Options {
public:
CommandOptions() : Options() {
// Keep default values of all options in one place: OptionParsingStarting
// ()
OptionParsingStarting(nullptr);
}
~CommandOptions() override = default;
Error SetOptionValue(uint32_t option_idx, const char *option_arg,
ExecutionContext *execution_context) override {
Error error;
const int short_option = m_getopt_table[option_idx].val;
switch (short_option) {
case 'p':
plugin_name.assign(option_arg);
break;
default:
error.SetErrorStringWithFormat("invalid short option character '%c'",
short_option);
break;
}
return error;
}
void OptionParsingStarting(ExecutionContext *execution_context) override {
plugin_name.clear();
}
const OptionDefinition *GetDefinitions() override { return g_option_table; }
// Options table: Required for subclasses of Options.
static OptionDefinition g_option_table[];
// Instance variables to hold the values for command options.
std::string plugin_name;
};
CommandObjectProcessConnect(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process connect",
"Connect to a remote debug service.",
"process connect <remote-url>", 0),
m_options() {}
~CommandObjectProcessConnect() override = default;
Options *GetOptions() override { return &m_options; }
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
if (command.GetArgumentCount() != 1) {
result.AppendErrorWithFormat(
"'%s' takes exactly one argument:\nUsage: %s\n", m_cmd_name.c_str(),
m_cmd_syntax.c_str());
result.SetStatus(eReturnStatusFailed);
return false;
}
Process *process = m_exe_ctx.GetProcessPtr();
if (process && process->IsAlive()) {
result.AppendErrorWithFormat(
"Process %" PRIu64
" is currently being debugged, kill the process before connecting.\n",
process->GetID());
result.SetStatus(eReturnStatusFailed);
return false;
}
const char *plugin_name = nullptr;
if (!m_options.plugin_name.empty())
plugin_name = m_options.plugin_name.c_str();
Error error;
Debugger &debugger = m_interpreter.GetDebugger();
PlatformSP platform_sp = m_interpreter.GetPlatform(true);
ProcessSP process_sp = platform_sp->ConnectProcess(
command.GetArgumentAtIndex(0), plugin_name, debugger,
debugger.GetSelectedTarget().get(), error);
if (error.Fail() || process_sp == nullptr) {
result.AppendError(error.AsCString("Error connecting to the process"));
result.SetStatus(eReturnStatusFailed);
return false;
}
return true;
}
CommandOptions m_options;
};
OptionDefinition CommandObjectProcessConnect::CommandOptions::g_option_table[] =
{
// clang-format off
{LLDB_OPT_SET_ALL, false, "plugin", 'p', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypePlugin, "Name of the process plugin you want to use."},
{0, false, nullptr, 0, 0, nullptr, nullptr, 0, eArgTypeNone, nullptr}
// clang-format on
};
//-------------------------------------------------------------------------
// CommandObjectProcessPlugin
//-------------------------------------------------------------------------
#pragma mark CommandObjectProcessPlugin
class CommandObjectProcessPlugin : public CommandObjectProxy {
public:
CommandObjectProcessPlugin(CommandInterpreter &interpreter)
: CommandObjectProxy(
interpreter, "process plugin",
"Send a custom command to the current target process plug-in.",
"process plugin <args>", 0) {}
~CommandObjectProcessPlugin() override = default;
CommandObject *GetProxyCommandObject() override {
Process *process = m_interpreter.GetExecutionContext().GetProcessPtr();
if (process)
return process->GetPluginCommandObject();
return nullptr;
}
};
//-------------------------------------------------------------------------
// CommandObjectProcessLoad
//-------------------------------------------------------------------------
#pragma mark CommandObjectProcessLoad
class CommandObjectProcessLoad : public CommandObjectParsed {
public:
class CommandOptions : public Options {
public:
CommandOptions() : Options() {
// Keep default values of all options in one place: OptionParsingStarting
// ()
OptionParsingStarting(nullptr);
}
~CommandOptions() override = default;
Error SetOptionValue(uint32_t option_idx, const char *option_arg,
ExecutionContext *execution_context) override {
Error error;
const int short_option = m_getopt_table[option_idx].val;
switch (short_option) {
case 'i':
do_install = true;
if (option_arg && option_arg[0])
install_path.SetFile(option_arg, false);
break;
default:
error.SetErrorStringWithFormat("invalid short option character '%c'",
short_option);
break;
}
return error;
}
void OptionParsingStarting(ExecutionContext *execution_context) override {
do_install = false;
install_path.Clear();
}
const OptionDefinition *GetDefinitions() override { return g_option_table; }
// Options table: Required for subclasses of Options.
static OptionDefinition g_option_table[];
// Instance variables to hold the values for command options.
bool do_install;
FileSpec install_path;
};
CommandObjectProcessLoad(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process load",
"Load a shared library into the current process.",
"process load <filename> [<filename> ...]",
eCommandRequiresProcess | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched |
eCommandProcessMustBePaused),
m_options() {}
~CommandObjectProcessLoad() override = default;
Options *GetOptions() override { return &m_options; }
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
Process *process = m_exe_ctx.GetProcessPtr();
const size_t argc = command.GetArgumentCount();
for (uint32_t i = 0; i < argc; ++i) {
Error error;
PlatformSP platform = process->GetTarget().GetPlatform();
const char *image_path = command.GetArgumentAtIndex(i);
uint32_t image_token = LLDB_INVALID_IMAGE_TOKEN;
if (!m_options.do_install) {
FileSpec image_spec(image_path, false);
platform->ResolveRemotePath(image_spec, image_spec);
image_token =
platform->LoadImage(process, FileSpec(), image_spec, error);
} else if (m_options.install_path) {
FileSpec image_spec(image_path, true);
platform->ResolveRemotePath(m_options.install_path,
m_options.install_path);
image_token = platform->LoadImage(process, image_spec,
m_options.install_path, error);
} else {
FileSpec image_spec(image_path, true);
image_token =
platform->LoadImage(process, image_spec, FileSpec(), error);
}
if (image_token != LLDB_INVALID_IMAGE_TOKEN) {
result.AppendMessageWithFormat(
"Loading \"%s\"...ok\nImage %u loaded.\n", image_path, image_token);
result.SetStatus(eReturnStatusSuccessFinishResult);
} else {
result.AppendErrorWithFormat("failed to load '%s': %s", image_path,
error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
}
return result.Succeeded();
}
CommandOptions m_options;
};
OptionDefinition CommandObjectProcessLoad::CommandOptions::g_option_table[] = {
// clang-format off
{LLDB_OPT_SET_ALL, false, "install", 'i', OptionParser::eOptionalArgument, nullptr, nullptr, 0, eArgTypePath, "Install the shared library to the target. If specified without an argument then the library will installed in the current working directory."},
{0, false, nullptr, 0, 0, nullptr, nullptr, 0, eArgTypeNone, nullptr}
// clang-format on
};
//-------------------------------------------------------------------------
// CommandObjectProcessUnload
//-------------------------------------------------------------------------
#pragma mark CommandObjectProcessUnload
class CommandObjectProcessUnload : public CommandObjectParsed {
public:
CommandObjectProcessUnload(CommandInterpreter &interpreter)
: CommandObjectParsed(
interpreter, "process unload",
"Unload a shared library from the current process using the index "
"returned by a previous call to \"process load\".",
"process unload <index>",
eCommandRequiresProcess | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched | eCommandProcessMustBePaused) {}
~CommandObjectProcessUnload() override = default;
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
Process *process = m_exe_ctx.GetProcessPtr();
const size_t argc = command.GetArgumentCount();
for (uint32_t i = 0; i < argc; ++i) {
const char *image_token_cstr = command.GetArgumentAtIndex(i);
uint32_t image_token = StringConvert::ToUInt32(
image_token_cstr, LLDB_INVALID_IMAGE_TOKEN, 0);
if (image_token == LLDB_INVALID_IMAGE_TOKEN) {
result.AppendErrorWithFormat("invalid image index argument '%s'",
image_token_cstr);
result.SetStatus(eReturnStatusFailed);
break;
} else {
Error error(process->GetTarget().GetPlatform()->UnloadImage(
process, image_token));
if (error.Success()) {
result.AppendMessageWithFormat(
"Unloading shared library with index %u...ok\n", image_token);
result.SetStatus(eReturnStatusSuccessFinishResult);
} else {
result.AppendErrorWithFormat("failed to unload image: %s",
error.AsCString());
result.SetStatus(eReturnStatusFailed);
break;
}
}
}
return result.Succeeded();
}
};
//-------------------------------------------------------------------------
// CommandObjectProcessSignal
//-------------------------------------------------------------------------
#pragma mark CommandObjectProcessSignal
class CommandObjectProcessSignal : public CommandObjectParsed {
public:
CommandObjectProcessSignal(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process signal",
"Send a UNIX signal to the current target process.",
nullptr, eCommandRequiresProcess |
eCommandTryTargetAPILock) {
CommandArgumentEntry arg;
CommandArgumentData signal_arg;
// Define the first (and only) variant of this arg.
signal_arg.arg_type = eArgTypeUnixSignal;
signal_arg.arg_repetition = eArgRepeatPlain;
// There is only one variant this argument could be; put it into the
// argument entry.
arg.push_back(signal_arg);
// Push the data for the first argument into the m_arguments vector.
m_arguments.push_back(arg);
}
~CommandObjectProcessSignal() override = default;
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
Process *process = m_exe_ctx.GetProcessPtr();
if (command.GetArgumentCount() == 1) {
int signo = LLDB_INVALID_SIGNAL_NUMBER;
const char *signal_name = command.GetArgumentAtIndex(0);
if (::isxdigit(signal_name[0]))
signo =
StringConvert::ToSInt32(signal_name, LLDB_INVALID_SIGNAL_NUMBER, 0);
else
signo = process->GetUnixSignals()->GetSignalNumberFromName(signal_name);
if (signo == LLDB_INVALID_SIGNAL_NUMBER) {
result.AppendErrorWithFormat("Invalid signal argument '%s'.\n",
command.GetArgumentAtIndex(0));
result.SetStatus(eReturnStatusFailed);
} else {
Error error(process->Signal(signo));
if (error.Success()) {
result.SetStatus(eReturnStatusSuccessFinishResult);
} else {
result.AppendErrorWithFormat("Failed to send signal %i: %s\n", signo,
error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
}
} else {
result.AppendErrorWithFormat(
"'%s' takes exactly one signal number argument:\nUsage: %s\n",
m_cmd_name.c_str(), m_cmd_syntax.c_str());
result.SetStatus(eReturnStatusFailed);
}
return result.Succeeded();
}
};
//-------------------------------------------------------------------------
// CommandObjectProcessInterrupt
//-------------------------------------------------------------------------
#pragma mark CommandObjectProcessInterrupt
class CommandObjectProcessInterrupt : public CommandObjectParsed {
public:
CommandObjectProcessInterrupt(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process interrupt",
"Interrupt the current target process.",
"process interrupt",
eCommandRequiresProcess | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched) {}
~CommandObjectProcessInterrupt() override = default;
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
Process *process = m_exe_ctx.GetProcessPtr();
if (process == nullptr) {
result.AppendError("no process to halt");
result.SetStatus(eReturnStatusFailed);
return false;
}
if (command.GetArgumentCount() == 0) {
bool clear_thread_plans = true;
Error error(process->Halt(clear_thread_plans));
if (error.Success()) {
result.SetStatus(eReturnStatusSuccessFinishResult);
} else {
result.AppendErrorWithFormat("Failed to halt process: %s\n",
error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
} else {
result.AppendErrorWithFormat("'%s' takes no arguments:\nUsage: %s\n",
m_cmd_name.c_str(), m_cmd_syntax.c_str());
result.SetStatus(eReturnStatusFailed);
}
return result.Succeeded();
}
};
//-------------------------------------------------------------------------
// CommandObjectProcessKill
//-------------------------------------------------------------------------
#pragma mark CommandObjectProcessKill
class CommandObjectProcessKill : public CommandObjectParsed {
public:
CommandObjectProcessKill(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process kill",
"Terminate the current target process.",
"process kill",
eCommandRequiresProcess | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched) {}
~CommandObjectProcessKill() override = default;
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
Process *process = m_exe_ctx.GetProcessPtr();
if (process == nullptr) {
result.AppendError("no process to kill");
result.SetStatus(eReturnStatusFailed);
return false;
}
if (command.GetArgumentCount() == 0) {
Error error(process->Destroy(true));
if (error.Success()) {
result.SetStatus(eReturnStatusSuccessFinishResult);
} else {
result.AppendErrorWithFormat("Failed to kill process: %s\n",
error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
} else {
result.AppendErrorWithFormat("'%s' takes no arguments:\nUsage: %s\n",
m_cmd_name.c_str(), m_cmd_syntax.c_str());
result.SetStatus(eReturnStatusFailed);
}
return result.Succeeded();
}
};
//-------------------------------------------------------------------------
// CommandObjectProcessSaveCore
//-------------------------------------------------------------------------
#pragma mark CommandObjectProcessSaveCore
class CommandObjectProcessSaveCore : public CommandObjectParsed {
public:
CommandObjectProcessSaveCore(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process save-core",
"Save the current process as a core file using an "
"appropriate file type.",
"process save-core FILE",
eCommandRequiresProcess | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched) {}
~CommandObjectProcessSaveCore() override = default;
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
ProcessSP process_sp = m_exe_ctx.GetProcessSP();
if (process_sp) {
if (command.GetArgumentCount() == 1) {
FileSpec output_file(command.GetArgumentAtIndex(0), false);
Error error = PluginManager::SaveCore(process_sp, output_file);
if (error.Success()) {
result.SetStatus(eReturnStatusSuccessFinishResult);
} else {
result.AppendErrorWithFormat(
"Failed to save core file for process: %s\n", error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
} else {
result.AppendErrorWithFormat("'%s' takes one arguments:\nUsage: %s\n",
m_cmd_name.c_str(), m_cmd_syntax.c_str());
result.SetStatus(eReturnStatusFailed);
}
} else {
result.AppendError("invalid process");
result.SetStatus(eReturnStatusFailed);
return false;
}
return result.Succeeded();
}
};
//-------------------------------------------------------------------------
// CommandObjectProcessStatus
//-------------------------------------------------------------------------
#pragma mark CommandObjectProcessStatus
class CommandObjectProcessStatus : public CommandObjectParsed {
public:
CommandObjectProcessStatus(CommandInterpreter &interpreter)
: CommandObjectParsed(
interpreter, "process status",
"Show status and stop location for the current target process.",
"process status",
eCommandRequiresProcess | eCommandTryTargetAPILock) {}
~CommandObjectProcessStatus() override = default;
bool DoExecute(Args &command, CommandReturnObject &result) override {
Stream &strm = result.GetOutputStream();
result.SetStatus(eReturnStatusSuccessFinishNoResult);
// No need to check "process" for validity as eCommandRequiresProcess
// ensures it is valid
Process *process = m_exe_ctx.GetProcessPtr();
const bool only_threads_with_stop_reason = true;
const uint32_t start_frame = 0;
const uint32_t num_frames = 1;
const uint32_t num_frames_with_source = 1;
process->GetStatus(strm);
process->GetThreadStatus(strm, only_threads_with_stop_reason, start_frame,
num_frames, num_frames_with_source);
return result.Succeeded();
}
};
//-------------------------------------------------------------------------
// CommandObjectProcessHandle
//-------------------------------------------------------------------------
#pragma mark CommandObjectProcessHandle
class CommandObjectProcessHandle : public CommandObjectParsed {
public:
class CommandOptions : public Options {
public:
CommandOptions() : Options() { OptionParsingStarting(nullptr); }
~CommandOptions() override = default;
Error SetOptionValue(uint32_t option_idx, const char *option_arg,
ExecutionContext *execution_context) override {
Error error;
const int short_option = m_getopt_table[option_idx].val;
switch (short_option) {
case 's':
stop = option_arg;
break;
case 'n':
notify = option_arg;
break;
case 'p':
pass = option_arg;
break;
default:
error.SetErrorStringWithFormat("invalid short option character '%c'",
short_option);
break;
}
return error;
}
void OptionParsingStarting(ExecutionContext *execution_context) override {
stop.clear();
notify.clear();
pass.clear();
}
const OptionDefinition *GetDefinitions() override { return g_option_table; }
// Options table: Required for subclasses of Options.
static OptionDefinition g_option_table[];
// Instance variables to hold the values for command options.
std::string stop;
std::string notify;
std::string pass;
};
CommandObjectProcessHandle(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process handle",
"Manage LLDB handling of OS signals for the "
"current target process. Defaults to showing "
"current policy.",
nullptr),
m_options() {
SetHelpLong("\nIf no signals are specified, update them all. If no update "
"option is specified, list the current values.");
CommandArgumentEntry arg;
CommandArgumentData signal_arg;
signal_arg.arg_type = eArgTypeUnixSignal;
signal_arg.arg_repetition = eArgRepeatStar;
arg.push_back(signal_arg);
m_arguments.push_back(arg);
}
~CommandObjectProcessHandle() override = default;
Options *GetOptions() override { return &m_options; }
bool VerifyCommandOptionValue(const std::string &option, int &real_value) {
bool okay = true;
bool success = false;
bool tmp_value = Args::StringToBoolean(option.c_str(), false, &success);
if (success && tmp_value)
real_value = 1;
else if (success && !tmp_value)
real_value = 0;
else {
// If the value isn't 'true' or 'false', it had better be 0 or 1.
real_value = StringConvert::ToUInt32(option.c_str(), 3);
if (real_value != 0 && real_value != 1)
okay = false;
}
return okay;
}
void PrintSignalHeader(Stream &str) {
str.Printf("NAME PASS STOP NOTIFY\n");
str.Printf("=========== ===== ===== ======\n");
}
void PrintSignal(Stream &str, int32_t signo, const char *sig_name,
const UnixSignalsSP &signals_sp) {
bool stop;
bool suppress;
bool notify;
str.Printf("%-11s ", sig_name);
if (signals_sp->GetSignalInfo(signo, suppress, stop, notify)) {
bool pass = !suppress;
str.Printf("%s %s %s", (pass ? "true " : "false"),
(stop ? "true " : "false"), (notify ? "true " : "false"));
}
str.Printf("\n");
}
void PrintSignalInformation(Stream &str, Args &signal_args,
int num_valid_signals,
const UnixSignalsSP &signals_sp) {
PrintSignalHeader(str);
if (num_valid_signals > 0) {
size_t num_args = signal_args.GetArgumentCount();
for (size_t i = 0; i < num_args; ++i) {
int32_t signo = signals_sp->GetSignalNumberFromName(
signal_args.GetArgumentAtIndex(i));
if (signo != LLDB_INVALID_SIGNAL_NUMBER)
PrintSignal(str, signo, signal_args.GetArgumentAtIndex(i),
signals_sp);
}
} else // Print info for ALL signals
{
int32_t signo = signals_sp->GetFirstSignalNumber();
while (signo != LLDB_INVALID_SIGNAL_NUMBER) {
PrintSignal(str, signo, signals_sp->GetSignalAsCString(signo),
signals_sp);
signo = signals_sp->GetNextSignalNumber(signo);
}
}
}
protected:
bool DoExecute(Args &signal_args, CommandReturnObject &result) override {
TargetSP target_sp = m_interpreter.GetDebugger().GetSelectedTarget();
if (!target_sp) {
result.AppendError("No current target;"
" cannot handle signals until you have a valid target "
"and process.\n");
result.SetStatus(eReturnStatusFailed);
return false;
}
ProcessSP process_sp = target_sp->GetProcessSP();
if (!process_sp) {
result.AppendError("No current process; cannot handle signals until you "
"have a valid process.\n");
result.SetStatus(eReturnStatusFailed);
return false;
}
int stop_action = -1; // -1 means leave the current setting alone
int pass_action = -1; // -1 means leave the current setting alone
int notify_action = -1; // -1 means leave the current setting alone
if (!m_options.stop.empty() &&
!VerifyCommandOptionValue(m_options.stop, stop_action)) {
result.AppendError("Invalid argument for command option --stop; must be "
"true or false.\n");
result.SetStatus(eReturnStatusFailed);
return false;
}
if (!m_options.notify.empty() &&
!VerifyCommandOptionValue(m_options.notify, notify_action)) {
result.AppendError("Invalid argument for command option --notify; must "
"be true or false.\n");
result.SetStatus(eReturnStatusFailed);
return false;
}
if (!m_options.pass.empty() &&
!VerifyCommandOptionValue(m_options.pass, pass_action)) {
result.AppendError("Invalid argument for command option --pass; must be "
"true or false.\n");
result.SetStatus(eReturnStatusFailed);
return false;
}
size_t num_args = signal_args.GetArgumentCount();
UnixSignalsSP signals_sp = process_sp->GetUnixSignals();
int num_signals_set = 0;
if (num_args > 0) {
for (size_t i = 0; i < num_args; ++i) {
int32_t signo = signals_sp->GetSignalNumberFromName(
signal_args.GetArgumentAtIndex(i));
if (signo != LLDB_INVALID_SIGNAL_NUMBER) {
// Casting the actions as bools here should be okay, because
// VerifyCommandOptionValue guarantees
// the value is either 0 or 1.
if (stop_action != -1)
signals_sp->SetShouldStop(signo, stop_action);
if (pass_action != -1) {
bool suppress = !pass_action;
signals_sp->SetShouldSuppress(signo, suppress);
}
if (notify_action != -1)
signals_sp->SetShouldNotify(signo, notify_action);
++num_signals_set;
} else {
result.AppendErrorWithFormat("Invalid signal name '%s'\n",
signal_args.GetArgumentAtIndex(i));
}
}
} else {
// No signal specified, if any command options were specified, update ALL
// signals.
if ((notify_action != -1) || (stop_action != -1) || (pass_action != -1)) {
if (m_interpreter.Confirm(
"Do you really want to update all the signals?", false)) {
int32_t signo = signals_sp->GetFirstSignalNumber();
while (signo != LLDB_INVALID_SIGNAL_NUMBER) {
if (notify_action != -1)
signals_sp->SetShouldNotify(signo, notify_action);
if (stop_action != -1)
signals_sp->SetShouldStop(signo, stop_action);
if (pass_action != -1) {
bool suppress = !pass_action;
signals_sp->SetShouldSuppress(signo, suppress);
}
signo = signals_sp->GetNextSignalNumber(signo);
}
}
}
}
PrintSignalInformation(result.GetOutputStream(), signal_args,
num_signals_set, signals_sp);
if (num_signals_set > 0)
result.SetStatus(eReturnStatusSuccessFinishNoResult);
else
result.SetStatus(eReturnStatusFailed);
return result.Succeeded();
}
CommandOptions m_options;
};
OptionDefinition CommandObjectProcessHandle::CommandOptions::g_option_table[] =
{
// clang-format off
{LLDB_OPT_SET_1, false, "stop", 's', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeBoolean, "Whether or not the process should be stopped if the signal is received."},
{LLDB_OPT_SET_1, false, "notify", 'n', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeBoolean, "Whether or not the debugger should notify the user if the signal is received."},
{LLDB_OPT_SET_1, false, "pass", 'p', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeBoolean, "Whether or not the signal should be passed to the process."},
{0, false, nullptr, 0, 0, nullptr, nullptr, 0, eArgTypeNone, nullptr}
// clang-format on
};
//-------------------------------------------------------------------------
// CommandObjectMultiwordProcess
//-------------------------------------------------------------------------
CommandObjectMultiwordProcess::CommandObjectMultiwordProcess(
CommandInterpreter &interpreter)
: CommandObjectMultiword(
interpreter, "process",
"Commands for interacting with processes on the current platform.",
"process <subcommand> [<subcommand-options>]") {
LoadSubCommand("attach",
CommandObjectSP(new CommandObjectProcessAttach(interpreter)));
LoadSubCommand("launch",
CommandObjectSP(new CommandObjectProcessLaunch(interpreter)));
LoadSubCommand("continue", CommandObjectSP(new CommandObjectProcessContinue(
interpreter)));
LoadSubCommand("connect",
CommandObjectSP(new CommandObjectProcessConnect(interpreter)));
LoadSubCommand("detach",
CommandObjectSP(new CommandObjectProcessDetach(interpreter)));
LoadSubCommand("load",
CommandObjectSP(new CommandObjectProcessLoad(interpreter)));
LoadSubCommand("unload",
CommandObjectSP(new CommandObjectProcessUnload(interpreter)));
LoadSubCommand("signal",
CommandObjectSP(new CommandObjectProcessSignal(interpreter)));
LoadSubCommand("handle",
CommandObjectSP(new CommandObjectProcessHandle(interpreter)));
LoadSubCommand("status",
CommandObjectSP(new CommandObjectProcessStatus(interpreter)));
LoadSubCommand("interrupt", CommandObjectSP(new CommandObjectProcessInterrupt(
interpreter)));
LoadSubCommand("kill",
CommandObjectSP(new CommandObjectProcessKill(interpreter)));
LoadSubCommand("plugin",
CommandObjectSP(new CommandObjectProcessPlugin(interpreter)));
LoadSubCommand("save-core", CommandObjectSP(new CommandObjectProcessSaveCore(
interpreter)));
}
CommandObjectMultiwordProcess::~CommandObjectMultiwordProcess() = default;
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